EPISODE · Aug 1, 2025 · 27 MIN
Late Scans, Big Decisions: Third Trimester Ultrasound + a Midwife’s Insight
from The Seasoned Sonographer · host Lynn Flamm
Topics Covered in This Episode:When and why a third trimester ultrasound is orderedBiometry: HC, BPD, AC, FL & how they’re used to estimate fetal weight (EFW)Interpreting growth percentiles: SGA, FGR, macrosomiaAssessing fetal lie and presentation: cephalic vs. breechAFI vs. SDP/MVP: how to evaluate amniotic fluid and what’s normalReal-world scanning challenges: maternal habitus, fetal position, limited viewsWhat to document when scans are technically limitedWhen to add a Biophysical Profile and what it tells us about fetal well-beingSpecial Guest: Jessica Reichert, CNMJessica shares how third trimester ultrasounds inform clinical judgment and patient care, especially in high-risk or borderline cases. She also discusses collaboration with sonographers and shares a powerful case that underscores why these scans matter.Key Takeaway:Ultrasound is a real-time, sonographer-dependent exam — and what we document (or can’t document) in the third trimester can significantly shape the final stages of pregnancy care. I’d love to hear your thoughts, questions, or even topics you’d like me to cover—connect with me @SonoTechniquesAcademy on Facebook facebook.com/profile.php?id=61574057043515 and Instagram instagram.com/sonotechniquesacademy or send me an email at [email protected]. Disclaimer: The information provided in this podcast and any accompanying materials is for educational and informational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. While every effort is made to ensure accuracy, the content is provided “as is” and without warranties of any kind.Always seek the guidance of your physician, qualified healthcare provider, or credentialed ultrasound professional with any questions you may have regarding a medical condition, scan interpretation, or clinical decision-making.The views and opinions expressed are those of the host and guests and do not necessarily reflect those of any organizations or employers. The host assumes no responsibility or liability for any errors or omissions in the content or for any outcomes related to its use.Listeners and participants are solely responsible for how they use the information shared in this podcast or training program.
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What this episode covers
In this episode of The Seasoned Sonographer, host Lynn Flamm, RDMS, dives into the third trimester ultrasound — from fetal measurements and fluid assessment to identifying fetal position and knowing when to add a Biophysical Profile (BPP). Lynn breaks down what sonographers need to document, common scan challenges, and why this late-pregnancy imaging can be both technically demanding and clinically critical. Then we’re joined by Certified Nurse Midwife Jessica Reichert, who shares how these ultrasounds impact care decisions from a provider’s perspective — and brings a powerful patient story that highlights just how much these scans can influence the course of delivery. This is a must-listen for sonographers, students, and OB providers navigating the final weeks of pregnancy care.
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Late Scans, Big Decisions: Third Trimester Ultrasound + a Midwife’s Insight
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