title: Double sensing by atrial automatic tachycardia-terminating pulse generator.
abstract: This report describes two cases of double sensing of the P and QRS signals by an implanted atrial bipolar automatic burst tachycardia-terminating pulse generator (Intermedics CyberTach 60) used for the treatment of supraventricular tachycardia. Double sensing occurred during normal sinus rhythm at a rate slower than the tachycardia detection criterion and caused inappropriate delivery of burst stimulation. These observations underscore the importance of the far-field QRS signal in the detection of supraventricular tachycardia by automatic pulse generators sensing the atrial electrogram.
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013617:Tachycardia, Supraventricular / Q000503:physiopathology / Q000628:therapy*; D013997:Time Factors