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The efficacy and tolerability of enalapril in a formulation with a very low dose of hydrochlorothiazide in hypertensive patients resistent to enalapril monotherapy. 1995

S J Guul, and I Os, and A J Jounela
Department of Medical Cardiology, Vejle Hospital, Denmark.

The antihypertensive efficacy and tolerability of formulations of enalapril and low (12.5 mg) and very low (6 mg) doses of hydrochlorothiazide (HCTZ) were compared with enalapril and placebo. Four hundred and two patients with mild to moderate essential hypertension were treated with 20 mg enalapril for 8 weeks. Patients (n = 296) with persistent supine diastolic blood pressure > 95 mm Hg after enalapril monotherapy were randomized to receive enalapril/placebo (group I), 6 mg enalapril/HCTZ (group II), or 12.5 mg enalapril/HCTZ (group III) for another 8 weeks in a double-blind design. The mean reductions in blood pressure were significantly larger in groups II and III compared to group I, 7.3 (95% CI, -9.0; -6.2), 7.7 (-9.2;-6.3), and 4.1 (-5.9;-2.9) mm Hg, respectively P < .01 for groups II and III compared to group I). No difference in side effects was observed between the three groups. A very low dose of 6 mg HCTZ acts synergistically when given together with enalapril, but is devoid of adverse metabolic effects.

UI MeSH Term Description Entries
D006973 Hypertension Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more. Blood Pressure, High,Blood Pressures, High,High Blood Pressure,High Blood Pressures
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D004311 Double-Blind Method A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment. Double-Masked Study,Double-Blind Study,Double-Masked Method,Double Blind Method,Double Blind Study,Double Masked Method,Double Masked Study,Double-Blind Methods,Double-Blind Studies,Double-Masked Methods,Double-Masked Studies,Method, Double-Blind,Method, Double-Masked,Methods, Double-Blind,Methods, Double-Masked,Studies, Double-Blind,Studies, Double-Masked,Study, Double-Blind,Study, Double-Masked
D004338 Drug Combinations Single preparations containing two or more active agents, for the purpose of their concurrent administration as a fixed dose mixture. Drug Combination,Combination, Drug,Combinations, Drug
D004351 Drug Resistance Diminished or failed response of an organism, disease or tissue to the intended effectiveness of a chemical or drug. It should be differentiated from DRUG TOLERANCE which is the progressive diminution of the susceptibility of a human or animal to the effects of a drug, as a result of continued administration. Resistance, Drug
D004656 Enalapril An angiotensin-converting enzyme inhibitor that is used to treat HYPERTENSION and HEART FAILURE. Enalapril Maleate,MK-421,MK421,Renitec,Renitek,MK 421,Maleate, Enalapril
D005260 Female Females
D006339 Heart Rate The number of times the HEART VENTRICLES contract per unit of time, usually per minute. Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse

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