atrial fibrillation

Medical Dictionary

atrial fibrillation n.
fibrillation in which the normal rhythmical contractions of the cardiac atria are replaced by rapid irregular twitchings of the muscular wall that cause the ventricles to respond irregularly. Also called auricular fibrillation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Explore Dictionary.com
Previous Definition: atrial extrasystole
Next Definition: atrial flutter
More from Thesaurus.com
Synonyms and Antonyms for atrial fibrillation
More from Reference.com
Search for articles containing atrial fibrillation
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature