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F. Gary Cunningham, Kenneth J. Leveno, Steven L. Bloom, Catherine Y. Spong, Jodi S. Dashe, Barbara L. Hoffman, Brian M. Casey, Jeanne S. Sheffield
Williams Obstetrics, 24th Edition, is a comprehensive medical textbook focused on obstetrics. This section details the hormonal profiles of pregnancy, such as human chorionic gonadotropin (hCG), human placental lactogen (hPL), and corticotropin-releasing hormone (CRH), and their fluctuations throughout gestation. It also discusses the role of hCG in fetal development, particularly in male sexual differentiation and its influence on maternal thyroid function. Furthermore, the text outlines the importance of fetal anatomical evaluation via ultrasound in the second and third trimesters, emphasizing the assessment of fetal growth, skeletal development, and the detection of malformations.
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