Apr 6, 2014
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Hollow tubes, usually made of rubber or plastic, used for passing into various organs of the body, either for investigational purposes or to give some form of treatment. They are used under strict sterile conditions.

Cardiac catheters are introduced through a vein in the arm and passed into the heart in order to diagnose some of the more obscure forms of congenital heart disease, and often as a preliminary to operating on the heart.

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Medical Dictionary

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