Far-field P-wave sensing by the right ventricular lead of conventional dual chamber pacemakers.
This report describes two cases of far-field sensing of the P wave by the ventricular channel of conventional DDD pacemakers programmed to a relatively high sensitivity to promote sensing of ventricular extrasystoles. Ventricular pacing was maintained in both cases when the ventricular channel was not inhibited. One case was caused by displacement of a bipolar ventricular lead towards the right ventricular inflow tract. The other case occurred only in relation to an atrial extrasystole in the absence of ventricular lead displacement.
Barold
S Serge
SS
Florida Cardiovascular Institute and Tampa General Hospital, Tampa, FL, USA. ssbarold@aol.com
Garrigue
Stéphane
S
Clémenty
Jacques
J
D001021:Aortic Valve / Q000601:surgery; D004562:Electrocardiography; D004869:Equipment Safety; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology / Q000628:therapy*; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D006801:Humans; D008875:Middle Aged; D008991:Monitoring, Physiologic; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D012680:Sensitivity and Specificity