Abstract
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.