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  • Title: Influence of premature rupture of membrane on the cerebral blood flow in low-birth-weight infant after the delivery.
    Author: Fukuda S, Yokoi K, Kitajima K, Tsunoda Y, Hayashi N, Shimizu S, Yoshida T, Hamajima N, Watanabe I, Goto H.
    Journal: Brain Dev; 2010 Sep; 32(8):631-5. PubMed ID: 19864095.
    Abstract:
    Cerebral white matter injury, usually called periventricular leukomalacia (PVL), is the most common form of injury to preterm infants that is associated with adverse motor and cognitive outcomes. Intrauterine infection may be an important etiological factor in PVL, and premature rupture of the membranes (PROM) can be identified antepartum. In order to investigate the pathophysiology of cerebral white matter injury induced by PROM, the cerebral blood flow (CBF) of the internal carotid artery and the vertebral artery was measured by neck ultrasonography. The CBF was determined in 84 low-birth-weight infants with gestational ages ranging from 24 to 35 weeks, including 71 infants without PROM and 13 infants with PROM. The mean blood flow velocity and diameter of each vessel were measured on postnatal days 0-70. The intravascular flow volume was determined by calculating the mean blood flow velocity and the cross-sectional area. The mean blood pressures were recorded, and the ejection fraction was determined. The total cerebral blood flow (CBF) was significantly lower in infants with PROM than in infants without PROM from day 10 to day 70. The ejection fraction was significantly higher in infants with PROM than in infants without PROM on days 0, 5, 10, 21, and 42. There was no difference in the mean blood pressure between infants with PROM and infants without PROM. The results of the present study suggest that PROM may decrease cerebral blood flow after the birth.
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