Table 1: Comparison of preoperative clinical variables and postoperative outcomes by groups of patients receiving bilateral internal thoracic artery.
|
Unmatched groups Sequential ITA |
Matched groups Sequential ITA |
||||||
|
No |
Yes |
|
|
No |
Yes |
|
|
Variable |
N = 820 |
N = 824 |
SMD |
P value |
N = 334 |
N = 334 |
SMD |
P value |
Propensity score |
0.35 ± 0.23 |
0.65 ± 0.21 |
-1.391 |
< 0.001 |
0.55 ± 0.21 |
0.55 ± 0.21 |
-0.004 |
0.996 |
Age-year |
64 ± 9 |
64 ± 9 |
0.003 |
0.939 |
64 ± 10 |
64 ± 9 |
-0.032 |
0.682 |
Male gender |
655 (80%) |
706 (86%) |
-0.132 |
0.005 |
285 (85%) |
275 (82%) |
0.081 |
0.293 |
Heart failure NYHA ≥ 2 |
85 (10%) |
91 (11%) |
-0.032 |
0.783 |
40 (12%) |
40 (12%) |
0 |
1 |
3-vessel disease |
595 (73%) |
606 (74%) |
-0.023 |
0.653 |
245 (73%) |
239 (72%) |
0.022 |
0.603 |
Left main lesion |
181 (22%) |
165 (20%) |
0.049 |
0.308 |
74 (22%) |
74 (22%) |
0 |
1 |
LV ejection fraction-% |
59 ± 12 |
61 ± 12 |
-0.102 |
0.042 |
60 ± 12 |
60 ± 12 |
-0.028 |
0.722 |
Diabetes |
88 (11%) |
124 (15%) |
-0.119 |
0.009 |
45 (13%) |
47 (14%) |
-0.029 |
0.822 |
Associated RCA vein graft |
338 (41%) |
261 (32%) |
0.182 |
< 0.001 |
133 (40%) |
120 (36%) |
0.083 |
0.109 |
Distal Anastomoses |
2.8 ± 0.6 |
3.4 ± 0.6 |
-1.632 |
< 0.001 |
2.5 ± 0.6 |
3.4 ± 0.5 |
-1.521 |
< 0.001 |
Arterial Anastomoses |
2 ± 0 |
3.1 ± 0.4 |
-3.872 |
< 0.001 |
2 ± 0 |
3.1 ± 0.3 |
-3.93 |
< 0.001 |
Complete Revascularization |
472 (58%) |
485 (59%) |
-0.02 |
0.594 |
207 (62%) |
196 (59%) |
0.061 |
0.384 |
Clamp Time-min. |
44 ± 12 |
55 ± 12 |
-0.913 |
< 0.001 |
52 ± 12 |
51 ± 11 |
0.062 |
0.42 |
CPB time-min. |
61 ± 17 |
70 ± 16 |
-0.584 |
< 0.001 |
69 ± 16 |
67 ± 15 |
0.087 |
0.257 |
1-month Mortality |
14 (1.7%) |
6 (0.7%) |
0.092 |
0.07 |
8 (2.4%) |
3 (0.9%) |
0.118 |
0.135 |
Mean Follow-up-year |
12.5 ± 6.8 |
12.4 ± 6.6 |
0.014 |
0.837 |
11.9 ± 6 |
12.4 ± 6 |
-0.083 |
0.09 |
ITA: Internal Thoracic Artery; SMD: Standardized Mean Difference; NYHA: New York Heart Association; LV: Left Ventricular; Min: Minutes; RCA: Right Coronary Artery; CPB: Cardiopulmonary Bypass