First Trimester Ultrasound in Prenatal Diagnosis-Part of the Turning Pyramid of Prenatal Care.

摘要: First-trimester sonographic assessment of the risk chromosomal abnormalities is routinely performed throughout world, primarily by measuring fetal nuchal translucency thickness between 11–13 weeks’ gestation, combined with serum markers. The development high-frequency transvaginal transducers has led to improved ultrasound resolution and better visualization anatomy during first-trimester. Continuous improvement in technology allows a thorough detailed at time study. Using transabdominal or sonography, combination both approaches, it now possible diagnose wide range anomalies first trimester. Multiple studies reported early diagnosis major after demonstrating association increased structural defect chromosomally normal abnormal fetuses. Normal findings provide reassurance for women high while detection malformation trimester enables discussion decisions about treatments interventions, including termination pregnancy, an stage pregnancy.