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- W1974799574 abstract "Blood flow velocities of the anterior cerebral artery and right radial artery were studied in 15 postasphyxiai term neonates using a continuous waveform bidirectional Doppler flowmeter. Pulsatility index (PI) values of most mild asphyxic infants were within the normal range. However, the infants with anoxic encephalopathy showed high or low PI values. The minimal flow velocities of the right radial artery (RRA) showed markedly retrograde flow velocity shortly after birth in comparison with those of the controls. The high PI values may be mainly due to a marked decrease of diastolic flow velocity representing retrograde flow in RRA. The low PI values indicated the poor prognosis in the postasphyxiai infants. In low PI cases the cerebrovascular autoregulation may be presumed to be impaired, and arterioles to be markedly dilated. Blood flow velocities of the anterior cerebral artery and right radial artery were studied in 15 postasphyxiai term neonates using a continuous waveform bidirectional Doppler flowmeter. Pulsatility index (PI) values of most mild asphyxic infants were within the normal range. However, the infants with anoxic encephalopathy showed high or low PI values. The minimal flow velocities of the right radial artery (RRA) showed markedly retrograde flow velocity shortly after birth in comparison with those of the controls. The high PI values may be mainly due to a marked decrease of diastolic flow velocity representing retrograde flow in RRA. The low PI values indicated the poor prognosis in the postasphyxiai infants. In low PI cases the cerebrovascular autoregulation may be presumed to be impaired, and arterioles to be markedly dilated." @default.
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- W1974799574 date "1983-01-01" @default.
- W1974799574 modified "2023-09-27" @default.
- W1974799574 title "Cerebral blood flow velocities in postasphyxiai term neonates" @default.
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- W1974799574 doi "https://doi.org/10.1016/s0387-7604(83)80055-2" @default.
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