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A member asked:
What contributes to a prolonged or shortened pr interval?
A doctor has provided 1 answer
PR: The PR is conduction atrium to ventricle. Metabolic changes can prolong AV conduction, sometimes anatomic damage can too. PR can be shortened by accessory conduction pathways that bypass the normal anatomy that conducts the impulse atrium to ventricle.
Answered 4/3/2015
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