Acute Kidney Injury in a Case of Multiorgan Failure, Disseminated Intravascular Coagulation and Purpura Fulminans

Introduction: Purpura fulminans (PF) is a life-threatening syndrome consisting of Disseminated Intravascular Coagulation (DIC), thrombotic occlusion of smalland medium-sized blood vessels with skin necrosis. Although there are few studies in the literature, only a minority of them discuss renal manifestations. Case Report: We present a case of a 57-year-old Caucasian female with acute kidney injury (AKI) in the setting of multiorgan failure (MOF), DIC and PF. She presented with fever, exudative drainage from her port site, and skin changes concerning for bacteremia. Empiric antibiotics were started after blood, urine, and wound cultures were obtained. None of the cultures grew any organisms. Fever resolved after port removal. She exhibited thrombocytopenia, leukopenia, and neutropenia. Urinalysis showed hyaline casts and a fractional excretion of urea (FeUrea) ≤35% indicating a pre-renal state. Her hospital course was complicated by atrial fibrillation, acute hypoxic respiratory failure requiring mechanical ventilation, and hypovolemic shock requiring pressor support. Further, complicated by multiorgan failure including nonoliguric AKI and heart failure with reduced ejection fraction (HFrEF) of ≤65%. Acute skin findings included dusky, purple macules and patches involving all digits of both hands as well as gangrenous changes on the face and toes. It prompted further investigation by Hematology and Dermatology. Skin biopsy showed early leukocytoclastic vasculitis changes. Her laboratory markers were suggestive of DIC and Purpura Fulminans.