hello .... N Welcome ....
Treatment of Rheumatic heart disease
is nicely done by ur physician.
Regarding heart rate
, between 60 to 100 is totally normal.
Some time we can use beta blocker
in place Of Channel Sr 120. With beta blockers some time we can control heart rate in a better way.
U should check for regular Inr Test.
So, good luck, dont worry n continue with medication