Correlation Between Transabdominal Chorionic Villus Sampling and Fetal Distress With Color Doppler Sonography

Chorionic villus sampling (CVS) is an invasive method for identifying genetic and metabolic diseases, which is done in the first trimester of pregnancy and can cause many complications. The aim of this study is the evaluation of the correlation between Transabdominal chorionic villus sampling and fetal distress in color Doppler sonography. This study is experimental (before and after). All pregnant women with minor thalassemia in which their husbands were suffering from minor thalassemia or have a history of a child with major thalassemia and after the 12th week of pregnancy were referred to the ultrasound department. RI for fetal Middle Cerebral Artery (MCA) and Umbilical Artery (UA) before and after of CVS were measured and then statistically analyzed using SPSS 22. CVS did not cause a significant increase in RI for the fetal middle cerebral artery (P>0.05). CVS did cause a significant increase in RI for the umbilical artery (P<0.05). Then, CVS did cause a significant decrease in the ratio of RI for fetal Middle Cerebral Artery to RI for Umbilical Artery (P<0.05). Based on these results, it seems that CVS can cause distress in the fetus.