Hemolysis, Elevated Liver Enzymes, Low Platelets Syndrome Superimposed on Hemolytic Uremic Syndrome

Abstract

A pregnancy complicated by typical hemolytic uremic syndrome (HUS) and hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome is reported. At 20 weeks of gestation, a case of HUS was diagnosed, with Shiga toxin-producing Escherichia coli identified. Plasmapheresis allowed continuation of the pregnancy for 5 weeks. Superimposed preeclampsia and HELLP syndrome were diagnosed after the establishment of nephrotic range proteinuria, hypertension and recurrence of hemolysis. This is a singular case, as it demonstrates that HELLP syndrome can superimpose upon HUS, a fact that can impact future research on reproductive immunology. It also reminds clinicians that the overlapping of clinical and laboratory findings in HELLP syndrome makes the diagnosis of other thrombotic microangiopathies during pregnancy a clinical challenge.

Resumo

Descreve-se um caso clínico em que às 20 semanas de gestação é diagnosticada síndrome hemolítica-urêmica com isolamento de Escherichia coli produtora de toxina Shiga. A terapêutica com plasmaferese permitiu a manutenção da gravidez ao longo de 5 semanas. O surgimento de proteinúria nefrótica, hipertensão e recorrência de hemólise conduziu ao diagnóstico de sobreposição de pré-eclâmpsia e síndrome HELLP. Este caso é singular, pois demonstra que a síndrome HELLP pode se sobrepor a uma síndrome hemolítica-urêmica, um fato que pode influenciar futuras investigações no âmbito de imunologia reprodutiva. Reforça-se, ainda, que o diagnóstico de outras microangiopatias trombóticas durante a gestação é um desafio clínico ocasionado pela sobreposição de manifestações clínicas e laboratoriais com a síndrome HELLP.

Keywords

HELLP syndrome - hemolytic uremic syndrome - thrombotic microangiopathies

Palavras-chave

síndrome HELLP - síndrome hemolítica-urêmica - microangiopatias trombóticas

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