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Antihypertensive effect of bopindolol: a multi-centre study
Insights
Bopindolol effectively lowers blood pressure in patients with essential hypertension. This study shows bopindolol monotherapy significantly reduces both systolic and diastolic blood pressure and heart rate.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Hypertension is a prevalent cardiovascular condition requiring effective management.
- Nonselective beta-adrenergic receptor blockers are a cornerstone in hypertension treatment.
- Bopindolol offers a long duration of action and intrinsic sympathomimetic activity.
Purpose of the Study:
- To evaluate the efficacy of varying bopindolol monotherapy doses in patients with essential hypertension.
- To assess the dose-response relationship of bopindolol in reducing blood pressure.
Main Methods:
- A 14-week, single-blind, placebo-controlled trial involving 44 patients with mild to moderate essential hypertension.
- Patients received bopindolol monotherapy, with doses titrated from 1 mg to a maximum of 2 mg daily.
- Blood pressure, heart rate, ECG, and side effects were monitored bi-weekly.
Main Results:
- Bopindolol significantly reduced supine systolic and diastolic blood pressure compared to placebo at 4, 8, and 12 weeks (P < 0.01).
- Supine heart rate was also significantly lowered by bopindolol treatment (P < 0.01).
- Dose-dependent reductions in blood pressure were observed, with the 2 mg dose showing the greatest effect.
Conclusions:
- Bopindolol monotherapy is an effective treatment for essential hypertension.
- The drug demonstrates a favorable safety profile with significant reductions in blood pressure and heart rate.
- Titration of bopindolol dosage allows for effective blood pressure normalization in hypertensive patients.
Abstract:
The objective of the study was to investigate the efficacy of different dose levels of bopindolol monotherapy in hypertension. This potent nonselective beta-adrenergic receptor blocker has intrinsic sympathomimetic activity and long duration of action. Forty-four patients with essential hypertension of mild (n = 40) or moderate (n = 4) severity (90 less than DBP less than or equal to 115 mmHg at the end of the placebo period) entered and completed the single-blind, placebo-controlled trial. The study lasted 14 weeks: 2 weeks on placebo, and 12 weeks on active treatment during which the initial dose of bopindolol, 1 mg daily, was augmented up to 1.5 mg, then to 2 mg at four-week intervals until BP normalized or a maximum dose of 2 mg/day bopindolol was reached. The bopindolol was administered once a day in the morning. Patients were seen every other week in the morning before drug taking, when BP and heart rate, supine and standing, a twelve lead ECG and side-effects were recorded. Compared with placebo, supine BP was significantly reduced by bopindolol: from 169 +/- 2/103 +/- 1 mmHg to 148 +/- 3/92 +/- 1, 144 +/- 3/90 +/- 1 and 136 +/- 2/85 +/- 0.6 mmHg at the end of 4, 8 and 12 weeks of treatments, respectively (P less than 0.01 for each). BP changes during standing were similar. Bopindolol lowered the supine heart rate from 84 +/- 2 to 75 +/- 1, 74 +/- 1, 72 +/- 1 beats/min (P less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
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