World Library  
Flag as Inappropriate
Email this Article

Cannon A waves

Article Id: WHEBN0021724429
Reproduction Date:

Title: Cannon A waves  
Author: World Heritage Encyclopedia
Language: English
Subject: Pacemaker syndrome, Levine scale, Heart click, Continuous murmurs, Split S2
Collection: Cardiology, Medical Signs
Publisher: World Heritage Encyclopedia

Cannon A waves

Cannon A waves, or cannon atrial waves, are waves seen occasionally in the jugular vein of humans with certain cardiac arrhythmias. When the atria and ventricles contract simultaneously, the blood will be pushed against the AV valve, and a very large pressure wave runs up the vein.[1][2] It is associated with heart block, in particular third-degree (complete) heart block.[3] It is also seen in pulmonary hypertension.[3] Cannon A waves may also be seen in ventricular tachycardia due to the inherent AV dissociation of the arrhythmia.

This wave will cause pulsation in the neck and abdomen, headache, cough, and jaw pain.[2]


  1. ^ "cannon A waves - definition of cannon A waves in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia.". 
  2. ^ a b "Pacemaker Syndrome: Overview - eMedicine Cardiology". 
  3. ^ a b Sam, Amir H.; James T.H. Teo (2010).  

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.