Table 1.
Patients‘data
| Low risk (n = 23) | Moderate to high risk (n = 23) | P value | |
|---|---|---|---|
| Demographics | |||
| Age (yrs.) | 67.8 (60–84) | 68.4 (60.7–76.8) | 0.885 |
| Sex (female/male) | 12/11 | 5/18 | 0.065 |
| Body mass index (BMI) (kg m−2) | 25.7 (19.4–32.6) | 29.4 (23.4–38.1) | 0.002* |
| ASA classification (I/II/III) | 4/18/1 | 0/18/5 | 0.022* |
| STOP-BANG score | 2 (1–2) | 4 (3–6) | < 0.001* |
| Comorbidities | |||
| History of smoking (no/yes/past) | 16/6/1 | 14/2/7 | 0.041* |
| Arterial hypertension | 6 | 15 | 0.017* |
| Diabetes mellitus (DM) | 1 | 5 | 0.187 |
| Surgery | |||
| Otorhinolaryngologic surgery | 19 | 21 | n.s. |
| Other type of Surgery | 4 | 2 | n.s. |
| Surgery type details | |||
| Skin surgery | 2 | 1 | 1.000 |
| Thyroid gland surgery | 2 | 0 | 0.489 |
| Ear surgery | 8 | 5 | 0.514 |
| Nasal and paranasal sinus surgery | 4 | 10 | 0.108 |
| Salivary gland surgery | 7 | 6 | 1.000 |
| Midfacial fracture surgery | 0 | 1 | 1.000 |
| Operation data | |||
| Duration of anaesthesia (h) | 1.9 (1.1–4.2) | 1.8 (1.1–4.3) | 0.667 |
| Extubation to 2nd testing time (h) | 27.0 (5.9–50.1) | 26.4 (19.4–47.5) | 0.657 |
| SpO2 before procedure (%) | 97 (91–100) | 97 (89–100) | 0.729 |
| SpO2 at before transfer to intermediate care (%) | 99 (87–100) | 98 (92–100) | 0.819 |
| SpO2 at arrival intermediate care (%) | 95 (86–100) | 92 (88–96) | 0.073 |
| SpO2 lowest level (%) | 93 (85–98) | 91 (81–96) | 0.141 |
| Postoperative testing day | |||
| First postoperative day | 1 | 22 | n.s. |
| Second postoperative day | 0 | 23 | n.s. |
Data are reported as number or as median (range). SpO2 is the oxygen saturation measured by pulse oximetry. P value is the significance level of the difference between the two groups. (n.s. not significant)