Paeds Flashcards
what are 3 characteristic signs of pneumonia on examination?
bronchial breath sounds
focal coarse crackles
dullness to percussion
what is the most common cause of pneumonia in children?
streptococcus pneumonia
what is the most common viral cause of pneumonia?
respiratory syncytial virus (RSV)
what is the typical x-ray finding in s. aureus pneumonia?
pneumatocoeles (round air filled cavities) and multilobe consolidation
what are 2 bacteria that are more likely to cause pneumonia in pre/un-vacinated children?
GBS
Haemophilus influenza
which bacterial pneumonia can cause extrapulmonary manifestations and what are they?
Mycoplasma pneumonia
Can cause erythema multiforme
what is the management of pneumonia?
1st - amoxicillin
+/- macrolide (erythro, clarithro, azithro) for atypicals or allergy
what is the name of the condition where people cannot convert IgM to IgG so cannot form long term immunity?
immunoglobulin class-switch recombination deficiency
VACCINES DONT WORK!
what age group is typically affected by croup?
6 months - 2years
what is the pathophysiology of croup?
upper resp tract Ix causing oedema of the larynx
what is the most common pathogenic cause of croup?
parainfluenza virus
what are 2 key features of croup caused by parainfluenza virus?
improves in <48 hours
responds well to dexamethasone
what are 3 other common pathogenic causes of croup
influenza
adenovirus
RSV
what is a possible cause of croup especially in pre/unvaxinated children?
diphtheria - leads to epiglottitis!!! high mortality!
what are 5 symptoms of croup?
increased work of breathing
barking cough in clusters
hoarse voice
stridor
low grade fever
what is the treatment for croup?
supportive
oral dexamethasone - single dose 150 mcg/Kg (can repeat at 12 hours)
what is the stepwise management of severe croup?
oral dexamethasone
O2
Neb budesonide
Neb adrenaline
Intubation and ventilation
what can be seen on x-ray in croup?
Steeple sign - tracheal narrowing
what age is virally induced wheeze typical in?
<3 years
what is the pathophysiology of viral induced wheeze?
viral infection causes inflammation and oedema which reduces space for air flow in a greater proportion due to small size of child’s airways- Poiseuilles law
what is the management of viral induced wheeze?
same as acute asthma
what kind of wheeze is heard in asthma and viral wheeze?
polyphonic expiratory wheeze throughout
what is moderate asthma?
peak flow >50% predicted
normal speech
otherwise well
what is severe asthma? (6)
peak flow 33-50% predicted
sats <92% (different to adults)
unable to complete sentences/feed
Use of accessory muscles
RR >40 1-5years, >30 5+ years
HR >140 1-5 years, >125 5+ years