Category: S
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Spica hip cast
A rigid cast of the lower torso extending to one or both of the legs; used for femoral fractures. A cast containing the lower torso and extending to one or both lower extremities. If only one lower extremity is included, it is called a single hip spica; if two are included, it is called a…
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Sphygmus
Pulse or pulsating quality.
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Sphincter of Oddi
A circular muscle in the common bile duct that opens to permit passage of bile and pancreatic secretions into the duodenum. A contracted region at the opening of the common bile duct into the duodenum at the papilla of Vater.
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Spastic athetosis
Constant involuntary writhing motions that are most often due to an extrapyramidal lesion.
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Somnolent
Prolonged drowsiness, sedation, or sleepiness, often the result of disease or medications.
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Slit-lamp examination
Diagnostic procedure to detect abnormalities of the cornea, anterior chamber, iris, or lens using a low-power | microscope (biomicroscope) for magnification with a high-intensity light. A test done on the eyes to determine possible abnormalities of the anterior eye structures.
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Skin traction
Use of elastic wraps, straps, halters, or skin adhesives connected to a pulley and weights, to align a body part following surgery or a fracture.
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Siccant
Agent that removes moisture or promotes dryness of tissue or a body surface.
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Sialolithiasis
A stone formed in the salivary gland which becomes lodged in the duct, blocking the flow of saliva and resulting in painful swelling of the salivary gland, face, or mouth. The presence of stones in the salivary ducts. The development of stones within the ducts or glands of the salivary system.
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Short bowel syndrome
Decreased ability to digest and absorb foods due to reduced length of intestine; this may be the result of congenital defects, infection, or extensive necrotizing enterocolitis. Inadequate absorption of ingested nutrients (especially vitamin B12, macronutrients, sodium, and magnesium) resulting from a surgical procedure in which a considerable length of the intestinal tract has been removed…