Research Article
A Single-Center Experience in Low Ejection Fraction Coronary Artery Bypass Surgery
Table 1
Baseline characteristics, demographics, and risk factors.
| | Characteristics | Unmatched | Stabilized IPTW-matched | | ONCAB (n = 58) | OPCAB (n = 138) | value | ONCAB (Nw = 54) | OPCAB (Nw = 137) | value |
| | Age (mean ± SD) (years) | 63.3 ± 10.7 | 62.8 ± 11.8 | 0.393 | 62.4 ± 10.7 | 62.7 ± 11.4 | 0.873 | | BMI | 29.6 ± 5.3 | 28.7 ± 6.2 | 0.369 | 29.5 ± 5.1 | 29.7 ± 7.6 | 0.789 | | Male sex | 44 (75.9) | 115 (83.3) | 0.222 | 45 (83.8) | 113 (82.5) | 0.835 | | Hispanic | 11 (19) | 21 (15.2) | 0.517 | 12 (21.4) | 20 (14.8) | 0.268 | | Previous MI (at any time prior surgery) | 51 (87.9) | 104 (75.4) | 0.048 | 44 (81.5) | 109 (79.4) | 0.739 | | Angina | 21 (36.2) | 54 (39.1) | 0.704 | 17 (31.5) | 50 (36.5) | 0.395 | | STEMI | 6 (10.3) | 19 (13.8) | 0.509 | 5 (9.3) | 21 (15.6) | 0.147 | | NON-STEMI | 21 (36.2) | 47 (34.1) | 0.771 | 18 (32.8) | 49 (35.8) | 0.522 | | Arrhythmia | 6 (10.3) | 26 (18.8) | 0.142 | 7 (13.2) | 22 (16.2) | 0.604 | | Hypertension | 55 (94.8) | 115 (83.3) | 0.030 | 49 (91.2) | 120 (87.4) | 0.458 | | Dialysis | 5 (8.6) | 13 (9.4) | 0.860 | 6 (10.8) | 13 (9.3) | 0.753 | | CVA (previous history of stroke) | 9 (15.5) | 23 (16.7) | 0.943 | 13 (23.7) | 22 (16.4) | 0.238 | | Chronic lung disease | 25 (43.1) | 43 (31.2) | 0.109 | 20 (36.2) | 50 (36.3) | 0.994 | | PVD (history of PAD) | 15 (25.9) | 29 (21) | 0.458 | 14 (25.7) | 28 (20.5) | 0.433 | | Sleep apnea | 10 (17.2) | 28 (20.3) | 0.622 | 10 (18.7) | 30 (21.9) | 0.623 | | History of heart failure | Systolic | 17 (29.3) | 43 (31.2) | 0.794 | 16 (34.3) | 41 (35.6) | 0.968 | | Diastolic | 1 (1.7) | 4 (2.9) | 1 | 1 (1.4) | 5 (4) | 0.176 | | Both | 25 (43.1) | 69 (50) | 0.378 | 27 (58.1) | 67 (57.5) | 0.610 | | Unknown | 4 (6.9) | 4 (2.9) | 0.197 | 3 (6.1) | 3 (2.95) | 0.150 | | Liver disease | 2 (3.4) | 10 (7.2) | 0.515 | 4 (7.2) | 9 (6.3) | 0.821 | | Diabetes | 35 (60.3) | 91 (65.9) | 0.455 | 37 (69.1) | 90 (65.9) | 0.673 | | Hemoglobin (mean ± SD) | 12.5 ± 2.1 | 12.8 ± 2.1 | 0.377 | 12.8 ± 2.1 | 12.6 ± 2 | 0.688 | | EF (mean ± SD) | 28.7 ± 5.1 | 26.4 ± 6.1 | 0.015 | 27.6 ± 5.3 | 27.2 ± 6.1 | 0.645 | | Creatine (mean ± SD) | 1.4 ± 1.04 | 1.5 ± 1.1 | 0.609 | 1.5 ± 1.3 | 1.44 ± 1.1 | 0.737 | | Single vessel Dis | 1 (1.7) | 6 (4.3) | 0.676 | 1 (1.4) | 3 (2.5) | 0.573 | | Double vessel Dis | 6 (10.3) | 25 (18.1) | 0.174 | 7 (12.4) | 21 (15.5) | 0.429 | | Triple vessel Dis | 50 (86.2) | 106 (76.8) | 0.136 | 46 (85) | 111 (81.2) | 0.276 | | Cardiogenic shock | 5 (8.62) | 11 (10.23) | 0.881 | 5 (9.3) | 11 (8.1) | 0.849 |
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