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Doctors' Answers to "Frequently Asked Questions" - Pulse Rate
Answer: 65-90 would be the usual range. Average is probably in the 70-75 range. As to exercising, the max that one should sustain is 140, depending on your preconditioning. A conditioned athlete can sustain a higher rate, but is tougher to get to.
High Pulse Rate [posted 8/12/98]
Answer: You are taking a huge dosage of lanoxin. If you haven't had your level checked, do it today. This is probably a toxic dosage of lanoxin and the cause of the arrhythmias. I have never treated anyone with 0.5 mg of lanoxin in 20 years.