Umbilical Cord Variations: Vessel Number, Coiling Patterns, Knots, and Cysts

Umbilical Cord Variations: Vessel Number, Coiling Patterns, Knots, and Cysts

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Course Overview

Umbilical cord findings offer important clues about fetal development, placental function, and pregnancy risk. This course provides a clear sonographic approach to evaluating common and clinically significant cord variations, including vessel number, single umbilical artery, abnormal coiling patterns, suspected true knots, and cord cysts.

Learners will review practical scanning techniques, key imaging landmarks, documentation language, and when findings may warrant follow-up or additional clinical correlation.

Course Content

Credits

1.00
AMA PRA Category 1™ Credits

* AMA PRA Category 1™ credits are used by physicians and other groups like PAs and certain nurses. Category 1 credits are accepted by the ACCME, ARDMS, CCI, and Sonography Canada.

Course Details

Duration
1.00 hour
Released
May 18, 2026
Last Review
May 18, 2026
Expires
May 18, 2029

Objectives

1. Confirm cord vessel number and recognize a single umbilical artery.

2. Identify abnormal coiling and cord cysts with appropriate differential considerations.

3. Document cord findings using standardized terminology.

Target Audience

  • Diagnostic medical sonography students

  • OB/GYN sonographers

  • Maternal-fetal medicine sonographers

  • Physicians, advanced practice providers, and interpreting clinicians involved in obstetric imaging

Faculty & Disclosure

Faculty

Lashell Jones RDMS, RDCS

Disclosure

Lashell Jones RDMS, RDCS discloses no such relationships exist

Accreditation

The Institute for Advanced Medical Education is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The Institute for Advanced Medical Education designates this enduring material for a maximum of 1.00 AMA PRA Category 1 Credit™.

Physicians should only claim credit commensurate with the extent of their participation in the activity. Sonographers: These credits are accepted by the American Registry for Diagnostic Medical Sonography (ARDMS), Sonography Canada, Cardiovascular Credentialing International (CCI), and most other organizations.