Right ventricle bipolar pacing may prevent appropriate biventricular pacing from two pacemakers. Case report.
This article reports on practical problems and possible solutions that may occur in case of upgrading a dual-chamber pacemaker by implanting a second left ventricular ventricular pacing, ventricular sensing, ventricular triggering (VVT) pacemaker. This therapeutic strategy was considered appropriate in the case of a 73-year-old patient with severe heart failure, who was scheduled to undergo coronary artery bypass surgery. A right-sided, dual-chamber pacemaker had been already implanted to the patient. The duration of the paced QRS complex was 220 ms and inter- and intraventricular dyssynchrony was documented in the echocardiographic study. We describe the methodological problems and possible solutions related to biventricular pacing following the abovementioned strategy.
Department of Cardioolgy, Evagelismos General Hospital, Athens, Greece.
Athanasios I
AI
Kranidis
George K
GK
Andrikopoulos
Kostas G
KG
Kappos
Tania P
TP
Bouki
Panos N
PN
Dedehlias
D000368:Aged; D002304:Cardiac Pacing, Artificial / Q000379:methods; D004452:Echocardiography; D004562:Electrocardiography; D006801:Humans; D010138:Pacemaker, Artificial