Post-dysenteric hemolytic uremic syndrome in Bulawayo, Zimbabwe

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Abstract
An outbreak of dysentery in Zimbabwe was associated with a high mortality, especially in children who developed hemolytic uremic syndrome (HUS). To examine the causes of high mortality from HUS and to suggest measures that could reduce the case fatality rate, clinical and laboratory features of 91 children with dysentery were reviewed. Of these, 14 developed HUS; their findings were compared with age-matched controls with dysentery only. Persistent alteration of consciousness after rehydration, pallor, and oliguria were early clinical indicators of HUS. Leukocytosis and leukemoid reaction, microhematuria, and non-resolving hyponatremia distinguished children with HUS from those with dysentery. While Shigella dysenteriae type I was responsible for the dysentery outbreak in the community, most stool cultures of children with HUS were negative. Mortality from HUS was high. Late recognition of HUS and a lack of peritoneal dialysis could have contributed to the fatal outcome in some cases. Early recognition of HUS through close observation of children with dysentery and appropriate laboratory investigations with referral to a hospital, where peritoneal dialysis is available, should improve the outcome.

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