Alternate pacing sites for patients with tricuspid valve prostheses.
The objective of this study was to pace via a coronary vein to avoid interfering with the tricuspid valve prosthesis function. Pacing leads were inserted into the posterior cardiac vein in a 68-year-old woman (patient 1), and in the great cardiac vein and the right auricle in a 32-year-old woman (patient 2). In patient 1 the stimulation threshold was 1.8 V at implant and stabilized at 3.0 V at the 24-month follow-up. In patient 2 the ventricular pacing threshold was 1.2 V at implant and stabilized at 0.7 V at the 24-month follow-up. The cardiac output at rest increased 43% during atrioventricular synchronous pacing compared to ventricular pacing. Long-term stable ventricular pacing via the coronary venous system was obtained.
Faerestrand
Svein
S
Institute of Internal Medicine, Haukeland University Hospital, University of Bergen, Norway. svein.faerestrand@med.uib.no
Ohm
Ole-Jørgen
OJ
D000328:Adult; D000368:Aged; D001705:Bioprosthesis; D002304:Cardiac Pacing, Artificial; D003331:Coronary Vessels; D004567:Electrodes, Implanted; D005260:Female; D005500:Follow-Up Studies; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D010138:Pacemaker, Artificial; D013997:Time Factors; D014261:Tricuspid Valve / Q000601:surgery*; D014680:Veins