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A member asked:
I'm on propranolol daily. i noticed when i have ekg done when i take the med my pr interval is under 110 but when i skip it it's 120 (norm) why?
2 doctors weighed in across 2 answers
Not significant: Propanolol can make your pr interval longer, not the other way around, but a small variation in pr interval from 110 to 120 milliseconds is not significant and you should not be worried about it if your ekg otherwise is normal without what is called a delta wave.
Answered 7/21/2013
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Ecg: Pr interval can be rate related and also affected by metabolic factors such as beta receptor status.
Answered 7/21/2013
5k views
Thank
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