Tocainide therapy for refractory ventricular arrhythmias. 1980

D M Roden, and D M Roden, and S B Reele, and S B Reele, and S B Higgins, and S B Higgins, and R K Carr, and R K Carr, and R F Smith, and R F Smith, and J A Oates, and J A Oates, and R L Woosley, and R L Woosley

Tocainide, a congener of lidocaine, was used to treat symptomatic ventricular arrhythmias in 19 patients resistant to or unable to tolerate conventional agents. In this highly selected group, 15 showed good initial responses to oral therapy. Ventricular tachycardia was suppressed to a greater extent than isolated ventricular ectopic depolarizations at any plasma concentration, and upward dose-ranging showed progressive suppression of both. Arrhythmia responsiveness to lidocaine was found to be an excellent predictor of tocainide response. Of the 15 responders, one died 24 hours after stopping therapy, three died while receiving tocainide, nine stopped because of adverse reactions (five allergic), and two continue on therapy at 1 and 4 years. We conclude that tocainide is an effective agent for the short-term suppression of ventricular arrhythmias, particularly ventricular tachycardia sensitive to lidocaine, but a high incidence of adverse effects limits its application to chronic therapy in many patients.

UI MeSH Term Description Entries
D008012 Lidocaine A local anesthetic and cardiac depressant used as an antiarrhythmia agent. Its actions are more intense and its effects more prolonged than those of PROCAINE but its duration of action is shorter than that of BUPIVACAINE or PRILOCAINE. Lignocaine,2-(Diethylamino)-N-(2,6-Dimethylphenyl)Acetamide,2-2EtN-2MePhAcN,Dalcaine,Lidocaine Carbonate,Lidocaine Carbonate (2:1),Lidocaine Hydrocarbonate,Lidocaine Hydrochloride,Lidocaine Monoacetate,Lidocaine Monohydrochloride,Lidocaine Monohydrochloride, Monohydrate,Lidocaine Sulfate (1:1),Octocaine,Xylesthesin,Xylocaine,Xylocitin,Xyloneural
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005260 Female Females
D006352 Heart Ventricles The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation. Cardiac Ventricle,Cardiac Ventricles,Heart Ventricle,Left Ventricle,Right Ventricle,Left Ventricles,Right Ventricles,Ventricle, Cardiac,Ventricle, Heart,Ventricle, Left,Ventricle, Right,Ventricles, Cardiac,Ventricles, Heart,Ventricles, Left,Ventricles, Right
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000813 Anilides Any aromatic amide obtained by acylation of aniline.

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