Flecainide-induced aggravation of ventricular tachycardia.
Flecainide acetate is a new class I antiarrhythmic agent which slows atrial, A-V nodal and ventricular conduction velocity, and prolongs refractoriness of these structures (Borchard et al., 1982; Hodess et al., 1979). Recent studies with oral flecainide therapy suggested its high potential for suppression of ventricular tachycardia in humans (Anderson et al., 1981; Duff et al., 1981; Hodges et al., 1982). Its favorable pharmacokinetics with an average plasma half-time of about 20 hours allows in most patients twice daily dosing (Duff et al., 1981). Usually, the drug seemed to be well tolerated and side-effects, such as blurred vision, could be resolved with smaller but still effective doses (Duff et al., 1981). Actually, the ideal antiarrhythmic agent which represents a high degree of effectiveness, a low level of toxicity, a wide therapeutic range, and a prolonged antiarrhythmic action does not exist (Dreifus and Ogawa, 1977). In this report we describe a patient with flecainide-induced aggravation of ventricular tachycardia necessitating resuscitation because of severe hemodynamic deterioration.
D000889:Anti-Arrhythmia Agents / Q000009:adverse effects; D005260:Female; D005424:Flecainide; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged; D010880:Piperidines / Q000009:adverse effects*; D013610:Tachycardia / Q000139:chemically induced*
D000889:Anti-Arrhythmia Agents; D010880:Piperidines; D005424:Flecainide