**7.7 Seventh stage. Programming**

While programming a pacing amplitude, it is necessary to consider a probability of a significant rise in pacing threshold in a subacute period in 10% of cases. Non-selective HBP is a predominant pacing type among the patients and, because of probable lower pacing thresholds for myocardium versus HB, adequate pacing amplitude should be programmed 1.5–2 times higher than the HBP threshold (**Figure 9**). Myocardial capture is reserved as a back-up in case of HBP failure.

While programming an AV delay, the time of conducting potential through HB should be considered (H-V interval on electrogram). AV delay is shortened by the duration of this interval (~ 40–70 ms).

Additional attention should be paid to the hypersensitivity for the far-field atrial signal.
