Here is an idea for you. See if you can make an appointment with a cardiac electrophysiologist. These are the doctors who can help regulate the settings on your pm. They may not engage in ‘rehab,’ but they can check your breathing and suggest changes to how your pm is set up.

When my pm was implanted the doctor who performed the surgery would not see me to discuss the problems I was still experiencing. I finally found another electrophysiologist who was willing to work with me.