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Adjunct Immune Globulin for Vaccine-Induced Immune Thrombotic Thrombocytopenia.
Bourguignon, Alex; Arnold, Donald M; Warkentin, Theodore E; Smith, James W; Pannu, Tania; Shrum, Jeffrey M; Al Maqrashi, Zainab A A; Shroff, Anjali; Lessard, Marie-Claude; Blais, Normand; Kelton, John G; Nazy, Ishac.
  • Bourguignon A; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Arnold DM; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Warkentin TE; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Smith JW; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Pannu T; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Shrum JM; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Al Maqrashi ZAA; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Shroff A; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Lessard MC; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Blais N; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Kelton JG; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
  • Nazy I; From the Departments of Medicine (A.B., D.M.A., T.E.W., J.W.S., Z.A.A.A.M., A.S., J.G.K., I.N.) and Pathology and Molecular Medicine (A.B., T.E.W.), Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, the Department of Medicine, Cumming School of Medicine, University of Calgar
N Engl J Med ; 385(8): 720-728, 2021 08 19.
Article in English | MEDLINE | ID: covidwho-1262030
ABSTRACT
The use of high-dose intravenous immune globulin (IVIG) plus anticoagulation is recommended for the treatment of vaccine-induced immune thrombotic thrombocytopenia (VITT), a rare side effect of adenoviral vector vaccines against coronavirus disease 2019 (Covid-19). We describe the response to IVIG therapy in three of the first patients in whom VITT was identified in Canada after the receipt of the ChAdOx1 nCoV-19 vaccine. The patients were between the ages of 63 and 72 years; one was female. At the time of this report, Canada had restricted the use of the ChAdOx1 nCoV-19 vaccine to persons who were 55 years of age or older on the basis of reports that VITT had occurred primarily in younger persons. Two of the patients in our study presented with limb-artery thrombosis; the third had cerebral venous and arterial thrombosis. Variable patterns of serum-induced platelet activation were observed in response to heparin and platelet factor 4 (PF4), indicating the heterogeneity of the manifestations of VITT in serum. After the initiation of IVIG, reduced antibody-induced platelet activation in serum was seen in all three patients. (Funded by the Canadian Institutes of Health Research.).
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Thrombocytopenia / Thrombosis / Immunoglobulins, Intravenous / COVID-19 Vaccines Type of study: Case report Topics: Vaccines Limits: Aged / Female / Humans / Male / Middle aged Language: English Journal: N Engl J Med Year: 2021 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Thrombocytopenia / Thrombosis / Immunoglobulins, Intravenous / COVID-19 Vaccines Type of study: Case report Topics: Vaccines Limits: Aged / Female / Humans / Male / Middle aged Language: English Journal: N Engl J Med Year: 2021 Document Type: Article