A cardiac dysrhythmia in which heartbeats occur in groups of four, usually composed of one sinus beat followed by three extrasystolic beats.
This Word Of The Day Quiz Is Far From Thersitical
Have you mastered the meaning of phronesis? How about plethoric? Take the quiz on the words from the week of February 17 to 23 to find out.
Question 1 of 7
Words nearby quadrigeminal rhythm
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.