(FIT)-Module 5 Workshop 8: Device Cases-Poole Case 4 Answer

Video Transcription

Video Summary

The pacemaker is functioning correctly as programmed. It shows normal upper rate behavior, linked to the atrial refractory period, consisting of the AV interval and P-bar. If the atrial rate surpasses the upper tracking rate, pacemaker "winky box" occurs. Further increases can lead to a 2-1 AV block if the rate exceeds the total atrial refractory period (440 milliseconds or 135 bpm in this case). The tracing indicates pacemaker operations at various heart rates, including one-to-one tracking at rest and shifts in patterns, such as "winky box" and 2-1 block as the heart rate rises.

Keywords

pacemaker function

upper rate behavior

atrial refractory period

winky box

2-1 AV block