Table 2. Patient characteristics before extubation.
| Characteristics | Total number | Reintubation | No reintubation | P | Odds ratio | 95% CI |
|---|---|---|---|---|---|---|
| Gender - n (%) | ||||||
| Male | 78 (46.2) | 5 (6.4%) | 73 (93.6%) | 0.028* | 3.1 | [1.09;8.94] |
| Female | 91 (53.8%) | 16 (17.6%) | 75 (82.4%) | |||
| Age - median (SD) | 45.2 (15.1) | 48.8 (3.7) | 44.7 (1.2) | 0.479 | ||
| ASA - n (%) | ||||||
| Low risk (n = 154) | 154 (91.1%) | 19 (12.3) | 135 (87.7) | 0.911 | 1.09 | [0.23;5.22] |
| High risk (n = 15) | 15 (8.9%) | 2 (13.3) | 13 (86.7) | |||
| Respiratory symptoms - n (%) | ||||||
| No (n = 150) | 150 (88.8) | 19 (12.6) | 131 (87.4) | 0.790 | 0.81 | [0.17;3.79] |
| Yes (n = 19) | 19 (11.2%) | 2 (9.5) | 17 (90.5) | |||
| Prior pulmonary disease - n (%) | ||||||
| No (n = 148) | 148 (87.6%) | 14 (9.5) | 134 (90.5) | 0.141 | 0.86 | [0.81;0.92] |
| Yes (n = 21) | 21 (12.4%) | 0 (0) | 21 (100) | |||
| Smokers - n (%) | ||||||
| No | 86 (51.5%) | 11 (12.8) | 75 (87.2) | 0.907 | 0.94 | [0.38;2.36] |
| Yes | 82 (48.5%) | 10 (12.2) | 72 (87.8) | |||
| Prior clinical disease - n (%) | ||||||
| No (n = 103) | 103 (61%) | 14 (13.6) | 89 (86.4) | 0.566 | 0.75 | [0.29;1.98] |
| Yes (n = 66) | 66 (39%) | 7 (10.6) | 59 (89.4) | |||
| Prior intracranial surgery - n (%) | ||||||
| No (n = 140) | 140 (82.8%) | 17 (12.1) | 123 (87.9) | 0.806 | 1.15 | [0.36-3.73] |
| Yes (n = 29) | 29 (17.2%) | 4 (13.8) | 25 (86.2) | |||
| LC before surgery | ||||||
| Normal | 146 (86.4%) | 128 (87.7) | 18 (12.3) | 0.923 | 1.06 | [0.29-3.95] |
| Altered | 23 (13.6%) | 20 (87) | 3 (13) | |||
| LOS before surgery in days - mean (SD) | 7.52 (9.15) | 10.22 (8.89) | 0.346 | |||
| Diagnosis | ||||||
| Tumor (n = 108) | 108 (63.9%) | 13 (12) | 95 (88) | 0.838 | 1.10 | [0.43;2.83] |
| Vascular lesion (n = 61) | 91 (36.1%) | 8 (13.1) | 53 (86.9) | |||
| Site of surgery | ||||||
| Supratentorial (n = 133) | 133 (63.9%) | 16 (12) | 117 (88) | 0.764 | 1.17 | [0.40;3.47] |
| Infratentorial (n = 36) | 36 (21.3%) | 5 (13.9) | 31 (86.1) | |||
| Duration of surgery in min - mean (SD) | 302.1 (99.7) | 322 (88.8) | 0.304 | |||
| LC at extubation - n (%) | ||||||
| Normal (n = 154) | 154 (92%) | 14 (9.1%) | 140 (90.9%) | < 0.0001* | 8.75 | [2.76;27.73] |
| Altered (n = 15) | 15 (8%) | 7 (46.7%) | 8 (53.3%) | |||
| Duration of MV before extubation - median (25th - 75th percentile) | 31.5 (13.75-124.50) | 20 (11-28) | 0.024* | |||
| Postoperative pulmonary complication before extubation - n (%) | ||||||
| No | 157 (92.9%) | 16 (76.1) | 141 (95.2) | 0.001* | 6.29 | [1.78:22.16] |
| Yes | 12 (7.1%) | 5 (23.9) | 7 (4.8) | |||
LOS = length of stay; LC = level of consciousness; MV = mechanical ventilation;. *P < 0.05; SD = standard deviation; CI = confidence interval.