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B-mode sonography in acute renal failure.

W Charles O'Neill1

  • 1Department of Medicine, Renal Division, Emory University School of Medicine, Atlanta, Ga 30322, USA. woneill@emory.edu

Nephron. Clinical Practice
|March 18, 2006
PubMed
Summary

B-mode sonography effectively rules out urinary obstruction in acute renal failure cases. It is highly recommended for patients with likely obstruction, unclear renal failure causes, solitary kidneys, or kidney transplants.

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Area of Science:

  • Nephrology
  • Radiology
  • Medical Imaging

Background:

  • Acute renal failure (ARF) necessitates prompt diagnosis and management.
  • Urinary obstruction is a common and reversible cause of ARF.
  • Non-invasive imaging modalities are crucial for diagnosing ARF etiologies.

Purpose of the Study:

  • To evaluate the utility of B-mode sonography in diagnosing the cause of acute renal failure.
  • To determine the specific patient populations where sonography is most beneficial for ARF evaluation.

Main Methods:

  • Retrospective review of B-mode sonography findings in patients with acute renal failure.
  • Correlation of sonographic findings with clinical presentation and laboratory data.
  • Assessment of sonography's effectiveness in identifying urinary tract obstruction.

Main Results:

  • B-mode sonography is a highly sensitive and cost-effective tool for detecting urinary obstruction.
  • Sonography is indicated in patients with suspected obstruction, unexplained ARF, solitary kidneys, and transplant recipients.
  • Sonographic findings in acute tubular necrosis are nonspecific and difficult to interpret without baseline data.

Conclusions:

  • B-mode sonography is invaluable for excluding urinary obstruction in ARF.
  • Its application should be broadened in specific high-risk patient groups.
  • Sonography has limited utility in diagnosing other causes of ARF, such as acute tubular necrosis.

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