p-r interval

Medical Dictionary

P-R interval n.
The time elapsing between the beginning of the P wave and the beginning of the QRS complex in an electrocardiogram; it corresponds to the atriocarotid interval of the venous pulse.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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