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Combined sedation with a benzodiazepine and an opiate has been proposed as standard sedation for bronchoscopy. Propofol is a sedative-hypnotic with a rapid onset of action and fast recovery time, but carries the potential risk of respiratory failure. Consecutive patients (n = 200) were randomly allocated to receive either the combination midazolam and hydrocodone or intravenous propofol. The primary end-points were the mean lowest arterial oxygen saturation during bronchoscopy and the readiness-for-discharge score 1 h after the procedure. The mean lowest arterial oxygen saturation during bronchoscopy did not differ across treatment groups (p = 0.422), and the number of patients recording an arterial oxygen saturation of &lt; or =90% on at least one occasion was similar in both groups (p = 0.273). The median (interquartile range) readiness-for-discharge score 1 h after the procedure was significantly higher in the propofol group than in the combined sedation group (8 (6-9) versus 7 (5-9); p = 0.035). Patients assigned propofol exhibited less tachycardia during bronchoscopy and for &gt; or =1 h after the examination. Minor procedural complications were noted in 71 (35.5%) patients and exhibited a similar incidence in both treatment arms (p = 0.460). Propofol is as effective and safe as combined sedation in patients undergoing flexible bronchoscopy, thus representing an appealing option if timely discharge is a priority.

Propofol versus combined sedation in flexible bronchoscopy: a randomised non-inferiority trial