Category: U
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Unloader knee brace
A brace that produces a valgus force on the knee to reduce compressive forces on the medial articular surfaces. It is used to treat patients with deformity and pain caused by osteoarthritis of the knee.
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Unit of blood
Approx. 1 pint (473 ml) of blood, the usual amount used in adult transfusion.
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Uterine bleeding
Bleeding from the uterus. Physiological bleeding via the vagina occurs in normal menstruation. Abnormal forms include excessive menstrual flow (hypermenorrhea, menorrhagia) or too frequent menstruation (poly-menorrhea). Non-menstrual bleeding is called metrorrhagia. Pseudo-menstrual or withdrawal bleeding may occur following estrogen therapy. Breakthrough bleeding is the term used for intermenstrual bleeding that sometimes occurs in women who…
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Unilateral facial atrophy
Progressive atrophy of one side of the facial tissues.
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Urethral atresia
Absence or closure of the urethral orifice or canal.
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Unstable asthma
An increase in asthmatic symptoms during the past 4 weeks.
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Uterine appendage
The ovaries, fallopian tubes, and uterine ligaments.
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Uterotubal anastomosis
Anastomosis between the uterus and fallopian tube.
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Ureteroureteral anastomosis
Anastomosis between two parts of the same ureter.
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uremic amblyopia
Dimness or loss of vision during a uremic attack.