Category: R
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Rothera’s test
A test to see if acetone is present in urine, a sign of ketosis which is a complication of diabetes mellitus [After Arthur Cecil Hamel Rothera (1880—1915), biochemist in Melbourne, Australia]. A method of testing urine for the presence of acetone or acetoacetic acid: a sign of diabetes mellitus. Strong ammonia is added to a…
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Rotator
A muscle which makes a limb rotate. A muscle that brings about rotation of a part. The rotatores are small muscles situated deep in the back between adjacent vertebrae. They help to extend and rotate the vertebrae.
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Rot
To decay, to become putrefied. The disintegration of tissue brought upon by the activity of encroaching fungi or bacteria is commonly referred to as a malady characterized by said symptoms.
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Rostral
Like the beak of a bird.
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Roseola infantum
A sudden infection of small children, with fever, swelling of the lymph glands and a rash. It is caused by herpesvirus 6. An infectious, probably viral, disease common in young children, especially those under two years old, involving an abruptly arriving high fever, as high as 105°F, which lasts for four to five days and…
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Rorschach test
The ink blot test, used in psychological diagnosis, where someone is shown a series of blots of ink on paper and is asked to say what each blot reminds him or her of. The answers give information about the person’s psychological state. Personality assessment test consisting of 10 pictures of inkblots that the subject interprets,…
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Roper, Logan and Tierney model
An important model of nursing developed in the UK in 1980. Various factors such as necessary daily tasks, lifespan and health status are used to assess the relative independence of an individual, which the nurse will help them to increase.
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Rooting reflex
The instinct in new babies to turn their heads towards a touch on the cheek or mouth, which is important for breastfeeding. The automatic response of a baby when the cheek is touched or stroked, as with a finger, to turn the head to that side and start sucking; a type of “primitive” reflex found…
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Roof
The top part of a cavity.
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Rongeur
A strong surgical instrument like a pair of pliers, used for cutting bone. A forceps that is used to remove small bone fragments. Powerful biting forceps for cutting tissue, particularly bone. An instrument for removing small amounts of tissue, particularly bone; also called bone nippers. A rongeur is a spring loaded forceps with a sharp…