Abstract

GOMEZ-ALVAREZ, Enrique  and  GONZALEZ-JAIMES, Armando. Low-dose combination therapy for hypertension: A study of therapeutic targets in routine clinical practice conditions. Rev. Mex. Cardiol [online]. 2012, vol.23, n.2, pp.43-51. ISSN 0188-2198.

Hypertension is poorly controlled in most patients. The control rate, defined as a systolic blood pressure (SBP) < 140 mmHg and diastolic blood pressure (DBP) < 90 mmHg, is less than 20% in Mexico. This study involving 31 research centers, carried out under real conditions was designed to establish that 6.25 mg of hydrochlorothiazide (HCTZ) given once daily in fixed combination with 2.5 mg or 5 mg of bisoprolol fumarate can contribute to achieve the control targets in patients with grade I, II or III systemic hypertension who failed to a previous antihypertensive regimen, and that these combinations are safer than the drugs alone. The results showed significant mean decreases in systolic and diastolic blood pressure of 33.3 mmHg and 18.4 mmHg respectively. The response rate was 85.7% at 32 weeks of treatment. There was a decrease in mean heart rate of 10.8 beats/min, final average heart rate was 67.05 beats per minute. The results of this study show that the combination of bisoprolol in doses of 2.5 or 5.0 mg to 6.25 mg of hydrochlorothiazide per day, has additive effects that are effective in controlling blood pressure, whether mild, moderate or severe, and that helps hypertensive patients to achieve the control goals at a very high percentage and in the short term, without affecting other systems so they are safe in hypertensive diabetic and dyslipidemic patients, and in conjunction with the heart rate regulation provides cardio-protection to patients at high cardiovascular risk. Fixed combinations of antihypertensive drugs simplify dosing regimen, improve adherence to treatment, hypertension control, decrease dose-dependent adverse effects and decrease costs as a first line treatment for hypertension.

Keywords : Hypertension; therapeutic goals; bisoprolol; hydrochlorothiazide; heart rate; cardio-protection.

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