Pacing threshold varies during the 24 hours in children (Fig. 2). This variability is low, not exceeding 0.2 V (0.03 ± 0.01 V), so it is unlikely to affect pacemaker programming. There were no ...

The DFT is defined as the lowest delivered energy that will convert VF to a supraventricular rhythm. An increase in DFT may lead to failure of device therapy, and as a result may have severe ...