Urine output - decreased

Answer 1

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.

Common 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.

Call your health care provider if

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 health care provider's office

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.

Answer 2

Definition

Decreased urine output means that you produce less than 500 milliliters of urine in 24 hours.

Alternative Names

Oliguria

Considerations

A large decrease in urine output may be a sign of a serious, or even life-threatening condition. However, urine output can usually be restored if you get medical treatment right away.

Common Causes

• Blood loss
• Dehydrationwhen you do not drink enough fluids and have vomiting, diarrhea, or fever
• Medications such as anticholinergics, diuretics, and some antibiotics
• Severe infection or any other medical condition that leads to shock
• Total urinary tract blockage, such as from an enlarged prostate

Home Care

Drink as much fluid as your health care provider recommends. Your health care provider may also ask you to measure the amount of urine you produce.

Call your health care provider if

Contact your health care provider if you:

• Notice that you are producing less urine than usual
• Are vomiting, have diarrhea, or have a high fever and cannot get enough fluids by mouth
• Produce less urine and have dizziness, light-headedness, or a fast pulse

What to expect at your health care provider's office

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 quickly become worse?
• Quality
  • How much do you drink each day?
  • How much urine do you produce each day?
  • Does drinking more increase the amount of urine you produce?
  • What color is the urine?
• Factors that make it worse
  • Have you had a fever?
  • Have you had diarrhea?
  • Have you been vomiting? With or without nausea?
  • Are you less thirsty?
  • What other symptoms do you have?
• Other
  • What medications do you take?
  • Do you have any allergies?
  • Do you drink enough fluids?
• Medical history
  • Have you had any recent injuries, such as burns?
  • Have you been sick?
  • Do you have a history of a kidney or bladder problem?

Tests that may be done include:

• Abdominal ultrasound
• Blood tests for electrolytes, kidney function, and blood count
• CT scan of the abdomen (done without contrast dye if your kidney function is impaired)
• Renal scan
• 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.

Molotoris BA. Acute kidney injury. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 122.

Reviewed By

Review Date: 09/16/2011

David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Scott Miller, MD, Urologist in private practice in Atlanta, Georgia. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.