Percent ventricular pacing with managed ventricular pacing mode in standard pacemaker population.
OBJECTIVE
Unnecessary right ventricular pacing has deleterious effects and becomes more significant when cumulative percent ventricular pacing (Cum%VP) exceeds 40% of time. The Managed Ventricular Pacing (MVP) mode has been shown to significantly reduce the percent ventricular pacing compared to the DDD/R mode. This study assessed the percent of ventricular pacing in a standard pacemaker population programmed to MVP and for which patients it is possible to achieve a Cum%VP < or = 40%.


RESULTS
Unselected, consecutive patients were implanted with a dual chamber pacemaker with a mean follow-up period of 76 days. The Cum%VP was calculated from device diagnostics between pre-hospital discharge (PHD) and the 1-month post implant visit. The median Cum%VP of 107 patients (age 67.2 +/- 14 years; 53% male) who were programmed to MVP was 3.9%. The median Cum%VP was 1.4% in patients with sinus node disease (SND) and 28.8% in patients with AV block (AVB). Cum%VP < or = 40% was observed in 72% of all patients, in 50% of AVB patients, and in 86% of SND patients.


CONCLUSIONS
The MVP mode is capable of achieving a low percent of ventricular pacing in a standard pacemaker population with SND and AVB. In addition, 72% of patients in MVP mode demonstrated Cum%VP < or = 40%.
Milasinovic
Goran
G
Clinical Center of Serbia, Belgrade, Serbia and Montenegro. goran_milas@yahoo.com
Tscheliessnigg
Karlheinz
K
Boehmer
Anthonie
A
Vancura
Vladimir
V
Schuchert
Andreas
A
Brandt
Johan
J
Wiggenhorn
Christopher
C
Hofman
Maaike
M
Sperzel
Johannes
J
D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects / Q000379:methods*; D004868:Equipment Failure / Q000706:statistics & numerical data; D005189:False Positive Reactions; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000009:adverse effects; D011446:Prospective Studies; D012307:Risk Factors