[Supraventricular arrhythmia imitating ventricular ectopy due to simultaneous conduction in dual AV nodal pathways--a therapeutic problem].
In 3 post-MI patients with multiple premature ventricular complexes, programmed transoesophageal pacing generated the arrhythmia and an ecg tracing was taken. Analysis of the ecg suggested that simultaneous activation of two pathways within the A-V node maybe the cause of the arrhythmia. The activation signal reaches the ventricle through both pathways but as the conduction time differs the ventricles can be twice activated. However the second activation is aberrantly conducted leading to an ecg picture of ventricular ectopy. Verapamil suppressed the arrhythmia which further indicates the non-ventricular origin of these wide QRS complexes.
Prochaczek
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I Kliniki Chorób Wewnetrznych Slaskiej Akademii Medycznej w Katowicach.
D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014700:Verapamil / Q000494:pharmacology
D014700:Verapamil
Podwójna odpowiedź komór imitujaca ektopie komorowa po jednoczesnym pobudzeniu szybkiej i wolnej drogi wezła p-k--jako problem terapeutyczny.