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Angiology
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Placebo-Controlled, Double-Blind Study of the Effect of Verapamil in Intermittent Claudication

Hans-Henrik Kimose

Department of Thoracic and Cardiovascular Surgery, Aarhus University Hospital

Jens Peder Bagger

Department of Cardiology, Skejby Sygehus, Aarhus University Hospital, Aarhus N, Denmark

Michael Trier Aagaard

Department of Thoracic and Cardiovascular Surgery, Aarhus University Hospital

Peter Kildeberg Paulsen

Department of Thoracic and Cardiovascular Surgery, Aarhus University Hospital

The clinical effect of verapamil was tested in 24 patients with intermittent claudication in a randomized, placebo-controlled, double-blind, crossover study. Slow-release verapamil or placebo was given for two periods of three weeks. The walking distance, systemic blood pressure, and ankle-brachial blood pressure index were measured. Furthermore, a possible change in peripheral vascular tone was provoked by hyperventilation. The walking distance rose after both verapamil (40%) and placebo (31%) (p<0.01 for both) but tended to increase only after verapamil (7%) as compared with placebo. Blood pressure fell equally after both verapamil and placebo (p<0.05 for both). Verapamil did not influence the ankle-brachial blood pressure index. No signs of vasoactivity in the lower extremities were seen after hyperventilation. Although the greatest individual improvements in walking distance were seen after verapamil administration, it was not possible to predict positive responders among the patients.

Angiology, Vol. 41, No. 8, 595-598 (1990)
DOI: 10.1177/000331979004100802
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