title: [A rare case of two mechanisms of prosthetic valve dysfunction in the same patient].
abstract: Prosthetic valve dysfunction is a significant clinical event. Determining its etiological mechanism and severity can be difficult. The authors present the case of a 50-year-old man, with two mechanical valve prostheses in aortic and mitral positions, hospitalized for decompensated heart failure. He had a long history of rheumatic multivalvular disease and had undergone three heart surgeries. On admission, investigation led to a diagnosis of severe dysfunction of both mechanical prostheses with different etiologies and mechanisms: pannus formation in the prosthetic aortic valve and intermittent dysfunction of the mitral prosthesis due to interference of a ruptured chorda tendinea in closure of the disks. The patient was reoperated, leading to significant improvement in functional class.
authors.affiliation: Serviço de Cardiologia, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal. Electronic address: goncaloccardoso@gmail.com.
authors.forename: Gonçalo
authors.initials: G
authors.lastname: Cardoso
authors.affiliation: Serviço de Cardiologia, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: Marisa
authors.initials: M
authors.lastname: Trabulo
authors.affiliation: Serviço de Cardiologia, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: Maria João
authors.initials: MJ
authors.lastname: Andrade
authors.affiliation: Serviço de Cardiologia, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: Regina
authors.initials: R
authors.lastname: Ribeiras
authors.affiliation: Serviço de Cirurgia Cardiotorácica, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: Rui
authors.initials: R
authors.lastname: Rodrigues
authors.affiliation: Serviço de Cirurgia Cardiotorácica, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: José Pedro
authors.initials: JP
authors.lastname: Neves
authors.affiliation: Serviço de Cirurgia Cardiotorácica, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: João
authors.initials: J
authors.lastname: Queiróz e Melo
authors.affiliation: Serviço de Cirurgia Cardiotorácica, Hospital de Santa Cruz - Centro Hospitalar Lisboa Ocidental, Carnaxide, Portugal.
authors.forename: Miguel
authors.initials: M
authors.lastname: Mendes
mesh_terms: D001021:Aortic Valve / Q000473:pathology / Q000601:surgery*; D005355:Fibrosis; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000473:pathology / Q000601:surgery*; D011475:Prosthesis Failure / Q000209:etiology*
keywords: Chordae tendineae; Disfunção de prótese valvular mecânica; Disfunção protésica intermitente; Mitral and aortic prosthesis; Pannus