title: Electrophysiologic studies in sick sinus syndrome following surgery for d-transposition of the great arteries.
abstract: His bundle electrograms and atrial pacing are reported in a 10 1/2-year-old boy and a 12-year-old girl, both of whom underwent Mustard repair for complete d-transposition of the great arteries. Each patient had progressive evidence of sick sinus syndrome culminating in syncope. Improvement occurred after insertion of a demand pacemaker.
mesh_terms: D001146:Arrhythmia, Sinus / Q000150:complications / Q000209:etiology / Q000503:physiopathology*; D002036:Bundle of His / Q000503:physiopathology; D002648:Child; D004562:Electrocardiography; D004594:Electrophysiology; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial; D011183:Postoperative Complications; D013575:Syncope / Q000209:etiology; D014188:Transposition of Great Vessels / Q000601:surgery*