Dear Terry
Based on the numbers alone, the low heart rate is not a concern. If you have symptoms of lightheadedness, dizziness, or fatigue associated with the low heart, then it is too low. The blunted response of your heart rate to exercise is an expected effect of the medication. Instead of increasing the dose of medication, another option would be to add a second medication.
I hope this has been useful. I wish you the best of luck. Feel free to write back.
Information provided here is for general purposes only. Specific questions should be addressed to your own doctor. If you would like to make an appointment at the Cleveland Clinic Heart Center, please call 1-800-CCF-CARE or inquire online by using the Heart Center website at www.ccf.org/heartcenter. The Heart Center website contains a directory of the cardiology staff that can be used to select the physician best suited to address your cardiac problem.