Table 2.
Demographics and baseline characteristics of studied patients
| All patients | Influenza | COVID‐19 | ||
|---|---|---|---|---|
| Number of patients | n = 45 | n = 17 | n = 28 | p Value |
| Characteristics | ||||
| Age (years) | 51.9 ± 11.2 | 49.5 ± 13.2 | 53.3 ± 9.8 | .314 |
| Male | 28 (62%) | 9 (53%) | 19 (68%) | .317 |
| Body surface area (cm2) | 2.11 ± 0.27 | 2.24 ± 0.27 | 2.04 ± 0.35 | .036 |
| Body mass index | 34.95 ± 7.82 | 37.58 ± 9.06 | 33.36 ± 6.63 | .107 |
| Underlying conditions | ||||
| Pre‐ECMO positive blood culture | 10 (22%) | 4 (24%) | 6 (0%) | .869 |
| Smoking | 10 (22%) | 5 (29%) | 5 (18%) | .366 |
| Coronary artery disease | 3 (7%) | 3 (18%) | 0 (0%) | .021 |
| Chronic lung disease | 5 (11%) | 3 (18%) | 2 (7%) | .277 |
| Diabetes | 13 (29%) | 5 (29%) | 8 (29%) | .952 |
| Pre‐ECMO acute renal injury | 18 (40%) | 10 (59%) | 8 (29%) | .045 |
| Pre‐ECMO immunotherapy | 28 (62%) | 2 (12%) | 26 (93%) | <.001 |
| Pre‐ECMO vital signs | ||||
| Temperature (°F) | 99.7 ± 1.8 | 100.1 ± 2.0 | 99.04 ± 1.6 | .074 |
| Heart rate | 107.2 ± 25.5 | 115.8 ± 26.5 | 102.0 ± 23.9 | .089 |
| Respiratory rate | 27.4 ± 4.7 | 26.9 ± 4.6 | 27.7 ± 4.8 | .581 |
| Mean arterial pressure (mm Hg) | 82.3 ± 15.7 | 78.1 ± 12.8 | 84.9 ± 15.1 | .115 |
| FiO2 (%) | 95.3 ± 13.1 | 96.6 ± 14.6 | 94.6 ± 12.3 | .640 |
| PEEP (cm) | 15.2 ± 5.4 | 15.6 ± 6.8 | 15.0 ± 4.6 | .750 |
| Other | ||||
| Transfer from outside hospital | 29 (64%) | 11 (65%) | 18 (64%) | .977 |
| ECMO initiated other than our hospital | 16 (36%) | 2 (12%) | 14 (50%) | .009 |
| Use of Avalon cannula | 15 (38%) | 15 (88%) | 2 (7%) | <.001 |
Note: Data are expressed with a number (percentage) or mean ± SD.
Abbreviations: COVID‐19, coronavirus disease 2019; ECMO, extracorporeal membrane oxygenation.