Wenckebach phenomenon in the posterior division of the left branch.
D001145:Arrhythmias, Cardiac / Q000150:complications; D002037:Bundle-Branch Block / Q000150:complications / Q000503:physiopathology*; D004562:Electrocardiography; D006327:Heart Block / Q000150:complications; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged