PMID- 3891347 OWN - NLM STAT- MEDLINE DCOM- 19850822 LR - 20190511 IS - 0195-668X (Print) IS - 0195-668X (Linking) VI - 6 IP - 2 DP - 1985 Feb TI - Efficacy of oral propafenone in chronic ventricular arrhythmias: a placebo controlled cross-over exercise study. PG - 123-9 AB - The efficacy of propafenone, a new class I C antiarrhythmic drug, on ventricular premature contractions (VPCs) during rest and exercise was assessed during a two-phase protocol: phase 1, an initial two week placebo controlled double blind cross-over assessment; phase 2, an open 3 month follow-up. Twelve consecutive patients with symptomatic chronic ventricular arrhythmias and fulfilling other inclusion criteria underwent an exercise test and were allocated to either propafenone or placebo. During the double blind phase, oral propafenone significantly reduced the number of VPCs at rest with the patient supine or sitting, during the bicycle ergometer test, and after the exercise test. After 3 months of treatment a 90 to 100% reduction of VPCs was achieved in 11 patients continuing on 600 to 900 mg of propafenone daily. Treatment was stopped in one patient during the double blind phase because of drug induced LBBB. A prolongation of the PR interval and QRS duration occurred in all patients with propafenone doses exceeding 450 mg day-1. Subjective side effects were slight and consisted of abnormal taste sensations and minor central nervous symptoms. The results suggest that propafenone is an effective drug for the treatment of ventricular arrhythmias in selected patients. A-V or intraventricular conduction disturbances contraindicate its use. FAU - Hartel, G AU - Hartel G LA - eng PT - Clinical Trial PT - Controlled Clinical Trial PT - Journal Article PL - England TA - Eur Heart J JT - European heart journal JID - 8006263 RN - 0 (Anti-Arrhythmia Agents) RN - 0 (Propiophenones) RN - 68IQX3T69U (Propafenone) SB - IM MH - Administration, Oral MH - Adult MH - Anti-Arrhythmia Agents/*therapeutic use MH - Arrhythmias, Cardiac/*drug therapy MH - Chronic Disease MH - Clinical Trials as Topic MH - Double-Blind Method MH - Electrocardiography MH - Exercise Test MH - Female MH - Heart Rate/drug effects MH - Heart Ventricles/drug effects MH - Humans MH - Male MH - Middle Aged MH - Propafenone MH - Propiophenones/*therapeutic use EDAT- 1985/02/01 00:00 MHDA- 1985/02/01 00:01 CRDT- 1985/02/01 00:00 PHST- 1985/02/01 00:00 [pubmed] PHST- 1985/02/01 00:01 [medline] PHST- 1985/02/01 00:00 [entrez] AID - 10.1093/oxfordjournals.eurheartj.a061826 [doi] PST - ppublish SO - Eur Heart J. 1985 Feb;6(2):123-9. doi: 10.1093/oxfordjournals.eurheartj.a061826.