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Table 1 Patients’ baseline characteristics based on pre-operative left ventricular ejection fraction

From: Significance of preoperative left ventricular ejection fraction in 5-year outcome after isolated CABG

Ejection fraction (EF)

EF ≥ 50%

35% ≤ EF < 50%

EF < 35%

P value

Graft number

3 [3, 4]

4 [3, 4]

4 [3, 4]

 < 0.001

Age (years)

60.75 ± 9.22

60.89 ± 9.62

61.05 ± 9.73

0.255

Gender

 Female

2453 (32.6%)

2544 (24.4%)

741 (19.8%)

 < 0.001

 Male

5073 (67.4%)

7890 (75.6%)

3002 (80.2%)

 

eGFR (ml/min)

 ≥ 90

2965 (47.3%)

3963 (44.7%)

1233 (37.4%)

 < 0.001

 60–89

2412 (38.5%)

3434 (38.7%)

1300 (39.5%)

 

 < 60

891 (14.2%)

1466 (16.5%)

761 (23.1%)

 

 Hypertension

4349 (57.8%)

5483 (52.6%)

1778 (47.6%)

 < 0.001

 Diabetes mellitus

2777 (36.9%)

4023 (38.6%)

1641 (43.9%)

 < 0.001

 Dyslipidemia

4561 (60.7%)

5678 (54.5%)

1804 (48.3%)

 < 0.001

 Positive Family History

3124 (41.5%)

3921 (37.6%)

1191 (31.8%)

 < 0.001

 Opium

824 (11.2%)

1472 (14.5%)

662 (18.3%)

 < 0.001

 Current cigarette smoker

1125 15.0%

1884 18.1%

778 20.9%

 < 0.001

 LM stenosis > 50%

669 (8.9%)

820 (7.9%)

364 (9.7%)

0.001

 Pre-Surgery PCI

438 (5.8%)

731 (7.0%)

314 (8.4%)

 < 0.001

 Renal failure

128 (1.7%)

234 (2.3%)

131 (3.5%)

 < 0.001

 BMI ≥ 30 (kg/m2)

1968 (26.3%)

2459 (23.6%)

696 (18.7%)

 < 0.001

 Urgent/Emergent procedure

250 (3.3%)

405 (3.9%)

139 (3.7%)

0.139

 COPD

192 (2.6%)

306 (3.0%)

144 (3.9%)

0.001

 PVD

234 (3.2%)

229 (2.2%)

72 (2.0%)

0.124

Carotid artery stenosis

 20–50%

50 (0.7%)

55 (0.5%)

13 (0.4%)

0.144

 51–75%

29 (0.4%)

35 (0.3%)

11 (0.3%)

 

 > 75%

81 (1.1%)

93 (0.9%)

26 (0.7%)

 

 CVA

388 (5.2%)

655 (6.3%)

296 (7.9%)

 < 0.001

Pre CABG-MI Interval

 No MI

6136 (81.5%)

6522 (62.5%)

1663 (44.4%)

 < 0.001

 ≤ 7Day

365 (4.8%)

992 (9.5%)

415 (11.1%)

 

 8–21 day

184 (2.4%)

622 (6.0%)

367 (9.8%)

 

 > 21Day

841 (11.2%)

2298 (22.0%)

1298 (34.7%)

 

 Off-pump surgery

858 (11.9%)

741 (7.3%)

293 (8.0%)

 < 0.001