![]() ![]() Considering that nearly 1% of births every year are known to have congenital i X An inherited or acquired condition that exists at birth heart defects, the doctor observes the structure of the heart to check for any congenital disabilities in the second ultrasound, or the 20th-week anatomy scan i X An ultrasound scan performed between 18 and 21 weeks of pregnancy to assess the fetal development (14). Your first prenatal ultrasound, which is scheduled sometime between the 6th and 9th week, confirms your pregnancy, determines the due date and monitors the embryonic heartbeat. It is used at the time of labor so that the FHR and uterine contractions can be monitored simultaneously. A wire that passes through the cervix helps measure the fetal heart rate. In most cases, an ultrasound can detect the.
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