Table 1.
Baseline Characteristics of Patients Being Treated with ECMO according to Time of ECMO Initiation after Establishment of Invasive or Noninvasive Ventilation
| Initiation of ECMO Therapy according to Time Point after Initiation of Noninvasive or Invasive Mechanical Ventilation |
|||||
|---|---|---|---|---|---|
| Variable | All Patients | Days 0–3 | Days 4–7 | Days 8–12 | >12 Days |
| Patients, n | 768 | 223 | 166 | 180 | 199 |
| Age, mean (SD), yr | 57.7 (11.4) | 54.5 (13.4) | 57.7 (10.8) | 59.5 (10.5) | 59.8 (9.6) |
| Sex, M, n (%) | 601 (78.3) | 164 (73.5) | 123 (74.1) | 141 (78.3) | 173 (86.9) |
| Length of hospital stay, mean (SD), d | 44.0 (38.7) | 39.7 (36.1) | 37.0 (27.9) | 39.9 (32.9) | 58.4 (49.4) |
| Ventilation, mean (SD), d | 30.9 (23.7) | 23.1 (19.2) | 27.5 (19.6) | 29.1 (19.3) | 44.1 (29.2) |
| Tracheostomy, n (%) | 466 (60.7) | 117 (52.5) | 89 (53.6) | 115 (63.9) | 145 (72.9) |
| Dialysis, n (%) | 462 (60.2) | 123 (55.2) | 108 (65.1) | 103 (57.2) | 128 (64.3) |
| In-hospital mortality, n (%) | 564 (73.4) | 133 (59.6) | 126 (75.9) | 153 (85.0) | 152 (76.4) |
| Charlson comorbidity index, n (%) | |||||
| 0 | 148 (19.3) | 42 (18.8) | 30 (18.1) | 36 (20.0) | 40 (20.1) |
| 1 | 219 (28.5) | 68 (30.5) | 37 (22.3) | 53 (29.4) | 61 (30.7) |
| 2 | 162 (21.1) | 44 (19.7) | 40 (24.1) | 40 (22.2) | 38 (19.1) |
| 3–4 | 166 (21.6) | 48 (21.5) | 41 (24.7) | 37 (20.6) | 40 (20.1) |
| ⩾5 | 73 (9.5) | 21 (9.4) | 18 (10.8) | 14 (7.8) | 20 (10.1) |
Definition of abbreviation: ECMO = extracorporeal membrane oxygenation.