TABLE 1.
Summary of mean hemodynamic variables, intensity ratio (I1,0/I1,1), and d1,0 during steady-state contractions before and during volume loading
| Baseline | Volume loading | ||
|---|---|---|---|
| MHR (bpm) | 353.5 ± 34.5 | 359.5 ± 30.1 | |
| EDLVP (mm Hg) | 9.2 ± 2.7 | 10.4 ± 2.4 | |
| ESLVP (mm Hg) | 113.5 ± 20 | 132.5 ± 14.1 | |
| LV dP/dt maximum (mm Hg/s) | 5582 ± 943 | 7380 ± 1036 | P < 0.019 |
| LV dP/dt minimum (mm Hg/s) | −3521 ± −865 | −5073 ± −954 | P < 0.007 |
| Peak LV pressure/volume ratio (mm Hg/ml) | 615.3 ± 164.3 | 629.9 ± 85.4 | |
| SV (μl) | 88.7 ± 7.1 | 139.2 ± 4.3 | P < 0.001 |
| EF (%) | 34.9 ± 3.5 | 41.0 ± 2.4 | P < 0.014 |
| CO (ml/min) | 31.4 ± 4.9 | 50.0 ± 3.3 | P < 0.001 |
| ED intensity ratio | 2.64 ± 0.38 | 3.06 ± 0.40 | |
| Minimum intensity ratio | 1.29 ± 0.35 | 0.96 ± 0.28 | P < 0.044 |
| Mass transfer index (a.u.) | 1.36 ± 0.23 | 2.14 ± 0.29 | P < 0.013 |
| Maximum d1,0 change (nm) | 1.65 ± 0.38 | 2.19 ± 0.50 |