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Objective: We report our experience with the transapical transcatheter “Valve in valve” implantation (T‐VIV) in patients with a failed mitral or tricuspid bioprosthesis; we briefly review the pertinent literature, and discuss some technical aspects of this procedure. Background: Redo valve surgery for failure of a mitral or tricuspid bioprosthesis might become extremely challenging, both because of the patients' condition, which is frequently poor, and for the technical aspects of the operation itself, that can be very demanding. T‐VIV has been widely employed with good results for the treatment of aortic bioprosthesis failure, and could represent an attractive option in this setting. Methods: Four patients with multiple comorbidities (age: 63‐83 years; logistic Euroscore: 37.2‐81.5) underwent T‐VIV at our institution for failure of a mitral [3] or tricuspid [1] bioprosthesis. A 26mm Sapien valve was used in all cases. All the mitral …