The effectiveness of beta-blockade and its influence on heart rate variability in vasovagal patients.

Abstract

The aim of this study was to assess the effectiveness of chronic medical treatment with oral propranolol and its influence on heart rate variability in patients with vasovagal syndrome. A spectral frequency domain analysis was used for the estimation of heart rate variability characteristics. Thirty-six patients, mean age 49 +/- 17 years, with a history of… (More)

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