Setting: Diagnostic flexible bronchoscopy performed in hospitalised and ambulatory patients in a tertiary care academic hospital in Monterrey, Mexico.
Objective: To determine the effect of the route of insertion of the bronchoscope (oral or nasal) on patient comfort, vocal cord visualisation, local anaesthetic and sedation requirements and possible complications.
Design: Prospective study carried out in patients aged ⩾ 18 years with an indication for flexible bronchoscopy. The route of insertion was randomly assigned. Symptoms related to the procedure were evaluated using a questionnaire.
Results: Sixty-three patients were included: 32 in the oral insertion group and 31 in the nasal insertion group. There was no statistically significant difference in patient discomfort (1.91 ± 2.95 vs. 2.39 ± 3.56 points on a scale of 1 to 10, P = 0.74) or procedural complications (4 vs. 0 events, P = 0.12) between study groups. Oral insertion was associated with less time to vocal cord visualisation (25.5 ± 156 s vs. 56 ± 61 s, P < 0.01), lower requirement for lidocaine (15 ± 7.50 vs. 16 ± 4 ml, P = 0.01) and fewer insertion failures (0 vs. 6 cases, P < 0.01).
Conclusions: With intravenous sedoanalgesia, route of insertion did not affect patient comfort. However, the oral route was associated with faster vocal cord visualisation, less use of lidocaine and no insertion failure.