Gastrointestinal infection-related disseminated intravascular coagulation mimicking Shiga toxin-mediated hemolytic uremic syndrome-implications of classical clinical indexes in making the diagnosis:A case report and literature review  

作　　者：Xiang-Yang Li Yan-Fen Mai Jing Huang Pearl Pai 

机构地区：[1]Department of Nephrology, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, Guangdong Province, China [2]Department of Hematology, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, Guangdong Province, China [3]Department of Medicine, The University of Hong Kong - Queen Mary Hospital, Hong Kong, China

出　　处：《World Journal of Clinical Cases》2019年第13期1660-1670,共11页世界临床病例杂志

摘　　要：BACKGROUND Thrombocytopenia associated with acute kidney injury is a challenging disorder. Thrombotic microangiopathy (TMA) is a potentially life- or organ-threatening syndrome that can be induced by several disorders or medical interventions. There is overlap between the clinical presentation and pathophysiology of thrombotic thrombocytopenia purpura and hemolytic uremic syndrome (HUS), and to a lesser extent, disseminated intravascular coagulation (DIC). We describe a case to illustrate the potential diagnostic difficulty, especially at initial presentation. CASE SUMMARY We reported a case of a 44-year-old woman that presented with diarrhea, thrombocytopenia, schistocytes, elevated serum lactate dehydrogenase (LDH) level and acute kidney injury. While the clinical presentation resembled that of Shiga toxin–induced HUS, the disease course was more consistent with gastrointestinal infection-related DIC. To aid in the accurate diagnosis of TMA and other associated disorders, we have undertaken a review and provided a clear interpretation of some typical biomarkers including schistocytes, LDH and platelet count, coagulation profile and more specific indexes of ADAMTS13, complement profile, and the isolation of Shiga toxin-producing Escherichia coli (commonly referred to as STEC). CONCLUSION The use and correct interpretation of classical indexes of schistocyte, LDH, and platelet count is vital in diagnosing TMA and associated disorders. Understanding the characteristics of these biomarkers in the context of thrombocytopenia purpura, HUS and DIC will facilitate the accurate diagnosis and early initiation of appropriate treatment.BACKGROUND Thrombocytopenia associated with acute kidney injury is a challenging disorder.Thrombotic microangiopathy(TMA)is a potentially life-or organ-threatening syndrome that can be induced by several disorders or medical interventions.There is overlap between the clinical presentation and pathophysiology of thrombotic thrombocytopenia purpura and hemolytic uremic syndrome(HUS),and to a lesser extent,disseminated intravascular coagulation(DIC).We describe a case to illustrate the potential diagnostic difficulty,especially at initial presentation.CASE SUMMARY We reported a case of a 44-year-old woman that presented with diarrhea,thrombocytopenia,schistocytes,elevated serum lactate dehydrogenase(LDH)level and acute kidney injury.While the clinical presentation resembled that of Shiga toxin-induced HUS,the disease course was more consistent with gastrointestinal infection-related DIC.To aid in the accurate diagnosis of TMA and other associated disorders,we have undertaken a review and provided a clear interpretation of some typical biomarkers including schistocytes,LDH and platelet count,coagulation profile and more specific indexes of ADAMTS13,complement profile,and the isolation of Shiga toxin-producing Escherichia coli(commonly referred to as STEC)CONCL USION The use and correct interpretation of classical indexes of schistocyte,LDH,and platelet count is vital in diagnosing TMA and associated disorders.Understanding the characteristics of these biomarkers in the context of thrombocytopenia purpura,HUS and DIC will facilitate the accurate diagnosis and early initiation of appropriate treatment.

关 键 词：THROMBOTIC MICROANGIOPATHY THROMBOTIC THROMBOCYTOPENIC PURPURA HEMOLYTIC UREMIC syndrome Schistocyte Lactate dehydrogenase Thrombocytopenia Case report 

分 类 号：R[医药卫生]