Transcatheter leadless pacemaker implantation in a patient with a transvenous dual-chamber pacemaker already in place.
An 83-year-old lady had a DDDR pacemaker inserted in 1997 for symptomatic atrioventricular block. She underwent battery replacement in 2008. In 2010, she developed atrial fibrillation; the pacemaker was switched to VVIR mode. During the last 2years, ventricular lead threshold increased progressively. In December 2015, she presented for elective battery replacement. After successful battery replacement, the ventricular lead threshold remained high; therefore, we implanted a leadless transcatheter pacemaker, via femoral vein access, using a dedicated catheter delivery system. Electrical measurements at this stage revealed a pacing threshold of 0.28V at 0.24msec, and an impedance of 650Ω.
Heart Center, Satakunta Central Hospital, Sairaalantie 3, Pori, Finland. Electronic address: pasi.karjalainen@satshp.fi.
Pasi P
PP
Karjalainen
Heart Center, Satakunta Central Hospital, Sairaalantie 3, Pori, Finland.
Wail
W
Nammas
Heart Center, Satakunta Central Hospital, Sairaalantie 3, Pori, Finland.
Tuomas
T
Paana
D000328:Adult; D001281:Atrial Fibrillation / Q000150:complications / Q000517:prevention & control*; D054537:Atrioventricular Block / Q000150:complications / Q000517:prevention & control*; D006328:Cardiac Catheterization / Q000295:instrumentation / Q000379:methods*; D003131:Combined Modality Therapy / Q000295:instrumentation / Q000379:methods; D004567:Electrodes, Implanted; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial; D011475:Prosthesis Failure; D019919:Prosthesis Implantation / Q000295:instrumentation / Q000379:methods*; D016896:Treatment Outcome
Atrioventricular block; Leadless pacemaker; Micra TPS