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Fetal Echocardiography: Factors that Influence Imaging of the Fetal Heart During the Second Trimester of Pregnancy

The four‐chamber view of the heart is an important component of the ultrasonographic examination of the fetus. However, during the second trimester of pregnancy the fetal heart cannot always be imaged in every patient. The purpose of this study was to ascertain the rate of successful imaging of the fetal heart during the second trimester and to determine factors that may influence imaging.