• J L Pool, E B Nelson, and A A Taylor.
• Center for Experimental Therapeutics, Baylor College of Medicine, Houston, Texas 77030.
• Am. J. Med. 1988 Sep 23; 85 (3B): 192419-24.

AbstractHypertension is a major health problem for patients over 65 years of age. Control of elevated blood pressure reduces cardiovascular morbidity and mortality rates among older hypertensive patients. Increased total peripheral vascular resistance is the primary hemodynamic abnormality in these patients. Initially, diuretics were used alone to lower total peripheral vascular resistance, and thus blood pressure, in older patients. The antihypertensive efficacy of angiotensin-converting enzyme inhibitors has been questioned in this age group, in which low-renin hypertension is common. The latter condition might be thought to favor blood pressure control with diuretics and impair the response to angiotensin-converting enzyme inhibitor therapy. However, recent studies with lisinopril, a new long-acting, nonsulfhydryl angiotensin-converting enzyme inhibitor, indicate that reductions in systolic and diastolic blood pressure in older hypertensive patients receiving either angiotensin-converting enzyme inhibitor or hydrochlorothiazide monotherapy were not significantly different. These data demonstrate that angiotensin-converting enzyme inhibitor monotherapy can effectively lower blood pressure in older hypertensive patients.

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