Sweden: Risk for Intracerebral Hemorrhage May Be Transmissible Via Blood Transfusion

The risk for spontaneous intracerebral hemorrhage (ICH) is increased for patients who receive red blood cell transfusions from donors who later develop multiple spontaneous ICHs, according to a study published in the Sept. 12 issue of the Journal of the American Medical Association.

Jingcheng Zhao, M.D., Ph.D., from Karolinska Institutet in Stockholm, and colleagues conducted a retrospective cohort study using nationwide blood bank and health register data from Sweden (main cohort) and Denmark (validation cohort) including 1,089,370 patients aged 5 to 80 years who had received a red blood cell transfusion (759,858 from Sweden; 329,512 from Denmark), with a median follow-up of 5.8 and 6.1 years, respectively.

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