The Wenckebach phenomenon in sino-atrial block.
D000328:Adult; D001146:Arrhythmia, Sinus / Q000175:diagnosis*; D004071:Digitalis Glycosides / Q000627:therapeutic use; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System; D006801:Humans; D008297:Male; D008875:Middle Aged; D012849:Sinoatrial Node
D004071:Digitalis Glycosides