Premium
Reference charts for fetal biometric parameters in twin pregnancies according to chorionicity
Author(s) -
Araujo Júnior Edward,
Ruano Rodrigo,
Javadian Pouya,
Martins Wellington P.,
Elito Júnior Julio,
Pires Claudio Rodrigues,
Zanforlin Filho Sebastião Marques
Publication year - 2014
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/pd.4318
Subject(s) - obstetrics , medicine , gestational age , biometrics , biparietal diameter , gestation , twin pregnancy , monochorionic twins , fetus , birth weight , pregnancy , gynecology , head circumference , biology , genetics , computer security , computer science
Objective The objective of this article is to determine reference values for fetal biometric parameters in twin pregnancies and to compare these values between monochorionic and dichorionic pregnancies. Methods A retrospective cross‐sectional study was conducted among 157 monochorionic and 176 dichorionic twin pregnancies between 14 and 38 weeks of gestation. Biometric measurements included the biparietal diameter (BPD), abdominal circumference (AC), femurs length (FL) and estimated fetal weight (EFW). To evaluate the correlation between biometric parameters and gestational age, polynomial regression models were created, with adjustments using the coefficient of determination ( R 2 ). Comparison between monochorionic and dichorionic pregnancies was performed using analysis of covariance. Results The mean BPD, AC, FL and EFW for the dichorionic pregnancies were 56.16 mm, 191.1 mm, 41.08 mm and 816.1 g, respectively. The mean BPD, AC, FL and EFW for the monochorionic pregnancies were 57.14 mm, 184.2 mm, 39.29 mm and 723.4 g, respectively. There was a statistical difference between mono and dichorionic pregnancies for all the biometric parameters (BPD p = 0.012; AC p = 0.047; FL p = 0.007; EFW p = 0.011). Conclusion Reference curves of biometric parameters in twin pregnancies were determined. Biometric parameters were statistically different between monochorionic and dichorionic pregnancies. © 2014 John Wiley & Sons, Ltd.