Outcome Measures The primary outcome will be the incidence of complications after FB. Complications will define as hypoxemia (SpO2 <90% and need of supplemental oxygen within 30 min of a completed procedure), hypotension (mean arterial pressure <60 mm Hg or systolic blood pressure <90 mm Hg for more than 5 min and/or need for administration of intravenous solution or vasopressors), cardiac dysrhythmias (new onset of arrhythmia or worsening of underlying arrhythmia that caused hemodynamic instability and/or required urgent intervention), bleeding, and death.