Definitions
The time taken to reach peak sedation was defined as the time to adequate sedation (MOAA/S = 3). The time taken to reach peak sedation was defined as the time to the start of the procedure after the administration of the first dose of medication. The duration of bronchoscopy was defined as the period from bronchoscope insertion to mouth exit. The time from the first dose to the end of the procedure was defined as the time from the first sedative drug administration to mouth exit. The time from the end of the procedure to when the patient was fully alert was defined as when MOAA/S had recovered to 5 after the procedure had been completed.