Cannon a waves: Difference between revisions

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This wave will cause [[pulse|pulsation]] in the neck and abdomen.
This wave will cause [[pulse|pulsation]] in the neck and abdomen.


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==Causes==
==Causes==

Revision as of 02:35, 4 September 2012

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: Cannon A waves; Cannon atrial waves; Canon a waves

Overview

Canon a waves are waves seen occasionally in the jugular vein of humans with certain cardiac arrhythmias. When the atria and ventricles contract simultaneously, or when the right atrium contracts against a closed tricuspid valve, the blood will be pushed against the AV valve, and a very large retrograde pressure wave travels up the jugular vein[1][2].

Diagnosis

Symptoms

The following may be present:

Physical Examination

Neck

This wave will cause pulsation in the neck and abdomen.

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Causes

References

  1. "cannon A waves - definition of cannon A waves in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia".
  2. "Pacemaker Syndrome: Overview - eMedicine Cardiology".
  3. Sam, Amir H. (2010). Rapid Medicine. Wiley-Blackwell. ISBN 1-4051-8323-3. Unknown parameter |coauthors= ignored (help)
  4. Sam, Amir H. (2010). Rapid Medicine. Wiley-Blackwell. ISBN 1-4051-8323-3. Unknown parameter |coauthors= ignored (help)


References