Percent ventricular pacing with managed ventricular pacing mode in standard pacemaker population

Aims: Unnecessary right ventricular pacing has deleterious effectsand becomes more significant when cumulative percent ventricularpacing (Cum%VP) exceeds 40% of time. The Managed VentricularPacing (MVP) mode has been shown to significantly reduce thepercent ventricular pacing compared to the DDD/R mode. Thisstudy assessed the percent of ventricular pacing in a standardpacemaker population programmed to MVP and for which patientsit is possible to achieve a Cum%VP 40%. Methods and results: Unselected, consecutive patients were implanted with a dualchamber pacemaker with a mean follow-up period of 76 days. TheCum%VP was calculated from device diagnostics between pre-hospitaldischarge (PHD) and the 1-month post implant visit. The medianCum%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 patientswith AV block (AVB). Cum%VP 40% was observed in 72% of allpatients, in 50% of AVB patients, and in 86% of SND patients. Conclusion: The MVP mode is capable of achieving a low percent of ventricularpacing in a standard pacemaker population with SND and AVB.In addition, 72% of patients in MVP mode demonstrated Cum%VP 40%.