Table 1. Demographic characteristics of the 169 patients included in the study.
| Characteristics | Mean (SD) or n (%) |
|---|---|
| Age (years) | 45.2 (15.1) |
| Female gender | 91 (53.8%) |
| High surgical risk | 15 (8.9%) |
| Respiratory symptoms | 15 (8.9%) |
| Prior pulmonary disease | 14 (8.2%) |
| Smokers | 82 (4.5%) |
| Prior clinical disease | 66 (39%) |
| Prior intracranial surgery | 15 (8.8%) |
| Preoperative altered state of consciousness | 6 (3.5%) |
| Diagnosis | |
| Tumor | 108 (63.9%) |
| Cerebral vascular lesion | 61 (36.1%) |
| Location of tumor | |
| Supratentorial region | 133 (63.9%) |
| Infratentorial region | 36 (21.3%) |
| Duration of surgery (min) | 319.5 (90.1) |
| Altered level of consciousness at extubation | 15 (8%) |
| Duration of MV before extubation (hours) median (25th-75th percentile) | 20 (11-31) |
| ICU LOS (days), median (25th-75th percentile) | 4 (2-9) |
| Hospital LOS (days), median (25th-75th percentile) | 9 (6-22) |
| Postoperative pulmonary complication before extubation | 14 (8.2) |
| Postoperative pulmonary complication after extubation | 38 (22.4) |
MV = mechanical ventilation; ICU = intensive care unit; LOS = length of stay; SD = standard deviation.