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Urine output - decreased

Definition

Decreased urine output is defined as producing less than 500 milliliters of urine in 24 hours.

Alternative Names

Oliguria

Considerations

Although a significant decrease in urine output may indicate a serious, even life-threatening condition, adequate urine output can be restored with prompt medical treatment.

Causes

• Dehydration due to vomiting, diarrhea, or fever, with a lack of adequate fluid intake
• Total urinary tract obstruction, such as from an enlarged prostate
• Severe infection or any other medical condition leading to shock
• Use of certain medications such as anticholinergics, methotrexate, and diuretics

Home Care

Follow prescribed fluid regimens and measure urine output as directed.

When to Contact a Medical Professional

Contact your health care provider if you have:

• A noticeable and consistent decrease in urine output
• Vomiting , diarrhea, or high fever and are unable to replace fluids by mouth
• A decrease in urine output associated with dizziness, lightheadedness, or rapid pulse

What to Expect at Your Office Visit

The health care provider will perform a physical exam and ask questions about your medical history and symptoms, including:

• Time pattern
  • When did this begin?
  • Did it occur suddenly?
  • Has it rapidly become worse?
• Quality
  • How much do you drink each day?
  • Does drinking more increase your urine output?
  • How much urine do you produce each day?
  • What color is the urine?
• Aggravating factors
  • Has there been fever?
  • Has there been diarrhea?
  • Has there been vomiting? With or without nausea?
  • Is thirst decreased?
  • What other symptoms do you have?
• Other
  • What medications do you take?
  • Do you have any allergies?
  • Do you have access to adequate fluids?
• Medical history
  • Have you had any recent injuries such as burns?
  • Have you been sick?
  • Do you have a history of a problem with your kidneys or bladder?

Tests that may be done include:

• Blood studies to monitor electrolytes and kidney function
• CT (cat) scan of the abdomen
• Intravenous pyelogram (IVP)
• Renal scan
• Abdominal ultrasound
• Urine tests, including tests for infection

References

Gerber GS, Brendler CB. Evaluation of the urologic patient: History, physical examination, and the urinalysis. In: Wein AJ, ed. Campbell-Walsh Urology. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 3.

Molitoris BA. Acute kidney injury. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 121.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.