Given youve been smoking 36 years, its possible you're exhibiting signs of tachy-brady syndrome.
Had your tachycardia returned at all? As in do you experience brief moments of tachycardia followed by periods of bradycardia?
How severe these things are really require one to have the printouts of your ekgs and monitoring results, as not all bradycardias are created equal.
Assuming your bradycardia is a sinus bradycardia and we go with possible tachy brady syndrome, severity is somewhat severe if untreated.
The condition is sort of an early warning sign for sick sinus syndrome, which is an extremely common reason why older folks get pacemakers.
That may sound intimidating but getting a pacemaker isn't necessarily a super risky procedure, and once you have one you get to live without symptoms. We honestly implant and maintenance so many of them that most electrophysiologists can perform it just as easily as they make coffee in the morning.
In the short term you probably don't need to be concerned with going to sleep and not waking up in the morning or anything that tragic. The timeline for diagnosis and treatment is pretty good.
This is all assuming of course that it is indeed tachy brady syndrome.. Which requires a much more detailed history, set of testing and a physical evaluation that of course is impossible to give on a message board, so please do take this with a grain of salt. By no means should this post constitute a diagnosis or guide your actions in any way.
P.s. dont !ever! Stop medications that involve your heart or blood pressure without consulting your cardiologist. Just as a blanket rule, please, its very dangerous.. Just make the phone call first.