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Updated: Jun 12, 2026
14:14
Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
Published on: December 11, 2017
Formation of pseudoaneurysm after aortic valve replacement without previous endocarditis: a case-control study
Frank Enseleit1, Jürg Grünenfelder, Julia Braun
1Clinic of Cardiology, University Hospital Zurich, and Institute for Social and Preventive Medicine, University of Zurich, Zurich, Switzerland. frank.enseleit@usz.ch
Summary
Composite grafts significantly increase the risk of pseudoaneurysm formation after aortic valve replacement. Underlying conditions and aortic root diameter are key factors in pseudoaneurysm development.
Area of Science:
- Cardiovascular Surgery
- Medical Imaging
- Surgical Complications
Background:
- Pseudoaneurysms are a potential complication following aortic valve replacement (AVR).
- Identifying predisposing factors for pseudoaneurysm formation in patients without prior endocarditis is crucial for improving patient outcomes.
Purpose of the Study:
- To determine predisposing factors for pseudoaneurysm formation after AVR in patients without a history of endocarditis.
- To analyze the influence of surgical techniques and patient-specific parameters on pseudoaneurysm occurrence.
Main Methods:
- Echocardiography was utilized to identify and evaluate patients.
- Statistical analyses, including odds ratio estimation and chi-squared goodness-of-fit tests, were employed.
- Fisher's exact test assessed the relationship between composite graft implantation and pseudoaneurysm development based on etiology and location.
Main Results:
- Patients receiving composite grafts exhibited a 27-fold increased risk of pseudoaneurysm formation compared to those undergoing AVR alone.
- Stanford type A aortic dissection and aortic regurgitation were significant underlying pathologies.
- A significant association was found between composite graft use and pseudoaneurysm location, often at the aortic root, which had a larger diameter.
Conclusions:
- The choice of surgical procedure, dictated by the underlying condition, impacts pseudoaneurysm risk post-AVR.
- The larger diameter of the aortic root is a likely contributor to the common pseudoaneurysm location at this site.
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