Baseline characteristics of the study population
| Impella (n=50) | IABP (n=50) | P value | |
| Age (years) | 65 (56; 72) | 73 (64; 77) | 0.69 |
| Male, n (%) | 38 (76) | 35 (70) | 0.499 |
| Acute myocardial infarction, n (%) | 33 (66) | 39 (78) | 0.181 |
| PCI, n (%) | 31 (62) | 36 (73) | 0.287 |
| OHCA, n (%) | 12 (24) | 13 (26) | 0.198 |
| IHCA, n (%) | 12 (24) | 17 (34) | 0.378 |
| Severely reduced LV function, n (%) | 41 (82) | 36 (72) | 0.235 |
| PAD, n (%) | 10 (20) | 6 (12) | 0.315 |
| Prior CABG, n (%) | 4 (8) | 6 (12) | 0.44 |
| Diabetes mellitus, n (%) | 17 (34) | 20 (40) | 0.386 |
| COPD, n (%) | 8 (16) | 6 (12) | 0.621 |
| Chronic renal failure, n (%) | 29 (58) | 27 (54) | 0.683 |
| Serum lactate (mmol/L) | 3.2 (1.7; 6.3) | 2.9 (1.4; 5.7) | 0.415 |
| Creatinine (mg/dL) | 1.3 (1.1; 1.7) | 1.35 (1; 2) | 0.539 |
| Lactate dehydrogenase (U/L) | 523 (309; 938) | 368 (288; 789) | 0.073 |
| Haemoglobin (g/L) | 130.2 (110.3; 140.8) | 120.8 (100.7; 140.1) | 0.221 |
| SOFA score | 9 (7; 11) | 8.5 (6; 12) | 0.572 |
| APACHE II score | 22 (17; 26) | 25.5 (18; 29) | 0.076 |
| Baseline inotropic score | 21.6 (5.5; 57.8) | 16.5 (0; 37.8) | 0.126 |
Categorical variables are reported as absolute values and percentages, whereas continuous data are expressed as median with IQR.
APACHE II, Acute Physiology, Chronic Health Evaluation; CABG, coronary artery bypass graft; COPD, chronic obstructive pulmonary disease; IHCA, in-hospital cardiac arrest; LV, left ventricular; OHCA, out-of-hospital cardiac arrest; PAD, peripheral arterial disease; PCI, percutaneous coronary intervention; SOFA, Sequential Organ Failure Assessment.