Absolute |
The need for emergent intubation (eg, cardiac or respiratory arrest, severe respiratory distress, unstable cardiac arrhythmia) |
Relative |
Nonrespiratory organ failure that is acutely life-threatening |
Severe encephalopathy (eg, GCS <10) |
Severe upper gastrointestinal bleeding |
Hemodynamic instability |
Facial or neurological surgery, trauma, or deformity |
Significant airway obstruction (eg, laryngeal mass or tracheal tumor) |
Inability to cooperate, protect airway, or clear secretions (eg, patients at high risk or aspiration) |
Anticipated prolonged duration of mechanical ventilation (eg, ≥4 to 7 days) |
Recent esophageal or gastric anastomosis* |
Multiple contraindications |
Insufficient staffing support |
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