Table 2.
Profile of patients operated within 48 hours of an intraoperative death (cases) and matched controls
| Intraoperative deaths (n=81) | Cases (n=233) | Controls (n=932) | P value* | |
|---|---|---|---|---|
| Mean (SD) age (years) | 65 (13) | 66 (9) | 64 (11) | 0.08 |
| Proportion of men (%) | 62 | 75 | 76 | 0.50 |
| Median (IQR) bypass time (mins) | 158 (100-242) | 83 (63-109) | 77 (59-101) | 0.17 |
| Median (IQR) cross clamp time (mins) | 81 (45-133) | 46 (36-65) | 44 (34-61) | 0.15 |
| Mean (SD) height (m) | 1.69 (0.12) | 1.69 (0.10) | 1.71 (0.10) | 0.19 |
| Mean (SD) weight (kg) | 77 (15) | 77 (13) | 79 (13) | 0.21 |
| Mean (SD) blood pressure (mm Hg) | 129 (39)/71 (22) | 135 (23)/74 (13) | 134 (21)/74 (13) | 0.27 |
| Median (IQR) serum creatinine (μmol/l) | 109 (96-150) | 108 (96-123) | 106 (96-119) | 0.60 |
| Mean (SD) haemoglobin (g/l) | 120 (25) | 130 (15) | 130 (15) | 0.37 |
| Median (IQR) EuroSCORE | 8 (5-11) | 4 (2-6) | 4 (2-6) | 0.26 |
| Median (IQR) Parsonnet | 22 (10-38) | 8 (3-16) | 8 (3-15) | 0.21 |
IQR=interquartile range.
*
P values refer to cases v controls.