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  • Title: Low cerebral blood flow velocity and head circumference in infants with severe hypoxic ischemic encephalopathy and poor outcome.
    Author: Ilves P, Lintrop M, Talvik I, Muug K, Maipuu L, Metsvaht T.
    Journal: Acta Paediatr; 2009 Mar; 98(3):459-65. PubMed ID: 19016665.
    Abstract:
    AIMS: To evaluate long-term changes in cerebral blood flow velocity (CBFV) and head circumference in asphyxiated infants. METHODS: CBFV was measured in 83 asphyxiated and 115 healthy term infants in anterior and middle cerebral, basilar and internal carotid artery (ICA) up to the age of 60-149 days. The psychomotor development and head circumference was followed for 18 months. RESULTS. Mean CBFV was increased (p < 0.05) during the first days after asphyxia in infants with severe hypoxic-ischemic encephalopathy (HIE) (n = 25) compared to control group or infants with mild to moderate HIE (n = 58) with maximum values found at the age of 36-71.9 h: in ICA (mean [95% CI]) 31.2 (25.5-36.6) cm/s in severe HIE infants compared to 13.0 (12.2-13.9) cm/s in controls. Decreased (p < 0.0001) mean CBFV developed in severe HIE infants by the age of 21-59 days: in ICA 14.1 (11.5-16.8) cm/s compared to 22.9 (21.4-24.4) cm/s in controls. Infants with severe HIE had similar mean height but lower head circumferences compared to controls (p < 0.05) at the age of 21-59 days. CONCLUSION: The high mean CBFV found in infants with severe HIE during the first days after asphyxia is temporary and low CBFV and head circumference develops by the age of 21-59 days.
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