Master First Trimester Screening for Chromosomal and Structural Malformations

Enhance your expertise in detecting chromosomal abnormalities and structural defects early in pregnancy with this comprehensive course by Lyndon M. Hill, MD. Discover the latest techniques in nuchal translucency measurements, serum analytes, and nasal bone assessment to improve patient outcomes in obstetrical ultrasound.

Key Benefits and Learning Objectives

This course equips you with essential knowledge to refine your screening practices and recognize critical indicators during the first trimester. After completing this activity, the participant will:

Describe the possible etiologies of a thickened nuchal translucency
Apply the NT measurement technique in the first trimester and recognize the effect of multiple gestation on this measurement
Improve outcomes in your practice through recognition of the prevalence of abnormalities in chromosomally normal fetuses with an increased NT

By mastering these objectives, you'll gain confidence in identifying risks for Down syndrome, trisomy 18, and structural anomalies, leading to more accurate diagnoses and informed patient counseling.

Course Content Overview

Delve into the fundamentals and advanced aspects of first trimester screening in this detailed chapter-based module. Explore the historical context and evolution of nuchal translucency (NT) screening, including its association with chromosomal abnormalities identified in the early 1990s.

Serum Analytes: Understand the role of free β-hCG and PAPP-A in screening for Down syndrome, achieving up to 90% detection rates when combined with NT measurements.
Pathophysiology of Thickened NT: Examine proposed etiologies such as abnormal lymphatic drainage, cardiac issues, and genetic factors, and learn how NT evolves from threshold values to multiples of the median for risk assessment.
Measurement Technique: Follow the standardized Fetal Medicine Foundation protocol for accurate NT imaging, including tips for mid-sagittal views, caliper placement, and avoiding pitfalls like nuchal cords using color Doppler.
Screening in Multiple Gestations: Address challenges in twins, including higher false positive rates in monochorionic pregnancies and implications for twin-to-twin transfusion syndrome.
Outcomes in Normal Chromosomes with Thick NT: Recognize increased risks of miscarriage, structural defects, and postnatal issues, with prevalence data for major abnormalities like cardiac defects and diaphragmatic hernia.
Advanced Topics: Cover major cardiac defects, potential developmental delays, ductus venosus flow assessment as a second-tier test, and nasal bone evaluation to reduce false positives.

This course integrates evidence from large-scale studies, such as the North American 12-center trial, to provide practical, up-to-date guidance for obstetrical ultrasound professionals.

Who Should Take This Course

Designed for healthcare providers focused on prenatal care and ultrasound interpretation.

Physicians, sonographers, and others who perform and/or interpret obstetrical ultrasound

CME Credit Information

Earn 1 CME credit in the OBGYN category upon completion. This activity is accredited for physicians seeking to stay current with first trimester screening advancements.

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First Trimester Screening For Chromosomal And Structural Malformations

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