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Table 3 Causes of reintubation for the NIV and OM groups

From: Noninvasive ventilation immediately after extubation improves weaning outcome after acute respiratory failure: a randomized controlled trial

  Respiratory muscle fatigue Atelectasis Bronchospasm Depressed level of consciousness
90 mm Hg ≥ SAP ≥ 180 mm Hg 2 3   6  
HR ≥ 140 beats/min     
Severe arrhythmia     
RR ≥ 30 per minute 1 2 3 4 5 6  
PaO2 ≤ 60 mm Hg or SaO2 ≤ 90% 1 2 3 4 5 6 7 1a
PaCO2 ≥ 50 mm Hg 1 2 3 4 5 6 7 1a
Difficulty in expectorating 1 2 3    7 1a
  1. 1, 2, 3, 4, 5, 6, 7, Seven patients in the Oxygen Mask group undergoing reintubation. aPatient in the NIV group undergoing reintubation. HR, heart rate; NIV, noninvasive ventilation; RR, respiratory rate.