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Updated: Jul 13, 2026

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
Published on: December 11, 2017
Aortic prosthesis re-replacement due to concealed stenosing subvalvular pannus ring
M Emmert1, T Kofidis, V Didilis
1Division of Thoracic and Cardiovascular Surgery, Hannover Medical School, Hannover, Germany.
Abstract:
In a patient with mechanical aortic valve prosthesis, a high transvalvular gradient was detected 16 years following the procedure, without echocardiographic clues for the underlying etiology. Intraoperatively, a stenosing pannus ring was found and excised. This pathological entity should be considered in cases of unclear transprosthetic gradient and early operation should be encouraged in symptomatic patients.
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