alexa Morphological Variations of the Internal Jugular Venous Valve
ISSN: 2161-0940

Anatomy & Physiology: Current Research
Open Access

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Research Article

Morphological Variations of the Internal Jugular Venous Valve

Satoshi Furukawa*, Lisa Wingenfeld, Akari Takaya, Tokiko Nakagawa, Ikuo Sakaguchi and Katsuji Nishi

Department of Legal Medicine, Shiga University of Medical Science, Setatsukinowa, Otsu City, Japan

*Corresponding Author:
Satoshi Furukawa, MD
Department of Legal Medicine
Shiga University of Medical Science
Setatsukinowa, Otsu City, Shiga 520-2192, Japan
Tel: +81-77-548-2202
E-mail: [email protected]

Received Date: February 27, 2012; Accepted Date: September 21, 2012; Published Date: September 23, 2012

Citation: Furukawa S, Wingenfeld L, Takaya A, Nakagawa T, Sakaguchi I, et al. (2012) Morphological Variations of the Internal Jugular Venous Valve. Anat Physiol 2:108. doi: 10.4172/2161-0940.1000108

Copyright: © 2012 Furukawa S. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The internal jugular vein is a popular route for central venous catheter placement. The internal jugular veins are also important venous vessels for returning blood from the brain. The internal jugular vein valves are the only venous valves between the heart and the brain and incompetence may result in retrograde cerebral venous flow during coughing and other precipitating activities. We investigated 60 cadavers from legal autopsies to observe the morphological variations of the internal jugular venous valve. The position of the internal jugular venous valve in situ varied among the subjects, ranging from being directly posterior to the clavicle to a position 3 cm further inferior and 2.5 cm further superior. Valves were present bilaterally in 58 (96.7%) subjects and unilaterally in 2 (3.3%) subjects. Bicuspid valves were present in 72.0% of the valves we examined. As the internal jugular vein is increasingly being used for vascular access, knowledge about and evaluation of these valves may be useful in clinical practice to avoid damage during percutaneous procedures.

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