barium sulfate

(redirected from barite)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

barium

 (Ba) [bar´e-um]
a chemical element, atomic number 56, atomic weight 137.34. (See Appendix 6.) Ingestion of excessive amounts can be toxic, occasionally resulting in fatal hypokalemia and paralysis.
barium sulfate a water-insoluble salt used as an opaque contrast medium for x-ray examination of the digestive tract.
barium test x-ray examination using a barium mixture to help locate disorders in the esophagus, stomach, duodenum, and small and large intestines. Such conditions as peptic ulcer, benign or malignant tumors, colitis, or enlargement of organs that might be causing pressure on the stomach may be readily identified with the use of barium tests. If perforation exists or is suspected, the barium test should not be administered. It is important to evacuate the barium completely following the study; a mild laxative is usually prescribed for this purpose.

Barium sulfate is a harmless chalky, water-insoluble compound that does not permit x-rays to pass through it. Taken before or during an examination, it causes the intestinal tract to stand out in silhouette when viewed through a fluoroscope or seen on an x-ray film.

Two main types of tests are conducted with the use of barium: the barium meal or barium swallow, for radiologic examination of the upper gastrointestinal tract, and the barium enema for examination of the lower gastrointestinal tract.
Barium test: Barium meal and follow-through. Normal stomach and small bowel. From Aspinall and Taylor-Robinson, 2001.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

bar·i·um sul·fate

given as a suspension orally, rectally, or through a tube, for radiographic demonstration of a part of the gastrointestinal tract. See: enteroclysis, barium enema.
See also: barium meal.
Farlex Partner Medical Dictionary © Farlex 2012

Barium sulfate

A barium compound used during a barium enema to block the passage of x rays during the exam.
Mentioned in: Barium Enema
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Several sectors like paints & coatings, automobile, construction, oil & gas, and other industries are expected to take the global barite market ahead.
In this research the sulphur and Sr-isotope composition of barite mineralization associated with calcite speleothems in Kalana quarry was studied.
[4] described a fundamental mathematical approach (based mainly on the continuum methodology) to examine the sedimentation of barite particles in shear flow of Newtonian fluids; they established a numerical method to solve four partial differential equation-sets describing dynamic barite sag in pipe flow of Newtonian fluids.
Samples of sphalerite (Sp(a) and Sp(b)), dolomite, quartz, calcite, and barite were selected from three hydrothermal stages in the Nanmushu deposit to determine the nature of the fluids associated with mineralization.
Water in the Mangampeta barite mine pit, which is used for irrigation of coconut plantations as well as other agricultural purposes, showed higher concentration of barium (133 ppm), strontium (1,835 ppm), and chromium (19 ppm) on ash weight basis than those elements in coconut water (Prasad & Raghu, 1994).
In terms of both its conceptualisation and its usage, jagalgarin (barite) differs from other stone types.
Paytan's team found that barite spiked globally during the Paleocene-Eocene Thermal Maximum.
China Shen Zhou Mining & Resources Inc (NYSE Amex: SHZ), a company engaged in the exploration, development, mining and processing of fluorite, barite, zinc, copper, and other nonferrous metals in China, has named Hai Hu as its new chief financial officer, effective immediately.
M2 EQUITYBITES-November 5, 2012-Mabwe Minerals Inc to ship barite from Zimbabwe under Master Supplier Agreement(C)2012 M2 COMMUNICATIONS http://www.m2.com
Supply locally or import of 10,000 tons raw barite rocks for delivery via monthly or quarterly shipments.
De C.V., a holder of barite interests in Mexico, and plans to manufacture and sell high-purity barite, used as a weighting agent for drilling fluid in oil and gas excavation.