Firsttrimester Diagnosis and Therapy @ 11-13+6 Weeks of Gestation - Part 1

Area of Science:

• Maternal-Fetal Medicine
• Prenatal Diagnostics
• Evidence-Based Medicine

Background:

• The first trimester (11-13+6 weeks of gestation) offers a critical window for early pregnancy complication screening.
• Systematic analysis of high-quality studies is essential for developing evidence-based guidelines.

Purpose of the Study:

• To provide comprehensive recommendations for first-trimester screening and diagnosis of various pregnancy complications.
• To establish a consensus on the legal basis, screening methods, and quality assessment for early pregnancy evaluation.

Main Methods:

• Systematic review and analysis of high-quality studies and publications.
• Development of evidence tables, recommendations with levels of evidence and consensus.

Main Results:

• Screening for anatomical malformations, chromosomal defects, preeclampsia, fetal growth restriction (FGR), and certain placental disorders is feasible and effective at 11-13+6 weeks.
• Screening for preterm birth and glucose metabolism disorders remains challenging in the first trimester.
• Early screening facilitates informed parental counseling and decision-making regarding pregnancy management.

Conclusions:

• First-trimester screening (11-13+6 weeks) is crucial for identifying and managing numerous pregnancy complications.
• While some screening issues are resolved, further research is needed for glucose metabolism and preterm birth detection.
• Timely intervention or reassurance based on early screening can significantly improve pregnancy outcomes and reduce complications.