title: Echocardiographic documentation of atrial mechanical systole after dual-chamber pacemaker implantation in a patient without electrically evident atrial activity.
abstract: Documentation of synchronized atrial transport mechanical systole, after dual-chamber pacemaker implantation is generally not sought clinically. In this patient, no electrical atrial activity was seen after elective revision to dual-chamber from single-chamber pacing. M-mode echocardiography provided definitive proof of proper pacemaker function with intact mechanical atrial systole. Echocardiography should be considered in the postoperative evaluation of patients in whom proper atrial or ventricular mechanical function is in doubt.
mesh_terms: D000368:Aged; D004452:Echocardiography; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology*; D006333:Heart Failure / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D010138:Pacemaker, Artificial; D011182:Postoperative Care