title: Rare early prosthesis obstruction after mitral valve replacement: a case report and literature review.
abstract: As a dreadful complication after the mechanical heart valve replacement, prosthetic valve obstruction caused by pannus formation occurs increasingly with time. The authors here present a case of 42-year-old woman who was urgently admitted to hospital with acute heart failure symptoms due to the mechanical mitral valve failure only 3 months after surgery. Transthoracic and transesophageal echocardiography demonstrated that the bileaflet of the mitral prosthesis were completely immobilized with only a small transvalvular jet remained. During the reoperation, the reason of the prosthetic valve obstruction was attributed to the noncircular pannus ingrowth extending from the atrioventricular side. For a better understanding of the prosthetic valve dysfunction caused by pannus formation, the authors then compile a literature review to briefly discuss the status quo of the clinical characteristics of this uncommon complication.
authors: Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Cheng Du, People's Republic of China.
authors: Jun
authors: J
authors: Shi
authors: Zhi-xuan
authors: ZX
authors: Bai
authors: Jia
authors: J
authors: Hu
authors: Ben-gui
authors: BG
authors: Zhang
authors: Ying-qiang
authors: YQ
authors: Guo
mesh_terms: D000328:Adult; D005260:Female; D019918:Heart Valve Prosthesis Implantation; D006651:Histocytochemistry; D006801:Humans; D008943:Mitral Valve / Q000166:cytology / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D011475:Prosthesis Failure; D014463:Ultrasonography