Inhibition of biventricular pacemakers by oversensing of far-field atrial depolarization.
This report describes two patients who exhibited far-field oversensing of the P wave by the ventricular channel of a DDD biventricular pacemaker implanted for the treatment of congestive heart failure. Oversensing probably occurred secondary to slight displacement of the left ventricular lead in the coronary venous system. Long-term reliable pacing was restored by decreasing the sensitivity of the ventricular channel.
Lipchenca
Igor
I
Heart Institute, Sheba Medical Center and Tel Aviv University, Tel Hashomer, Israel.
Garrigue
Stéphane
S
Glikson
Michael
M
Barold
S Serge
SS
Clémenty
Jacques
J
D000368:Aged; D004562:Electrocardiography; D004868:Equipment Failure; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006333:Heart Failure / Q000628:therapy*; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial