Table 1.
Demographic characteristics and weaning profiles of the participants.
| Characteristic | All (n = 233) | Success (n = 205) | Failure (n = 28) | p | |||
|---|---|---|---|---|---|---|---|
| Age, years | 73.0 | (61.8–81.3) | 73.0 | (61.0–82.0) | 72.5 | (64.5–80.5) | 0.980 |
| Gender (%) | |||||||
| Male | 147 | (63.1) | 132 | (64.4) | 15 | (53.6) | 0.267 |
| Female | 86 | (36.9) | 73 | (35.6) | 13 | (46.4) | |
| APACHE II score | 21.0 | (16.0–26.0) | 21.0 | (16.0–26.0) | 20.0 | (16.0–25.5) | 0.982 |
| Hospital stay, days | 15.2 | (10.1–22.3) | 14.7 | (9.7–21.7) | 18.3 | (14.3–25.4) | 0.006 |
| Mechanical ventilation duration, days | 3.8 | (2.3–7.1) | 3.8 | (2.2–7.4) | 5.4 | (3.0–7.0) | 0.311 |
| Reasons for intubation (%) | |||||||
| Pneumonia | 106 | (45.5) | 94 | (45.9) | 12 | (42.9) | 0.369 |
| ICH | 28 | (12.0) | 24 | (11.7) | 4 | (14.3) | |
| Post surgery | 25 | (10.7) | 23 | (11.2) | 2 | (7.1) | |
| AMI | 19 | (8.2) | 18 | (8.8) | 1 | (3.6) | |
| Septic shock | 19 | (8.2) | 18 | (8.8) | 1 | (3.6) | |
| Medical emergency | 19 | (8.2) | 16 | (7.8) | 23 | (10.7) | |
| Stroke | 9 | (3.9) | 6 | (2.9) | 3 | (10.7) | |
| Others | 8 | (3.4) | 6 | (2.9) | 3 | (7.1) | |
| Weaning profiles | |||||||
| Pimax | 24.0 | (−32.0–40.0) | 24.0 | (−32.0–40.0) | −6.0 | (−40.0–40.0) | 0.281 |
| Pemax | 44.0 | (32.0–60.0) | 45.0 | (34.0–60.0) | 41.0 | (24.0–60.0) | 0.353 |
| RSBI_average | 56.2 | (37.9–79.3) | 57.4 | (37.4–86.4) | 50.0 | (41.4–69.0) | 0.543 |
| RSBI_pass (%) | 200 | (85.8) | 173 | (84.4) | 27 | (96.4) | 0.087 |
| Cuff leak test_average | 346 | (160–500) | 350 | (162–500) | 265 | (139–476) | 0.574 |
| Cuff leak test_pass (%) | 198 | (85.0) | 175 | (85.4) | 23 | (82.1) | 0.655 |
AMI, acute myocardial infarction; APACHE II score, acute physiology and chronic health evaluation II score; ICH, intracerebral hemorrhage; Pemax, maximal expiratory pressure; Pimax, maximal inspiratory pressure; RSBI, rapid shallow breathing index.