title: Early stenosis of stentless aortic valve prosthesis: a word of caution.
abstract: Early stenosis of stentless bioprosthetic valves is rarely reported. In this report, we discuss a 75-year-old woman who presented with signs of congestive heart failure 5 months after a stentless aortic valve replacement, complicated by postoperative heparin-induced thrombocytopenia. Intraoperative findings were highly unusual, consisting of a fibrous band in the subvalvular apparatus linking the interventricular septum to the free wall of the left ventricle, resulting in significant left ventricular outflow tract obstruction. The possible causes of the fibrous band are discussed.
authors.affiliation: Division of Cardiac Surgery, Royal Victoria Hospital, McGill University, Montreal, Quebec, Canada.
authors.forename: Adil H
authors.initials: AH
authors.lastname: Al Kindi
authors.forename: Alice
authors.initials: A
authors.lastname: Le Huu
authors.forename: Dominique
authors.initials: D
authors.lastname: Shum-Tim
mesh_terms: D000368:Aged; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000601:surgery*; D001705:Bioprosthesis; D015992:Body Mass Index; D002315:Cardiopulmonary Bypass / Q000379:methods; D003251:Constriction, Pathologic; D020878:Device Removal; D004452:Echocardiography; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects* / Q000379:methods; D006801:Humans; D009767:Obesity, Morbid; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D018570:Risk Assessment; D012720:Severity of Illness Index; D056346:Sternotomy / Q000379:methods; D016896:Treatment Outcome