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Updated: Mar 11, 2026

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
Published on: May 26, 2023
Reinforced mitral valve replacement using a xenopericardium collared prosthetic valve for a heavily calcified or
Masaru Ishida1, Koichi Toda1, Teruya Nakamura1
1Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka Suita, Osaka, 565-0871, Japan.
Abstract:
Heavy mitral annular calcification or severe destruction of the mitral annulus in the setting of mitral valve replacement may result in fatal complications, such as atrioventricular disruption, ventricular rupture, valve dehiscence, and perivalvular leakage. Collar-reinforced mitral valve replacements with xenopericardium have been reported to prevent perivalvular leakage and valve detachment. We herein describe our experience with an easy method of handling the modified collar-reinforced prosthetic valve, which we call the "Dumpling technique", in six patients.
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