
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
* 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
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.

