One-year results from cryopreserved mitral allograft transplantation into the tricuspid position in a sheep experimental model

Implantation of a mitral allograft into the tricuspid valve position in active infective endocarditis

In cases of severe and recurrent infectious lesions affecting the right heart, one alternative option for bioprosthetic intervention is the implantation of a mitral allograft (a donor heart valve) in the position of the tricuspid valve. We present a clinical case detailing the successful implantation of a fresh mitral allograft into the tricuspid position in a 37-year-old male patient diagnosed with active infective endocarditis of the tricuspid valve and a high risk of prosthetic endocarditis. The mitral allograft was anatomically implanted with annuloplasty using an expanded polytetrafluoroethylene band. Subsequently, the patient was discharged in satisfactory condition. During the 9-month follow-up examination, no signs of infection were observed. Furthermore, the mitral allograft demonstrated excellent functionality, as evidenced by the absence of regurgitation and a mean pressure gradient measuring only 2 mmHg.