Requirement of mechanical ventilation

RR 95% CI

Parameter

7.07 - 37.46

11.57

Pseudo cholinesterase < 1800 IU/L

2.57 - 7.49

4.37

SpO₂ < 85%

2.14 - 6.59

4.78

GCS ≤ 12

3.04 - 49.25

13.95

Time lag after exposure on admission ≥ 2 h