Thrombotic Microangiopathy Following Arabian Saw-Scaled Viper ( Echis coloratus) Bite: Case Report

摘要

Patient: Male, 50-year-old Final Diagnosis: Snake bite induce thromotic microangiopathy Symptoms: Coagulopathy ? hemolysis ? renal failure ? snake bite ? thrombocytopenia Medication: — Clinical Procedure: Plasma exchange Specialty: Hematology Objective: Unusual clinical course Background: Consumption coagulopathy post envenomation is one the most common complications after a snakebite. It occurs secondary to activation of a coagulation cascade by snake venom and could be followed by a syndrome consistent with thrombotic microangiopathy. The efficacy of plasma exchange for the treatment of thrombotic microangiopathy post envenomation is a matter of debate. Case report: We reported the case of a 50-year-old male who had Arabian saw-scaled viper envenomation. He developed venom induced coagulopathy that improved within 24 hours of antivenom therapy. He subsequently developed micro-angiopathic hemolytic anemia, thrombocytopenia, and renal failure that was consistent with thrombotic microangiopathy. The patient was treated by plasma exchange and hemodialysis. He made a full recovery and was discharged after 4 weeks. Conclusions: This case report supports plasmapheresis as an option for management of a patient who develops thrombotic microangiopathy secondary to snake bite, especially those who do not improve with antivenom and supportive therapy.