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Dynamic aortic obstruction in a patient with acute type B dissection.
Jessica L Mega1, Alexander R Opotowsky, Zelmira Curillova
1Brigham and Women's Hospital, Boston, Massachusetts, USA. jmega@partners.org
Cardiology in Review
|April 22, 2006
Summary
Acute type B aortic dissection can cause dynamic aortic obstruction. This case highlights unusual physiology and successful surgical repair, emphasizing contemporary management strategies for complicated dissections.
Area of Science:
- Cardiovascular Medicine
- Vascular Surgery
- Medical Case Reports
Background:
- Aortic dissection is a serious condition affecting thousands annually in the US.
- Type B dissections represent a significant portion of aortic dissection cases.
- Hypertension is a major risk factor for aortic dissection.
Observation:
- A 48-year-old woman presented with acute type B aortic dissection.
- Intravascular ultrasound revealed a mobile intimal flap causing dynamic aortic obstruction.
- A significant systolic pressure gradient (>100 mm Hg) was observed between the ascending aorta and femoral artery.
Findings:
- The patient experienced progressive renal failure due to the dissection.
- Successful surgical repair involved replacing the proximal descending thoracic aorta with a Dacron graft.
- The case demonstrates unusual hemodynamics in complicated type B aortic dissection.
Implications:
- This case underscores the importance of recognizing and managing dynamic aortic obstruction in type B dissections.
- Contemporary management may involve surgical or catheter-based interventions.
- Understanding complex aortic dissection physiology is crucial for optimal patient outcomes.