Torsades de pointes associated with chlorpromazine: Case report and review of associated ventricular arrhythmias

被引:31
作者
Hoehns, JD
Stanford, RH
Geraets, DR
Skelly, KS
Lee, HC
Gaul, BL
机构
[1] Univ Iowa, Coll Pharm, Iowa City, IA 52242 USA
[2] Univ Iowa, Coll Med, Iowa City, IA USA
[3] Vet Affairs Med Ctr, Iowa City, IA 52242 USA
来源
PHARMACOTHERAPY | 2001年 / 21卷 / 07期
关键词
D O I
10.1592/phco.21.9.871.34565
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Purpose. To present a case of chlorpromazine-associated torsades de pointes, review established cases of ventricular arrhythmias associated with chlorpromazine, and describe the proarrhythmic characteristics of this drug. Data Sources. Articles identified through a search of MEDLINE and IDIS from January 1966-November 2000 and thorough review of the article bibliographies. Patient cases also were identified from a search of the Food and Drug Administration's Adverse Event Reporting System database (November 1997-March 2001). Cases involving intentional overdoses of chlorpromazine were excluded. Results. In addition to the case reported herein, 12 cases of documented, chlorpromazine-associated ventricular arrhythmias were identified; five had characteristic features of torsades de pointes. Chlorpromazine delayed repolarization and produced electrocardiographic abnormalities; although, whether chlorpromazine induced torsades de pointes through a mechanism of early afterdepolarizations is unclear. Similar to other instances of drug-induced torsades de pointes, concurrent factors such as electrolyte deficiencies may place the patient at increased risk for arrhythmia. Conclusions. Chlorpromazine can delay repolarization and produce electrocardiographic abnormalities. These can result infrequently in ventricular arrhythmias and torsades de pointes, particularly in patients with confounding factors.
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收藏
页码:871 / 883
页数:13
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