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Study of transient accelerations of fetal heart rate analyzed by computerized cardiotocography in the third trimester of pregnancy

Grant number: 11/20140-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): January 01, 2012
Effective date (End): December 31, 2012
Field of knowledge:Health Sciences - Medicine - Maternal and Child Health
Principal researcher:Roseli Mieko Yamamoto Nomura
Grantee:Ana Luisa Fernandes Lauletta
Home Institution: Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil


The sympathetic and parasympathetic control of the movement are matured at different times during fetal development. Knowledge of this process is useful for understanding pathologies that may affect the fetus during its development. To better understand this process, the computerized cardiotocography can be useful method for analyzing the physiological patterns of fetal heart rate (FHR). Objectives: To study the patterns of transient FHR accelerations in the 3rd trimester of pregnancy, comparing the differences between the groups with 28 to 32 v/‡ and 33 to 40 weeks gestation. Methods: Prospective and comparative study, to compare the results of computerized cardiotocography of 46 low-risk pregnancies with a gestational age between 28 and 40 weeks in the Pre-Natal. The inclusion criteria are: single pregnancy, live fetus, maternal age between 18 and 35 years old, gestational age between 28 and 40 weeks, absence of maternal morbidity, adequate fetal growth by ultrasound, understanding of the research method and agreement to participate. Computerized cardiotocography will be held for 30 minutes to analyze the variables of the FCF. The patients included in the study are grouped according to gestational age into two groups: 28 to 31 v / ‡ and 32 to 40 weeks of gestation and intended to compare the different parameters of the FHR in these groups, highlighting the information regarding the frequency of transient accelerations observed.

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