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Silent cerebral infarcts occur despite regular blood transfusion therapy after first strokes in children with sickle cell disease.
- Source :
-
Blood [Blood] 2011 Jan 20; Vol. 117 (3), pp. 772-9. Date of Electronic Publication: 2010 Oct 12. - Publication Year :
- 2011
-
Abstract
- Children with sickle cell disease (SCD) and strokes receive blood transfusion therapy for secondary stroke prevention; despite this, approximately 20% experience second overt strokes. Given this rate of second overt strokes and the clinical significance of silent cerebral infarcts, we tested the hypothesis that silent cerebral infarcts occur among children with SCD being transfused for secondary stroke prevention. A prospective cohort enrolled children with SCD and overt strokes at 7 academic centers. Magnetic resonance imaging and magnetic resonance angiography of the brain were scheduled approximately every 1 to 2 years; studies were reviewed by a panel of neuroradiologists. Eligibility criteria included regularly scheduled blood transfusion therapy. Forty children were included; mean pretransfusion hemoglobin S concentration was 29%. Progressive cerebral infarcts occurred in 45% (18 of 40 children) while receiving chronic blood transfusion therapy; 7 had second overt strokes and 11 had new silent cerebral infarcts. Worsening cerebral vasculopathy was associated with new cerebral infarction (overt or silent; relative risk = 12.7; 95% confidence interval, 2.65-60.5, P = .001). Children with SCD and overt strokes receiving regular blood transfusion therapy experience silent cerebral infarcts at a higher rate than previously recognized. Additional therapies are needed for secondary stroke prevention in children with SCD.
- Subjects :
- Anemia, Sickle Cell complications
Brain blood supply
Brain pathology
Cerebral Infarction complications
Cerebral Revascularization
Child
Child, Preschool
Cohort Studies
Disease-Free Survival
Humans
Magnetic Resonance Angiography
Magnetic Resonance Imaging
Stroke complications
Time Factors
Anemia, Sickle Cell therapy
Blood Transfusion methods
Cerebral Infarction prevention & control
Stroke prevention & control
Subjects
Details
- Language :
- English
- ISSN :
- 1528-0020
- Volume :
- 117
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Blood
- Publication Type :
- Academic Journal
- Accession number :
- 20940417
- Full Text :
- https://doi.org/10.1182/blood-2010-01-261123