Diminished Baroreflex Sensitivity in High Blood Pressure
نویسندگان
چکیده
منابع مشابه
Diminished baroreflex sensitivity in high blood pressure.
as the millisecond increase in cycle length per mm Hg rise in systolic pressure. The slope is an index of baroreflex sensitivity and was found to have an average value of 12.8 in 18 subjects without hypertension and 2.8 in 12 others with hypertension. When all results were pooled, there was an inverse relationship between the resting mean arterial pressure and slope of the baroreflex regression...
متن کاملBlood pressure variability in man: its relation to high blood pressure, age and baroreflex sensitivity.
1. Intra-arterial blood pressure and heart rate were recorded for 24 h in ambulant hospitalized patients of variable age who had normal blood pressure or essential hypertension. Mean 24 h values, standard deviations and variation coefficient were obtained as the averages of values separately analysed for 48 consecutive half-hour periods. 2. In older subjects standard deviation and variation coe...
متن کاملEffect of age and high blood pressure on baroreflex sensitivity in man.
The purpose of this study was to relate baroreflex sensitivity to age and arterial pressure in 61 male and 20 female untreated subjects, aged 19—66 years, whose mean arterial pressures ranged from 70 to 150 mm Hg. In this selected group of subjects there was no correlation between age and arterial pressure. The index of sensitivity used was the increase in pulse interval which occurs reflexly i...
متن کاملA noninvasive measure of baroreflex sensitivity without blood pressure measurement.
BACKGROUND Baroreflex sensitivity (BRS) and heart rate variability (HRV) are attenuated in cardiovascular disease and can give important prognostic information. Conventional measures of BRS require expensive or invasive equipment for the beat-to-beat measure of blood pressure (BP). We examined the possibility of developing a simple protocol that would provide a relatively standardized BP stimul...
متن کاملV1a vasopressin receptors maintain normal blood pressure by regulating circulating blood volume and baroreflex sensitivity.
Arginine-vasopressin (AVP) is a hormone that is essential for both osmotic and cardiovascular homeostasis, and exerts important physiological regulation through three distinct receptors, V1a, V1b, and V2. Although AVP is used clinically as a potent vasoconstrictor (V1a receptor-mediated) in patients with circulatory shock, the physiological role of vasopressin V1a receptors in blood pressure (B...
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ژورنال
عنوان ژورنال: Circulation
سال: 1969
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.39.1.48