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目的分析导致Osaka超声多参数预测胎儿体质量公式误差的因素及其改良方程。方法回顾性分析本院519例足月单胎孕妇在超声测量后3d内分娩的正常体质量儿的出生体质量、各项胎儿生物指标,用相关分析及多元线性逐步回归的方法新建的3个回归方程,与Osaka University公式一起应用于199例前瞻性验证,分别进行了预测符合率、绝对误差与相对误差的比较。结果胎儿腹部面积及腹围对胎儿体质量的影响最显著,胎儿肱骨长在预测胎儿体质量上优于股骨长。结论胎儿腹部面积、腹围及胎儿肱骨长是胎儿体质量较敏感的指标。
OBJECTIVE: To analyze the factors that lead to the multi-parameter prediction of fetal body mass formula error and the improved equation. Methods A retrospective analysis of our hospital 519 cases of singleton pregnant women within 3 days after ultrasound measurement of the birth weight of normal birth weight, the fetal biological indicators, using correlation analysis and multiple linear step-by-step regression of the new 3 Regression equation, and Osaka University formula applied to 199 cases of prospective validation, respectively, the prediction of the coincidence rate, absolute error and relative error comparison. Results The fetal abdominal area and abdominal circumference had the most significant effect on the fetal body weight. The fetal humerus was superior to the femur in predicting fetal body mass. Conclusion Fetal abdominal area, abdominal circumference and fetal humerus length are more sensitive indicators of fetal body mass.