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Blood Coagul Fibrinolysis ; 32(4): 294-297, 2021 Jun 01.
Article in English | MEDLINE | ID: covidwho-1066464


Factor V inhibitors are a rare cause of life-threatening bleeding. We present a case of an acquired factor V inhibitor likely caused by coronavirus disease 2019 infection. Bleeding was manifested by severe anemia requiring frequent red-cell transfusion, left psoas muscle hematoma, and left retroperitoneal cavity hematoma. Factor V activity was less than 1% and the factor V inhibitor titer was 31.6 Bethesda units. Severe acute respiratory syndrome coronavirus 2 RNA testing of the nasopharynx was positive 2 weeks before presentation and continued to be positive for 30 days. The patient failed treatment with intravenous immunoglobulin and dexamethasone. Three cycles of plasmapheresis with fresh frozen plasma replacement resulted in correction of the bleeding and laboratory coagulopathy. This is the first reported case of a factor V inhibitor in a coronavirus disease 2019 patient and suggests that plasmapheresis may be a successful treatment strategy.

Autoantibodies/biosynthesis , COVID-19/blood , Factor V/immunology , Hemorrhagic Disorders/etiology , SARS-CoV-2 , Aged, 80 and over , Anemia/etiology , Anemia/therapy , Antibodies, Viral/blood , Antibody Specificity , Autoantibodies/immunology , COVID-19/complications , COVID-19/diagnosis , COVID-19/immunology , Combined Modality Therapy , Comorbidity , Delayed Diagnosis , Dexamethasone/therapeutic use , Erythrocyte Transfusion , Factor V/antagonists & inhibitors , Female , Hematoma/etiology , Hemorrhagic Disorders/drug therapy , Hemorrhagic Disorders/therapy , Humans , Immunoglobulins, Intravenous/therapeutic use , Lupus Coagulation Inhibitor/blood , Octreotide/therapeutic use , Plasma , Plasmapheresis , SARS-CoV-2/immunology , Vitamin K/therapeutic use
Conserv Biol ; 34(6): 1331-1332, 2020 12.
Article in English | MEDLINE | ID: covidwho-843291


Article impact statement: COVID-19 has demonstrated the need to optimize research activity, convey the gravity of loss, and reevaluate merit in conservation science.

COVID-19 , Coronavirus Infections , Pneumonia, Viral , Science , Conservation of Natural Resources , Coronavirus Infections/epidemiology , Humans , Pandemics , Pneumonia, Viral/epidemiology , SARS-CoV-2
Cureus ; 12(7): e9083, 2020 Jul 09.
Article in English | MEDLINE | ID: covidwho-647381


A 73-year-old female with past medical history of essential hypertension, hyperlipidemia, seasonal allergies, and chronic back pain presented to the hospital with complaints of headaches, fevers, fatigue, generalized body aches, shortness of breath, and diarrhea. Initial complete blood count was remarkable for leukopenia with an absolute lymph count of 0.60 K/µL and severe thrombocytopenia (platelet count < 3 K/µL). She was tested for COVID-19 via nasopharyngeal swab polymerase chain reaction (PCR) testing and found positive. Additional labs showed an elevated D-dimer, C-reactive protein, fibrinogen, and lactate dehydrogenase. Vitamin B12 and folate levels were obtained and found to be normal. Peripheral smear showed no schistocytes or additional hematologic abnormalities apart from thrombocytopenia. The patient was transfused one unit of platelets with no improvement in platelet count. Fibrinogen count was obtained and found in normal range at 458 mg/dL. Prothrombin time (PT), activated partial thromboplastin time (aPTT), and international normalized ratio (INR) were all found to be normal. Immune thrombocytopenia purpura (ITP) was suspected and intravenous immunoglobulin (IVIG) was administered at a dose of 1 g/kg/day for two doses. By day 4, the patient had marked response to treatment with platelet recovery to 105 K/µL and subsequently discharged by day 5 with complete resolution of symptoms and platelet count of 146 K/µL. Twenty-eight days after discharge, she presented to hematology clinic with platelet count of 8 K/µL. Repeat nasopharyngeal swab PCR COVID testing was negative and she was treated with IVIG and pulse dexamethasone with prompt response, confirming suspicion of underlying, undiagnosed ITP prior to COVID infection.