Arterial Hemodynamics in Prehypertensives

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
	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
	1497±347	1383±441	1687±346	1412±340	1693±234	1471±195	1596±264	1314±241
/	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
	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
	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
/	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
	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
	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); = total external power (milliwatts); W_o = oscillatory external power (milliwatts); = characteristic impedance (dyne-sec/cm⁵); = magnitude of forward aortic pressure component (mmHg); = magnitude of backward aortic pressure component (mmHg); = first zero-crossing of aortic impedance modulus (Hz); = aortic compliance at peak systolic blood pressure (ml/mmHg).