@713j
Probably a good question for your EP. I have heart failure and a EF of 20. I had a AICD/Pacemaker implanted back in 2006. My EF remains stable now. I have had shocks over the years but medications and pacemaker adjustments have corrected it.

What I can say and again not a medical professional is that I was having a lot of PVCs. My pulse rate had dropped to 40s after started Entresto and Coreg. I started having a lot more PVCs and EP and Pace Clinic raised my pacing to 60. It improved my PVCs. Then we raised it to 70 beats a minute to experiment and they were reduced again. It has been at 70 bpm now for several years.

So to answer your question from a patient my pacemaker did reduct my PVCs by racing my pacing rate. Regarding tachycardia's. A pacing of heart to get regular rympthm is important. What I can tell you is my AICD/Pacemaker monitors my heart rmypthm (spell). If my rympthm gets to high (tachycarida) my pacemaker will try to pace me out of it. If that does not work it will supply a shock to bring rymphm back.

Having it also addresses your mental stress and worry. Knowing your heart is being paced for a regular rympthm is stress releaving. Knowing it tachycardia gets out of control it will correc with higher pacing and/or shocks.

I am a big believer that the stress and worry about PVCs, PACs, and tachycardia is a cause and effect and addressing that stress goes a long way to corrective and succesful treatments.