paeds 2 ? Flashcards

(514 cards)

1
Q

triad of depression

A

Low mood
Anhedonia, a lack of pleasure in activities
Low energy

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2
Q

depression symptoms in youths

A
Low mood
Anhedonia, a lack of pleasure in activities
Low energy
Anxiety and worry
Clinginess
Irritability
Avoiding social situations (e.g. school)
Hopelessness about the future
Poor sleep, particularly early morning waking
Poor appetite or over eating
Poor concentration
Physical symptoms such as abdominal pain
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3
Q

conservative management of depression

A

watchful waiting and advice about healthy habits, such as healthy diet, exercise and avoiding alcohol and cannabis.

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4
Q

moderate to severe depression treatment first line

A

Psychological therapy as the first line treatment with cognitive behavioural therapy, non-directive supportive therapy, interpersonal therapy and family therapy

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5
Q

first line antidepressant for depression in youths

A

Fluoxetine is the first line antidepressant in children, starting at 10mg and increasing to a maximum of 20mg

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6
Q

second line antidepressants for youth depression

A

Sertraline and citalopram

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7
Q

medical treatment timeline for depression

A

continue 6 months after remission is achieved

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8
Q

severity of anxiety can be assessed through

A

GAD-7 anxiety questionnaire, as well as co-morbidity and environmental triggers

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9
Q

mild anxiety treatment

A

watchful waiting and advice about self-help strategies (e.g. meditation), diet, exercise and avoiding alcohol, caffeine and drugs.

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10
Q

moderate to severe anxiety treatment

A

Counselling
Cognitive behavioural therapy
Medical management. Usually an SSRI such as sertraline is considered.

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11
Q

obsessions are

A

unwanted and uncontrolled thoughts and intrusive images

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12
Q

compulsions are

A

repetitive actions the person feels they must do, generating anxiety if they are not done.

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13
Q

features of autistic social interaction

A
Lack of eye contact
Delay in smiling
Avoids physical contact
Unable to read non-verbal cues
Difficulty establishing friendships
Not displaying a desire to share attention
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14
Q

features of communication in autistics

A

Delay, absence or regression in language development
Lack of appropriate non-verbal communication such as smiling, eye contact, responding to others and sharing interest
Difficulty with imaginative or imitative behaviour
Repetitive use of words or phrases

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15
Q

behavioural features in autistic

A

Greater interest in objects, numbers or patterns than people
Stereotypical repetitive movements. There may be self-stimulating movements that are used to comfort themselves, such as hand-flapping or rocking.
Intensive and deep interests that are persistent and rigid
Repetitive behaviour and fixed routines
Anxiety and distress with experiences outside their normal routine
Extremely restricted food preferences

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16
Q

what key part of ADHD helps differentiate it from an enviromental problem?

A

consistent across all various settings

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17
Q

features of ADHD

A

Very short attention span
Quickly moving from one activity to another
Quickly losing interest in a task and not being able to persist with challenging tasks
Constantly moving or fidgeting
Impulsive behaviour
Disruptive or rule breaking

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18
Q

what is the type of medication used for treatment of ADHD

A

central nervous system stimulants.

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19
Q

examples of medication used in ADHD

A

Methylphenidate (“Ritalin“)
Dexamfetamine
Atomoxetine

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20
Q

pathology of anorexia

A

the person feel they are overweight despite evidence of normal or low body weight. It involves obsessively restricting calorie intake with the intention of losing weight.

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21
Q

features of anorexia nervosa

A
Excessive weight loss
Amenorrhoea
Lanugo hair is fine, soft hair across most of the body
Hypokalaemia
Hypotension
Hypothermia
Changes in mood, anxiety and depression
Solitude
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22
Q

cardiac complications of anorexia include

A

arrhythmia, cardiac atrophy and sudden cardiac death.

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23
Q

the teenage girl with a normal body weight that presents with swelling to the face or under the jaw (salivary glands), calluses on the knuckles and alkalosis on a blood gas. The presenting complaint may be abdominal pain or reflux.. what is the underlying problem?

A

bulimia nervosa

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24
Q

features of bulimia nervosa?

A

alkalosis, due to vomiting hydrochloric acid from the stomach
Hypokalaemia
Erosion of teeth
Swollen salivary glands
Mouth ulcers
Gastro-oesophageal reflux and irritation
Calluses on the knuckles where they have been scraped across the teeth. This is called Russell’s sign.

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25
binge eating disorder may involve
``` A planned binge involving “binge foods” Eating very quickly Unrelated to whether they are hungry or not Becoming uncomfortably full Eating in a “dazed state” ```
26
high risk for refeeding syndrome are those
if they have a BMI below 20 and have had little to eat for the past 5 days.
27
pathology behind refeeding syndrome
Metabolism in the cells and organs dramatically slows during prolonged periods of malnutrition. As the starved cells start to process glucose, protein and fats again they use up magnesium, potassium and phosphorus.
28
refeeding syndrome protocol
Slowly reintroducing food with restricted calories Magnesium, potassium, phosphate and glucose monitoring along with other routine bloods Fluid balance monitoring ECG monitoring may be required in severe cases Supplementation with electrolytes and vitamins, particularly B vitamins and thiamine
29
anxiety personality disorders
avoidant, dependent and obsessive.
30
Avoidant personality disorder features
severe anxiety about rejection or disapproval and avoidance of social situations or relationships.
31
Dependent personality disorder features
heavy reliance on others to make decisions and take responsibility for their lives, taking a very passive approach.
32
Obsessive compulsive personality disorder features
features unrealistic expectations of how things should be done by themselves and others, and catastrophising about what will happen if these expectations are not met.
33
Paranoid personality disorder features
features difficulty in trusting or revealing personal information to others.
34
Schizoid personality disorder features
features a lack of interest or desire to form relationships with others and feelings that this is of no benefit to them.
35
emotional impulsive personality disorder examples
borderline personality disorder, histrionic, narcissistic
36
Borderline personality disorder features
fluctuating strong emotions and difficulties with identity and maintaining healthy relationships.
37
Histrionic personality disorder features
features the need to be at the centre of attention and having to perform for others to maintain that attention.
38
Narcissistic personality disorder features
features feelings that they are special and need others to recognise this or else they get upset. They put themselves first.
39
examples of suspicious personality disorders
paranoid, schizoid and schizotypal.
40
key management of choice for a personality disorder
Cognitive behavioural therapy (CBT) and psychotherapy
41
Copropraxia refers too
involves making obscene gestures
42
Coprolalia refers too
involves saying obscene words
43
Echolalia refers too
involves repeating other people’s words
44
troublesome tics may be treated with
Habit reversal training Exposure with response prevention Medications may be tried in very severe cases, usually with antipsychotic medications
45
Fetal haemoglobin subunits are
two alpha and two gamma subunits.
46
adult haemoglobin subunits are
two alpha and two beta subunits.
47
foetal or adult haemoglobin has greater affinity?
foetal.
48
at birth the haemoglobin ratio is
At birth, around half the haemoglobin produced is HbF and half is HbA
49
what drug can be used to increase production of foetal haemoglobin in patients with sickle cell anaemia?
Hydroxycarbamide
50
foetal haemoglobin doesnt sickle because
is no beta subunit in the structure.
51
normal haemoglobin at birth?
150 – 235 grams/litre
52
normal haemoglobin at 2 months - 6 years
110 – 140 grams/litre
53
female haemoglobin 12-18
120 – 160 grams/litre
54
normal haemoglobin 12-18 male
130 -160 grams/litre
55
common cause on anaemia in infancy is
Physiologic anaemia of infancy
56
other causes of anaemia in infants is
Anaemia of prematurity Blood loss Haemolysis Twin-twin transfusion
57
haemolytic causes of anaemia
Haemolytic disease of the newborn (ABO or rhesus incompatibility) Hereditary spherocytosis G6PD deficiency
58
normal dip in haemoglobin in infants occurs around
six to nine weeks
59
phsyiological anaemia of infancy is due to
High oxygen delivery to the tissues caused by the high haemoglobin levels at birth cause negative feedback. Production of erythropoietin by the kidneys is suppressed and subsequently there is reduced production of haemoglobin by the bone marrow.
60
common causes of Anaemia in older children is
Iron deficiency anaemia secondary to dietary insufficiency. This is the most common cause overall. Blood loss, most frequently from menstruation in older girls
61
common cause of global chronic anaemia is
Worldwide, a common cause of blood loss causing chronic anaemia and iron deficiency is helminth infection, with roundworms, hookworms or whipworms.
62
causes of microcytic anaemia
``` T – Thalassaemia A – Anaemia of chronic disease I – Iron deficiency anaemia L – Lead poisoning S – Sideroblastic anaemia ```
63
causes of normocytic anaemia
``` A – Acute blood loss A – Anaemia of Chronic Disease A – Aplastic Anaemia H – Haemolytic Anaemia H – Hypothyroidism ```
64
causes of macrocytic megaloblastic anaemia
B12 deficiency | Folate deficiency
65
causes of normoblastic macrocytic anamia
``` Alcohol Reticulocytosis (usually from haemolytic anaemia or blood loss) Hypothyroidism Liver disease Drugs such as azathioprine ```
66
symptoms of anaemia
``` Tiredness Shortness of breath Headaches Dizziness Palpitations Worsening of other conditions ```
67
specific symptoms of iron deficiency anaemia
pica and hair loss
68
general signs of anaemia
Pale skin Conjunctival pallor Tachycardia Raised respiratory rate
69
specific signs of anaemia
koilonychia, angular chelitis, atrophic glossitis, brittle hair and nails, jaundice or bone deformities (thalassaemia)
70
initial investigations for anaemia
``` Full blood count for haemoglobin and MCV Blood film Reticulocyte count Ferritin (low iron deficiency) B12 and folate Bilirubin (raised in haemolysis) Direct Coombs test (autoimmune haemolytic anaemia) Haemoglobin electrophoresis (haemoglobinopathies) ```
71
iron is absorbed in the
duodenum and jejunum.
72
what form is iron absorbed in
ferrous (Fe2+) due to stomach acid.
73
ferric ions bind to what carrier?
transferrin
74
total iron binding capacity related to the amount of?
transferrin
75
transferring saturation =
Serum Iron / Total Iron Binding Capacity
76
extra ferritin may be released when there is
inflammation.
77
normal total iron binding capacity
54 – 75 μmol/L
78
what may give the impression of iron overload?
acute liver damage
79
what type of leukemia is most common?
Acute lymphoblastic leukaemia (ALL)
80
Acute lymphoblastic leukaemia commonly peaks at age
2-3
81
Acute myeloid leukaemia (AML) peaks age
under 2 years
82
what syndromes increases risk of leukaemia
Down’s syndrome Kleinfelter syndrome Noonan syndrome Fanconi’s anaemia
83
presentation of leukaemia
``` Persistent fatigue Unexplained fever Failure to thrive Weight loss Night sweats Pallor (anaemia) Petechiae and abnormal bruising (thrombocytopenia) Unexplained bleeding (thrombocytopenia) Abdominal pain Generalised lymphadenopathy Unexplained or persistent bone or joint pain Hepatosplenomegaly ```
84
refer any child to haemotology for oncological assessmen if presenting with
unexplained petechiae or hepatomegaly
85
if leukaemia is suspected what test should be urgently performed?
FBc <48 hours
86
investigations for diagnosis of leukaemia should be
Full blood count, which can show anaemia, leukopenia, thrombocytopenia and high numbers of the abnormal WBCs Blood film, which can show blast cells Bone marrow biopsy Lymph node biopsy
87
staging investigations for leukaemia include
Chest xray CT scan Lumbar puncture Genetic analysis and immunophenotyping of the abnormal cells
88
therapies for leukaemia are
chemotherapy. Other therapies: Radiotherapy Bone marrow transplant Surgery
89
key differential haematoligcal for non blanching rash
leukaemia or idiopathic thrombocytopenic purpura
90
ITP is an example of what type of hypersensitivity?
type II hypersensitivity reaction. It is caused by the production of antibodies that target and destroy platelets.
91
presentation of ITP is
Often there is a history of a recent viral illness. The onset of symptoms occurs over 24 – 48 hours: Bleeding, for example from the gums, epistaxis or menorrhagia Bruising Petechial or purpuric rash, caused by bleeding under the skin
92
petechiae size
~1mm
93
purpura size
3-10mm
94
ecchymoses size
>10mm
95
ix for ITP
urgent full blood count for the platelet count.
96
for severe bleeds with ITP treatment should be
may be required if the patient is actively bleeding or severe thrombocytopenia (platelets below 10): Prednisolone IV immunoglobulins Blood transfusions if required Platelet transfusions only work temporarily
97
sickle cell anaemia genetic transmission is via
autosomal recessive
98
what chromosome is effected with sickle cell anaemia
chromosome 11
99
complications of sickle cell anaemia
``` Anaemia Increased risk of infection Stroke Avascular necrosis in large joints such as the hip Pulmonary hypertension Painful and persistent penile erection (priapism) Chronic kidney disease Sickle cell crises Acute chest syndrome ```
100
general management of sickle cells anaemia?
Avoid dehydration and other triggers of crises Ensure vaccines are up to date Antibiotic prophylaxis to protect against infection, usually with penicillin V (phenoxymethypenicillin) hydroxycarbamide
101
curative option for sickle cell anaemia?
bone marrow transplant
102
supportive management for a sickle cell crisis
Have a low threshold for admission to hospital Treat any infection Keep warm Keep well hydrated (IV fluids may be required) Simple analgesia such as paracetamol and ibuprofen
103
vaso-occlusive crisis may cause what in men?
priapism in men by trapping blood in the penis, causing a painful and persistent erection.
104
splenic sequestration crisis refers too
red blood cells blocking blood flow within the spleen. This causes an acutely enlarged and painful spleen.
105
complication of splenic sequestration crisis is
circulatory collapse.
106
sickle cell aplastic crisis may be causes by
parvovirus B19
107
aplastic crisis refers too
temporary loss of the creation of new blood cells.
108
diagnosis of sickle cell acute chest syndrome requires.
Fever or respiratory symptoms, with: | New infiltrates seen on a chest xray
109
Tx for sickle cell acute chest syndrome is
Antibiotics or antivirals for infections Blood transfusions for anaemia Incentive spirometry using a machine that encourages effective and deep breathing Artificial ventilation with NIV or intubation may be required
110
both thalassaemia's genetic inheritance are
autosomal recessive
111
signs and symptoms of thalassaemia
``` Microcytic anaemia (low mean corpuscular volume) Fatigue Pallor Jaundice Gallstones Splenomegaly Poor growth and development Pronounced forehead and malar eminences ```
112
diagnosis of thalassaemia is through
Full blood count shows a microcytic anaemia. Haemoglobin electrophoresis is used to diagnose globin abnormalities. DNA testing
113
risk of treatment with thalassaemia?
iron overload requiring iron chelation therapy
114
alpha thalassaemia is caused by defects on chromosome
16
115
beta Thalassaemia Minor means
they have microcytic anaemia with one normal beta and one abnormal beta gene
116
beta Thalassaemia Intermedia means
This can be either two defective genes or one defective gene and one deletion gene.
117
beta thalassaemia major means
homozygous for the deletion genes.
118
hereditary spherocytosis genetic transmission
autosomal dominant
119
presentation of hereditary spherocytosis
Jaundice Anaemia Gallstones Splenomegaly
120
crises that may arise from hereditary spherocytosis
haemolytic, or aplastic
121
diagnosis of hereditary spherocytosis is through
family history and clinical features, along with spherocytes on the blood film. The mean corpuscular haemoglobin concentration (MCHC) is raised on a full blood count. Reticulocytes will be raised
122
management of hereditary spherocytosis is
Treatment is with folate supplementation and splenectomy. Removal of the gallbladder (cholecystectomy) may be required if gallstones are a problem. Transfusions may be required during acute crises.
123
a patient that becomes jaundice and anaemic after eating broad beans, developing an infection or being treated with antimalarial medications. The underlying diagnosis might be
G6PD deficiency
124
G6PD genetic transmission is
x-linked recessive
125
role of G6PD enzyme is
protect cells from damage by reactive oxygen species that may cause haemolysis during period of acute stress.
126
G6PD presentation
neonatal jaundice. Other features of the condition are: Anaemia Intermittent jaundice, particularly in response to triggers Gallstones Splenomegaly
127
G6PD on blood film may show
Heinz bodies may be seen on a on blood film. Heinz bodies are blobs of denatured haemoglobin (“inclusions”) seen within the red blood cells.
128
diagnosis of G6PD may be through
enzyme assay
129
the skin sensitisation theory dictates allergy arises from
1. exposure through breaks in the skin | 2. lack of GI exposure to the allergen.
130
type 1 hypersensitivity involves
IgE antibodies to a specific allergen trigger mast cells and basophils to release histamines and other cytokines. This causes an immediate reaction.
131
type 1 hypersensitivity reaction involves
range from itching, facial swelling and urticaria to anaphylaxis.
132
type 2 hypersensitivity reaction pathology
IgG and IgM antibodies react to an allergen and activate the complement system, leading to direct damage to the local cells.
133
examples of type 2 hypersensitivity reactions are
haemolytic disease of the newborn and transfusion reactions.
134
type 3 hypersensitivity reaction involves
Immune complexes accumulate and cause damage to local tissues.
135
type 3 hypersensitivity reaction examples
systemic lupus erythematosus (SLE), rheumatoid arthritis and Henoch-Schönlein purpura (HSP)
136
type 4 hypersensitivity reaction pathology
Cell mediated hypersensitivity reactions caused by T lymphocytes. T-cells are inappropriately activated, causing inflammation and damage to local tissues.
137
examples of type 4 hypersensitivity reactions include
organ transplant rejection and contact dermatitis.
138
three main ways to test for an allergy are
Skin prick testing RAST testing, which involves blood tests for total and specific immunoglobulin E (IgE) Food challenge testing
139
RAST testing involves
measures the total and allergen specific IgE quantities in the patient’s blood sample
140
following exposure to an allergen treatment is
Antihistamines (e.g. cetirizine) Steroids (e.g. oral prednisolone, topical hydrocortisone or IV hydrocortisone) Intramuscular adrenalin in anaphylaxis
141
symptoms of anaphylaxis are
Urticaria Itching Angio-oedema, with swelling around lips and eyes Abdominal pain
142
anaphylaxis can be confirmed by
measuring the serum mast cell tryptase within 6 hours of the event
143
why most children be observed post anaphylactic episode?
as biphasic reactions can occur, meaning they can have a second anaphylactic reaction after successful treatment of the first.
144
tryptase is released upon
cell degranulation
145
examples of non sedating antihistamines are
cetirizine, loratadine and fexofenadine
146
examples of sedating histamines are
chlorphenamine (Piriton) and promethazine
147
rapid reaction to cows milk indicates what ab mediated cows milk allergy
IgE mediated.
148
is cows milk intolerance an allergic process?
no
149
GI symptoms of cows milk allergy?
Bloating and wind Abdominal pain Diarrhoea Vomiting
150
general allergic symptoms to cows milk protein
``` Urticarial rash (hives) Angio-oedema (facial swelling) Cough or wheeze Sneezing Watery eyes Eczema ```
151
management of cow's milk allergy is with
Breast feeding mothers should avoid dairy products Replace formula with special hydrolysed formulas designed for cow’s milk allergy. every 6 months tried on the milk ladder.
152
what are signs of recurrent infection that should prompt referral?
Chronic diarrhoea since infancy Failure to thrive Appearing unusually well with quite a severe infection, for example afebrile with a large pneumonia Significantly more infections than expected, particularly bacterial lower respiratory tract infections Unusual or persistent infections such as cytomegalovirus, candida and pneumocystis jiroveci
153
tests for recurrent infections should include
FCB, immunoglobulins, complement proteins, antibody responses, HIV, CXR, sweat test and CT (bronchiectasis)
154
SCID presentation is
Persistent severe diarrhoea Failure to thrive Opportunistic infections that are more frequent or severe than in healthy children, for example severe and later fatal chickenpox, Pneumocystis jiroveci pneumonia and cytomegalovirus Unwell after live vaccinations such as the BCG, MMR and nasal flu vaccine Omenn syndrom
155
more than 50% of SCID cases are due to
mutations in the common gamma chain on the X chromosome that codes for interleukin receptors on T and B cells
156
omen syndrome is the result of a mutation on
t is the result of a mutation in the recombination-activating gene (RAG 1 or RAG 2) that codes for important proteins in T and B cells.
157
omen syndrome genetic transmission is through
autosomal recessive
158
features of omen syndrome are
``` A red, scaly, dry rash (erythroderma) Hair loss (alopecia) Diarrhoea Failure to thrive Lymphadenopathy Hepatosplenomegaly ```
159
Tx of SCID involves
Ig therapy, sterile enviroment, avoiding live vaccines, and haematopoietic stem cell transplantation
160
what infections are particularly common with B cell and immunoglobulin disorders
LRTI
161
the most common immunoglobulin deficiency is
IgA
162
IgA protects
mucous membranes, such as saliva, respiratory tract secretions, GI tract secretions, tears and sweat.
163
Common Variable Immunodeficiency results in deficiencies in
IgG and IgA, with or without a deficiency in IgM.
164
DiGeorge Syndrome is also known as
22q11.2 deletion syndrome,
165
22q11.2 deletion syndrome leads to what embryological birth defect?
developmental defect in the third pharyngeal pouch and third branchial cleft.
166
with 22q11.2 deletion syndrome and the developmental defect in the third pharyngeal pouch and third branchial cleft what is the clinical relevance of this?
One of the consequences of this is incomplete development of the thymus gland. An underdeveloped thymus gland results in an inability to create functional T cells.
167
features of digeorge syndrome are
C – Congenital heart disease A – Abnormal facies (characteristic facial appearance) T – Thymus gland incompletely developed C – Cleft palate H – Hypoparathyroidism and resulting Hypocalcaemia 22nd chromosome affected
168
Purine Nucleoside Phosphorylase Deficiency genetic transmission
autosomal recessive
169
Purine Nucleoside Phosphorylase Deficiency pathology
NPase is an enzyme that helps breakdown purines. Without this enzyme, a metabolite called dGTP builds up. This metabolite is exclusively toxic to T cells
170
result of Purine Nucleoside Phosphorylase Deficiency is
Clinically, patients immunity to infection gradually gets worse. They become increasingly susceptible to infections, particularly viruses and live vaccines.
171
Wiskott-Aldrich Syndrome genetic transmission is
X-linked
172
Wiskott-Aldrich Syndrome results in
abnormal functioning T cells
173
Ataxic Telangiectasia genetic transmission
autosomal recessive
174
Ataxic Telangiectasia effects the gene coding for
ATM serine/threonine kinase protein - important for DNA coding
175
Ataxic Telangiectasia gene defect is on chromosome
11
176
Ataxic Telangiectasia features
Low numbers of T-cells and immunoglobulins, causing immunodeficiency and recurrent infections. Ataxia: problems with coordination due to cerebellar impairment Telangiectasia, particularly in the sclera and damaged areas of skin Predisposition to cancers, particularly haematological cancers Slow growth and delayed puberty Accelerated ageing Liver failure
177
complement proteins are important for what organisms
Haemophilus influenza B Streptococcus pneumonia Neisseria meningitidis
178
complement deficiency and SLE pathology
as an incomplete complement cascade leads to immune complexes building up and being deposited in tissues, leading to chronic inflammation.
179
what complement deficiency is the most common?
C2
180
bradykinin role in inflammatory response
promoting blood vessel dilatation and increased vascular permeability, leading to angioedema
181
C1 esterase role is to
inhibit bradykinin
182
absence of C1 esterase leads too
intermittent angioedema in response to minor triggers, such as viral infections or stress, or without any clear trigger at all.
183
test for hereditary angioedema (C1 esterase inhibitor deficiency) is to check
he levels of C4 (compliment 4). C4 levels will be low in the condition
184
mannose-binding lectin leads to inhibition of the
alternative pathway of the complement system.
185
examples of inactivated vaccines
Polio Flu vaccine Hepatitis A Rabies
186
examples of subunit and conjugate vaccines
``` Pneumococcus Meningococcus Hepatitis B Pertussis (whooping cough) Haemophilus influenza type B Human papillomavirus (HPV) Shingles (herpes-zoster virus) ```
187
examples of live attenuated vaccines
Measles, mumps and rubella vaccine: contains all three weakened viruses BCG: contains a weakened version of tuberculosis Chickenpox: contains a weakened varicella-zoster virus Nasal influenza vaccine (not the injection) Rotavirus vaccine
188
8 weeks vaccine schedule
6 in 1 vaccin meningococcal type B Rotavirus (oral vaccine)
189
6 in 1 vaccine covers
6 in 1 vaccine (diphtheria, tetanus, pertussis, polio, haemophilus influenzae type B (Hib) and hepatitis B)
190
12 weeks vaccine schedule
6 in 1 vaccine (again) Pneumococcal (13 different serotypes) Rotavirus (again
191
16 weeks vaccine schedule
6 in 1 vaccine (again) | Meningococcal type B (again)
192
1 year vaccine schedule
``` 2 in 1 (haemophilus influenza type B and meningococcal type C) Pneumococcal (again) MMR vaccine (measles, mumps and rubella) Meningococcal type B (again) ```
193
3 years vaccine schedule
``` 4 in 1 (diphtheria, tetanus, pertussis and polio) MMR vaccine (again) ```
194
12-13 years vaccine schedule
Human papillomavirus (HPV) vaccine (2 doses given 6 to 24 months apart)
195
14 years vaccine schedule
3 in 1 (tetanus, diphtheria and polio) | Meningococcal groups A, C, W and Y
196
sepsis pathology leading from recognition to immune activation
by macrophages, lymphocytes and mast cells. These cells release vast amounts of cytokines, to alert the immune system to the invader. These cytokines activate other parts of the immune system. This immune activation leads to further release of chemicals such as nitrous oxide The immune response causes inflammation throughout the body.
197
examples of cytokines
such as interleukins and tumor necrosis factor
198
nitrous oxide causes
that causes vasodilation.
199
role of cytokines in sepsis
cause the endothelial lining of blood vessels to become more permeable. This causes fluid to leak out of the blood into the extracellular space, leading to oedema and a reduction in intravascular volume.
200
consequences of oedema in sepsis
The oedema around blood vessels creates a space between the blood and the tissues, reducing the amount of oxygen that reaches the tissues.
201
activation of coagulation system in sepsis pathophysiology
coagulation system leads to deposition of fibrin throughout the circulation, further compromising organ and tissue perfusion. It also leads to consumption of platelets and clotting factors, as they are being used up to form the blood clots.
202
the consumption of platelets and clotting factors in sepsis leads too and is overall called
his leads to thrombocytopenia, haemorrhages and an inability to form clots and stop bleeding. This is called disseminated intravascular coagulopathy
203
the waste product of anaerobic respiration is
lactate
204
septic shock should be aggressively treated with
IV fluids
205
in ITU what drug is considered to aid in tissue perfusion during sepsis
inotropes (such as noradrenalin)
206
signs of sepsis
``` Deranged physical observations Prolonged capillary refill time (CRT) Fever or hypothermia Deranged behaviour Poor feeding Inconsolable or high pitched crying High pitched or weak cry Reduced consciousness Reduced body tone (floppy) Skin colour changes (cyanosis, mottled pale or ashen) ```
207
any child under 3 months with a fever >38 need to be treated for
sepsis
208
immediate management for sepsis should involve
Give oxygen if the patient has evidence of shock or oxygen saturations are below 94% Obtain IV access (cannulation) Blood tests, including a FBC, U&E, CRP, clotting screen (INR), blood gas for lactate and acidosis Blood cultures, ideally before giving antibiotics Urine dipstick and laboratory testing for culture and sensitivities Antibiotics according to local guidelines. They should be given within 1 hour of presentation.
209
IV fluid bolus ratio for sepsis is
20ml/kg
210
when should an IV fluid bolus be delivered in sepsis
lactate >2mmol/L
211
Neisseria meningitidis is what sort of bacteria?
gram negative diploccous
212
Meningococcal septicaemia is the cause of the classic
non-blanching rash
213
non-blanching rash may be a sign of
disseminated intravascular coagulopathy (DIC) and subcutaneous haemorrhages
214
in neonates common cause of bacterial meningitis is
group B Streptococcus
215
neonate presentation of sepsis
hypotonia, poor feeding, lethargy, hypothermia and a bulging fontanelle.
216
lumbar puncture according to Nice should be a part of the investigations for
Under 1 months presenting with fever 1 to 3 months with fever and are unwell Under 1 years with unexplained fever and other features of serious illness
217
two special tests for meningeal irritation are
Kernig’s test | Brudzinski’s test
218
kernig's test involves
involves lying the patient on their back, flexing one hip and knee to 90 degrees and then slowly straightening the knee whilst keeping the hip flexed at 90 degrees. This creates a slight stretch in the meninges.
219
positive kernig's test will be when
there is meningitis it will produce spinal pain or resistance to movement.
220
bruzinski's test involves
involves lying the patient flat on their back and gently using your hands to lift their head and neck off the bed and flex their chin to their chest.
221
positive brudzinski's test involves
In a positive test this causes the patient to involuntarily flex their hips and knees.
222
in community bacteria meningitis should involve
urgent stat injection (IM or IV) of benzylpenicillin prior to transfer to hospital as time is so important.
223
under 3 months antibiotics for meningitis should be
cefotaxime plus amoxicillin
224
older then 3 months antibiotics for meningitis should be
ceftriaxone
225
other considerations for meningitis treatment are
steroids dexamethasone for hearing loss and notify public health
226
post exposure prophylaxis to meningitis antibiotic is
single dose ciprofloxacin
227
bacteria in CSF
will release proteins and use up the glucose and stimulate neutrophils
228
viruses in CSF
don't use glucose, release a small amount of protein and stimulate lymphocytes.
229
complications of meningitis
Hearing loss is a key complication Seizures and epilepsy Cognitive impairment and learning disability Memory loss Cerebral palsy, with focal neurological deficits such as limb weakness or spasticity
230
commonest cause of infective paediatric encephalitis is
herpes simplex virus
231
presentation of encephalitis
``` Altered consciousness Altered cognition Unusual behaviour Acute onset of focal neurological symptoms Acute onset of focal seizures Fever ```
232
diagnosis of encephalitis is with
lumbar puncture, viral PCR, CT, MRI, EEG, swabs and HIV
233
CI to lumbar punctures include
GCS below 9, haemodynamically unstable, active seizures or post-ictal.
234
herpes simplex virus (HSV) and varicella zoster virus (VZV) TX
aciclovir
235
CMV Tx
Ganciclovir
236
infective mononucleosis is caused by
epstein barr virus
237
infective mononucelosis is also known as
glandular fever
238
adolescent with a sore throat, who develops an itchy rash after taking amoxicillin what is the underlyign cause?
infective mononucleosis
239
features of infective mononucelosis
``` Fever Sore throat Fatigue Lymphadenopathy (swollen lymph nodes) Tonsillar enlargement Splenomegaly and in rare cases splenic rupture ```
240
in infectious mononucleosis the body produces
heterophile antibodies
241
heterophile antibodies can be tested for via
Monospot test: this introduces the patient’s blood to red blood cells from horses or Paul-Bunnell test: this is similar to the monospot test but uses red blood cells from sheep.
242
acute infection by EBV would be demonstrated through
IgM
243
immunity to EBV would be demonstrated by
IgG
244
EBV is associated with
buritt's lymphoma
245
mumps is a what infection and spread by?
viral infection spread by respiratory droplets
246
presentation of mumps is
initial period of flu-like symptoms known as the prodrome. These occur a few days before the parotid swelling: ``` Fever Muscle aches Lethargy Reduced appetite Headache Dry mouth ```
247
complications of mumps presentation
Abdominal pain (pancreatitis) Testicular pain and swelling (orchitis) Confusion, neck stiffness and headache (meningitis or encephalitis)
248
mumps Dx
PCR testing on a sliva swab
249
who must you notify with a mumps infection?
public health
250
how may HIV spread to a child?
pregnancy, birth or breastfeeding. This is referred to as vertical transmission.
251
prophylaxis for HIV during birth if >10000 copies/ml
IV zidovudine
252
hepatitis B is what sort of virus?
DNA
253
spread of hepatitis B is
vertical, or blood, or sex.
254
infection history for hep B
Most children fully recover from the infection within 2 months, however a portion go on to become chronic hepatitis B carriers.
255
Surface antigen (HBsAg) indicates
active infection
256
E antigen (HBeAg) indicates
marker of viral replication and implies high infectivity
257
Core antibodies (HBcAb) indicates
implies past or current infection
258
Surface antibody (HBsAb) indicates
implies vaccination or past or current infection
259
Hepatitis B virus DNA (HBV DNA) is used for
this is a direct count of the viral load
260
initial viral markers for hep B should be
HBcAb (for previous infection) and HBsAg (for active infection)
261
levels of HBeAG reflect
infectivity
262
Hep B + mothers within 24 hours of birth should be given
Hepatitis B vaccine | Hepatitis B immunoglobulin infusion
263
is it safe for hep B breastfeeding?
yes if received vaccine and immunoglobulin infusion.
264
hep C type of virus
RNA virus
265
disease course of Hep C in adults
1 in 4 fight off the virus and make a full recovery | 3 in 4 develop chronic hepatitis C
266
complications of Hep c in adults
Liver cirrhosis and associated complications of cirrhosis | Hepatocellular carcinoma
267
testing for Hep C involves
Hepatitis C antibody is the screening test | Hepatitis C RNA testing
268
Hepatitis C RNA testing is used to
confirm the diagnosis of hepatitis C, calculate viral load and identify the genotype
269
does Hep C spread via breastfeeding?
no
270
in children over 3 years old treatment for hep C inovles
pegylated interferon and ribavirin, but treatment is usually delayed until adulthood
271
commonest cause of bacterial tonsillitis is
group A streptococcus (Streptococcus pyogenes)
272
most common cause of otitis media, rhino sinusitis and second most common bacterial cause of tonsillitis is
Streptococcus pneumoniae.
273
waldeyer's tonsillar ring refers too
adenoid, tubal tonsils, palatine tonsils and the lingual tonsil.
274
centor criteria is for
probability of tonsillitis being due to bacteria infection
275
centor criteria are
Fever over 38ºC Tonsillar exudates Absence of cough Tender anterior cervical lymph nodes (lymphadenopathy)
276
alternative to the centor critera is the
FeverPAIN score
277
feverpain criteria
``` Fever during previous 24 hours P – Purulence (pus on tonsils) A – Attended within 3 days of the onset of symptoms I – Inflamed tonsils (severely inflamed) N – No cough or coryza ```
278
first line for antibiotics in tonsillitis
penicillin.
279
quinsy refers too and is a complication of
peritonsillar abscess, tonsillitis
280
presentation of quinsy
``` Sore throat Painful swallowing Fever Neck pain Referred ear pain Swollen tender lymph nodes Trismus (unable to open mouth) changes in voice. ```
281
Tx for quinsy is
incision and drainage under GA
282
No of episodes required for tonsillectomy
7 or more in 1 year 5 per year for 2 years 3 per year for 3 year
283
complication of tonsillectomy is
bleeding
284
options for post tonsillectomy bleeding are
IV access, group and save/crossmatch, hydrogen peroxide gargles or adrenalin topically applied.
285
Otitis media is the name given to the
infection of the middle ear
286
presentation of otitis media is
ear pain, reduced hearing, fever, cough, coryzal symptoms, sore throat and general unwellness
287
normal tympanic membrane should look like
“pearly-grey”, translucent and slightly shiny. with cone of light reflex.
288
otitis media ear presentation
bulging, red, inflamed looking membrane.
289
for severe otitis media or immunocompromised antibiotics should be
amoxicillin for 5 days
290
glue ear is known as
otitis media with effusion.
291
otoscopy of glue ear should reveal
dull tympanic membrane with air bubbles of visible fluid level.
292
if necessary glue ear may be treated with
grommets.
293
audiometry sensorineural hearing loss results
both air and bone conduction readings will be more than 20 dB, plotted below the 20 dB line on the chart. on affected sides
294
conductive hearing loss, audiometry results
bone conduction readings will be normal (between 0 and 20 dB), however air conduction readings will be greater than 20 dB,
295
mixed hearing loss audiometry results
both air and bone conduction readings will be more than 20 dB, however there will be a difference of more than 15 dB between the two (bone conduction > air conduction).
296
nosebleeds commonly arise from
Kiesselbach’s plexus, which is also known as Little’s area
297
unstable severe nosebleed may require
Nasal packing using nasal tampons or inflatable packs | Nasal cautery using a silver nitrate stick
298
cystic hygroma is a malformation of the
lymphatic system
299
cystic hygroma can often me found on the
posterior triangle of the neck left side
300
features of cystic hygromas are
Can be very large Are soft Are non-tender Transilluminate
301
mx of cystic hygroma is
aspiration
302
thyroglossal cyst is the result of what persisting?
thyroglossal duct
303
differential for thyroglossal cyst is
ectopic thyroid tissue
304
features of thyroglossal cysts is
Mobile Non-tender Soft Fluctuant
305
diagnosis of thyroglossal cyst is
US or CT
306
branchial cyst is the result of
second branchial cleft fails to properly form and instead the space fills with fluid
307
branchial cyst usually presents
round, soft, cystic swelling between the angle of the jaw and the sternocleidomastoid muscle in the anterior triangle of the neck. This swelling will transilluminate with light,
308
growth plates are made from
hyaline cartilage
309
growth plate sits between the
epiphysis and metaphysis
310
children have more what type of bone compared to adults
cancellous, flexible but less strong compared to cortical in adults.
311
most likely fracture for children
greenstick, one side of the bone breaks.
312
growth plate fractures classification are called
Salter Harris classification
313
Salter harris classification of fractures
``` Type 1: Straight across Type 2: Above Type 3: BeLow Type 4: Through Type 5: CRush ```
314
first principle of managing a fracture
mechanical alignment Closed reduction via manipulation of the joint Open reduction via surgery
315
second principle of managing a fracture
achieving relative stability via ``` External casts K wires Intramedullary wires Intramedullary nails Screws Plate and screws ```
316
pain management in children step 1 and step 2
Step 1: Paracetamol or ibuprofen | Step 2: Morphine
317
why is aspirin CI in children
spirin is contraindicated in children under 16 due to the risk of Reye’s syndrome
318
0-4 years differentials for hip pain
Septic arthritis Developmental dysplasia of the hip (DDH) Transient sinovitis
319
5-10 years differentials for hip pain
Septic arthritis Transient sinovitis Perthes disease
320
10-16 years differentials for hip pain
Septic arthritis Slipped upper femoral epiphysis (SUFE) Juvenile idiopathic arthritis
321
red flags for hip pain are
``` Child under 3 years Fever Waking at night with pain Weight loss Anorexia Night sweats Fatigue Persistent pain Stiffness in the morning Swollen or red joint ```
322
presentation of septic arthritis
Hot, red, swollen and painful joint Refusing to weight bear Stiffness and reduced range of motion Systemic symptoms such as fever, lethargy and sepsis
323
commonest cause of septic arthritis
staph. aureus
324
other bacteria involved in septic arthritis
Neisseria gonorrhoea (gonococcus) in sexually active teenagers Group A streptococcus (Streptococcus pyogenes) Haemophilus influenza Escherichia coli (E. coli)
325
Ix of septic arthritis includes
aspiration with gram staining, crystal microscopy, culture and antibiotics sensitivities
326
does transient synovitis occur alongside a fever?
no
327
transient synovitis often occurs a few weeks post
viral URTI
328
pathology of Perthe's disease is
Perthes disease involves disruption of blood flow to the femoral head, causing avascular necrosis of the bone
329
main complication of Perther's disease is
neovascularisation leading to a soft and deformed femoral head causing early osteoarthritis
330
Perthe's presentation
Perthes disease present with a slow onset of: Pain in the hip or groin Limp Restricted hip movements There may be referred pain to the knee NO HISTORY OF TRAUMA
331
Ix for Perthe's disease
X-rat first lne, blood tests, technetium bone scan and MRI
332
Mx of perthe's involves
``` regular x-rays, Bed rest Traction Crutches Analgesia PT and sometimes surgery. ```
333
SUFE refers too
slipped capital femoral epiphysis
334
presenting symptoms of SUFE
Hip, groin, thigh or knee pain Restricted range of hip movement Painful limp Restricted movement in the hip
335
examination signs of SUFE
hip will be externally rotated and restricted internal rotation
336
common bacteria for osteomyelitis is
Staph. aureus
337
presentation of osteomyelitis
``` Refusing to use the limb or weight bear Pain Swelling Tenderness low grade fever ```
338
IX for osteomyelitis
x-rays, MRI, bone scan, blood tests (WBC, ESR, CRP), blood culture, bone marrow aspirate or bone biopsy,
339
mx for osteomyelitis
antibiotics therapy, drainage and debridement.
340
common site for osteosarcoma is the
femur
341
main presenting features for osteosarcoma are
persistent bone pain, bone swelling, a palpable mass and restricted joint movements.
342
Dx for osteosarcoma is
urgent X-ray, raised ALK P,
343
staging for osteosarcoma involves
``` CT scan MRI scan Bone scan PET scan Bone biopsy ```
344
X-ray of osteosarcoma will reveal
periosteal reaction (irritation of the lining of the bone) that is classically described as a “sun-burst” appearance
345
Mx of osteosarcoma is
MDT, surgical resection, limp amputation and adjuvant chemotherapy.
346
talipes equinovarus refers too
plantar flexion and supination.
347
Talipes calcaneovalgus refers too
dorsiflexion and pronation.
348
non-surgical method for treating talipes is
Ponseti method - cast is applied to hold it in position. This is repeated over and over until the foot is in the correct position.
349
Developmental dysplasia of the hip (DDH) refers too
abnormal development leading to instability in the hips and a tendency or potential for subluxation or dislocation.
350
Risk factors for DDH
First degree family history Breech presentation from 36 weeks onwards Breech presentation at birth if 28 weeks onwards Multiple pregnancy
351
examination signs that indicate DDH are
Different leg lengths Restricted hip abduction on one side Significant bilateral restriction in abduction Difference in the knee level when the hips are flexed Clunking of the hips on special tests
352
two tests for DDH are
ortolani test and barlow test
353
ortolani test involves
with the baby on their back with the hips and knees flexed, abduct the hips and apply pressure to anteriorly dislocate hips.
354
barlow test invovles
baby on their back with the hips adducted and flexed at 90 degrees and knees bent at 90 degrees to see if femoral head will dislocate posteriorly
355
suspicion of DDH warrants
US
356
Mx of DDH is through
palvik harness to keep the hips flexed and abducted. surgical requires a hip spica cast to immobilise the hip.
357
ricket's is caused by
deficiency in vitamin D or calcium
358
vit D is essential for
essential in calcium and phosphate absorption from the intestines and kidneys as well as regulating bone turnover and reabsorption.
359
low calcium causes
secondary hyperparathyroidism as the parathyroid gland tries to raise the calcium level by secreting parathyroid hormone.
360
rickets/osteomalacia presents with
``` Lethargy Bone pain Swollen wrists Bone deformity Poor growth Dental problems Muscle weakness Pathological or abnormal fractures ```
361
ricket bone deformities include
bowing of the legs, knock knees, craniotabes (soft skull), delayed teeth development, rachitic rosary where the ends of the rips expand.
362
initial Ix for rickets are
Serum 25-hydroxyvitamin D and X-ray
363
other Ix for rickett's
Serum calcium may be low Serum phosphate may be low Serum alkaline phosphatase may be high Parathyroid hormone may be high
364
Tx of ricket's
Vit D replacement and calcium supplementation.
365
achondroplasia is the common cause of
disproportionate short stature
366
achondroplasia gene is the
fibroblast growth factor receptor 3 (FGFR3), is on chromosome 4.
367
genetic transmission of achondroplasia is
autosomal dominant
368
Osgood-Schlatters Disease is caused by
inflammation at the tibial tuberosity where the patella ligament inserts.
369
typical demographic for presentation of osgood schlatters disease
It typically occurs in patients aged 10 – 15 years, and is more common in males. Osgood-Schlatter disease is usually unilateral, but it can be bilateral.
370
presentation of osgood schlatter's disease
Visible or palpable hard and tender lump at the tibial tuberosity Pain in the anterior aspect of the knee The pain is exacerbated by physical activity, kneeling and on extension of the knee
371
Mx of osgood schlatter's disease
Reduction in physical activity Ice NSAIDS (ibuprofen) for symptomatic relief stretching and PT post
372
rare complication of osgood schlatter's disease is
avulsion fracture
373
osteogenesis imperfecta is also known as
brittle boen disease
374
pathology of osteogenesis imperfecta is
collegen malformation
375
presentation of osteogenesis imperfecta
Hypermobility Blue / grey sclera (the “whites” of the eyes) Triangular face Short stature Deafness from early adulthood Dental problems, particularly with formation of teeth Bone deformities, such as bowed legs and scoliosis Joint and bone pain
376
medical treatments for osteogensis imperfecta are
Bisphosphates to increase bone density | Vitamin D supplementation to prevent deficiency
377
acute rheumatic fever is triggered by
autoimmune condition triggered by streptococcus bacteria.
378
pathophysiology of rheumatic fever
group A beta-haemolytic streptococcal stimulate ab response but the antigens matches that of the myocardium of the heart.
379
rheumatic fever is an example of what type of hypersensitivity reaction.
type 2
380
presentation of rheumatic fever
``` 2-4 weeks following tonsillitis with: Fever Joint pain Rash Shortness of breath Chorea Nodules ``` and migratory arthritis
381
heart involvement of rheumatic fever
Tachycardia or bradycardia Murmurs from valvular heart disease, typically mitral valve disease Pericardial rub on auscultation Heart failur
382
skin involvement of rheumatic fever includes
Firm painless nodules occur over extensor surfaces of joints, such as the elbows. The erythema marginatum rash involves pink rings of varying sizes affecting the torso and proximal limbs.
383
CNS involvement of rheumatic fever includes
this involves irregular, uncontrolled and rapid movements of the limbs. known as chorea or St vitus' dance
384
assessment for rheumatic fever includes
Throat swab for bacterial culture ASO antibody titres Echocardiogram, ECG and chest xray
385
criteria for diagnosis of rheumatic feveris
Jones criteria
386
major Jones crtieria for rheumatic fever
``` two of J – Joint arthritis O – Organ inflammation, such as carditis N – Nodules E – Erythema marginatum rash S – Sydenham chorea ```
387
minor criteria for rheumatic fever are
Fever ECG Changes (prolonged PR interval) without carditis Arthralgia without arthritis Raised inflammatory markers (CRP and ESR)
388
management of rheumatic fever should invovle
NSAIDs (e.g. ibuprofen) are helpful for treating joint pain Aspirin and steroids are used to treat carditis Prophylactic antibiotics (oral or intramuscular penicillin) are used to prevent further streptococcal infections and recurrence of the rheumatic fever. These are continued into adulthood. Monitoring and management of complications
389
kawasaki disease is an example of
medium vessel vasculitis
390
features of kawasaki disease are
ersistent high fever (above 39ºC) for more than 5 days. Children will be unhappy and unwell. The key skin findings are a widespread erythematous maculopapular rash and desquamation ``` plus: Strawberry tongue (red tongue with large papillae) Cracked lips Cervical lymphadenopathy Bilateral conjunctivitis ```
391
ix for Kawasaki disease include
Full blood count can show anaemia, leukocytosis and thrombocytosis Liver function tests can show hypoalbuminemia and elevated liver enzymes Inflammatory markers (particularly ESR) are raised Urinalysis can show raised white blood cells without infection Echocardiogram can demonstrate coronary artery pathology
392
Tx for kawaski disease includes
High dose aspirin to reduce the risk of thrombosis | IV immunoglobulins to reduce the risk of coronary artery aneurysms
393
Henoch-Scholein purpura is an example of
IgA vasculitis with a purpuric rash.
394
presentation of HSP
``` Purpura (100%), Joint pain (75%), Abdominal pain (50%) Renal involvement (50%) ```
395
risk of HSP complications with abdominal pain
gastrointestinal haemorrhage, intussusception and bowel infarction.
396
HSP effect on the kidneys are
IgA nephritis with risk of nephrotic syndrome.
397
Mx of HSP is with
supportive with urine dipstick monitoring and blood pressure monitoring.
398
ehler's danlos syndrome is an example of
enetic conditions that cause defects in collagen, resulting in hypermobility of the patient’s joints and abnormalities in connective tissue
399
presentation of ehlers danlos syndrome is
``` Hypermobility in joints Joint pain after exercise or inactivity Joint dislocations, for example the shoulders or hips Soft stretchy skin Easy bruising Poor healing of wounds Bleeding Headaches Autonomic dysfunction causing dizziness and syncope Gastro-oesophageal reflux Abdominal pain Irritable bowel syndrome Menorrhagia and dysmenorrhea Premature rupture of membranes in pregnancy Urinary incontinence Pelvic organ prolapse Temporomandibular joint dysfunction Myopia and othe ```
400
what is the score system for hypermobility
Beighton
401
beighton score for hypermobility
Palms flat on floor with straight legs (score 1) Elbows hyperextend Knees hyperextend Thumb can bend to touch the forearm Little finger hyperextends past 90 degrees
402
what syndrome can occur alongside ehler danlos syndrome
Postural orthostatic tachycardia, result of autonomic dysfunction resulting in presyncope, syncope
403
systemic JIA is also known as
Still's disease
404
systemic JIA (still's disease) presents with
``` Subtle salmon-pink rash High swinging fevers Enlarged lymph nodes Weight loss Joint inflammation and pain Splenomegaly Muscle pain Pleuritis and pericarditis ```
405
biochemical markers of systemic JIA are
Antinuclear antibodies and rheumatoid factors are typically negative. There will be raised inflammatory markers, with raised CRP, ESR, platelets and serum ferritin.
406
key complication of JIA is
macrophage activation syndrome (MAS),
407
macrophage activation syndrome (MAS) involves
It presents with an acutely unwell child with disseminated intravascular coagulation (DIC), anaemia, thrombocytopenia, bleeding and a non-blanching rash. It is life threatening. A key investigation finding is a low ESR.
408
In children that have fevers for more than 5 days, the key non-infective differentials to remember
are Kawasaki disease, Still’s disease, rheumatic fever and leukaemia.
409
Polyarticular JIA is the equivalent of
rheumatoid arthritis: most kids are seronegative for rheumatoid factor.
410
polyarticular JIA presents with
mild fever, anaemia and reduced growth.
411
Oligoarticular JIA classic associated feature is
A classic associated feature with oligoarticular JIA is anterior uveitis. Patients should be referred to an ophthalmologist for management and follow up of uveitis.
412
Oligoarticular JIA commonly effects the
larger joints such as the knee or ankle.
413
Oligoarticular JIA biochem
Antinuclear antibodies are often positive, however rheumatoid factor is usually negative.
414
The majority of patients with enthesitis-related arthritis have the what gene?
HLA B27 gene.
415
entheses refers too
tendon of a muscle inserts into a bone.
416
When assessing patients for enthesitis-related arthritis, consider signs and symptoms of
psoriasis (psoriatic plaques and nail pitting) and inflammatory bowel disease (intermitted diarrhoea and rectal bleeding).
417
enthesitis-related arthritis are prone too
prone to anterior uveitis, and should see an ophthalmologist for screening, even if they are asymptomatic.
418
psoriatic arthritis is a
seronegative inflammatory arthritis associated with psoriasis, with either polyarthritis affecting small joints or asymmetrical arthritis affecting large joints of the lower limb
419
medical Mx of JIA
NSAIDs, such as ibuprofen Steroids Disease modifying anti-rheumatic drugs (DMARDs) Biologic therapy, such as the tumour necrosis factor inhibitors
420
Disease modifying anti-rheumatic drugs (DMARDs) examples
such as methotrexate, sulfasalazine and leflunomide
421
TNF inhibitor examples
etanercept, infliximab and adalimumab
422
eczema presents usually with
in infancy with dry, red, itchy and sore patches of skin over the flexor surfaces (the inside of elbows and knees) and on the face and neck.
423
pathophysiology of eczema
eczema is caused by defects in the barrier that the skin provides. Tiny gaps in the skin barrier provide an entrance for irritants, microbes and allergens that create an immune response,
424
the key to maintenance of eczema is
create an artificial barrier over the skin to compensate for the defective skin barrier. this is via thick greasy emollients.
425
specialist treatments for eczema include
severe eczema include zinc impregnated bandages, topical tacrolimus, phototherapy and systemic immunosuppressants, such as oral corticosteroids, methotrexate and azathioprine.
426
steroid ladder mild
Mild: Hydrocortisone 0.5%, 1% and 2.5%
427
very potent steroid ladder
Dermovate (clobetasol propionate 0.05%)
428
complications of topical steroid application for eczema
thinning of the skin, stretch marks, bruising and telangiectasia.
429
commonest opportunistic infection in eczema is
staphylococcus aureus
430
eczema herperticum is a viral skin infection caused by
commonly herpes simplex virus (HSV) or varicella zoster virus (VZV)
431
presentation of eczema herpeticum is
widespread, painful, vesicular rash with systemic symptoms such as fever, lethargy, irritability and reduced oral intake. There will usually be lymphadenopathy (swollen lymph nodes).
432
management of eczema herpeticum is with
aciclovir.
433
presentattion of psoriasis
dry, flaky, scaly, faintly erythematous skin lesions that appear in raised and rough plaques, commonly over the extensor surfaces of the elbows and knees and on the scalp
434
guttate psoriasis presents as
commonly occurs in children. It presents with many small raised papules across the trunk and limbs. The papules are mildly erythematous and can be slightly scaly.
435
guttate psoriasis can be triggered by
streptococcal throat infection
436
what are the two types of psoriasis that are considered emergencies?
Pustular psoriasis and Erythrodermic psoriasis
437
three signs of psoriasis
auspitz sign, koebner phenomenon, residual pigmentation.
438
auspitz sign refers too
small points of bleeding when plaques are scraped off
439
koebner phenomenon refers too
development of psoriatic lesions to areas of skin affected by trauma
440
management of psoriasis is through
Topical steroids Topical vitamin D analogues (calcipotriol) Topical dithranol Topical calcineurin inhibitors (tacrolimus) are usually only used in adults Phototherapy with narrow band ultraviolet B light is particularly useful in extensive guttate psoriasis
441
specialist treatment of psoriasis includes
this might include methotrexate, cyclosporine, retinoids or biologic medications.
442
psoriasis nail signs include
nail pitting, thickening, discolouration, ridging and onycholysis (separation of the nail from the nail bed).
443
psoriasis is associated with
obesity, hyperlipidaemia, hypertension and type 2 diabetes.
444
what bacteria plays a key role in acne?
Propionibacterium acnes
445
pathology of acne.
increased sebum trapping kerating and blocking the pilosebaceous unit. this leads to swelling and inflammation as the follicle becomes infected.
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Macules are
flat marks on the skin
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papules are
small lumps on the skin
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management to reduce inflammation in acne is
Topical benzoyl peroxide reduces inflammation, helps unblock the skin and is toxic to the P. acnes bacteria
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what treatments reduce production of sebum in acne
topical retinoids (chemicals related to vitamin A) slow the production of sebum or Oral contraceptive pill can help female patients stabilise their hormones and slow the production of sebum
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antibiotic options for acne are
Topical antibiotics such as clindamycin (prescribed with benzoyl peroxide to reduce bacterial resistance) Oral antibiotics such as lymecycline
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last line option for acne includes
Oral retinoids for severe acne (i.e. isotretinoin)
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complications of isotretinoin.
Dry skin and lips Photosensitivity of the skin to sunlight Depression, anxiety, aggression and suicidal ideation. Patients should be screened for mental health issues prior to starting treatment. Rarely Stevens-Johnson syndrome and toxic epidermal necrolysis teratogenic.
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measles rash appears as
Koplik spots are greyish white spots on the buccal mucosa. They appear 2 days after the fever. They are pathognomonic
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natural history for measles rash is
The rash starts on the face, classically behind the ears, 3 – 5 days after the fever. It then spreads to the rest of the body. The rash is an erythematous, macular rash with flat lesions.
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scarlet fever rash usually appears as
red-pink, blotchy, macular rash with rough “sandpaper” skin that starts on the trunk and spreads outwards. Patients can have red, flushed cheeks.
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Tx for scarlet fever is
phenoxymethylpenicillin (penicillin V) for 10 days
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features of scarlet fever are
``` Fever Lethargy Flushed face Sore throat Strawberry tongue Cervical lymphadenopathy ```
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cause of scarlet fever is
streptococcus pyogenes (group A strep) bacteria.
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is scarlet fever a notifiable disease?
yes notify public health.
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rubella rash is
milder erythematous macular rash compared with measles. The rash starts on the face and spreads to the rest of the body.
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rubella lash usually lasts
The rash classically lasts 3 days.
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Parvovirus causes what kind of rash?
fifth disease, slapped cheek syndrome and erythema infectiosum.
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parvovirus infection starts with
mild fever, coryza and non-specific viral symptoms such as muscle aches and lethargy. After 2 – 5 days the rash appears quite rapidly as a diffuse bright red rash on both cheeks, as though they have “slapped cheeks”. A few days later a reticular mildly erythematous rash affecting the trunk and limbs appears that can be raised and itchy. Reticular means net-like
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Roseola Infantum is caused by
human herpesvirus 6 (HHV-6)
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presentation of roseola infantum
It presents 1 – 2 weeks after infection with a high fever (up to 40ºC) that comes on suddenly, lasts for 3 – 5 days and then disappears suddenly. There may be coryzal symptoms, sore throat and swollen lymph nodes during the illness. When the fever settles, the rash appears for 1 – 2 days. The rash consists of a mild erythematous macular rash across the arms, legs, trunk and face and is not itchy.
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key complication of roseola infantum
febrile convulsion.
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erythema multiform presents with
produces characteristic “target lesions”. Target lesions are red rings within larger red rings, with the darkest red at the centre, similar to a bulls-eye target. It does not usually affect the mucous membranes but can cause a sore mouth (stomatitis). as well as flu like symptoms.
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erythema multiform is a rash caused by
hypersensitivity reaction.
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erythema multiform with no underlying cause should prompt suspicion of
mycoplasma pneumonia.
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urticaria caused by the release of
histamine
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urticaria Mx is
Fexofenadine is usually the antihistamine of choice for chronic urticaria. Oral steroids may be considered as a short course for severe flares.
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specialist options for urticaria
Anti-leukotrienes such as montelukast Omalizumab, which targets IgE Cyclosporin
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chickenpox rash is
widespread, erythematous, raised, vesicular (fluid filled), blistering lesions. The rash usually starts on the trunk or face and spreads outwards affecting the whole body over 2 – 5 days. Eventually the lesions scab over, at which point they stop being contagious.
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chickenpox is caused by and spread through
Varicella zoster virus and spread spread through direct contact with the lesions or through infected droplets from a cough or sneeze.
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VZV lays dormant in the
sensory dorsal root ganglion cells and cranial nerves reactivate later in life as shingles or Ramsay Hunt syndrome.
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chickenpox itching can be eased with
calamine lotion and chlorphenamine (antihistamine).
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hand, foot and mouth disease may be managed by
coxsackie A virus
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hand, foot and mouth disease presentation
ypical viral upper respiratory tract symptoms such as tiredness, sore throat, dry cough and raised temperature. After 1 – 2 days small mouth ulcers appear, followed by blistering red spots across the body.
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Molluscum Contagiosum is caused by
pox virus
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Molluscum Contagiosum presentation
small, flesh coloured papules (raised individual bumps on the skin) that characteristically have a central dimple.
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Pityriasis Rosea prodrome
These include headache, tiredness, loss of appetite and flu-like symptoms.
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Pityriasis Rosea initial rash
herald patch. This is a faint red or pink, scaly, oval shaped lesion that is 2cm or more in diameter, usually occurring somewhere on the torso.
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Pityriasis Rosea later rash general presentation
The rash consists of widespread faint red or pink, slightly scaly, oval shaped lesions, usually less than 2 cm in diameter. On the torso they can be arranged in a characteristic “christmas tree” fashion,
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Seborrhoeic Dermatitis effects the
scalp, nasolabial folds and eyebrows.
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Seborrhoeic Dermatitis cause
malassezia yeast
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first line treatment for infantile seborrheoic dermatitis
First line treatment is by applying baby oil, vegetable oil or olive oil, gently brushing the scalp then washing off. When this is not effective, white petroleum jelly can be used overnight to soften the crusted areas before washing off in the morning.
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second line for infantile seborrhoeic dermatitis
clotrimazole or miconazole
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first line for paediatric seborrhoeic dermatitis of the scalp
ketoconazole shampoo
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tinea capitis refers too
refers to ringworm affecting the scalp
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Tinea pedis refers to
ringworm affecting the feet, also known as athletes foot
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tinea cruris refers too
ringworm of the groin
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tinea corporis refers too
ringworm of the body
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onychomycosis refers too
fungal nail infection
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most common type of fungus to cause ringworm is called
trichophyton
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ring worm presents as
itchy rash that is erythematous, scaly and well demarcated. There is often one or several rings or circular shaped areas that spread outwards, with a well demarcated edge. The edge is more prominent and red and the area in the centre is more faint in colour.
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Mx of ringworm is with
icroscopy, culture and anti-fungals
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antifungal creams include
clotrimazole and miconazole
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oral antifungals include
fluconazole, griseofulvin and itraconazole
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tinea incognito may be caused by
treating ringworm with steroids.
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scabies are caused by
Sarcoptes scabiei
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scabies presents with
incredibly itchy small red spots, possibly with track marks where the mites have burrowed. The classic location of the rash is between the finger webs,
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scabies are treated with
permethrin cream over whole body, or Oral ivermectin as a single dose
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scabies in the immunocomprimised may cause
crusted scabies.
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erythema nodosum pathology
hypersensitivity reaction causing inflammation of subcutaneous fat on the shins.
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erythema nodosum often indicates
IBD or sarcoidosis
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impetigo usually presents as
golden crust
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impetigo often caused by
staphylococcus skin infection
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Tx for non bullous impetigo includes
Topical fusidic acid , antiseptic cream or in severe cases oral flucloxacillin.
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widespread bullous impetigo is called
staphylococcus scalded skin syndrome.
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staphylococcus scalded skin syndrome pathology
Staph. aureus produced epidermolytic toxins that are protease enzymes
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what sign is positive in SSSS syndrome
nikolsky sign
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nikolsky sign refers too
ery gentle rubbing of the skin causes it to peel away.
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Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) refer too
epidermal necrosis, resulting in blistering and shedding of the top layer of skin.
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Tx for SJS and toxic epidermal necrolysis are
steroids, immunoglobulins and immunosuppressant medications