Midterm Outcome of Mitral Valve Repair with Artificial Chordae for Only Posterior Leaflet Disease-Comparison with the Resectional Technique in a Single Institute.

OBJECTIVE

We compared the midterm results of mitral valve repair with and without leaflet resection, and revealed the effectiveness of this technique, even for in the posterior leaflet alone.

PATIENTS: From August 2002 to March 2014, a total of 306 mitral valve repairs were carried out at our hospital. Of these patients, 50 cases did not undergo leaflet resection (Artificial Chordae; Group A) and 56 cases underwent leaflet resection (Resectional; Group R). There were no significant differences in the preoperative profiles.

RESULTS

The follow up rate was 98% and 100% respectively. The mean cardiopulmonary bypass time and aortic cross clamp time were not significantly different. The average ring size was significantly larger (p <0.01) in Group A. All cause mortality at 3 years and 8 years was both 97.8% in Group A and was both 98.1% in Group R. Freedom from moderate mitral regurgitation at 3 years was 97.1% and at 8 years was 91.7% in Group A and 97.4% and 94.6% in Group R respectively. There were no cases of mortality, re-operation for recurrent mitral regurgitation, hemolytic anemia and infectious endocarditis.

CONCLUSION

We demonstrated good midterm results in mitral valve repair without leaflet resection. However, further follow-up was needed.