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Table 1 Comparison of preoperative clinical variables and postoperative outcome by patients groups

From: How decisive is the number of distal arterial anastomoses in coronary bypass surgery?

  All patients
(N = 3685)
One arterial graft
(N = 969)
Two arterial grafts
(N = 1883)
Three arterial grafts
(N = 833)
P value
Age -- year 64 ± 10 66 ± 10 64 ± 10 61 ± 9 0.001
Male sex 3142 (85%) 750 (77%) 1599 (84%) 793 (95%) 0.001
Heart Failure NYHA ≥ 2 526 (14%) 293 (30)% 176 (9%) 57 (7%) 0.001
Diabetes 590 (16%) 210 (17%) 311 (16%) 69 (8%) 0.004
3-vessel disease 2657 (72%) 553 (57%) 1282 (68%) 822 (99%) 0.001
Left main lesion 620 (17%) 170 (18%) 352 (19%) 98 (12%) 0.005
LV ejection fraction % 59 ± 13 51 ± 16 60 ± 12 61 ± 12 0.001
Distal Anastomoses 3 ± 0.8 2.9 ± 0.9 2.9 ± 0.8 3.4 ± 0.6 0.001
Distal Arterial Anastomoses 2.4 ± 1 1.2 ± 0.4 2.5 ± 0.6 3.4 ± 0.6 0.001
DAA = 1 795 (22%) 795 (82%) 0 0 0.001
DAA = 2 1142 (31%) 163 (16.9%) 979 (52%) 0  
DAA = 3 1337 (36%) 9 (0.9%) 813 (43%) 515 (62%)  
DAA ≥ 4 411 (11%) 2 (0.2%) 91 (5%) 318 (38%)  
Single ITA 1208 (33%) 969 (100%) 239 (13%) 0 N/A
Both ITA 2477 (67%) 0 1644 (87%) 833 (100%) N/A
Sequential ITA 1377 (37%) 162 (17%) 895 (48%) 320 (38%) 0.001
Associated GEA 1072 (29%) 0 239 (13%) 833 (100%) N/A
Associated Vein 1572 (43%) 969 (100%) 599 (32%) 4 (5%) 0.001
Complete Revascularization 2284 (62%) 460 (47%) 1130 (60%) 694 (83%) 0.001
Clamp Time – min. 51 ± 14 44 ± 12 49 ± 14 59 ± 13 0.01
CPB time – min. 68 ± 21 66 ± 17 65 ± 17 76 ± 27 0.01
1-month Mortality 59 (1.6%) 21 (2.1%) 27 (1.4%) 11 (1.3%) 0.432
Mean Follow-up--year 13.1 ± 7.3 11.5 ± 7.4 12.9 ± 6.9 15.1 ± 7.5 0.001
Lost of follow-up at 1 year 112 (3%) 34 (3.5%) 52 (2.7%) 26 (3.1%) 0.321
  1. NYHA New York heart association, LV Left ventricular, DAA Distal arterial anastomoses, ITA Internal thoracic artery, GEA Gastro-epiploic artery, min. Minutes, CPB Cardio-pulmonary bypass, N/A Non appropriate