title: Tricuspid annuloplasty with the MC3 ring and septal plication technique.
abstract: BACKGROUND
  Functional tricuspid regurgitation is caused by annular dilation mainly in the posterior annulus. However, ring annuloplasty does not always prevent the recurrence of tricuspid regurgitation due to dilation of the septal annulus. We developed a septal plication technique with a 3-dimensional MC3 ring.
  
  
  METHODS
  Between 2006 and 2011, 76 patients (male/female 30/46; mean age 68 ± 11 years) with functional tricuspid regurgitation received tricuspid ring annuloplasty. After placement of the annular sutures, the 3 commissural ring portions were fixed on the equivalent commissures to plicate the anterior and posterior annulus. The end of the septal ring portion was fixed at the optimal annular position to obtain minimal tricuspid regurgitation. All patients were followed-up for a mean of 47 ± 18 months; the longest duration was 79 months.
  
  
  RESULTS
  Although there was no operative death, one patient died of sepsis during hospitalization (hospital mortality 1.3%). After implantation of the MC3 ring (mean size 31.0 ± 3.3 mm), additional edge-to-edge sutures were required for minor leakage in 5 (7%) patients. The degree of tricuspid regurgitation was significantly reduced at discharge (0.5 ± 0.6) and midterm (0.6 ± 0.6) compared to 2.5 ± 0.7 before the operation (p < 0.0001).
  
  
  CONCLUSIONS
  The surgical durability of the MC3 ring was satisfactory at early and midterm follow-up, suggesting that correct plication of the septal annulus is effective for tricuspid ring annuloplasty with a 3-dimensional MC3 ring.
authors.affiliation: Department of Cardiovascular Surgery, Hayama Heart Center, Kanagawa, Japan t-isomura@hayamaheart.gr.jp.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Isomura
authors.affiliation: Department of Cardiovascular Surgery, Hayama Heart Center, Kanagawa, Japan.
authors.forename: Masanori
authors.initials: M
authors.lastname: Hirota
authors.affiliation: Department of Cardiovascular Surgery, Hayama Heart Center, Kanagawa, Japan.
authors.forename: Joji
authors.initials: J
authors.lastname: Hoshino
authors.affiliation: Department of Cardiovascular Surgery, Hayama Heart Center, Kanagawa, Japan.
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Fukada
authors.affiliation: Department of Cardiovascular Surgery, Hayama Heart Center, Kanagawa, Japan.
authors.forename: Taichi
authors.initials: T
authors.lastname: Kondo
authors.affiliation: Department of Cardiovascular Surgery, Hayama Heart Center, Kanagawa, Japan.
authors.forename: Yu
authors.initials: Y
authors.lastname: Takahashi
mesh_terms: D000368:Aged; D058385:Cardiac Valve Annuloplasty / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods / Q000401:mortality; D005260:Female; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods / Q000401:mortality; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000401:mortality / Q000601:surgery; D011474:Prosthesis Design; D012008:Recurrence; D012086:Reoperation; D013536:Suture Techniques; D013997:Time Factors; D016896:Treatment Outcome; D014261:Tricuspid Valve / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D014262:Tricuspid Valve Insufficiency / Q000175:diagnosis / Q000401:mortality / Q000503:physiopathology / Q000601:surgery*; D014463:Ultrasonography
keywords: Cardiac valve annuloplasty; Heart valve diseases; Heart valve prosthesis implantation; Tricuspid valve insufficiency