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Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
Published on: June 29, 2013
Does fetal macrosomia affect umbilical artery Doppler velocity waveforms in pregnancies complicated by gestational
Angelo Sirico1, Giuseppe Rizzo2, Giuseppe Maria Maruotti1
1a Department of Neurosciences , Reproductive and Dentistry Sciences, Center for High Risk Pregnancies, University Federico II , Naples , Italy and.
Objectives:
We aimed to establish whether macrosomic fetuses in pregnancies complicated by gestational diabetes (GDM) show different Pulsatility Index (PI) values in umbilical artery (UA) than in non-macrosomic fetuses.
Methods:
We considered 106 pregnant women with GDM. Doppler recordings of UA-PI were performed at 34-41 weeks and related to neonatal birthweight. Pregnancies were divided in two groups according to birthweight, macrosomic group (>4000 g) and controls (<4000 g), and according to birthweight centile, >90th centile and <90th centile. Differences in UA-PI and maternal and fetal characteristics between groups were tested.
Results:
Mean UA-PI was significantly lower in newborns with birthweight >4000 g than in controls (PI = 0.69; 95% CI 0.64-0.74 versus PI = 0.87; 95% CI 0.84-0.90, p < 000.1). Mean UA-PI was significantly lower in newborns with birthweight centile >90th centile than in controls (PI = 0.79; 95% CI 0.74-0.84 versus PI = 0.87; 95% CI 0.83-0.90; t = 2.653; p = 0.01). Linear regression analysis revealed a significant correlation between UA-PI and neonatal birthweight and between UA-PI and neonatal birthweight centile.
Conclusions:
Macrosomic fetuses of pregnancies complicated by GDM show lower values of UA-PI compared with controls. Despite UA-PI results, a variable related to macrosomia its role in the management of these pregnancies remains to be established.
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