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anuria
Anuria means nonpassage of urine, in practice is defined as passage of less than 100〔Harrison's Principles of Internal Medicine, 19E PAGE 292〕 milliliters of urine in a day.〔(【引用サイトリンク】title=SUNY Stony Brook Pathology Department HBP310 Inflammation )〕 Anuria is often caused by failure in the function of kidneys. It may also occur because of some severe obstruction like kidney stones or tumours. It may occur with end stage renal disease. It is a more extreme reduction than oliguria, sometimes called anuresis.
==Causes==
Failure of kidney function, which can have multiple causes including medications or toxins (e.g., antifreeze, cephalosporins, ACEIs); diabetes; high blood pressure. Stones or tumours in the urinary tract can also cause it by creating an obstruction to urinary flow. High blood calcium, oxalate, or uric acid, can contribute to the risk of stone formation. In males, an enlarged prostate gland is a common cause of obstructive anuria.
Acute anuria, where the decline in urine production occurs quickly, is usually a sign of obstruction or acute renal failure. Acute renal failure can be caused by factors not related to the kidney, such as heart failure, mercury poisoning, infection, and other conditions that cause the kidney to be deprived of blood flow.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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