title: [Closed intracardiac cardioversion in therapy resistant atrial flutter].
abstract: Cardiac frequency could not be lowered in a 62-year-old patient with atrial flutter and 2:1 conduction. Using an electrode catheter positioned in the His bundle area an electric current of 80 Ws was effected. A third-degree atrioventricular block developed which regressed after 6 hours. The electrophysiologic assessment after one week showed a marked diminution of AV node conduction capacity.
mesh_terms: D000113:Acetyldigoxins / Q000627:therapeutic use; D001282:Atrial Flutter / Q000188:drug therapy / Q000628:therapy*; D002036:Bundle of His; D004110:Diltiazem / Q000627:therapeutic use; D004554:Electric Countershock; D004562:Electrocardiography; D004567:Electrodes, Implanted; D006327:Heart Block / Q000209:etiology; D006333:Heart Failure / Q000628:therapy; D006801:Humans; D008297:Male
chemical_list: D000113:Acetyldigoxins; D004110:Diltiazem
vernacular_title: Geschlossene intrakardiale Kardioversion bei therapierefraktärem Vorhofflattern.