From: Minimally invasive cardiopulmonary bypass: does it really change the outcome?
Variable | Control group | MICPB group | P value |
---|---|---|---|
n = 1,663 | n = 1,663 | ||
Age (years) | 67.9 ± 9.5 | 67.9 ± 9.2 | NS |
Weight (kg) | 73.5 ± 12 | 73.7 ± 14 | NS |
Height (cm) | 167 ± 8.6 | 167 ± 9.8 | NS |
Ejection fraction | 0.50 ± 0.11 | 0.50 ± 0.11 | NS |
Serum creatinine level (mg/dl) | 1.31 ± 0.7 | 1.28 ± 0.8 | NS |
Serum bilirubin level (mg/dl) | 0.63 ± 0.38 | 0.61 ± 0.36 | NS |
Hematocrit (percentage) | 39.2 ± 4.6 | 39.2 ± 4.4 | NS |
Priming volume (ml) | 874 ± 190 | 771 ± 134 | 0.001 |
CPB duration (minutes) | 60.9 ± 25 | 59.8 ± 21 | NS |
Aortic cross-clamping time (minutes) | 34.4 ± 13 | 34.6 ± 13 | NS |
Lowest hematocrit on CPB (percentage) | 26.2 ± 3.9 | 27 ± 3.7 | 0.001 |
Lowest temperature on CPB (°C) | 33 ± 1.6 | 32.9 ± 1.4 | NS |
Total heparin dose (IU) | 26,733 ± 32,159 | 23,590 ± 30,421 | 0.004 |
Total protamine dose (mg) | 221 ± 58 | 162 ± 58 | 0.001 |
Distal coronary anastomoses | 3.26 ± 0.95 | 3.37 ± 0.98 | NS |
Gender male | 1,311 (78%) | 1,322 (79.5%) | NS |
Recent myocardial infarction | 96 (5.8%) | 107 (6.4%) | NS |
Unstable angina | 240 (14.4%) | 203 (12.2%) | NS |
Antiplatelet agents | 350 (21%) | 338 (20.3%) | NS |
Previous vascular surgery | 93 (5.6%) | 93 (5.6%) | NS |
Congestive heart failure | 40 (2.4%) | 38 (2.3%) | NS |
Preoperative IABP use | 10 (0.6%) | 11 (0.6%) | NS |
COPD | 145 (8.7%) | 151 (9.1%) | NS |
Cerebrovascular accident | 104 (6.2%) | 91 (5.5%) | NS |
Diabetes on medication | 312 (18.7%) | 344 (20.1%) | NS |
Chronic renal failure | 40 (2.4%) | 38 (2.3%) | NS |
Redo operation | 45 (2.7%) | 40 (2.4%) | NS |
Emergency procedure | 13 (0.8%) | 9 (0.5%) | NS |