Estimated battery longevity
The estimated mean battery longevity was significantly shorter with the MPP strategy (MPP-ON; n = 11) than with the SPP strategy (MPP-OFF; n = 21), resulting in mean battery longevity estimates of 6.3±2.0 years and 8.1±2.3 years, respectively (P = 0.03). The mean LV pacing output was 2.7±0.6 V/0.5 ms with the SPP configuration and was similar to that with the MPP configuration (LV1, 2.5±0.7 V/0.5 ms; LV2, 2.8±0.7). At 45 days post-implantation, the RV and right atrial thresholds and the percentage of atrial pacing and biventricular pacing were similar in both groups. Additionally, no differences were found based on the device type or manufacturer (Table S5 ). No defibrillator shocks occurred among the entire sample during the 45-day follow-up period.