Aranha Carlos Alberto, Lederman Henrique Manoel, Segre Conceição A M
Departamento de Diagnóstico por Imagem, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo SP, Brazil.
Arq Neuropsiquiatr. 2009 Jun;67(2B):463-73. doi: 10.1590/s0004-282x2009000300017.
The purpose of this study was to evaluate with Color Doppler the influence of type of delivery, sex, postnatal age and time post feeding on full term healthy newborns cerebral blood flow.
50 newborns were studied. The Doppler parameters, peak-systolic velocity, end-diastolic velocity, mean velocity, pulsatility index and resistance index, were measured in the anterior cerebral artery, middle cerebral artery, posterior cerebral artery, and basilar artery. The data were compared and analyzed by statistical tests. Informed consent was obtained from all parents, and the study was approved by institutional ethical committee and review board.
We observed not statistically significant differences on cerebral blood flow Doppler parameters in relation to type of delivery, sex, postnatal age and feeding in full term healthy newborns.
We believe that the knowledge of these cerebral hemodynamic profile of newborns in the first days of life can contribute in an accurate interpretation of cranial Doppler abnormal findings when pathologic flow velocities are analyzed.
本研究旨在运用彩色多普勒评估分娩方式、性别、出生后年龄及喂奶后时间对足月健康新生儿脑血流的影响。
对50名新生儿进行研究。测量大脑前动脉、大脑中动脉、大脑后动脉及基底动脉的多普勒参数，即收缩期峰值流速、舒张末期流速、平均流速、搏动指数及阻力指数。通过统计学检验对数据进行比较和分析。所有家长均签署知情同意书，本研究获机构伦理委员会及审查委员会批准。
我们观察到，足月健康新生儿的脑血流多普勒参数在分娩方式、性别、出生后年龄及喂奶方面无统计学显著差异。
我们认为，了解新生儿出生后最初几天的这些脑血流动力学特征，有助于在分析病理性流速时准确解读头颅多普勒异常结果。
