Comparative Study of Essential Hypertension in Rural and Urban Populations - From the Viewpoint of Hemodynamic Indices and Blood Chemistry.
Noda-K; Seki-H; Kanayama-M; Fudamasu-F; Okada-Y; Yagi-K; Fujino-F; Miura-Y
Proceedings of the VII International Congress of Rural Medicine, Salt Lake City, Utah, September 17-21, 1978, International Association of Agricultural Medicine 1978 Sep:118-121
A study of the pathophysiology of essential hypertension in rural and urban populations in Japan was conducted. The study group consisted of 20 normotensive females and 10 hypertensive females from Kanagawa Prefecture, a rural area in southern Japan. They were matched to 20 normotensive and 10 hypertensive females from the Tokyo metropolitan area. The age range of the subjects in both groups was 20 to 59 years. Electrocardiograms (ECGs), phonocardiograms, and digital plethysmograms were recorded. Ventricular ejection times were measured. Hemoglobin and serum albumin, total cholesterol, and triglycerides were determined. Prognostic indices for arteriosclerosis (PAI) were computed from the blood chemistry parameters. Heart rates determined from the ECGs were within the normal range for all subjects, but appeared to be higher in the rural than in the urban subjects. Left ventricular ejection times showed age related decreases in the urban subjects and in the hypertensive rural subjects. The tension time index, a parameter related to myocardial oxygen consumption, was higher in hypertensive urban and rural subjects and in younger normotensive subjects of both groups. Peripheral resistance was highest in older rural subjects with hypertension. The PAI was higher in older subjects with hypertension in both groups. The authors conclude that hypertensive individuals living in rural areas are at risk of developing hypertensive heart failure. Urban residents with hypertension are at risk of developing coronary disease.
NIOSH-Grant; Grants-other; Agricultural-workers; Environmental-factors; Blood-pressure; Cardiovascular-function; Physiological-measurements; Risk-analysis; Risk-factors;
Prev Med & Environmental Hlth University of Iowa Inst/agric Med & Environ Hlth Iowa Oakdale, Iowa 52319
Other Occupational Concerns; Grants-other;
Proceedings of the VII International Congress of Rural Medicine, Salt Lake City, Utah, September 17-21, 1978, International Association of Agricultural Medicine
University of Iowa, Iowa City, Iowa