Heart Failure Support Group
Heart failure is a condition that can result from any structural or functional cardiac disorder that impairs the ability of the heart to fill with or pump a sufficient amount of blood throughout the body. It is often undiagnosed due to a lack of a universally agreed definition and difficulties in diagnosis, particularly when the condition is considered "mild."
Well - assuming that the numbers he quoted are actually his EF - and that he is currently at an EF of 30 - he is at risk .
I remember when the doctor thought my EF was at 30 he told me I could die any minute and he wanted to insert a defibrollator into my chest.
I guess you should do something to get him active.
hugs, Raoul