Dear sir/ madam
Thanks for writing to us.
I do not understand why diltiazem
was given to convert AFib. Diltiazem only controls the ventricular rate when given for AF. it does not convert it to normal sinus rhythm
. diltiazem has been nearly washed out of your body if last dose was given 2 days back and you are not on any oral diltiazem preparation. one possibility is that they have given you some other rate lowering drug, which is causing your rate to be still low.
Why your heart rate
was higher in AM, 1. you may still be having AF which can behave in this fashion (low/high heart rates intermittently) 2. it could be simply a reactionary transient rise in HR which commonly occurs if you are woken up suddenly.
i hope i have given you some insight into your problem.