Pacing parameters
Pacing parameters were summarized in Table 2. The pacing threshold, R-wave sensing, and pacing impedance were 0.64 ± 0.18 V/0.4ms, 10.3 ± 4.1 mV, and 766.2 ± 150.2 Ω, respectively. The paced QRS duration showed no difference compared to baseline (112.9 ± 13.9ms vs 113.8 ± 29.1ms, P=0.856). The stimulus to left ventricular activation time was 82.6 ± 17.4ms. There were no complications related to the implementation of LBBAP (formation of hematomas, infection, pneumothorax, lead dislocation). The lower rate of the pacemaker was set at 60, 70, or 75 bpm in 19, 8, and 2 patients, respectively.