Table 1.
Preoperative Baseline Characteristics
| Demographics and Preoperative Characteristics | Nonsevere RVF (n = 57) | Severe RVF (n = 28) | P Value |
| Age | 55 ± 12 | 56 ± 11 | .58 |
| Male sex: N (%) | 44 (78.57) | 24 (85.71) | .22 |
| Body mass index | 28.16 ± 6.03 | 28.08 ± 6.35 | .96 |
| Body surface area | 1.95 ± 0.23 | 2.01 ± 0.34 | .32 |
| Ischemic CM (versus nonischemic) | 19 (33.93) | 7 (25.00) | .45 |
| Re-do sternotomy | 11 (19.64) | 4 (14.29) | .76 |
| Preoperative mechanical ventilation: N (%) | 0 (0) | 1 (3.70) | .33 |
| LVEF <20%: N (%) | 52 (92.86) | 27 (96.43) | .66 |
| CRF (Cr > 2.3 mg/dL): N (%) | 3 (5.00) | 2 (8.00) | .74 |
| Nonsevere RVF | Severe RVF | P Value | |
| Laboratory variables | |||
| Creatinine (mg/dL) | 1.22 ± 0.52 | 1.43 ± 0.72 | .13 |
| BUN (mg/dL) | 23.57 ± 14.29 | 33.07 ± 14.89 | .01 |
| AST (IU/L) | 28.21 ± 19.83 | 32.54 ± 14.89 | .31 |
| Total bilirubin (mg/dL) | 0.97 ± 0.75 | 1.43 ± 1.02 | .02 |
| Support device variables | |||
| HeartWare device: N (%) | 36 (64.29) | 18 (64.29) | >.99 |
| HeartMate device: N (%) | 20 (35.71) | 10 (35.71) | >.99 |
| Bridge to transplant: N (%) | 37 (66.07) | 20 (71.43) | >.99 |
| Scoring variables | |||
| INTERMACS score | 2.35 ± 0.85 | 2.81 ± 0.72 | .01 |
| RVFRS: median (interquartile range) | 0 (0, 0) | 0 (0, 2.5) | .09a |
All data are presented as mean ± standard deviation or N (%) except where noted. Comparisons are made with 2-tailed t test and χ2 tests.
Abbreviations: AST, aspartate aminotransferase; BUN, blood urea nitrogen; CM, cardiomyopathy; CRF, chronic renal failure; HbA1c, Hemoglobin A1c; INTERMACS, interagency registry for mechanically assisted circulatory support; LVEF, left ventricular ejection fraction; RVF, right ventricular failure; RVFRS, right ventricular failure risk score.
a
Mann-Whitney U test.