A member asked:

I have wpw & am on lopressor (metoprolol tartrate) to control svt. my pr interval is usually 110-116. since i started lopressor (metoprolol tartrate) it is 90-100 or less. whys it even shorter?

A doctor has provided 1 answer

Pr: The bypass tract conduction may be facilitated by the beta blocker.

Answered 10/27/2013

4.8k views

Thank

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