I just had a prostate cancer operation and started getting very serious episodes of fast heart beat, up to 180bpm. The longest was 2 hrs. Had 4 serious episodes requiring emergency room care for 2. All episodes occur while sleeping.
I solved the problem. (1) I walk 1 mile per day to build up my heart. (2) The straw method: I take a straw, pinch the end partially, take a deep breath, and blow slowly blow into the straw and keep blowing. This stops my fast heart beat in less than a minute. Previously, during another episode, I used the straw, but held it closed at the end, so no air could get out. That was a no-no and did not work at all. It is very important for me to expel air against the narrowed straw channel. For some reason, this works for me. I am experiencing way less episodes.
A cardiologist prescribed atenlol, but this drug made me dizzy and weak. I stopped the drug. Before my operation, I experienced one episode per two months. My goal is to have no episodes or one every 3 months, lasting no longer than 1 minute, using the straw method.