title: [Wolff-Parkinson-White syndrome: two accessory pathways concealed conduction accompanied by enhanced AV node conduction (author's transl)].
abstract: The case report of a 40 years old female patient with Wolff-Parkinson-White syndrome and concealed conduction of the accessory pathways is presented. Endocardial mapping revealed two re-entry tachycardias with different rates and different sequences of retrograde atrial depolarisation. These accessory bypass tracts were accompanied by enhanced AV node conduction. -- Patients with multiple accessory pathways and enhanced AV node conduction appear to be a special group of WPW-syndrome in respect of life-threatening tachycardias.
mesh_terms: D000200:Action Potentials; D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology*; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*
vernacular_title: Wolff-Parkinson-White-Syndrom: Zwei akzessorische, sog. verborgene Leitungsbahnen und funktionell "kleiner" AV-Knoten.