| Summary: | Abstract Background Pulmonary regurgitation and the subsequent functional tricuspid regurgitation are frequently observed in adult patients who previously underwent pulmonary valvular operations. Pulmonary valve replacement, in combination with tricuspid annuloplasty, is frequently performed in adult patients. However, postoperative worsening or recurrence of tricuspid regurgitation is a major concern after pulmonary valve replacement with tricuspid annuloplasty. Case presentation Herein, we describe the case of a 56-year-old woman with severe pulmonary regurgitation and functional tricuspid regurgitation after congenital pulmonary stenosis surgery in childhood. Functional tricuspid regurgitation was due to tricuspid annular dilatation, marked right ventricle enlargement, and significant tethering. We performed a bioprosthetic double valve replacement, and the postoperative course was uneventful. The patient is doing well one year after the surgery without prosthetic valve dysfunction. Conclusions When functional tricuspid regurgitation is severe and is associated with right ventricular dilatation and subsequent tethering, tricuspid valve replacement rather than annuloplasty should be considered.
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