Table 3.
Change of right ventricular function indices and tissue perfusion parameters on various Impella output levels. IO: Impella output, PAPi: Pulmonary Artery Pulsatility index, RVSWI: right ventricular stroke work index, RA/PCWP: right atrial pressure/pulmonary capillary wedge pressure, SvO2: central venous oxygen saturation. * Variables displayed as mean ± SD. ‡ Variables displayed as median (interquartile range).
| Impella Output (IO) [L/min] |
Baseline (BL) | +0.5 L/min | +1.0 L/min | p-Value |
|---|---|---|---|---|
| logPAPi | 1.248 ± 0.569 | 1.268 ± 0.632 | 1.353 ± 0.01 | 0.717 |
| PAPi ‡ | 2.033 (2.01) | 2.0 (2.63) | 2.19 (2.84) | |
| PAPi * | 3.286 ± 3.801 | 3.538 ± 4.2 | 4.94 ± 7.91 | |
| logRVSWI | 1.95 ± 0.69 | 1.86 ± 0.7 | 2.01 ± 0.74 | 0.599 |
| RVSWI ‡ | 6.94 (5.71) | 6.75 (6.03) | 6.92 (6.81) | |
| RVSWI * | 7.77 ± 5.86 | 6.92 ± 4.51 | 8.42 ± 6.72 | |
| logRA/PCWP | 0.613 ± 0.343 | 0.609 ± 0.377 | 0.55 ± 0.29 | 0.601 |
| RA/PCWP ‡ | 0.785 (0.5) | 0.767 (0.47) | 0.75 (0.5) | |
| RA/PCWP * | 0.976 ± 0.903 | 1.02 ± 1.262 | 0.815 ± 0.588 | |
| SvO2 (%) ‡ | 63.9 (17.0) | 65.9(14.3) | 66.9 (15.5) | 0.498 |
| SvO2 (%) * | 62.15 ± 14.9 | 65.5 ± 10.82 | 67.19 ± 10.44 | |
| Lactate (mmol/L) ‡ | 1.2 (1.0) | 1.2 (0.85) | 1.2 (0.75) | 0.112 |
| Lactate (mmol/L) * | 1.71 ± 1.61 | 1.55 ± 1.46 | 1.54 ± 1.32 |