I had an artificial mitral valve installed in 1990. Then put on warfarin with no problems.
In 2006, I began to have heart pains and x rays showed a blocked artery. A stent was installed and my warfarin dosage was upped.
I still had one little pain and another x ray showed a small artery plugged. they said not to mess with it as it would soon stretch out and be OK.
Have had no problems since.
I always felt forced exercises from Jr high school till 1990 was the cause of my problems. It was.
I SHOULD ADD, In 2006, when I started having heart pains it felt like someone was stabbing me in the heart with an ice pick.
The doctor said it was probably just heartburn or indigestion, so nothing was done except giving me “nitro tablets”. The pains did not go away.
A look at the family history showed several ancestors died of “acute indigestion.”
I now bet they all died of heart attacks caused by blocked arteries.
SO, A WARNING! If you suddenly start having what feels like stabs in the heart and they say “heartburn”, get another opinion with x rays and dyes fast! It just might not be heartburn but an actual blocked artery.