What can cause the heart rate to drop during exertion?

[dawnb70]

I am an LPN in a LTC facility. I have a resident whose resting heart rate is always >100, but after PT her heart rate is dropping into the 80s. What could be the cause of this? I've reported it to her doctor, but he doesn't seem concerned. I feel it warrants further testing. I need some advise please!

[papawjohn]

Hey Dawn!!

Repeat, your Pt's are fortunate in having someone like yourself to care for them. Good on ya for looking into this.

And BTW: I bet Dilt XR is a generic extended release 'diltiazem' (which is 'cardizem').

Papaw John