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a portion of food or foods taken at some particular and usually stated or fixed time.
barium meal gastrointestinal series.
congregate m's a group nutritional program for socially isolated individuals whose nutritional problems are related more to access and to lack of social stimulation than to mechanical eating difficulties.
test meal see test meal.
bar·i·um meal(BaM) (bārē-ŭm mēl)
Oral administration of barium sulfate suspension for radiographic study of the upper gastrointestinal tract.
barium mealAn X-ray examination enhanced by the use of the insoluble barium sulphate, usually in the form of a liquid suspension. Barium is opaque to X rays and will thus reveal the internal structure of a hollow organ. Barium X rays are useful in the investigation of any part of the digestive tract. They can reveal out-pouchings from the lower part of the throat (PHARYNGEAL POUCH), narrowing (stenosis or stricture) of the gullet (oesophagus), swallowing disorders, HIATUS HERNIA, stomach and duodenal ulcers, tumours or POLYPS anywhere in the bowel but especially in the colon, abnormal pouches (diverticula) in the colon, CROHN'S DISEASE (regional ileitis) and COELIAC DISEASE.
a chemical element, atomic number 56, atomic weight 137.34, symbol Ba. See Table 6. Soluble salts, e.g. the chloride and the carbonate, are toxic.
barium burger, barium meal
a mixture of barium and solid food, used as a contrast medium in radiographic studies of the esophagus, instead of liquid barium mixtures.
used as a rodenticide. The baits are attractive to dogs. Clinical signs include salivation, convulsions and paralysis.
preliminary experiments showing that diets deficient in barium fed to rats and guinea pigs depress growth have been neither invalidated nor confirmed.
a dilute (5 to 20%) suspension of barium is introduced into a colon that has been emptied by starvation and previous enema.
barium-impregnated polyethylene spheres (BIPS)
radio-opaque markers used to demonstrate intestinal obstruction and motility disorders; the spheres are given orally and their movement can be tracked radiographically.
a strong (usually 100%) suspension of barium sulfate is administered to an animal which has been starved for at least 12 hours.
x-ray examination using a barium mixture to help locate disorders in the esophagus, stomach, duodenum, and the small and large intestines. Called also barium test.
a water-insoluble salt used as an opaque contrast medium for x-ray examination of the digestive tract.
a small amount of barium paste or liquid administered orally and observed radiographically or by fluoroscopy for examination of swallowing and esophageal function.