Gabrielle deVeber, M.D., Maureen Andrew, M.D., Coleen Adams, M.B., Bruce Bjornson, M.D., Frances Booth, M.D., David J. Buckley, M.B., Ch.B., Carol S. Camfield, M.D., Michele David, M.D., Peter Humphreys, M.D., Pierre Langevin, M.D., E. Athen MacDonald, M.D., Brandon Meaney, M.D., Michael Shevell, M.D., C.M., D. Barry Sinclair, M.D., Jerome Yager, M.D., Jane Gillett, M.D., for the Canadian Pediatric Ischemic Stroke Study Group
Background Cerebral sinovenous thrombosis in children is a seriousdisorder, and information is needed about its prevention andtreatment.
Methods The Canadian Pediatric Ischemic Stroke Registry wasinitiated in 1992 at the 16 pediatric tertiary care centersin Canada. Children (newborn to 18 years of age) with symptomsand radiographic confirmation of sinovenous thrombosis wereincluded.
Results During the first six years of the registry, 160 consecutivechildren with sinovenous thrombosis were enrolled, and the incidenceof the disorder was 0.67 case per 100,000 children per year.Neonates were most commonly affected. Fifty-eight percent ofthe children had seizures, 76 percent had diffuse neurologicsigns, and 42 percent had focal neurologic signs. Risk factorsincluded head and neck disorders (in 29 percent), acute systemicillnesses (in 54 percent), chronic systemic diseases (in 36percent), and prothrombotic states (in 41 percent). Venous infarctsoccurred in 41 percent of the children. Fifty-three percentof the children received antithrombotic agents. Neurologic deficitswere present in 38 percent of the children, and 8 percent died;half the deaths were due to sinovenous thrombosis. Predictorsof adverse neurologic outcomes were seizures at presentationand venous infarcts.
Conclusions Sinovenous thrombosis in children affects primarilyneonates and results in neurologic impairment or death in approximatelyhalf the cases. The occurrence of venous infarcts or seizuresportends a poor outcome.
Source Information
From the Divisions of Neurology (G.D.) and HematologyOncology (M.A.), the Population Health Sciences Program, Hospital for Sick Children, Toronto; the Department of Pediatrics, University of Toronto, Toronto (G.D., M.A.); the Department of Pediatrics, University of Calgary, Calgary, Alta. (C.A.); the Department of Pediatrics, University of British Columbia, Vancouver (B.B.); the Department of Pediatrics, University of Manitoba, Winnipeg (F.B.); the Department of Pediatrics, Memorial University, St. John's, Nfld. (D.J.B.); the Department of Pediatrics, Dalhousie University, Halifax, N.S. (C.S.C.); the Department of HematologyOncology, Université de Montreal, Montreal (M.D.); the Department of Pediatrics, University of Ottawa, Ottawa, Ont. (P.H.); the Department of Pediatric Neurology, Centre Hospitalier de l'Université Laval, Sainte-Foy, Quebec, Que. (P.L.); the Department of Pediatrics, Queen's University, Kingston, Ont. (E.A.M.); and the Departments of Pediatrics and Clinical Neurosciences, University of Western Ontario, London (J.G.) all in Canada.
Other authors were Brandon Meaney, M.D. (Department of Pediatrics, McMaster University, Hamilton, Ont.), Michael Shevell, M.D., C.M. (Department of Neurology, Pediatrics, and Neurosurgery, McGill University, Montreal), D. Barry Sinclair, M.D. (Department of Pediatrics, University of Alberta, Edmonton), and Jerome Yager, M.D. (Department of Pediatrics, University of Saskatchewan, Saskatoon).
Address reprint requests to Dr. deVeber at the Division of Neurology, Hospital for Sick Children, 555 University Ave., Toronto, ON M5G 1X8, Canada.
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