Pediatric emergency medicine trisk 1415 1415
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CBC count, blood cx, CSF
analysis, cx, mono
spot/EBV titers
Infection, allergy
Electrolytes, BUN, CR,
glucose, Ca, PO4 , Mg,
LFTs, ammonia, TFTs
Metabolic/endocrine
disease, metabolic
disturbance, disease
Altered mental status
Tetany
Bleeding/clotting
disorder, pulmonary
embolism
PT/PTT
d-dimer
Toxicologic screen blood,
urine
Nasal, ocular, rectal swab:
DFA, PCR, cx
Pulmonary embolism
Ingestion/intoxication
agitation will
worsen distress
ABG, VBG changes
occur late and may
not be seen until
arrest
(A-a) O2 gradient
increase suggests
ventilation–
perfusion mismatch
Relative
contraindication for
lumbar puncture if
agitation or
positioning will
worsen distress
Calculate anion gap
Negative d-dimer
excludes PE in
patients with low
pretest probability
for PE
Central nervous
system depressants,
neuromuscular
blockade, electron
transport chain
poisons
Bronchiolitis, Chlamydia Neonates, infants
infection, pertussis,
viral pneumonia
