Author + information
- C.P. Chan,
- Y.Q. Niu,
- K.C. Tam and
- Y.S. Chan
Transcatheter pacing system (TPS, Micra, Medtronic) was an alternative to conventional transvenous pacing. The feasibility of large delivery sheath in Chinese was unknown. The purpose was to report a series of TPS implantation in 2 centers.
This is a prospective cohort study from 2015. The primary efficacy was the percentage of patients with stable pacing capture thresholds (< 2V at 0.24 msec) and freedom from procedure related complications.
TPS were implanted in 44 patients (Age 81.9±9.8, Male=19) and mean follow up was 5.1± 4.2 months. One patient has bioprosthetic tricuspid valve, three underwent hemodialysis, six underwent extraction due to infection before and 1 has absence of superior vena cava. Indications were sick sinus syndrome (50%) and heart block (50%). The body weight was 58±9.4 kg (lowest one was 34 kg). First attempt successful rate was 36/44. One patient underwent 9 attempts and complicated by non-capture. Snaring and re-implanted uneventfully. Safety endpoint was 90.9%. One cardiac tamponade and was re-implanted after tapping. The primary efficacy was 97.7%.
TPS has high successful implantation rate in Chinese.