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