scholarly journals New reference values for biometrical measurements and sonographic estimated fetal weight in twin gestations and comparison to previous normograms

2019 ◽  
Vol 47 (7) ◽  
pp. 757-764
Author(s):  
Renana Wilkof Segev ◽  
Milana Gelman ◽  
Esther Maor-Sagie ◽  
Alon Shrim ◽  
Mordechai Hallak ◽  
...  
Keyword(s):  
Reference Values ◽  
Medical Center ◽  
Normal Growth ◽  
Fetal Weight ◽  
Primary Analysis ◽  
Monochorionic Twins ◽  
Equal Distribution ◽  
Wide Variability ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight

Abstract Objective To construct new reference values for biometrical measurements and sonographic estimated fetal weight (sEFW) in twin gestations and compare them to previously published normograms. Methods A retrospective analysis of sEFW evaluations of twin gestations was performed between 2011 and 2016 in a single university-affiliated medical center. sEFW was calculated using the Hadlock 1985 formula. To avoid selection bias, one evaluation per pregnancy was randomly selected. Following mathematical transformation to obtain normality of values, normograms were constructed using a best-fit regression model for estimation of mean and standard deviation at each gestational age (GA). Normograms were validated by applying all observations to ensure equal distribution at parallel percentiles. Our normograms were then compared to previously published sEFW normograms for twin gestations. Results A total of 864 sEFW evaluations were performed on 195 twin pregnancies at 22–39 gestational weeks. Of them, 390 entered the primary analysis. The rest were left for validation. Seventy percent of the cohort were dichorionic-diamniotic twins (136/195), 16% (32/195) were monochorionic-diamniotic twins and three (1.5%) were monochorionic-monoamniotic twins. Twenty-four fetuses lacked data on chorionicity. The rest were monochorionic twins or were of unknown chorionicity. Values corresponding to the 2.5th, 10th, 50th, 90th and 97.5th percentiles for sEFW are presented for every GA. Validation by applying all 864 evaluations on constructed normograms was achieved. Comparison to previously published twins’ sEFW normograms demonstrated wide variation between curves. Conclusion New reference values for biometrical measurements and sEFW in twin gestations are presented for clinical and research use. Comparison to other curves demonstrates the wide variability and need for further investigation on twin’s normal growth.

DIAGNOSIS AND MANAGEMENT OF SELECTIVE FETAL GROWTH RESTRICTION IN MONOCHORIONIC TWINS

2009 ◽  
Vol 20 (4) ◽  
pp. 269-281 ◽  
Author(s):  
EDUARD GRATACÓS ◽  
ELISENDA EIXARCH ◽  
FATIMA CRISPI
Keyword(s):  
Fetal Growth ◽  
Common Sense ◽  
Fetal Growth Restriction ◽  
Growth Restriction ◽  
Fetal Weight ◽  
Abdominal Circumference ◽  
Monochorionic Twins ◽  
Normal Ranges ◽  
Estimated Fetal Weight ◽  
Simple Definition

Selective fetal growth restriction (sFGR) has been reported to occur in about 10–15% of monochorionic (MC) twins. The diagnosis of sFGR has been based on variable criteria including estimated fetal weight (EFW), abdominal circumference and/or the degree of fetal weight discordance. Recent studies tend to use a simple definition which includes the presence of an EFW less than the 10th percentile in the smaller twin. Some would argue that the intertwin fetal weight discordance should be included in the definition. Indeed this factor plays a major role in the complications presented by these cases. While the majority of cases with one fetus below the 10th percentile usually will also present with a large intertwin EFW discordance, the contrary is not always true. Thus, it is possible to find MC twins with remarkable intertwin EFW discordance but the EFW of both fetuses are still within normal ranges. Although it appears to be common sense that a large intertwin discrepancy might represent a higher risk for some of the complications described later in this review, there is no consistent evidence to support this notion. Therefore, due to its simplicity, a definition based on an EFW below 10th percentile in one twin is probably the most useful for clinical and research purposes.

scholarly journals P19.08: Sonographically estimated fetal weight discordance and perinatal outcomes in twin pregnancies

2018 ◽  
Vol 52 ◽  
pp. 189-189
Author(s):  
H. Boo ◽  
S. Kim ◽  
Y. Han ◽  
M. Kim ◽  
Y. Lee ◽  
...  
Keyword(s):  
Perinatal Outcomes ◽  
Fetal Weight ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight

scholarly journals VP41.01: Accuracy of ultrasound estimated fetal weight in twin pregnancies

2021 ◽  
Vol 58 (S1) ◽  
pp. 269-270
Author(s):  
H. Abbassi ◽  
A. Karoui ◽  
A. Ben Mansour ◽  
K. Dimassi
Keyword(s):  
Fetal Weight ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight

scholarly journals An ultrasonographic estimated fetal weight reference for Japanese twin pregnancies

2018 ◽  
Vol 46 (2) ◽  
pp. 209-215
Author(s):  
Masaki Sekiguchi ◽  
Masashi Mikami ◽  
Chie Nakagawa ◽  
Mika Ozaki ◽  
Shinji Tanigaki ◽  
...  
Keyword(s):  
Fetal Weight ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight

Can Fetal Weight Discordancy Measured by Ultrasound During Pregnancy Predict Maternal Complications and Neonatal Outcomes in Dichorionic Diamniotic Twins?

2021 ◽  
Author(s):  
Hyun Mi Kim ◽  
Hyun-Hwa Cha ◽  
Won Joon Seong ◽  
Mi Ju Kim
Keyword(s):  
Placenta Previa ◽  
Statistical Significance ◽  
Neonatal Outcomes ◽  
Fetal Weight ◽  
Maternal Complications ◽  
Weight Difference ◽  
Delivery Times ◽  
Discordant Twins ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight

Abstract Purpose: The aim of this study was to determine the relationships between the estimated fetal weight discordancy, which was measured by ultrasound during pregnancy, and maternal pregnancy complications and neonatal outcomes in dichorionic diamniotic twin pregnancies.Methods: We conducted a retrospective review of the medical records of 320 twin pregnancies delivered at Chilgok Kyungpook National University Hospital between January 2011 and February 2020. This study included dichorionic diamniotic twin mothers who delivered between 32+1 and 38+0 weeks of gestation. Mothers who had one fetal demise, a major anomaly, or twin-specific complications were excluded. At 20–24 weeks and 28–32 weeks of gestation, participants were divided into 2 groups: discordant twins with an estimated fetal weight difference of more than 20% and concordant twins with a weight difference of less than 20%. The maternal complications and neonatal outcomes were compared between the two groups. Results: The incidences of preeclampsia and placenta previa were significantly higher in discordant twins measured between 20 and 24 weeks compared with concordant twins, but no statistical significance was found in the neonatal outcomes between the two groups. Delivery times were earlier and neonatal weights were lower in discordant twins measured between 28 and 32 weeks. Neonatal outcomes such as ventilator use and neurodevelopment were also significantly different. Conclusion: Discordance in estimated fetal weight measured by ultrasound between 20 and 24 weeks is a risk factor for maternal preeclampsia and placenta previa, whereas discordancy at 28–32 weeks can predict poor neonatal outcomes.

Second-Trimester Estimated Fetal Weight and Discordance in Twin Pregnancies

2011 ◽  
Vol 30 (8) ◽  
pp. 1095-1101 ◽  
Author(s):  
Nathan S. Fox ◽  
Daniel H. Saltzman ◽  
Rachel Schwartz ◽  
Ashley S. Roman ◽  
Chad K. Klauser ◽  
...  
Keyword(s):  
Fetal Weight ◽  
Second Trimester ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight

scholarly journals EP12.08: A reference for the ultrasonographic estimated fetal weight in Japanese twin pregnancies

2018 ◽  
Vol 52 ◽  
pp. 251-252
Author(s):  
M. Sekiguchi ◽  
C. Nakagawa ◽  
M. Muramoto ◽  
J. Muromoto ◽  
K. Ogawa ◽  
...  
Keyword(s):  
Fetal Weight ◽  
Twin Pregnancies ◽  
Estimated Fetal Weight
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