30 December, 2010 by: colinparker

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You hear a barking cough, around midnight, and think: easy! But could it be one of the croup mimics? Croup is a potentially life-threatening upper airway obstruction that has a highly successful and satisfying treatment.

To listen to this PEMcast, click on the triangular play button below, or you can subscribe via your favourite podcatching software…

Outline of this Croup podcast

[CP] Epidemiology, Aetiology, Clinical manifestations & natural history
PIV 1,2,3  RSV  Rhinovirus  Enterovirus

[SF] Differentials of upper airway obstruction

[GG] ‘spasmodic’ croup (?does it exist)

[CP] Treatment = oral steroids, cuddle therapy

Pouseiulle-Hagen formula (gas flow in tubes):
R = 8ηL / π r 4

Turbulent flow (Reynolds’ number):
Re = density.Diameter.Velocity / viscosity

[CP] Treatments which don’t work: mist (Lavine 2001):

[GG] Unkind treatments: Inhaled /nebulised steroid (budesonide), IM/IV dex

[CP] Adrenaline for severe croup:
Duration of action (120min) Westley 1978
Dosing regimes (1% solution vs 1:1000 L-epinephrine) & confusion
HealthEngine article: Croup Guidance for Doctors

[CP] Borland 2008 – PREDICT current practice in Australasia

[All] Summary, goodbye, Happy New Year!

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