Category: S

Incubation of a sample of feces in nutrient material to determine growth and types of infection-causing microorganisms.  

An X-ray procedure, generally done in the operating room during neurosurgery, helpful in guiding the insertion of a needle into a desired location in the brain.  

A section of a tracing taken during an electrocardiogram that provides diagnostic information about the activity of the heart’s ventricles.  

Incubation of a sample of sputum in nutrient material to determine the growth and type of infection-causing microorganisms.  

An X-ray study of the spleen, liver, and blood vessels, done after injection of contrast medium into the spleen. Radiography of the spleen and portal vein after injection of a radiopaque contrast medium into the spleen.  

A scan of the spleen after injection of radioactive red blood cells, done to detect a tumor, injury, or other abnormality.  

A normal constituent of urine, measured to check adrenal function, kidney function, acid-base balance, and other conditions.  

The level of sodium in sweat, elevated in fibrocystic disease.  

A normal blood constituent, essential in transmitting nerve impulses, and in maintaining water metabolism and acid-base balance.  

A condition in which a person stops breathing for short periods at intervals while sleeping. This may be due to a respiratory tract abnormality, obesity, heavy snoring, and other causes. A group of sleep disorders involving repeated episodes when a person stops breathing while asleep. Sleep apnea syndrome may be caused by a momentary blockage…