Paediatrics Flashcards
What are the normal ranges for heart rate in the following age ranges?
- <1
- 1-2
- 2-5
- 5-12
- > 12
<1: 110-160 1-2: 100-150 2-5: 90-140 5-12: 80-120 >12: 60-100
What are the normal ranges for respiratory rate in the following age ranges?
- <1
- 1-2
- 2-5
- 5-12
- > 12
<1: 30-40 1-2: 25-35 2-5: 25-30 5-12: 20-25 >1: 15-20
What would recurrent respiratory infections and weight loss in a child suggest?
What are some other features of this disorder or disease?
Cystic fibrosis
Features:
- Short statue
- DM
- Delayed puberty
- Rectal prolapse (2 to bulky stools)
- Nasal polyps
- Male infertility
- Female subfertility
In meningitis when is LP contraindicated?
Meningococcal septicaemia (raised ICP_
What is the Abx of choice in meningitis?
<3 months
>3 months
<3 months: IV amox + IV cefotaxime
>3 months: IV cefotaxime
If >1 month and H. influenzae then also give dexamethasone.
What is used for antibiotic prophylaxis of meningitis contacts?
Ciprofloxacin
What test would you order in an infant with jaundice lasting >14 days?
Coomb’s test (direct antiglobulin)
What is fragile X syndrome?
What are its features?
Trinucleotide repeat disorder
Features in males:
- Learning difficulties
- large low set ears, long thin face, high arched palate
- macroorchidism
- hypotonia
- autism is more common
- mitral valve prolapse
Females (heterozygous), may be normal/mild symptoms
How is Fragile X diagnosed?
Antenatally: CVS or amnio
CGG repeats analysis using endonuclease digestion and southern blot analysis.
What is palivizumab?
When is it used?
Monoclonal antibody used to prevent RSV in children at risk of severe disease - Premature infants, those with lung or heart abnormalities, immunocompromised
What is the most common ocular malignancy in children?
Retinoblastoma
What is the pathophysiology of retinoblastoma? Is it hereditary?
What is the prognosis?
LOF of retinoblastoma tumour suppressor gene on chromosome 13
10% hereditary
Prognosis is excellent, with >90% surviving into adulthood
What are the presenting features of retinoblastoma?
How is it managed?
- Absence of red-reflex (most common)
- Strabismus
- Visual problems
Mx:
- Enucleation, external beam radiation therapy, chemo, photocoagulation
What is the most common causative organism in Scarlet fever? What specifically causes the reaction?
Group A haemolytic streptococci (usually Streptococcus pyogenes).
Reaction is to the erythrogenic toxins.
When are the two doses of MMR vaccine given?
What are the potential SE?
12-15 months, then 3-4 years.
May have an episode of malaise, fever and rash after first dose, typically after 5-10 days, lasting 2-3 days.
What are the contraindications to MMR?
- severe immunosuppression
- allergy to neomycin
- children who have received another live vaccine by injection within 4 weeks
- pregnancy should be avoided for at least 1 month following vaccination
- immunoglobulin therapy within the past 3 months (there may be no immune response to the measles vaccine if antibodies are present)
In ADHD when would you advise avoiding certain foods/ using fatty acid supplements?
Only after a food diary has shown a link between diet and behaviour - Use an MDT approach including a dietitian.
What are the side effects of methylphenidate (ritalin)?
What monitoring is needed?
Abdo pain, nausea, dyspepsia
Monitor growth every 6 months (not usually affected), monitor for psychiatric disorders and check blood pressure/pulse every 6 months
What are the cardiac associations with Turner’s syndrome?
- Bicuspid aortic valve
- Aortic root dilatation
- Coarctation of the aorta
What is Mesenteric adenitis?
What is the Mx?
Inflamed lymph nodes within the mesentery.
It can cause similar symptoms to appendicitis. It often follows a recent viral infection and needs no treatment
When is the neonatal blood spot screening carried out?
What does it screen for?
= Guthrie test/heel-prick test
5-9 days of life.
Screens for:
- Congenital hypothyroidism
- CF
- Sickle
- Phenylketonuria
- Medium chain acyl-CoA dehydrogenase deficiency (MCADD)
- Maple syrup urine disease (MSUD)
- Isovaleric acidaemia (IVA)
- Glutaric aciduria type 1 (GA1)
- Homocystinuria (pyridoxine unresponsive) (HCU)
What is Bartter’s syndrome?
Features?
Inherited (autosomal recessive) severe hypokalaemia due to defective chloride absorption at the Na+ K+ 2Cl- cotransporter in the ascending loop of Henle.
NORMOtension
- Usually presents in childhood with failure to thrive
- Hypokalaemia
- Polyuria, polydypsia
- Weakness
What are the causes of a false negative CF sweat test?
- Skin oedema (most common - often due to hypoalbuminaemia/ hypoproteinaemia secondary to pancreatic exocrine insufficiency.)
- Poor technique
What are the causes of a false positive CF sweat test?
- malnutrition
- adrenal insufficiency
- glycogen storage diseases
- nephrogenic diabetes insipidus
- hypothyroidism, hypoparathyroidism
- G6PD
- ectodermal dysplasia
- atopic eczema