Research Article

Analysis of Myocardial Ischemia Parameters after Coronary Artery Bypass Grafting with Minimal Extracorporeal Circulation and a Novel Microplegia versus Off-Pump Coronary Artery Bypass Grafting

Table 3

Postoperative data.

Before IPTWAfter IPTW
OPCAB ()Microplegia ()Diff.OPCAB ()Microplegia ()Diff.

Operative mortality, (%)6 (3.4)0 (0.0)0.2660.0334 (2.5)0 (0.0)0.2280.130
MACCE, (%)14 (8.0)6 (4.1)0.1660.15012 (7.8)6 (5.0)0.1130.507
Postoperative MI, (%)4 (2.3)1 (0.7)0.1340.2725 (3.0)0 (0.0)0.2490.130
Postoperative stroke, (%)5 (2.9)5 (3.4)-0.0300.7885 (3.2)6 (5.0)-0.0890.568
Pulmonary infection, (%)12 (6.9)5 (3.4)0.1580.17111 (6.9)4 (3.3)0.1680.193
Postoperative renal failure, (%)15 (8.6)5 (3.4)0.2200.06213 (8.6)3 (2.7)0.2550.077
AF at discharge, (%)34 (19.4)35 (23.6)-0.1030.35725 (16.5)27 (21.9)-0.1360.281
Reoperation for bleeding, (%)3 (1.7)5 (3.4)-0.1060.3473 (1.7)7 (5.8)-0.2180.157
, (%)2 (1.1)0 (0.0)0.1520.5022 (1.1)0 (0.0)0.1490.503
Length of ICU stay in days, geometric mean (CI)1.7 (1.5-1.9)1.3 (1.2-1.4)0.4230.0031.6 (1.5-1.8)1.3 (1.2-1.4)0.4190.014
Length of stay in days, geometric mean (CI)8.5 (7.9-9.2)8.7 (8.3-9.2)0.6580.3998.7 (8.0-9.4)8.8 (8.3-9.4)0.6460.395

Data are presented as geometric mean and standard deviation back-transformed from the log scale or as numbers (%). Diff.: standardized differences; OPCAB: off-pump coronary artery bypass grafting; MACCE: major adverse cardiac and cerebrovascular events; ICU: intensive care unit; MI: myocardial infarction; IPTW: inverse probability of treatment weighting.