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 2
Intraoperative data.
Before IPTW
After IPTW
OPCAB ()
Microplegia ()
Diff.
OPCAB ()
Microplegia ()
Diff.
Number of distal anastomoses, m (SD)
3.2 (1.2)
3.8 (0.9)
0.613
0.000
3.3 (1.1)
3.7 (1.1)
0.370
0.002
Duration of operation in minutes, m (SD)
191.6 (42.9)
222.9 (50.2)
0.670
0.000
194.3 (42.7)
217.0 (63.4)
0.420
0.001
Three vessel coronary artery disease, (%)
132 (75.4)
137 (92.6)
-0.481
0.000
132 (86.0)
105 (84.0)
0.057
0.696
Presence of main stem stenosis, (%)
21 (12.0)
42 (28.4)
-0.417
0.000
19 (12.6)
37 (29.9)
-0.434
0.001
Total arterial revascularization, (%)
45 (25.7)
34 (23.0)
0.064
0.568
34 (22.0)
30 (23.8)
-0.044
0.740
LIMA, (%)
164 (93.7)
146 (98.6)
-0.260
0.041
145 (94.6)
123 (98.2)
-0.194
0.295
RIMA, (%)
40 (22.9)
26 (17.6)
0.132
0.241
37 (24.4)
22 (17.8)
0.163
0.223
BIMA, (%)
38 (21.7)
26 (17.6)
0.105
0.352
36 (23.4)
22 (17.8)
0.139
0.295
Use of the radial artery, (%)
15 (8.6)
43 (29.1)
-0.543
0.000
15 (9.9)
33 (26.7)
-0.444
0.001
IV inotropes at end of operation, (%)
32 (18.4)
27 (18.5)
-0.003
0.981
28 (18.1)
29 (23.0)
-0.121
0.383
Data are presented as mean and standard deviation or as numbers (%). Diff.: standardized differences; OPCAB: off-pump coronary artery bypass grafting; LIMA: left internal mammary artery; RIMA: right internal mammary artery; BIMA: both internal mammary arteries; IV: intravenous; IPTW: inverse probability of treatment weighting.
