<s>[INST] have 93 year old female has two stents placed about 10 days ago today heart rate is 170 and is taking Diltiazem CD 120mg daily.  Is this a reaction to the stent insertions?  I am a geriatric pharmacotherapist and saw the patient last Thursday.  Your comments would be appreciated. [/INST] Welcome at HCM    I have gone through your query and being your physician i completely understand your health  concerns.for how long u are suffering from it? any other associated problem? like diabetes or hypertension?     In my opinion , after coronary stenting the heart rate is still greater than the normal,, it should not be greater than 100. you need to consult your CARDIOLOGIST so that appropriate change in medications can be done in time    meanwhile stay calm and continue with ur medications..get well soon Hope your query is adequately addressed if you still have any feel free to ask   RegardsDr Saad Sultan </s>