. Author manuscript; available in PMC: 2021 Jan 1.

Published in final edited form as: Contemp Clin Trials. 2019 Nov 16;88:105893. doi: 10.1016/j.cct.2019.105893

Table 1:

Spontaneous breathing trial passage criteria

Variable	Failure within 2 hours
pH (arterial or capillary)	< 7.32
End tidal CO₂	↑10 mmHg from baseline
Oxygenation	FiO₂ >0.5 and SpO₂ <90% on PEEP = 5 cmH₂O
Heart rate	↑ > 40 BPM over baseline
Rapid Shallow Breathing Pattern (RSBI) (bpm/ml/kg)	≥ 12
Pressure Rate Product (PRP)	>500
Retractions	Moderate or Severe Retractions