Table 2.
Baseline (Bas) and after-propranolol (Pro) hemodynamic parameters (mean ± SD) in the main groups and the subgroups.
| Main groups | Subgroups | |||||||
|---|---|---|---|---|---|---|---|---|
| Parameter | Normotensives (N) (n=14) | Prehypertensives (P) (n=12) | Normotensives (N) (n=7) | Prehypertensives (P) (n=7) | ||||
| Bas | Pro | Bas | Pro | Bas | Pro | Bas | Pro | |
| HR | 83.5±13.5 | 74.3±9.7 | 76.1±6.1 | 67.3±4.0 | 89.6±13.7 | 76.6±10.4 | 74.2±5.2 | 66.6±4.1 |
| SV | 74.9±15.0 | 75.8±17.6 | 79.9±11.9 | 75.6±16.3 | 73.3±6.9 | 75.8±8.5 | 80.1±9.7 | 73.6±12.5 |
| LVEDP | 10.2±4.1 | 13.8±3.4 | 17.7±4.2 | 20.3±4.8 | 10.6±4.4 | 13.9±3.6 | 18.7±4.7 | 19.6±5.8 |
| SBP | 111.8±11.3 | 113.5±10.6 | 129.1±6.7 | 133.2±10.0 | 120.6±5.5 | 119.9±7.3 | 125.4±5.7 | 128.6±9.5 |
| DBP | 73.5±9.9 | 74.0±9.7 | 84.5±5.8 | 86.1±7.3 | 80.0±4.5 | 78.8±7.1 | 81.4±5.0 | 83.0±7.5 |
| R | 1239±224 | 1402±296 | 1435±266 | 1788±434 | 1257±219 | 1410±267 | 1414±177 | 1763±338 |
| Zc | 75.5±21.5 | 69.0±20.5 | 70.8±17.3 | 72.0±18.2 | 72.7±14.4 | 66.1±13.9 | 75.2±16.1 | 78.9±16.3 |
| Wt | 1497±347 | 1383±441 | 1687±346 | 1412±340 | 1693±234 | 1471±195 | 1596±264 | 1314±241 |
| Wo/Wt | 0.15±0.03 | 0.14±0.03 | 0.14±0.02 | 0.13±0.02 | 0.15±0.02 | 0.14±0.03 | 0.14±0.02 | 0.13±0.03 |
| Pf | 31.9±3.8 | 30.5±3.7 | 33.1±4.9 | 32.1±4.2 | 33.4±3.8 | 31.4±4.6 | 33.4±4.4 | 32.5±4.8 |
| Pb | 13.8±2.5 | 15.6±2.5 | 18.5±2.4 | 20.8±3.4 | 14.4±2.8 | 15.8±3.0 | 18.2±2.3 | 20.1±3.7 |
| Pb/Pf | 0.43±0.07 | 0.51±0.06 | 0.56±0.06 | 0.65±0.08 | 0.43±0.08 | 0.51±0.08 | 0.55±0.06 | 0.63±0.10 |
| f0 | 3.1±0.6 | 3.3±0.6 | 3.6±0.7 | 3.8±0.8 | 3.5±0.5 | 3.5±0.3 | 3.5±0.6 | 3.6±0.9 |
| Cs | 1.8±0.8 | 1.7±0.8 | 1.4±0.4 | 1.2±0.4 | 1.6±0.5 | 1.5±0.4 | 1.4±0.4 | 1.3±0.4 |
Abbreviations: HR = heart rate (bpm); SV = stroke volume (ml); LVEDP = left ventricular end-diastolic pressure (mmHg); SBP/DBP = peak systolic/diastolic aortic blood pressure (mmHg); R = peripheral resistance (dyne-sec/cm5); Wt = total external power (milliwatts); Wo = oscillatory external power (milliwatts); Zc = characteristic impedance (dyne-sec/cm5); Pf = magnitude of forward aortic pressure component (mmHg); Pb = magnitude of backward aortic pressure component (mmHg); f0 = first zero-crossing of aortic impedance modulus (Hz); Cs = aortic compliance at peak systolic blood pressure (ml/mmHg).