Ultrasonographic Diagnosis of Discordant Growth in Twin Pregnancies

Abstract

Objective: To evaluate the ultrasonographic parameters, estimated fetal weight, biparietal diameter, abdominal circumference, and femur length, in the diagnosis of discordant growth in twin pregnancies.

Main outcome measures birth weight difference exceeded 25%.

Results Among the 52 sets of twin pregnancies studied, 40 sets fulfilled the study criteria. Eight sets of twins were discordant (20%). The mean gestational age at delivery was 37.15+2.24 weeks (range 28 to 41 weeks). According to ultrasonographic morphometries, the best predictor appeared to be the presence of (estimate fetal weight > 20%, which had the high sensitivity, specificity, and accuracy (75.0%, 71.87%, and 72.5% respectively).

Conclusion The real - time ultrasonography for morphometric measurement, especially estimate fetal weight is useful for diagnosis of discordant twins.