title: Pacemaker stimulus amplitude alteration without loss of capture: an unusual ECG finding in cardiac tamponade from pacemaker lead perforation.
abstract: A variation in pacemaker stimulus amplitude can represent pacemaker system dysfunction from generator malfunction, lead insulation defect, lead fracture, or artefact of digital signal processing of the electrocardiography recorder. Pacemaker lead perforation into the pericardial space typically results in loss of capture which was not demonstrated in our patient. In summary, we report an unusual ECG finding of pacemaker stimulus amplitude alteration without loss of capture in the setting of cardiac tamponade from pacemaker lead perforation.
authors.affiliation: Department of Medicine, Columbia University-Bassett Medical Center, Cooperstown, NY 13326, United States. Electronic address: promporn_si108@yahoo.com.
authors.forename: P
authors.initials: P
authors.lastname: Suksaranjit
authors.affiliation: Department of Medicine, Columbia University-Bassett Medical Center, Cooperstown, NY 13326, United States.
authors.forename: K
authors.initials: K
authors.lastname: Prasidthrathsint
mesh_terms: D002305:Cardiac Tamponade / Q000175:diagnosis* / Q000209:etiology* / Q000503:physiopathology*; D004562:Electrocardiography; D004868:Equipment Failure; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000009:adverse effects*
keywords: Cardiac tamponade; Electrocardiography; Pacemaker capture failure; Pacemaker lead perforation; Pacemaker stimulus amplitude