Associations between fetal biometric para-meters and maternal characteristics in the prenatal screening phase for aneuploidies.

Associations between fetal biometric parameters, screening results and maternal characteristics Regarding the differences between the fetal biometric parameters in pathological and physiological pregnancies, we found that the median values of all parameters (BPD, occipito-frontal diameter, HC, AC, FL, estimated fetal weight and maternal weight gain), were smaller in the pathologic pregnancies group than in the healthy pregnancies group, even though the comparisons did not reach statistical significance (Mann Whitney tests, p>0.05, see table IV ).

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In industrialized countries, there is a strong trend toward advanced maternal age as an important risk factor for aneuploidies, particularly for first pregnancies.

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