Navegando por Palavras-chave "Artérias cerebrais"

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    Dopplervelocimetria colorida na avaliação da influência do tipo de parto, sexo, idade pós-natal e tempo pós-mamada nas velocidades e índices de pulsatilidade e resistência do fluxo sanguíneo cerebral em recém- nascidos a termo e saudáveis
    (Universidade Federal de São Paulo (UNIFESP), 2010-04-28) Aranha, Carlos Alberto [UNIFESP]; Lederman, Henrique Manoel [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objective: To evaluate with Color Doppler velocimetry the influence of type of delivery, sex, postnatal age and time post feeding on full term healthy newborns cerebral blood flow velocities, pulsatility and resistance index. Methods: Were studied 50 full term healthy newborns between 12 h and 72 h of life by cranial color Doppler ultrasonography. This study was approved by both institutional ethical committee and review board and the written informed consent was obtained from the parents in all cases. The newborns were investigated by computer sonography Acuson 128 XP/10, USA and Toshiba SSH-140-A, Japan,with Pulsed Color Doppler. Were evaluated the right or left anterior cerebral artery, the right and left middle cerebral arteries, the right and left posterior cerebral arteries, and basilar artery, and measurements of the Doppler blood flow parameters, peak systolic velocity, mean velocity, end diastolic velocity, pulsatility and resistance index were obtained in all arteries. The data were compared and analyzed by statistical tests using the software SPSS, version 11.0. Results: This research demonstrated that cerebral blood flow velocities, pulsatility and resistance index not changed significativally with the type of delivery, sex, postnatal age and time postfeeding of newborns. Conclusion: In considering that there was no significant influence of the type of delivery, sex, postnatal age and time post-feeding on cerebral blood flow Doppler velocimetry in full term healthy newborns between 12 h and 72 h of life, we believe that the knowledge of this cerebral hemodynamic profile of newborns in the first days of life can contribute to radiologists and neonatologists in an accurate interpretation of cranial color Doppler findings when pathologic flow velocities are analyzed.