Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «U»:
Urination, painful: See: Dysuria....
Urine: Liquid waste. The urine is a clear,
transparent fluid. It normally has an amber color. The average amount
of urine excreted in 24 hours is from 40 to 60 ounces (about 1,200
cubic centimeters). Chemically, the urine is mainly an aqueous
(watery) solution of salt (sodium chloride) and subst...
Urine blood: Blood in the urine. Also called hematuria.
Gross hematuria refers to blood that
is so plentiful in the urine that the blood is visible grossly, with just the
Gross hematuria is in contrast to microhematuria in which the blood is visible only under a microscope: there is s...
Urine hemoglobin: The presence of free hemoglobin in the urine, an abnormal finding, that may make the urine look dark. Hemoglobin in the urine is termed hemoglobinuria.
Hemoglobin is the protein in the red blood cells which carries oxygen from the lungs to the tissues of the body and returns carb...
Urine infection in children
Urinary infection in child: See: Urinary tract infection in children....
Urine pH: A measure of the acidity or alkalinity of urine.
The pH of any fluid is the measure of the hydrogen ion (H-) concentration. A pH of 7 is neutral. The lower the pH, the more acidic the urine.
A variety of factors affect urine pH including what is ingested, vomiting, diarrhea, lung function...
UROD: Uroporphyrinogen decarboxylase, an enzyme required for the synthesis of heme, a part of the hemoglobin molecule. UROD catalyses the decarboxylation of uroporphyrinogen III to coproporphyrinogen III by the conversion of four acetic acid groups to four methyl groups.
The gene encoding UROD is i...
UROD deficiency: Lack of the enzyme uroporphyrinogen decarboxylase (UROD) which is the basic cause of porphyria cutanea tarda (PCT), the late skin form of porphyria. PCT is a genetic photosensitive (light-sensitive) skin disease with onset in adult life with a large amount of a substance called urop...
Urogastrone: See: EGF....
Urogenital: Relating to both the urinary system,
and to the interior and exterior genitalia....
Urography: A method for examining the structure
and functionality of urinary system. A special dye is
injected, and X-ray machines record its progress through
the urinary tract. Urography is particularly useful for
discovering cysts or other internal blockages....
Urolithiasis: The process of forming stones
in the kidney, bladder, and/or urethra (urinary tract).
Kidney stones are a common cause of blood in the urine and pain in
the abdomen, flank, or groin. Kidney stones occur in 1 in 20 people
at some time in their life.
The development of the stones is...
Urological surgeon: A physician who specializes in diseases of the urinary organs in females and the urinary tract and sex organs in males. Also called a urologist....
Urologist: A physician who specializes in diseases of the urinary organs in females and the urinary tract and sex organs in males. Also called a urological surgeon....
Uroporphyrinogen decarboxylase: See: UROD....