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題 名 | Fetal Occipito-Frontal Diameter in Normal Pregnancy: Reappraisal by Altman's Model=正常妊娠之胎兒頭部額枕徑研究:以奧特曼模式重新分析 |
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作 者 | 張炯心; 張峰銘; 游振祥; 姚博琳; 梁仁英; 柯慧貞; 林鈺祥; | 書刊名 | Journal of Medical Ultrasound |
卷 期 | 5:1 1997.03[民86.03] |
頁 次 | 頁5-11 |
分類號 | 417.343 |
關鍵詞 | 正常妊娠; 胎兒頭部額枕徑; 奧特曼模式; Fetal OFD; Ultrasound; Altman's model; |
語 文 | 英文(English) |
英文摘要 | Background: The purpose of this study was to develop a chart of normal fetal occipito-frontal diameter (OFD) in the Taiwanese population, based on a pure cross-sectional design and without the weaknesses of previously published literature. Materials and Methods: Normal singleton fetuses between 16 and 41 weeks of gestation were enrolled in this study in the Antenatal Ultrasound Unit of the National Cheng Kung University Hospital. Only one scan for each fetus was included. The data were analyzed by polynomial regression analysis, and the equations for the prediction of fetal growth were devised. Altman's model was applied to calculate the standard deviation of each gestational age (GA) before constructing the charts of fetal growth percentiles. Results: A total of 2,048 fetuses with normal growth were included in this cross-sectional study. The best-fitting equation in the prediction of fetal OFD using GA was OFD=0.74569 x GA - 7.96580 x 10 �笐� x GA �� - 5.84531 (R=0.97159, p<0.0001). The best-fitting equation in the prediction of fetal GA using OFD was GA=0.44325 x OFD + 0.16763 x OFD �� + 11.66546 (R=0.96411, p<0.0001). Tables for OFD growth have been generated as a reference for prenatal care. Conclusion: Derived by strictly following the criteria of the study design and appropriate statistical modeling, these fetal OFD values should be suitable for assessing fetal head growth in Taiwan. |
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