Flashcards in Emergencies Deck (44):
bacterial causes of meningitis in neonates?
causes of meningitis in those under the age of 3 months:
group B streptococci-*most common cause of severe early onset neonatal infection. Risk reduced with intrapartum IV benzylpenicillin 3g given to mum.
E coli and other coliforms
listeria monocytogenes-*affects immunocompromised individuals
bacterial causes of meningitis in children over the age of 3 months, up to 6 years?
bacterial causes of meningitis in children over 6 yrs?
strep pneumoniae-also cause in adults
why should a LP NOT be performed if any CIs e.g. signs of raised ICP, are present in case of suspected meningitis?
as risk of cerebellum coning through foramen magnum
what investigation confirms meningitis diagnosis and why is it needed?
causative organism can be identified which will determine choice of antibiotic and length of course given
cerebral complications of meningitis?
cerebral abscess-fluctuating temp., signs of SOL emerge, CT confirmation, needs drainage
hydrocephalus-impaired CSF resorption or blockage of ventricular outlets by fibrin due to vasuclopathy induced by inflammation-non-communc. hydrocephalus
local vasculitis-cranial nerve palsies or other focal lesions
local cerebral infarct-may cause seizures, may lead to epilepsy
hearing loss-most common complication of viral meningitis*
SD effusion-most spontaneously resolve but may need prolonged Abx treatment
how are family members of meningitis pt treated?
prophylaxis with rifampicin to eradicate NP carriage given to all household contacts for meningococcal meningitis and H.influenzae infection.
if group C meningococcal cause should have appropriate vaccine
symptoms and signs of meningitis in children?
o/e: fever, purpuric rash-MENIGOCOCCAL SEPTICAEMIA, neck stiffness, bulging fontanelle in infants, opisthotonus, +ve Brudzinski sign-neck flexion with child supine causes knee and hip flexion, +ve Kernig sign-with child lying supine with hips and knees flexed, there is back pain on knee extension.
signs of shock-CRT more than 2 s, raised RR, raised HR
focal neurological signs, altered conscious level, pailloedema
local infection at LP site
thrombocytopenia-PLT must be at least 100
CR instability, pt intubated, shock
signs of raised ICP e.g. high BP, low HR, papillodema
focal neurological signs
if it causes undue delay in starting Abx
describe the features of the rash seen in meningococcemia
may be initially blanching maculopaular rash
then non blanching purpuric rash
when should dexamethasone NOT be given in treatment of meningitis?
meningitis following surgery
not more than 12 hrs after starting antibacterial
meningitis tment in hospital if meningococcal disease?
-benzylpenicllin sodium OR cefotaxime OR ceftriaxone, 7 day treatment
-not ceftriaxone in neonates as risk of biliary sludging and hyperbilirubinaemia with bilirubin displacement from albumin (which ceftriaxone binds to) and risk of bilirubin encephalopathy
if allergy give chloramphenicol
what do we want to know about a pyrexic child?
duration of fever, and if it occurs at part. times during the day
general features-poor appetite, malaise, headache, diarrhoea, vomiting
pain-earache, headache, dysphagia, dysuria, excessive crying
specific-vomiting, diarrhoea, coryza, cough, rash
other children unwell at home? nursery?
any abnormal movements of child?-*febrile convulsions
physical examination in a pyrexic child?
general-are they seriously unwell? dehydrated? tachycardic or tachypnoeic
skin-rash?-non blanching petechial or purpuric lesions-meningococcaemia, blanching fine punctate rash-scarlet fever, maculopapular rash beginning on face in measles.
chest-?resp distress-nasal flaring, grunting, tracheal tug, tachypnoea, chest wall recession. signs of bronchiolitis-fine end insp crackles, expir more so than inspir wheeze, pneumonia-coarse crackles, reduced air entry, bronchial breathing, dull percussion note.
ears-bulging red TMs
CNS-orientatied, are they floppy?, assess for neck stiffness or kernig's sign in older children.
temperature-pyrexia defined as temp of 38 or higher in a child, measured using thermometer in axilla or infra-red tympanic thermometer.
what should always be suspected as cause of fever in a child of any age?
management of fever as a symptom?
antipyretics-paracetamol e.g. calpol, ibuprofen, NOT aspirin-risk of Reye's syndrome
sponging or tepid baths-lukewarm water to allow vasodilatation and evaporative heat loss.
likely differential in child with fever and itchy vesicular rash?
how can pupuric rash of meningococcaemia be differentiated from henoch-schonlein purpura and idiopathic thrombocytopenic purpura?
HSP and ITP-absence of fever
ITP-low PLT count
what diagnosis is suggested in child with fever and an enanthem?
enanthem=small spots in mucous membranes
chickenpox-vesicles break down rapidly forming shallow ulcers
measles-koplik spots seen in prodromal period only-like salt grains on red bkground-tiny white specks. measles-maculopapular rash starts on face, spreads d.wards with cough, coryza and conjunctivitis.
when does a viral exanthem (skin rash) require a serological diagnostic confirmation?
if maculopapular rash in a pregnant girl-need to measure rubella titres
why might blood culture in meningococcameia be -ve?
pt should have been given IM benzylpenicillin before hospital admission
why should position of ear be noted in enlarged neck glands?
displacement of ear upwards and outwards feature of parotid gland swelling e.g mumps-paramyxovirus
ear may be pushed forwards and outwards with acute mastoiditis e.g. following acute otitis media.
what investigation could be used to distinguish parotid swelling from other lymph glands?
serum or urine amylase-elevated in mumps
features of a non-specific viral infection?
'flu' often used to describe symptoms:
brief but acute illness with fever, malaise, chills, headache, cough and myalgia
non-specific erythematous rash
usually due to influenza infection
define pyrexia of unknown origin (PUO)?
prolonger fever-more than 1wk in young children an 2-3wks in adolescent, with no apparent infection site
important consideration of cause of pyrexia of unknown origin in child with congenital HD?
what should be considered in a boy with remitting fever (daily fluctuations but never returning to normal), variable rash and later joint pain?
systemic juvenile idiopathic arthritis:
rarest form, where joint symptoms may not be present at outset. remitting fever, variable rash, hepatosplenomegaly, anaemia, weight loss or abdo pain.
ANA and rheumatoid factor -ve
distinguish from polyarticular-painful swelling and restricted movement in large and small joints, girls, ANA may be positive, and pauciarticular-girls under 4 yrs, fewer than 5 joints-knees, ankles, elbows, ANA may be +ve, risk of chronic anterior uveitis.
how can factitious fever be suspected from child's examination?
absence of tachycardia and sweating assoc. with peaks of fever on temperature chart
when would an alternative to IV/IO lorazepam be given, and what would be given, in the management of status epilepticus?
if IV/IO access cannot be obtained
PR diazepam or buccal midazolam
if seizure in status epilepticus still persisting after 5mins following lorazepam, what is next step?
2nd dose of lorazepam
if still persist then call anaesthetist
whilst waiting can give PR paraldehyde
monitor ECG, and give phenytoin IV/IO over 20 mins, consider midazolam or phenobarbitone instead if already on phenytoin, over 10 mins
if seizure over 45mins at any time, do rapid sequence induction with thiopentone by anaesthetist
routine investigations in status epilepticus?
blood glucose, Ca2+, Mg2+, Us and Es, ABGs
depending on hx and exam: FBC, CRP, LFTs, , blood and urine culture, septic screen, LP, ammonia, lactate and metabolic screen.
MRI if prolonged focal seizure and persisting focal neurological signs.
ADRs of BZD treatment of status epilepticus?
sedation, drowsiness, unsteadiness, ataxia
increase in aggression
IV diazepam is decided to be administered for status epilepticus as IV lorazepam is unavailable, what else MUST be prescribed?
flumazenil in the as required section, for reversal of severe ADRs-resp depression.
how can the risk of serious illness in children with a fever be assessed?
NICE traffic light system, green-low risk, amber-intermediate, and red-high
based on child's colour, activity, RR, HR and hydration-amber-reduced urine output-ask about wet nappies in infant, and other e.g. amber-fever for 5 or more days, temp 39 or more, rigors in a child aged 3-6mnths, limb or joint swelling, limb pseudoparalysis-non WB/not using.
red-non-blanching rash, bulging fontanelle, focal neurological signs, neck stiffness, focal seizures, status epilepticus, temp 38 or higher in child 0-3mnths of age.
what is kawasaki disease?
idiopathic self-limiting systemic vasculitis
typically affects children aged 6mnths-5years, peak incidence-between 1 and 2 years
boys more commonly than girls
Asian ethinicity-?genetic susceptibility
thought that disease occurs in those susceptible with abnormal immune response to infective trigger, causing systemic vasculitis affecting small and medium sized arteries
major complication of coronary artery aneurysm formation
classical features of kawasaki disease?
fever in child lasting 5 days or more, abrupt onset, 39 or more
marked irritability of child, out of proportion to degree of fever
bilateral conjunctivitis, non-purulent
lip, mouth and/or tongue inflammation-lip fissuring, stawberry tongue
desquamation, erythema and swelling of extremities
cervical lymphadenopathy-unilateral, non tender, anterior cervical chain usually
non-vesicular widespread rash, often itchy, starts with erythema of the extremities-palms, soles, perineum
features may appear in turn then go so ensure all asked about in hx
investigations for kawasaki disease?
no diagnostic investigations available
urinalysis may show sterile pyuria, proteinuria may/may not be present
raised ESR and CRP
LFTs-raised transaminases and bilirubin
abdo USS-GB distension
ECHO-CA aneurysms and dilatation, assess LV/valvular function, serial ECHO to detect occult CA disease as illness evolves.
kawasaki disease management?
admit to IP ward-paed or paed cardiology, bed rest
aspirin-despite risk of Reyes syndrome-encephalopathy, use accepted for anti-pyretic and anti-platelet functions
poss. corticosteroids for severe cases
PCI and coronary artery bypass grafting
kawasaki disease pneumonic?
fever-5 days or more, abrupt onset, 39 or higher
extremities-desquamation-erythema and swelling
bulbar conjunctivitis-bilateral, non-purulent
rash-non-vesicular, widespread, often itchy, starts palms and soles and perineum
internal organ involvement (worry of CA aneurysms)
enanthem-strawberry tongue, mouth erythema, lip fissuring
most common cause of death in children aged between 1 month and 1 year?
sudden infant death syndrome (SIDS)
what is advocated in the 'back to sleep' campaign, which has reduced the incidence of sudden infant death syndrome in the UK?
-infants should be put to sleep on their back
-overheating by heavy wrapping and high room temperature should be avoided
-infants should be placed in the 'feet to foot' position (feet at end of bed)
-parents should not smoke near their infants
-parents should seek medical advice promptly if their infant becomes unwell
-parents should have the baby in their bedroom for the 1st 6mnths of life
-parents should avoid bringing their baby into their bed when they are tired or have taken alcohol, sedative meds or drugs
-parents should avoid sleeping with their infant on the sofa, settee or armchair.
what is sudden infant death syndrome?
sudden and unexpected death of an infant or young child for which no adequate cause is found after a thorough postmortem examination.
occurs most commonly at 2-4mnths of age
factors associated with sudden infant death syndrome?
infant: aged 1-6mnths, peak at 3 mnths
premature, low birth weight
parents: young maternal age
single unsupported mother
poor or overcrowded housing
high maternal parity
maternal smoking during pregnancy, and parental smoking after birth
environment: infant sleeps prone
infant overheated from high room temp and too many clothes and covers, part. when ill.