P-R interval

P-R interval definition - medical

P-R interval

noun
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® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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