title: Resistance to secondary thrombosis of the On-X mitral prosthesis.
abstract: A 60-year-old man underwent aortic and mitral valve replacement with mechanical On-X prostheses, plus tricuspid annuloplasty ring and maze radiofrequency ablation. Two years later, he was admitted to hospital with severe orthopnea and hemolysis. Echocardiography revealed a blocked prosthetic mitral leaflet due to interference of the preserved subvalvular apparatus. Intraoperatively, one leaflet was found to be blocked by the native mitral apparatus, but no thrombus and/or pannus was present. Although, despite an abnormal blood flow, the On-X prosthesis is resistant to secondary thrombosis, even under adverse hemodynamic conditions, interference of the valve with cardiac structures remains a possibility.
authors.affiliation: Cardiac Surgery Unit, Magna Graecia University of Catanzaro, Italy. fede.j@hotmail.it
authors.forename: Federica
authors.initials: F
authors.lastname: Jiritano
authors.affiliation: Cardiac Surgery Unit, Magna Graecia University of Catanzaro, Italy.
authors.forename: Giuseppe F
authors.initials: GF
authors.lastname: Serraino
authors.affiliation: Cardiac Surgery Unit, Magna Graecia University of Catanzaro, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Rossi
authors.affiliation: Cardiac Surgery Unit, Magna Graecia University of Catanzaro, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Pisano
authors.affiliation: Cardiac Surgery Unit, Magna Graecia University of Catanzaro, Italy.
authors.forename: Attilio
authors.initials: A
authors.lastname: Renzulli
mesh_terms: D004452:Echocardiography; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013927:Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology*