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Hemolytic-uremic syndrome - Overview

Alternative Names

HUS

Definition of Hemolytic-uremic syndrome:

Hemolytic-uremic syndrome (HUS) is a disorder that usually occurs when an infection in the digestive system produces toxic substances that destroy red blood cells, causing kidney injury.

Causes, incidence, and risk factors:

Hemolytic-uremic syndrome (HUS) often occurs after a gastrointestinal infection with E. coli bacteria (Escherichia coli O157:H7). However, the condition has also been linked to other gastrointestinal infections, including shigella and salmonella, as well as nongastrointestinal infections.

HUS is most common in children. It is the most common cause of acute kidney failure in children. Several large outbreaks in 1992 and 1993 were linked to undercooked hamburger meat contaminated with E. coli.

Other risk factors for HUS are unknown, although some cases are due to a familial form of the disease. HUS may occur with a variety of other diseases and infections, and after taking certain medications such as mitomycin C or ticlopidine.

HUS is more complicated in adults. It is similar to another disease called thrombotic thrombocytopenic purpura (TTP).

  • Reviewed last on: 3/28/2010
  • David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

McMillan R. Hemorrhagic disorders: abnormalities of platelet and vascular function. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 179.

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