Mitroflow bioprosthesis stent deformation: a rare cause of early prosthetic stenosis.
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.
Gualis
Javier
J
Department of Cardiovascular Surgery, León City Hospital, León, Spain. javgua@hotmail.com
Castaño
Mario
M
Gómez-Plana
Jesús
J
Callejo
Francisco
F
D001024:Aortic Valve Stenosis / Q000209:etiology* / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects*; D020878:Device Removal; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D015607:Stents / Q000009:adverse effects*