Table 1.
Patient characteristics
| Characteristic | NCO group (n = 135) | SJOV group (n = 137) |
| Age, years | 53.4 ± 13.6 | 51.7 ± 13.8 |
| Male sex | 104 (77.0) | 106 (77.3) |
| Height, cm | 165.8 ± 7.0 | 165.7 ± 7.6 |
| Weight, kg | 57.9 ± 9.5 | 58.3 ± 10.3 |
| BMI, kg m−2 | 21.0 ± 2.8 | 21.1 ± 3.1 |
| ASA physical status, 1/2/3 | 29/84/22 | 34/89/14 |
| Mallampati class, 1/2/3/4 | 86/41/6/2 | 80/42/10/5 |
| Baseline SpO2, % | 96.0 ± 1.9 | 96.5 ± 1.6 |
| SpO2 before sedation, % | 99.9 ± 0.30 | 99.9 ± 0.25 |
| Comorbidities | ||
| Hypertension | 41 (30.3) | 46 (33.6) |
| Ischaemic heart disease | 27 (20.0) | 30 (21.9) |
| COPD | 31 (23.0) | 27 (19.7) |
| Asthma | 2 (1.5) | 2 (1.5) |
| Lung malignancy | 36 (26.7) | 39 (28.5) |
| Two or more comorbidities | 28 (20.7) | 27 (19.7) |
| Procedures | ||
| Inspection only | 59 (43.7) | 61 (44.5) |
| Inspection + BAL | 18 (13.3) | 15 (10.9) |
| Inspection + BW | 11 (8.1) | 15 (10.9) |
| Inspection + BB | 47 (34.8) | 46 (33.6) |
Values are mean ± SD or number (%).
ASA, American Society of Anesthesiologists; BAL, broncho-alveolar lavage; BB, bronchial biopsy; BMI, body mass index; BW, bronchial washing; COPD, chronic obstructive pulmonary disease; NCO group, nasal cannula supplemental oxygen group; SJOV group, supraglottic jet oxygenation and ventilation group; SpO2, peripheral oxygen saturation.