RESUMO
OBJECTIVE: To compare the echocardiography parameters during different pregnancy trimesters and to determine the reference range of echocardiography for pregnant women.METHODS: Normal pregnant women were recruited from Renji Hospital,Shanghai Jiao Tong University School of Medicine from February 2017 to December 2017.Women were randomly assigned into 4 groups,cardiac ultrasonography was performed in any one of the three trimesters or 42 days postpartum,and the reference ranges of indicators were determined in each group.Non-pregnant women of childbearing age were recruited as controls.Make a comparison of the measurement values of echocardiography at different trimesters of pregnancy.RESULTS: A total of 733 normal pregnant and non-pregnant women were enrolled,and reference values of echocardiography indexes were determined.The reference range of echocardiograph parameters for pregnant women was established for the first time.Compared with non-pregnant women,there were significant differences in echocardiography parameters among these groups. With the increase of gestational age,the radial lines of left and right atria and ventricles enlarged;the aortic root diameter and pulmonary artery diameter increased,and left and right heart systolic function declined. Most of the above changes reached a peak in the third trimester and did not return to the nonpregnancy level at 42 days postpartum. The diastolic function did not change significantly throughout pregnancy or 42 days postpartum.CONCLUSION: The current normal reference range of echocardiography is not fully applicable to pregnant women,so it is of great importance to establish a normal reference range of echocardiography for pregnant women.