Ambulatory blood pressure measurement in assessing the antihypertensive effect of benazepril plus hydrochlorothiazide in a fixed combination.

Ambulatory 24-hour blood pressure monitoring was used to assess the antihypertensive efficacy of the angiotensin-converting enzyme (ACE) inhibitor benazepril in combination with the diuretic hydrochlorothiazide (HCTZ) in 17 mildly to moderately hypertensive patients. Compared with placebo, benazepril 10 mg + HCTZ 12.5 mg induced a statistically and clinically significant reduction in the mean, systolic, and diastolic blood pressures. Cumulative percentages of diastolic blood pressure readings < 90 mmHg were also greater with the combination treatment than with placebo. No patient discontinued the treatment because of adverse effects.