Surgical repair of tricuspid regurgitation due to annular detachment caused by chest trauma.

Traumatic tricuspid valve regurgitation (TR) is a fairly rare complication of blunt chest trauma, and is usually caused by chordal and/or papillary muscle rupture. A 45-year-old woman, with a history of blunt chest trauma 16 years previously, was referred for surgery due to severe TR. During surgery, we found a large perforation on the right atrial wall located just anteriorly to the anterior leaflet, which was caused by annular detachment, in addition to anterior leaflet prolapse due to rupture of anterior chordae. The tricuspid valve was successfully repaired by direct closure of the perforation and chordal replacement with suture annuloplasty. Herein, we report a successful surgical repair of TR with annular detachment with right atrial dissection caused by blunt chest trauma. <Learning objective: Traumatic tricuspid valve regurgitation is rare, but one may encounter it from time to time. In this report, we describe the first case report of tricuspid annular detachment with fistula between the right atrium and the right ventricle caused by right atrial dissection, in which successful surgical repair was performed.>.