Table 2.
Comparison of intraoperative variables for patients with and without delirium
| Variable | Delirious (n = 23) | Nondelirious (n = 40) | Total Cohort (n = 63) |
|---|---|---|---|
| Intraoperative hemodynamics, mean (SD) | |||
| Mean arterial pressure (MAP), mm Hg | 73.7 (8.7) | 75.9 (7.5) | 75.1 (8.0) |
| Minimum MAP, mm Hg | 28.7 (11.2) | 33.0 (8.5) | 31.4 (9.7) |
| Maximum MAP*, mm Hg | 146.0 (34.6) | 151.7 (31.6) | 149.6 (32.6) |
| Central venous pressure (CVP), mm Hg | 13.1 (6.6) | 11.7 (3.7) | 12.3 (5.0) |
| Minimum CVP, mm Hg | 1.4 (2.9) | 0.9 (1.7) | 1.1 (2.2) |
| Maximum CVP*, mm Hg | 37.0 (16.2) | 30.3 (14.1) | 32.7 (15.2) |
| Cerebral perfusion pressure (CPP), mm Hg | 60.5 (11.4) | 64.2 (8.4) | 62.8 (9.7) |
| Minimum CPP*, mm Hg | 8.8 (17.2) | 16.0 (14.7) | 13.4 (15.9) |
| Maximum CPP, mm Hg | 133.5 (35.0) | 143.2 (32.1) | 139.7 (33.2) |
| Duration with CPP <50 mm Hg*, h | 2.1 (1.6) | 1.4 (1.3) | 1.7 (1.6) |
| Other surgical characteristics | |||
| Bilateral transplant, n (%) | 20 (87%) | 31 (78%) | 63 (81%) |
| ECMO during hospitalization, n (%) | 4 (17%) | 6 (15%) | 10 (16%) |
| Preoperative | 1 (4%) | 3 (8%) | 4 (%) |
| Intraoperative* | 3 (13%) | 1 (3%) | 4 (%) |
| Postoperative | 2 (9%) | 3 (8%) | 5 (%) |
| Cardiopulmonary bypass, n (%) | 3 (13%) | 4 (17%) | 7 (11%) |
| Surgery duration, mean (SD), h | 9.2 (2.3) | 8.6 (2.4) | 8.9 (2.4) |
| Postoperative mechanical ventilation, h, median (IQR) | 45.5 (242) | 41.7 (210) | 43.3 (221) |
| Intensive care unit stay†, mean (SD) d | 13.3 (15.5) | 5.1 (7.6) | 8.2 (11.9) |
| Primary graft dysfunction grade†, n (%) | |||
| 0/1 | 10 (44%) | 27 (68%) | 37 (59%) |
| 2 | 7 (30%) | 11 (28%) | 18 (29%) |
| 3 | 6 (26%) | 2 (5%) | 8 (13%) |
Definition of abbreviations: ECMO = extracorporeal membrane oxygenation; IQR = interquartile range.
Comparisons between delirious and nondelirious groups are unadjusted.
*
Delirious and nondelirious groups differ at P ≤ 0.10.
†
Delirious and nondelirious groups differ at P ≤ 0.05.