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Asthma (life threatening)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Patients with severe or life threatening attacks may not be distressed and may not have all the listed features.

Features of life threatening asthma are:

  • PEF < 33% of predicted or best
  • silent chest
  • cyanosis
  • feeble respiratory effort
  • bradycardia
  • hypotension
  • exhaustion
  • confusion
  • coma

ref:Thorax1993;48 Supplement S1-S24

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