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Oliguria or hypouresis (both names from roots meaning "not enough urine") is the low output of urine. In humans, it is clinically classified as an output more than 80 ml/day but less than 400ml/day.〔Boon et al, Davidson's Principles & Practice of Medicine (20th Ed), p475〕 The decreased output of urine may be a sign of dehydration, kidney failure, hypovolemic shock, HHNS hyperosmolar Hyperglycemic Nonketotic Syndrome, multiple organ dysfunction syndrome, urinary obstruction/urinary retention, DKA, pre-eclampsia, and urinary tract infections, among other conditions. The most extreme type of oliguria is called anuria, which represents an absence of urine, clinically classified as below 100ml/day.〔 ==Definition== Oliguria is defined as a urine output that is less than 1 mL/kg/h in infants,〔 (Free Full Text ).〕 less than 0.5 mL/kg/h in children,〔 and less than 400 mL〔 or 500 mL〔(Merck manuals > Oliguria ) Last full review/revision March 2009 by Soumitra R. Eachempati〕 per 24h in adults - this equals 17 or 21 mL/hour. For example, in an adult weighing 70 kg it equals 0.24 or 0.3 mL/hour/kg. Alternatively, however, the value of 0.5 mL/kg/h is commonly used to define oliguria in adults as well.〔 Olig- (or oligo-) is a Greek prefix meaning small or few.〔http://biology.about.com/od/prefixesandsuffixeso/g/blo3.htm〕 Anuria is defined as less than 100mL urine output per day. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oliguria」の詳細全文を読む スポンサード リンク
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