RESUMO -Este estudo teve como objetivo avaliar o fluxo sanguíneo cerebral em recém-nascidos a termo pequenos para idade gestacional, utilizando ultra-sonografia Doppler craniana ao nascimento. O estudo foi desenvolvido no CAISM/UNICAMP (Centro de Saúde Terciário para Mulheres). Foram selecionados sessenta recém-nascidos e divididos em 2 grupos: 36 adequados para idade gestacional (AIG) e 24 pequenos para idade gestacional (PIG). Foi realizada a avaliação de ultra-sonografia Doppler craniana nos grupos, entre 24-48 horas após o nascimento. A velocidade de fluxo sanguíneo cerebral foi menor no grupo PIG na artéria cerebral anterior (ACA). As medidas Doppler foram estatisticamente diferentes entre os grupos apenas para valores relacionados à velocidade de fluxo de pico sistólico (VFPS) e velocidade de fluxo médio (VFM) na ACA. Não houve diferenças significantes para nenhum dos parâmetros avaliados de velocidade de fluxo na artéria cerebral média (ACM). Concluiu-se que recém-nascidos PIG apresentaram VFPS e VFM significativamente menores apenas na ACA. A adequação peso/ idade gestacional, presença de policitemia neonatal e valores de pressão arterial média estiveram estatisticamente associados a VFM na ACA. A presença de sofrimento fetal, valores de pressão arterial média e hábito de fumar durante a gestação estiveram estatisticamente associados a VFM na ACM.PALAVRAS-CHAVE: Doppler-ultra-sonografia craniana, desnutrição intra-uterina, recém-nascido.Neonatal Doppler velocimetry in full term small-for Neonatal Doppler velocimetry in full term small-for Neonatal Doppler velocimetry in full term small-for Neonatal Doppler velocimetry in full term small-for Neonatal Doppler velocimetry in full term small-for-gestational age newborns -gestational age newborns -gestational age newborns -gestational age newborns -gestational age newbornsABSTRACT -This study aimed to evaluate the cerebral blood flow of full term small-for-gestational age newborns, using cranial ultrasound Doppler at birth. This study was performed at CAISM/UNICAMP (Tertiary Health Center for Women). Sixty term newborns were selected and divided in two groups: appropriate-for-gestational age (AGA) (36 neonates) and small-for-gestational age (SGA) (24 neonates). Cranial ultrasound Doppler evaluation was performed on both groups, between 24 and 48 hours after birth. Cerebral blood flow velocity (CBFV) was lower in the small-for-gestational age group, in the anterior cerebral artery (ACA). Doppler measurements were different statistically between the groups only for values related to peak systolic flow velocity (PSFV) and mean flow velocity (MFV) in the ACA. There was no significant difference for any evaluated parameters of flow velocity in the middle cerebral artery (MCA). It was concluded that SGA newborns showed PSFV and MFV significantly reduced only in the ACA. Weight/gestational age, neonatal polycythemia and mean arterial blood pressure values were statistically related to MFV in the ACA. In presence of fetal suffering, mean arterial blood pressure value...
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