Dictionary

ventricle, left The chamber of the heart that receives blood from the left atrium and pumps it out under high pressure to the body via the aorta. See also heart ventricle.

ventricle A chamber of an organ. For example, the four connected cavities in the central portion of the brain are called ventricles.

ventilator A machine that mechanically assists a patient in the exchange of oxygen and carbon dioxide, a process sometimes referred to as artificial respiration.

ventilation 1 The exchange of air between the lungs and the atmosphere so that oxygen is exchanged for carbon dioxide in the alveoli (the tiny air sacs in the lungs). 2 When a person (or persons) airs out their feelings by putting their problems into words.

vent To air one’s feelings by putting problems into words.

venous catheterization The insertion of a tiny tube (catheter) into a peripheral or central vein to deliver fluids or medication. Venous catheterization is the most frequently used method for administration of IV fluids. The most common complication of venous catheterization is infection at the site of the catheter (catheter sepsis).

venous aneurysm A localized widening and bulging of a vein. At the area of a venous aneurysm, the vein wall is weakened and may rupture.

venom A poison, particularly one secreted by an animal. Examples are bee venom, snake venom, scorpion venom, and spider venom. Snake venom is also called venin.

venlafaxine A unique antidepressant drug (brand name: Effexor) that is prescribed to treat depression. Venlafaxine is believed to affect the neurotransmitters serotonin, norepinephrine, and dopamine, but not monoamine oxidase (MAO). Venlafaxine is not usually indicated for use by people with kidney or liver disease, or by those with high blood pressure. Common side effects include…

venereal warts See genital warts.

venereal disease See sexually transmitted disease.

venereal Having to do with sexual contact. For example, a venereal disease is a sexually transmitted disease.