Tricuspid annuloplasty with the MC3 ring and septal plication technique

Tadashi Isomura, Masanori Hirota, Joji Hoshino, Yasuhisa Fukada, Taichi Kondo, Yu Takahashi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)5-10
Number of pages6
JournalAsian Cardiovascular and Thoracic Annals
Issue number1
Publication statusPublished - Jan 19 2015
Externally publishedYes


  • Cardiac valve annuloplasty
  • Heart valve diseases
  • Heart valve prosthesis implantation
  • Tricuspid valve insufficiency

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine


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