Pacing alternans: an unusual pattern of pacemaker behavior.
We report an unusual pattern of pacemaker function related to the "autocapture" feature of a recently released pacemaker model. The electrocardiogram reveals pacing alternans. This report discusses the differential diagnosis and the correct explanation.
Pavri
B B
BB
Hospital of the University of Pennsylvania, 3400 Spruce St., Philadelphia, PA, USA.
Keefe
J M
JM
Callans
D J
DJ
Kocovic
D Z
DZ
D000465:Algorithms; D002340:Carotid Artery Diseases / Q000503:physiopathology / Q000628:therapy; D002346:Carotid Sinus / Q000503:physiopathology; D004562:Electrocardiography; D004868:Equipment Failure; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D011930:Reaction Time; D012684:Sensory Thresholds; D013577:Syndrome