Effect of flecainide on heart rate variability in subjects without coronary artery disease or congestive heart failure

Autor: Fauchier, Laurent, Babuty, Dominique, Autret, Marie Laurence, Poret, Philippe, Cosnay, Pierre, Fauchier, Jean Paul
Přispěvatelé: CHU Trousseau [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Service de Cardiologie B, Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Régional Universitaire de Tours (CHRU de Tours)
Rok vydání: 1999
Předmět:
Zdroj: Cardiovascular Drugs and Therapy
Cardiovascular Drugs and Therapy, Springer Verlag, 1998, 12 (5), pp.483-486. ⟨10.1023/a:1007710301259⟩
ISSN: 0920-3206
1573-7241
DOI: 10.1023/a:1007710301259⟩
Popis: International audience; Heart rate variability is a noninvasive indicator of autonomic nervous system activity. The role of the autonomic nervous system in the genesis of atrial or ventricular arrhythmias is now well established. Little is known about the effects of flecainide on heart rate variability in patients with normal heart structure, the main population receiving flecainide. This study was designed to evaluate the effects of flecainide on heart rate variability in patients without coronary artery disease or congestive heart failure. Time and frequency domain analysis of heart rate variability on 24-hour electrocardiogram recording were assessed in 40 patients with normal echocardiography and without evidence of coronary artery disease before and after 2 months of oral treatment with flecainide (321 +/- 57 mg/day) prescribed for Wolff Parkinson White syndrome with circus movement tachycardia. Flecainide significantly decreased all parameters of heart rate variability in the time domain (median delta% -10% to -25%) and in the frequency domain (median delta% -27% to -38%), including the markers of vagal activity. There was no correlation between plasma concentrations of flecainide and reduction in heart rate variability. It was concluded that in subjects without coronary artery disease or congestive heart failure, flecainide decreases all the measurements of heart rate variability and this decrease is not related to plasma concentrations of flecainide.
Databáze: OpenAIRE