Acute asthma

Question 1

“severe asthma attack” criteria?

Answer 1

unable to complete sentences
RR >25
HR >110
PEFR 33-50% predicted

Question 2

“life-threatening asthma attack” criteria?

Answer 2

PEFR <33% predicted
silent chest, cyanosed, feeble effort
arrhythmia, hypotension
exhaustion, confusion, coma
ABG: normal/ ↑ CO2> 4.6kPa
O2 <8kPa, or sats <92%