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Topic: Oliguria


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In the News (Sun 5 Jul 09)

  
  Select Oliguria
Oliguria is usually defined as a urine output of less than 400 ml in 24 hours, equating to an hourly output of 15–20 ml or less.
Oliguria can be considered as having three possible causes – reduced renal perfusion, intrinsic disease of the kidneys, or obstruction to the outflow of urine.
Oliguria related to ACE inhibitors is often associated with a disproportionately elevated plasma potassium: there is loss of angiotensin-stimulated aldosterone secretion from the adrenals, and hence reduced potassium secretion in the distal nephron.
www.rcsed.ac.uk /eselect/cc8.htm   (6081 words)

  
 eMedicine - Oliguria : Article by Prasad Devarajan, MD   (Site not responding. Last check: 2007-10-13)
At onset, oliguria is frequently acute, it is often the earliest sign of impaired renal function, and it poses a diagnostic and management challenge to the clinician.
Oliguria with palpable kidneys during infancy suggests renal vein thrombosis, polycystic kidneys, multicystic dysplasia, or hydronephrosis.
Once oliguria is established, mannitol may precipitate congestive heart failure; the risk of ototoxicity from furosemide and adverse hemodynamic changes from dopamine are significant.
www.emedicine.com /ped/topic1637.htm   (6428 words)

  
 How the body conserves volume
Oliguria means “little urine” and is conventionally considered to be <400ml/day.
Oliguria is an important clinical sign: it is one of the best measures, for a number of reasons, of end organ perfusion and circulating volume.
Oliguria is a sensitive indicator of volume depletion.
www.ccmtutorials.com /renal/pathphys/page_04.htm   (911 words)

  
 Student BMJ July 1999
(1) Prerenal oliguria is characterised by a reduction in renal blood flow causing intravascular volume depletion.
(2) Intrinsic acute renal oliguria implies damage to the kidneys themselves and is usually the result of acute tubular necrosis or acute interstitial nephritis.
Oliguria can herald renal failure and therefore is an emergency requiring a quick response.
www.studentbmj.com /back_issues/0799/data/0799ed3.htm   (1695 words)

  
 [No title]
The resulting oliguria causes an increase in plasma NPN which can be misleading, because a patient with persistent hypotension may have central nervous system signs which resemble those of uremia at a later stage.
A deficit of plasma calcium is of cardinal importance during oliguria, because calcium is a specific antagonist of potassium, and hyperpotassemia and hypocalcemia occur at the same time.
Since, in oliguria, plasma calcium regularly is depressed by a rise in plasma phosphate at the same time that plasma potassium rises, the electrocardiogram of the untreated patient bears little relationship to the plasma level of potassium.
history.amedd.army.mil /booksdocs/korea/recad1/ch5-4.htm   (7344 words)

  
 Oliguria
Oliguria (urine output less than 20 ml/hr) may be found in any patient due to cardiology, nephrology, urology, endocrinology, medical or surgical disorders.
The etiology of oliguria may result by neurohormonal, pre-, post or intra-renal disorder.
Oliguria cause fluid and electrolyte imbalance with effect in the heart, lungs, central nervous system, skin and gastrointestinal.
www.geocities.com /baddarni/Oliguria.html   (1777 words)

  
 Oliguria - Wikipedia, the free encyclopedia
The decreased production of urine may be a sign of dehydration, renal failure or urinary obstruction/urinary retention.
Oliguria is defined as a urine output that is less than 1 mL/kg/h in infants, less than 0.5 mL/kg/h in children, and less than 400 mL/day in adults.
Oliguria, when defined as less than 1 mL/kg/h, in infants is not considered to be a reliable sign of renal failure.
en.wikipedia.org /wiki/Oliguria   (238 words)

  
 Oliguria
Oliguria and anuria are the decreased or absent production of urine, respectively.
Oliguria is defined as a urine output that is less than 1 mL/kg/h in infants, less than 0.5 mL/kg/h in children, and less than 400 mL/d in adults.
Postrenal: as a consequence of obstruction of the urine flow
www.mrsci.com /Sign-Medicine/Oliguria.php   (88 words)

  
 Oliguria
If you have a better definition for Oliguria than the one presented here, please let us know by making use of the suggest a term option.
This definition of Oliguria may be disputed by other professionals.
Our attempt is to provide easy definitions on Oliguria and any other medical topic for the public at large.
www.medicalglossary.net /Oliguria.htm   (160 words)

  
 [No title]
During the course of management of war casualties with oliguria, it was noted that inorganic phosphorus concentration in plasma rose to higher levels earlier in those patients with necrotic muscle wounds.
This relationship should not obtain unless severe oliguria is present; otherwise the phosphate which is released from muscle would be excreted in the urine.
In oliguria secondary to trauma and shock, however, there appears to be less generalized catabolic response which causes a release of phosphate from tissues, and an increase in the P:NPN ratio should prompt the surgeon to re-examine all wounds of muscle.
history.amedd.army.mil /booksdocs/korea/Vol4-BattleCasualties/Chapter7.htm   (2211 words)

  
 The MSDS HyperGlossary: Oliguria
Oliguria is a lower than normal volume of urine (less than or equal to 0.5 ml/kg/hr).
Oliguria is a symptom of several potentially life-threatening conditions.
Oliguria is usually a symptom of a much more serious condition.
www.ilpi.com /msds/ref/oliguria.html   (262 words)

  
 Dopamine vs no treatment to prevent renal dysfunction in indomethacin-treated preterm newborn infants
The two most frequent side effects of indomethacin therapy are oliguria (Barrington 1994) and decrease in cerebral blood flow (Mosca 1997).
Seri 1988 is a study in which infants received dopamine on the basis of clinical condition: controls did not require dopamine, whereas patients in the treatment group received dopamine for edema, moderate oliguria, poor peripheral perfusion and/or mild systemic hypotension.
The incidence of oliguria (urine output < 1 ml/kg/hour) in Baenziger 1999 was not shown to be affected by dopamine administration (RR 0.73, CI 0.35, 1.54).
www.nichd.nih.gov /cochrane/Barrington2/Barrington.htm   (3691 words)

  
 Acute renal failure: oliguria: mannitol may improve urine output.
Patients with oliguria who failed to respond to mannitol were more likely to die (NNF = 2 for unknown).
In patients with oliguria who responded to mannitol, the mean increase in urine output was 80 ml/hour.
Mean duration of oliguria prior to mannitol was 35 hours, and mean urea concentration was 57 mmol/l.
www.eboncall.org /CATs/1674.htm   (415 words)

  
 oliguria
Grep of noun oliguria oliguria Overview of noun oliguria The noun oliguria has 2 senses (no senses from tagged texts) 1.
oliguria -- (abnormally small production of urine; can be a symptom of kidney disease or obstruction of the urinary tract or edema or an imbalance of fluids and electrolytes in the body) 2.
oliguria -- (production of an abnormally small amount of urine) Overview of noun oliguria The noun oliguria has 2 senses (no senses from tagged texts) 1.
www.beetfoundation.com /words/o/alt.oliguria.html   (186 words)

  
 [No title]
Oliguria in an alert patient that is associated with normal pre-existing renal function and cardiovascular stability, is unlikely to require intervention unless it persists for four hours or more.
If oliguria is associated with other symptoms or signs suggestive of fluid depletion, it should be treated initially with a fluid challenge.
In all cases of oliguria it is important to exclude obstruction of the urinary tract or urinary catheter.
www.utmem.edu /obgyn/student_pres/Oliguria.ppt   (1132 words)

  
 Medical Dictionary: Oliguria - WrongDiagnosis.com
Oliguria (medical condition): Urine output of less than 500mls in a 24hour period.
Oliguria: abnormally small production of urine; can be a symptom of kidney disease or obstruction of the urinary tract or edema or an imbalance of fluids and electrolytes in the body
The following list attempts to classify Oliguria into categories where each line is subset of the next.
www.wrongdiagnosis.com /medical/oliguria.htm   (225 words)

  
 Dr. Rose's Peripheral Brain--RENAL FAILURE
Oliguria = urinary output insufficient to sustain life (e.g.
In a cohort study of 552 patients with acute renal failure, after adjustment for confounding variables, diuretic use as ass'd with sig.
In a meta-analysis of 9 randomized studies involving 849 pts with or at risk for acute renal failure, furosemide vs. placebo was not associated with any sig.
staff.washington.edu /momus/PB/azotemia.htm   (935 words)

  
 Associated Conditions of Oliguria - WrongDiagnosis.com
Whereas the complications are caused by Oliguria, and underlying causes may be causes of Oliguria, the following list shows associated conditions that simply appear with higher frequency in people who have Oliguria.
People with Oliguria may be more likely to get a condition on the list of associated conditions, or the reverse may be true, or both.
Whether they are causes of, caused by, or simply coincidentally related to Oliguria is not always clear.
www.wrongdiagnosis.com /o/oliguria/assoc.htm   (230 words)

  
 HEMOLYTIC UREMIC SYNDROME - CLINICAL ASPECTS AND OUTCOME OF AN OUTBREAK: REPORT OF 28 CASES:15(2)
All patients had oliguria or anuria; 16 were oliguric and 12 anuric.
The mean duration of oliguria was 10 days (range two to 30 days) and mean duration of anuria 16 days (range seven to 42 days).
The incidence of oliguria or anuria in our study was comparable to the recent report of HUS in Canadian children.10
www.kfshrc.edu.sa /annals/152/94035ar.html   (2143 words)

  
 Causes of Oliguria - WrongDiagnosis.com
The following drugs, medications, substances or toxins are some of the possible causes of Oliguria as a symptom.
Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments.
Conditions listing Oliguria as a symptom may also be potential underlying causes of Oliguria.
www.wrongdiagnosis.com /o/oliguria/causes.htm   (220 words)

  
 BestBETs: Is ibuprofen or indomethacin better for medical cl...
Independent predictors of oliguria were INDO treatment, high frequency ventilation, increased serum creatinine days 1-3, and lower ductul shunt velocity
In addition, three studies showed a significant increase in oliguria among patients treated with intravenous indomethacin, and two studies showed a significant increase in serum creatinine.
Patients receiving intravenous ibuprofen have a smaller rise in serum creatinine, and are less likely to develop oliguria (NNT = 6) than those receiving intravenous indomethacin.
www.bestbets.org /cgi-bin/bets.pl?record=00385   (810 words)

  
 Diuresis and Diuretics
Define diuresis and oliguria and describe the physiologic causes of both.
You would elicit this from a patient's history.
Increased urea recycling in the Loop of Henle
sprojects.mmi.mcgill.ca /nephrology/presentation/presentation3.htm   (360 words)

  
 Renal failure: Acute & chronic
Differentiate the pathogenesis underlying ARF caused by prerenal functional, intrarenal structural, postrenal obstructive.
Discuss the 3 pathophysiologic explanations for the oliguria in ARF: tubular obstruction, back leak, altered renal flow.
Oliguria = < 400 ml per 24 hours; 40% of failure is nonoliguric
www.csun.edu /~meh20426/302AVrenalfail.html   (882 words)

  
 Oliguria   (Site not responding. Last check: 2007-10-13)
If a person is suffering from hypothermia, replace damp clothing if necessary, wrap up well and give high energy foods and hot drinks to restore body temperature to normal.
Oliguria, usually defined as the excretion of less than 300 mL of urine per day, may be 'physiological', as in patients with hypotension and hypovolaemia, where urine is maximally concentrated in an attempt to conserve water.
Blockage in the tubes that carry urine from the kidney
www.total-health-care.com /illness/oliguria.htm   (220 words)

  
 eMedicine - Oliguria : Article Excerpt by: Prasad Devarajan, MD   (Site not responding. Last check: 2007-10-13)
Synonyms, Key Words, and Related Terms: oliguria, acute renal failure, ARF, prerenal failure, small amount of urine, kidney disease, obstruction of the urinary tract, impaired renal function
Please click here to view the full topic text: Oliguria
The content of this Website is not influenced by sponsors.
www.emedicine.com /ped/byname/oliguria.htm   (684 words)

  
 Wrong diagnosis of Underlying Causes of Oliguria - WrongDiagnosis.com
Conditions listing Oliguria as a symptom may also be potential underlying conditions.
With a diagnosis of Oliguria, it is important to consider whether there is an underlying condition causing Oliguria.
These are other medical conditions that may possibly cause Oliguria.
www.wrongdiagnosis.com /o/oliguria/underly.htm   (187 words)

  
 NEJM -- Acute Oliguria
Saulo Klahr, M.D., and Steven B. Miller, M.D. Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.
Steven B. Miller, M.D. Acute oliguria (excretion of less than 400 ml of urine per day)
acute oliguria is a sudden and severe decrease in the
content.nejm.org /cgi/content/short/338/10/671?query=nextarrow   (257 words)

  
 Acute renal failure: oliguria: sustained high doses of furosemide was of uncertain benefit.
Acute renal failure: oliguria: sustained high doses of furosemide was of uncertain benefit.
Patients with acute renal failure and oliguria who were given high doses of furosemide, were not clearly less likely to fail to diurese nor did their mortality rates differ from those not given furosemide.
Kleinknecht D, Geneval D, Gonzalez-Duque LA, et al: Furosemide in acute oliguric renal failure: a controlled trial.
www.eboncall.org /CATs/1694.htm   (279 words)

  
 Renal failure - Wikipedia, the free encyclopedia
End-stage renal failure (ESRF) is the ultimate consequence, in which case dialysis is generally required until a donor for a renal transplant is found.
Acute renal failure (ARF) is, as the name implies, a rapidly progressive loss of renal function, generally characterised by oliguria (decreased urine production, quantified as less than 400 mL per day in adults,
Starting around 1847 this term was used to describe reduced urine output, now known as oliguria, that was thought to be caused by the urine mixing with the blood instead of being voided through the urethra.
en.wikipedia.org /wiki/Renal_failure   (362 words)

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