Category: V

A patch (skin) test to determine the presence of tuberculosis or previous exposure to the disease.  

A test of the body’s capacity to react to a given dose of vitamin A. Failure of serum levels to rise to normal within 4-5 hours indicates inadequate intestinal fat absorption.  

Use of a series of stimuli during an electroencephalogram (EEG) to determine, with the help of computer averaging, any optic nerve deficiency in patients with multiple sclerosis. A test in which the brain’s electrical activity in response to visual stimuli (e.g., a flashing checkerboard) is recorded by an electroencephalograph and analyzed by computer. Demyelination results…

Tests done on the eyes to determine whether a person is near or farsighted. A visual assessment method used to evaluate the clarity of vision, commonly conducted by identifying objects and/or letters displayed on a visual chart, is referred to as an eye examination.  

Antibodies that render a virus harmless.  

An infection of the breathing passages caused by a virus.  

A cholesterol fraction which, when elevated, may predispose to hardening of the arteries and heart disease.  

Excessively rapid heartbeat (arrhythmia) originating in the ventricle, which causes low blood pressure, shock, build-up of fluid in the lungs, and sometimes, palpitations. This condition occurs primarily in people who have serious heart disease, and must be treated as an emergency. Several drugs are used to treat this problem. Cardioversion is employed to stabilize the…

An abnormal heart sound heard in a person with serious heart disease and a rapid heartbeat of 100 or more per minute.  

A procedure in which the patient breathes in radioactive gas and the lungs are scanned for areas that don’t receive air, or other abnormalities.