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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «V»:

  1. Venereal disease Venereal disease
    Venereal disease: A disease that is contracted and transmitted by sexual contact, caused by microorganisms that survive on the skin or mucus membranes, or that are transmitted via semen, vaginal secretions, or blood during intercourse. Because the genital areas provide a moist, warm environment...
  2. Venereal Disease Research Laboratory test Venereal Disease Research Laboratory test
    Venereal Disease Research Laboratory test: A blood test for syphilis. Venereal Disease Research Laboratory is commonly abbreviated VDRL. A negative ("nonreactive") VDRL is compatible with a person not having syphilis. However, a person may a negative VDRL and still have syphilis since, in the early ...
  3. Venereal wart Venereal wart
    Venereal wart: A wart that is confined primarily to the moist skin of the genitals. These warts are due to viruses belonging to the family of human papilloma viruses (HPVs) which are transmitted through sexual contact. The virus can also be transmitted from mother to baby during childbirth. Most ...
  4. Venin Venin
    Venin: Snake venom (poison)....
  5. Venipuncture Venipuncture
    Venipuncture: The puncture of a vein with a needle to withdraw blood. Also called phlebotomy or, more often, a blood draw....
  6. Venom Venom
    Venom: A poison, particularly one secreted by an animal. For examples, bee venom, snake venom, scorpion venom, and spider venom. Snake venom is also called venin....
  7. Venom, scorpion Venom, scorpion
    Venom, scorpion: The potent poison of the scorpion. A sting can be fatal to a person who is allergic to it. A scorpion is an insect that has an elongated body and a segmented, curved tail tipped with a venomous stinger. Grasping, fingerlike first appendages are other typical features. The toxicity o...
  8. Venomous Venomous
    Venomous: 1. Full of venom. 2. Having venom, like some snakes and insects. 3. By extension, noxious, as a venomous tongue....
  9. Venous aneurysm Venous aneurysm
    Venous aneurysm: A local widening and bulging (an aneurysm) of a vein. As opposed to an arterial aneurysm or a cardiac aneurysm. An aneurysm is a localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is typically a bulge and the wall is weakened a...
  10. Venous catheter, central Venous catheter, central
    Venous catheter, central: See: Catheter, central venous....
  11. Venous catheterization Venous catheterization
    Venous catheterization: See: Catherization, venous....
  12. Venous claudication Venous claudication
    Venous claudication: Limping and/or pain due to inadequate venous drainage, poor return of blood by the veins, from the legs....
  13. Venous line, central Venous line, central
    Venous line, central: A catheter (tube) that is passed through a vein to end up in the thoracic (chest) portion of the vena cava (the large vein returning blood to the heart) or in the right atrium of the heart. Central venous lines have a number of different uses. A central venous line allows co...
  14. Ventilation Ventilation
    Ventilation: The exchange of air between the lungs and the atmosphere so that oxygen can be exchanged for carbon dioxide in the alveoli (the tiny air sacs in the lungs). In pulmonary medicine, a distinction is made between pulmonary and alveolar ventilation. Pulmonary ventilation refers to the tota...
  15. Ventilation, mechanical Ventilation, mechanical
    Ventilation, mechanical: Use of a machine called a ventilator or respirator to improve the exchange of air between the lungs and the atmosphere....