Millimeters Matter: Cervical Length, Technique, and the Clinical Impact

In this episode, we dive deep into the clinical importance of cervical length measurement by transvaginal ultrasound—a key screening tool for identifying risk of preterm birth. We cover:

The criteria for when and why to measure cervical length

A step-by-step technical breakdown for accurate transvaginal imaging

The significance of funneling, with a focus on V-shaped vs. U-shaped funneling and what each implies about cervical integrity

The use of Valsalva maneuver and fundal pressure to assess dynamic cervical changes

High-risk factors including history of LEEP, twins, and previous preterm delivery

Why precision in sonographer technique matters and how small differences in measurement can shape major clinical decisions

We also introduce Dr. Torrez, a board-certified OB/Gyn, who joins us to discuss a recent patient case from our own office. In this powerful clinical vignette, we explore how a short cervix—measured during a routine scan—led to timely intervention that ultimately changed the trajectory of care.

Whether you’re a sonographer, provider, or educator, this episode offers practical insight, clinical pearls, and a reminder that millimeters truly do matter.

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.

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