University of Maryland School of Medicine logo
Emergency Medicine
All Departments
UMSOM Assistant
UMEM Educational Pearls
  • Home
  • Departments
  • Emergency Medicine
  • CME
  • UMEM Educational Pearls
  • CME
  • Courses and Conferences
  • Free Open Access Medical Education
  • UMEM Educational Pearls

Search

Title: Thoracic Aortic Aneurysm Size

Category: Vascular

Keywords: aneurysm (PubMed Search)

Posted: 10/1/2007 by Rob Rogers, MD (Updated: 7/21/2026)

Surgical repair of thoracic aortic aneurysms is generally dictated by size. Aneurysms need repair to prevent rupture. Anything over 6 cm (which is the magic number , according to authorities) will make almost all cardiothoracic surgeons anxious. -For non-marfans patients Most cardiac surgeons will use a cut off for surgery of: ascending aorta > 5.5 cm and descending aorta > 6.5 cm -Patients with Marfans: Threshold to operate is a bit lower. ascending >5 cm and descending > 6 cm So, who cares, you ask? #1-We scan a lot of chests and we will be diagnosing this in the ED. #2-As emergency physicians we should have some familiarity with the aortic size that makes Cardiothoracic surgeons nervous and the size that can get outpatient followup. Calling a CT surgeon to the ED to see a patient with an incidental 4.8 cm ascending aortic aneurysm in many cases is not necessary...depends on the patient, followup, etc. They will definitely not be excited about a 4.8 cm aneurysm. Sure, it looks HUGE on CT, but most won't operate on this size.
University of Maryland School of Medicine logo
  • Departments
  • Programs
  • Research Centers
  • Institutes
  • Graduate Education
  • CIBR Cores
  • Offices of the Dean
    • University of Maryland, Baltimore
    • University of Maryland Medical Center
    • Medical Alumni Association of the University of Maryland
    • Health Sciences and Human Services Library
University of Maryland School of Medicine
655 W. Baltimore Street
Baltimore, MD 21201
Contact Us

© University of Maryland School of Medicine

    • Webmaster
    • Web Accessibility
    • Site Index
    • UMB Hotline
    • Employment
    • Map