-The aim of this study was to verify developmental aspects of fetal movements through 2D ultrasonic re c o rdings of normal fetuses, product of low risk pregnancies. A qualitative analysis of the several types of movements was perf o rmed in a sample of six fetuses, each four weeks, from 12 t h to 40 t h g e stational week. In the close period to 20 t h gestational week it was re g i s t e red the largest prevalence of movements. It was observed that certain movements disappear, and others stay or appear through period. Complex movements (breathing, deglutition and suction) were more frequent after the 20 t h week than b e f o re. In spite of the fetuses have presented a general motor pattern, individual variations were observ e d . These findings are in consonance with literature, toward the existence of certain motor pattern, with emergence and disappearance of the several types of movements according to the gestational age, and individual variations that suggest specificity.KEY WORDS: human fetus, development, movement.Abordagem sobre movimentos fetais: estudo piloto de seis casos RESUMO -O objetivo deste estudo foi verificar aspectos do desenvolvimento de movimentos fetais por gravações de ultra-sonografia 2D de fetos normais, produto de gravidez de baixo risco. Análise qualitativa dos vários tipos de movimentos foi realizada em uma amostra de seis fetos registrados a cada quatro semanas, de 12 a 40 semanas gestacionais. No período da 20ª semana gestacional ocorreu a maior pre v a l ê ncia de movimentos, considerando toda a amostra. Observou-se que certos movimentos desaparecem, out ros permanecem e outros surgem durante o período analisado. Movimentos complexos foram menos detectados no princípio da gestação, aumentando depois da 20ª semana. Apesar dos fetos apresentarem um padrão motor comum, foram observadas variações individuais. Tais achados estão de acordo com a literatura, apontam para um padrão motor com aparecimento e desaparecimento dos vários tipos de movimentos de acordo com a idade gestacional e com variações individuais que sugerem especificidade. PALAVRAS-CHAVE: feto humano, desenvolvimento, movimento.
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