Skip to main content

Table 2 Outcome variables in the two groups

From: Minimally invasive cardiopulmonary bypass: does it really change the outcome?

Variable Control group MICPB group   P value
  n = 1,663 n = 1,663   
Mechanical ventilation time (hours) 20.2 ± 79 17.3 ± 38   NS
ICU stay (days) 2.9 ± 4.3 2.5 ± 3.1   0.001
Postoperative hospital stay (days) 8.4 ± 5.9 8.1 ± 6.2   NS
Peak serum creatinine level (mg/dl) 1.43 ± 0.7 1.24 ± 1   0.001
Peak serum bilirubin level (mg/dl) 1.07 ± 0.79 0.89 ± 0.71   0.001
Bleeding (ml/12 hours) 505 ± 396 458 ± 342   0.001
Variable Count (percentage) Count (percentage) RR and 95% CI P value
Early extubation 139 (8.3) 197 (11.8) 1.47 (1.17–1.85) 0.001
Early ICU discharge 307 (18.4) 556 (33.4) 2.21 (1.89–2.6) 0.001
Early hospital discharge 187 (11.2) 316 (19) 1.85 (1.52–2.25) 0.001
Homologous blood transfusions 751 (45.1) 764 (45.9) 1.03 (0.9–1.18) NS
Surgical reoperation 79 (4.7) 64 (3.8) 0.8 (0.57–1.12) NS
Myocardial infarction 58 (3.5) 47 (2.8) 0.8 (0.54–1.19) NS
Major inotropic support 177 (10.6) 170 (10) 0.95 (0.76–1.19) NS
Intra-aortic balloon pump 49 (2.9) 28 (1.7) 0.56 (0.35–0.9) 0.015
Atrial fibrillation 293 (17.6) 251 (15.1) 0.83 (0.69–0.99) 0.049
Ventricular arrhythmias 59 (3.5) 26 (1.5) 0.43 (0.27–0.69) 0.001
Cardiac arrest 19 (1.1) 3 (0.2) 0.15 (0.04–0.53) 0.001
Acute renal failure 39 (2.3) 38 (2.3) 0.97 (0.62–1.53) NS
Stroke 10 (0.6) 14 (0.8) 1.4 (0.62–3.16) NS
Peripheral thromboembolism 6 (0.4) 0 (0) - 0.014
Severe lung dysfunction 22 (1.3) 14 (0.8) 0.63 (0.32–1.24) NS
Sepsis 10 (0.6) 14 (0.8) 1.4 (0.62–3.16) NS
Hospital mortality 55 (3.3) 50 (3) 0.9 (0.61–1.33) NS
  1. CI, confidence interval; ICU, intensive care unit; MICPB, minimally invasive cardiopulmonary bypass; NS, not significant; RR, relative risk.