Table 1. Baseline patient characteristics, preoperative data.
| Characteristic | Total (n = 393) |
Prophylactic IABP (n = 85) | No prophylactic IABP (n = 308) | p-value (prophylactic IABP vs. non-prophylactic) |
|---|---|---|---|---|
| Age, y | 0.252 | |||
| Mean ± SD | 69 ±10 | 70 ± 10 | 68 ± 9 | |
| Median (IQR) | 70 [63, 75.5] | 69 [63, 78] | 70 [63, 75] | |
| Male, % | 86.1 | 87.1 | 85.7 | 0.861 |
| Height, cm | 0.621 | |||
| Mean ± SD | 161.2 ± 8.6 | 162.1 ± 8.6 | 161.6 ± 8.4 | |
| Median (IQR) | 162.00 [156.20, 167.00] | 163.00 [157.38, 167.13] | 161.60 [156.00, 167.00] | |
| Weight, kg | 0.808 | |||
| Mean ± SD | 61.2 ± 12.7 | 60.9 ± 12.4 | 61.3 ± 12.7 | |
| Median (IQR) | 60.15 [53.00, 69.43] | 60.50 [54.00, 69.75] | 60.15 [52.85, 69.43] | |
| BMI, kg/ m2, | 0.595 | |||
| Mean ± SD | 23 ± 4 | 23 ± 4 | 23 ± 4 | |
| Median (IQR) | 23.44 [20.63, 25.50] | 23.75 [20.74, 25.62] | 23.39 [20.62, 25.49] | |
| BMI ≥30, % | 4.7 | 2.4 | 5.4 | 0.383 |
| OMI, % | 50.4 | 43.5 | 42.3 | 0.178 |
| Hypertension,% | 80.7 | 76.2 | 82 | 0.273 |
| Hyperlipidemia,% | 64.9 | 59.5 | 66.4 | 0.247 |
| Diabetes mellitus,% | 47.0 | 45.2 | 47.5 | 0.805 |
| Insulin, % | 12.2 | 4.8 | 14.2 | 0.022 |
| Family history,% | 16.5 | 12.9 | 17.9 | 0.426 |
| Smoking,% | 66.5 | 69.4 | 65.6 | 0.644 |
| Current smoker,% | 13.2 | 24.6 | 9.4 | 0.003 |
| Post PCI, % | 22.4 | 19.1 | 23.4 | 0.462 |
| PAD, % | 7.1 | 2.4 | 8.4 | 0.081 |
| SCr, mg/dl, Mean ± SD | 1.0 ± 1.0 | 0.8 ± 0.3 | 1.1 ± 1.1 | 0.172 |
| CRF, % | 11 | 6 | 12.3 | 0.116 |
| hemodialysis, % | 4.3 | 1.2 | 5.2 | 0.137 |
| Stroke, % | 8.4 | 7.1 | 8.8 | 0.825 |
| Recent AMI, % | 10.9 | 14.1 | 10.1 | 0.326 |
| NYHA III or IV, % | 26.5 | 35.3 | 24.1 | 0.051 |
| LVEF, % | <0.0001 | |||
| Mean ± SD | 55 ± 11 | 50 ± 18 | 54 ± 14 | |
| Median (IQR) | 57.50 [43.00, 67.00] | 50.00 [34.00, 66.0] | 59.00 [46.00, 68.00] | |
| LMT stenosis, % | 40 | 53 | 37 | 0.009 |
| Coronary stenosis ≥50, Mean ± SD | 2.5 ± 0.7 | 2.6 ± 0.7 | 2.5 ± 0.7 | 0.101 |
| emergency operation, % | 10.9 | 22.4 | 7.8 | 0.001 |
| EuroSCORE II, Mean ± SD | 2.0 ± 2.3 | 2.8 ± 2.9 | 1.7 ± 2.1 | 0.0001 |
SD: Standard Deviation, IQR: Interquartile Range, BMI: Body Mass Index, OMI: Old Myocardial Infarction, PCI: Percutaneous Coronary Intervention, PAD: Peripheral Arterial Disease, SCr: Serum Creatinine, CRF: Chronic Renal Failure, AMI: Acute Myocardial Infarction, NYHA: New York Heart Association, LVEF: Left Ventricular Ejection Fraction, LMT: Left main coronary trunk, EuroSCORE: European system for cardiac operative risk evaluation