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Verapamil therapy for stable exertional angina pectoris.

Abstract
Clinical and exercise responses to therapy with the calcium-channel blocking agent verapamil were assessed in 26 patients with stable exertional angina pectoris using a double-blind, placebo-controlled, randomized crossover study design. Verapamil, 480 mg daily, reduced the frequency of angina attacks (5.6 +/- 7.3 to 2.2 +/- 3.0 attacks per week, p less than 0.001) and number of nitroglycerin tablets consumed (3.4 +/- 4.9 to 1.2 +/- 2.5 tablets per week, p less than 0.05), and increased exercise duration (6.4 +/- 2.1 to 7.5 to 1.8 minutes, p less than 0.001) (all data are mean +/- standard deviation). These changes were significantly better than those seen with placebo. These beneficial effects of verapamil were related to significant reduction in the heart rate-systolic blood pressure product during submaximal exercise. Adverse effects from verapamil were few and consisted primarily of constipation in 6 patients. A total of 193 patients had been entered in 6 independent clinical trials, which have compared verapamil with placebo for the treatment of stable exertional angina pectoris, using a similar study design. The combined evidence from all these studies indicates that verapamil is a highly effective and safe drug for the treatment of stable effort-related angina pectoris.
AuthorsD A Weiner, M D Klein
JournalThe American journal of cardiology (Am J Cardiol) Vol. 50 Issue 5 Pg. 1153-7 (Nov 1982) ISSN: 0002-9149 [Print] UNITED STATES
PMID6814225 (Publication Type: Clinical Trial, Comparative Study, Journal Article, Randomized Controlled Trial)
Chemical References
  • Verapamil
  • Nitroglycerin
Topics
  • Adult
  • Aged
  • Angina Pectoris (drug therapy)
  • Blood Pressure (drug effects)
  • Clinical Trials as Topic
  • Constipation (chemically induced)
  • Double-Blind Method
  • Heart Rate (drug effects)
  • Humans
  • Male
  • Middle Aged
  • Nitroglycerin (therapeutic use)
  • Physical Exertion
  • Random Allocation
  • Verapamil (adverse effects, therapeutic use)

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