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Updated: Feb 1, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
Published on: May 21, 2017
Aortic valve replacement in patients with protruding coronary artery stents
Masaki Nakamura1, Kenji Minakata1, Kazuhiro Yamazaki1
1Department of Cardiovascular Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Abstract:
We present two cases of aortic valve replacement (AVR) in patients with protruding coronary artery stents from the coronary ostia. In the first case, an 87-year-old female was referred for AVR due to severe aortic stenosis (AS). During the operation, we found stents protruding from the left and the right coronary ostia into the aortic root. We performed AVR with a mechanical valve and coronary artery bypass grafting with the saphenous vein to the left anterior descending artery. In the second case, a 77-year-old female was referred for AVR due to severe AS with a history of healed infective endocarditis. During surgery on the second patient, we found a stent protruding 7 mm from the left coronary ostium into the aortic root. The edge of the stent was trimmed, and AVR with a mechanical valve was performed. In both patients, we decided to use a mechanical prosthesis instead of a bioprosthesis because of the risk of leaflet injury. Herein, we discuss some issues regarding patients with AS requiring AVR with prior history of coronary stenting in the coronary ostia. <Learning objective: To explore the problem of coronary stents protruding into the ostia in cases of percutaneous coronary intervention of left main or right proximal lesions, which can compromise subsequent aortic valve procedures including surgical aortic valve replacement or even transcatheter aortic valve replacement thereafter.>.
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Heart Valves
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...