In the increased pacing threshold (IPT) group, the pacing threshold
increased by ≥0.5 V/0.24 msec within 1 month after implantation, and in
the stable pacing threshold (SPT) group, the pacing threshold increased
by <0.5 V/0.24 msec within 1 month after implantation.
*P-values<0.05 were considered statistically significant.†Puncture site lymphatic leakage.‡Pericardial effusion.