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Venous hum
A murmur heard on auscultation over the larger veins of the neck. The sound heard when listening over a vein.
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Venous cutdown
Surgical incision in a vein to place a catheter to permit intravenous administration of fluids or drugs. It is used in patients with vascular collapse when gaining percutaneous access to the circulation is difficult; however, this procedure is usually tried only when subclavian, jugular, or femoral access cannot be established.
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Venous admixture
A mixture of venous and arterial blood.
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Venostat
An appliance for performing venous compression.
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Venospasm
Contraction of a vein, which may follow infusion of a cold or irritating substance into the vein.
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Venosity
A condition in which there is an excess of venous blood in a part, causing venous congestion. A state where there is an accumulation of venous blood in a specific body part. Abundantly provided with blood vessels or venous circulation.
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Venoperitoneostomy
A one-way valve shunt that connects the peritoneum with the internal jugular or subclavian vein, permitting the escape of ascitic fluid into the venous circulation.
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Venomous snake
In the U.S., any of the pit vipers such as the copperhead, water moccasin, and rattlesnake of the family Crotalidae, and, in the southern U.S, the coral snakes (genus Micrurus) , especially M. fulvius and M. euryxanthus. Venomous snakes have a worldwide distribution. Specific names of snakes in the general vocabulary are listed under the…
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Venomosalivary
Secreting saliva with venom in it. Producing toxic saliva.
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Snake venom
The poisonous secretion of the labial glands of certain snakes. Venoms contain proteins, chiefly toxins and enzymes, which are responsible for their toxicity. They are classified as neurocytolysins, hemolysins, hemocoagulins, proteolysins, and cytolysins on the basis of the effects produced.
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