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Objective: to investigate the predictive value of fetal weight discordance as a risk factor associated with adverse perinatal outcomes. Materials and Methods: 55 patients with monochorionic diamniotic twin pregnancies with fetal weight discordancy were analyzed. All patients underwent ultrasound examination in the 1st trimester of pregnancy (11-14 weeks) to confirm the chorionicity. Estimated fetal weight discordance was calculated as (larger estimated fetal weight - smaller estimated fetal weight) / larger estimated fetal weight. All monochorionic patients were divided into the groups according to the differences in birthweight in twins (≤10%, >10 ≤15%, >15 ≤20%, ≤20 ≤25%, >25%). Adverse perinatal outcomes included: preterm delivery rate (≤34 weeks), fetal distress, low Apgar score, perinatal death, pathological neurosonographic findings. Results: severe birthweight discordance (>20%) in our study was associated with the highest risk of prematurity (76.2%), IUGR (47.6%), fetal distress and low Apgar score (75.0%), pathological neurosonographic findings (46.3%). These adverse perinatal outcomes were more pronounced in the group of monochorionic patients with birthweight discordance greater than 25%. Fetal weight discordance (>20%) is associated with the high risk of adverse perinatal outcomes and twin pregnancies with this complication require careful antenatal monitoring and timing of delivery.

About the Authors

L. G. Sichinava
The Russian National Research Medical University named after N.I. Pirogov of the Ministry of Health of the Russian Federation, Moscow
Russian Federation

O. B. Panina
Lomonosov Moscow State University
Russian Federation

K. G. Gamsakhurdiya
Center for Family Planning and Reproductive Health Department of Moscow
Russian Federation


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For citation:

Sichinava L.G., Panina O.B., Gamsakhurdiya K.G. FETAL DISCORDANCY IN MONOCHORIONIC TWINS. Obstetrics, Gynecology and Reproduction. 2015;9(1):6-12. (In Russ.)

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