Oliguria causes: Difference between revisions
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The mechanisms causing oliguria can be divided into several categories: | |||
===Prerenal=== | |||
In response to [[hypoperfusion]] of the kidney (e.g. as a result of [[dehydration]] by poor oral intake, [[diarrhea]], massive [[bleeding]] or [[sepsis]]) | |||
===Renal=== | |||
Due to kidney damage (severe [[hypoperfusion]], [[rhabdomyolysis]], [[medication]]) | |||
===Postrenal=== | |||
As a consequence of obstruction of the urine flow (e.g. [[enlarged prostate]], tumor compression urinary outflow, expanding [[hematoma]] or fluid collection) | |||
The decreased production of urine may be a sign of [[dehydration]], [[renal failure]] or [[urinary obstruction]]/[[urinary retention]]. | |||
===Postoperative Oliguria=== | |||
Patients usually have a decrease in urine output after a major operation that may be a normal physiological response to: | |||
* Fluid/blood loss – decreased glomerular filtration rate secondary to [[hypovolemia]] and/or [[hypotension]] | |||
* Response of adrenal cortex to stress -increase in [[aldosterone]] (Na and water retention) and [[antidiuretic hormone]] (ADH) release | |||
===Oliguria in Infants=== | |||
Oliguria, when defined as less than 1 mL/kg/h, in [[infant]]s is not considered to be a reliable sign of renal failure.<ref>{{cite journal | author = Arant B | title = Postnatal development of renal function during the first year of life. | journal = Pediatr Nephrol | volume = 1 | issue = 3 | pages = 308-13 | year = 1987 | id = PMID 3153294}}</ref>==Risk Factors== | |||
Patients having any of the conditions mentioned in the causes are at risk of oliguria. | |||
==Reference== | ==Reference== |
Revision as of 18:18, 11 July 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Mugilan Poongkunran M.B.B.S [2]
Causes
Common Causes
- ACE inhibitors
- Acute renal failure
- Acute tubular necrosis
- Aminoglycosides
- Analgesic nephropathy
- Capillary leak
- Dehydration
- Diarrhoea
- Diuretics
- Interstitial nephritis
- Massive bleeding
- Nephritic syndrome
- Nephrolithiasis
- Nephrotic syndrome
- Neurogenic bladder
- NSAIDs
- Posterior urethral valves
- Postpartum bleeding
- Prostate enlargement
Reference
{Reflist|2}
Causes by Organ System
Causes in Alphabetical Order
The mechanisms causing oliguria can be divided into several categories:
Prerenal
In response to hypoperfusion of the kidney (e.g. as a result of dehydration by poor oral intake, diarrhea, massive bleeding or sepsis)
Renal
Due to kidney damage (severe hypoperfusion, rhabdomyolysis, medication)
Postrenal
As a consequence of obstruction of the urine flow (e.g. enlarged prostate, tumor compression urinary outflow, expanding hematoma or fluid collection)
The decreased production of urine may be a sign of dehydration, renal failure or urinary obstruction/urinary retention.
Postoperative Oliguria
Patients usually have a decrease in urine output after a major operation that may be a normal physiological response to:
- Fluid/blood loss – decreased glomerular filtration rate secondary to hypovolemia and/or hypotension
- Response of adrenal cortex to stress -increase in aldosterone (Na and water retention) and antidiuretic hormone (ADH) release
Oliguria in Infants
Oliguria, when defined as less than 1 mL/kg/h, in infants is not considered to be a reliable sign of renal failure.[1]==Risk Factors== Patients having any of the conditions mentioned in the causes are at risk of oliguria.
Reference
- ↑ Arant B (1987). "Postnatal development of renal function during the first year of life". Pediatr Nephrol. 1 (3): 308–13. PMID 3153294.