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Updated: Jun 23, 2026

Monitoring the Wall Mechanics During Stent Deployment in a Vessel
Published on: May 8, 2012
Mitroflow bioprosthesis stent deformation: a rare cause of early prosthetic stenosis
Javier Gualis1, Mario Castaño, Jesús Gómez-Plana
1Department of Cardiovascular Surgery, León City Hospital, León, Spain. javgua@hotmail.com
Abstract:
We report the case of a severe prosthetic aortic stenosis in a 61-year-old male patient with an aortic Mitroflow LF bioprosthesis (Sorin Group) at early (6 months) postoperative echocardiographic follow-up. At reintervention, we found significant stent deformation, asymmetric orientation of the posts, and subsequent central kinking and prolapse of one leaflet. Maldistribution of pledgeted mattress sutures over the flexible stent was found to be the origin of its permanent deformation. Simple technical preventive strategies of this previously unreported complication are suggested.
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