One problem: The various drugs used have side effects, and don't cut the incidence of sudden death very much.(you have fewer episodes but the death rate isn't lower).LINK.
a good summary can be found here:link,,
I suspect in the future, implantable pacemaker with defrillator will be used more often.... right now it's usually used in people with advanced heart disease. And they are expensive.
link They are implanting them more and more: A relative, age 82, is getting one next month.
But remember, I haven't practiced in the USA for ten years so I might be behind in the latest news./
Thank you so much.