Table 1.
Hemodynamic Parameters
| Variable | Baseline | Afterload | P value |
|---|---|---|---|
| BPs (mm Hg) | 103.00 ± 11.73 | 133.36 ± 10.07 | 0.0014 |
| BPd (mm Hg) | 74.64 ± 11.73 | 80.82 ± 26.23 | 0.3253 |
| BPm (mm Hg) | 84.10 ± 10.19 | 98.33 ± 17.04 | 0.0080 |
| HR (beats/min) | 74.65 ± 7.77 | 79.07 ± 13.49 | 0.3693 |
| CO (mL/min) | 2923.08 ± 610.59 | 2389.61 ± 517.36 | 0.0385 |
| VR (dyne·sec·cm-5) | 2358.31 ± 411.85 | 3395.17 ± 701.84 | 0.0020 |
| LVEDP (mm Hg) | 13.31 ± 3.21 | 17.75 ± 6.28 | 0.1472 |
| +dP/dt (mm Hg/sec) | 1302.25 ± 209.73 | 1309.63 ± 259.33 | 0.9519 |
| -dP/dt (mmHg/sec) | -2297.75 ± 492.18 | -1944.75 ± 580.56 | 0.0097 |
| Tau [42] | 39.49 ± 10.54 | 44.49 ± 17.86 | 0.5005 |
Abbreviations: +dP/dt, maximum positive LV pressure change; -dP/dt, maximum negative LV pressure change BPs, BPd, and BPm, blood pressure systolic, diastolic, and mean, respectively; CO, cardiac output; HR, heart rate; LVEDP, left ventricular end-diastolic pressure; Tau, the time constant of isovolumic relaxation; VR, vascular resistance.