@openheart2020 Hi and welcome.to connect, I too originally had a fast heartbeat issue and it was similar to your situation that I had fluid built up around my Heart and Lungs causing trouble breathing. I was also on Amiodarone for many years to control my fast heartbeat.

But I also am wondering in your case what your general outlook is for your Heart. In my case my heart became enlarged which caused my issue to need a pacemaker and long term care. It sounds like yours was just a temporary condition if they want to stop the Amiodarone. So I would ask some questions about the overall health of my heart. Let us know and maybe I can help. I will say that even tho Amiodarone does a great job for rapid heartbeat it has issues if used for a long time, im talking years I was on it for about 10 years.
Also there are a few conditions that have rapid heartbeats mine was Ventricular tachycardia and another I have heard of is Afib. 2 totally different issues. So maybe check and see what condition brought this on.
I hope you have a Blessed Day
Dana