[Long-term effect of polystan monocusp ventricular outflow patch after right ventricular outflow tract reconstruction].
Forty-eight patients who underwent right ventricular outflow tract reconstruction with Monocusp Ventricular Outflow Patch (MVOP) fifty-five times and survived surgery, were reviewed in this study. Mean age at surgery was 6.4 years-old and mean follow-up interval was 75.2 months. There was no late death, however reoperation was performed 7 times. Freedom from reoperation rate was 97.2% and 80.7% after 5 and 10 years after surgery, respectively. The main cause for reoperation were right ventricular outflow obstruction RVOTO (5 cases). All of the RVOTO occurred at the distal end of the anastomosis. However, there was no RVOTO in patients who underwent RVOTR with MVOP during the past ten years. So, we considered the cause of RVOTO a technical problem. Pulmonary regurgitation was one to two degree early after surgery, and had worsened by almost two or three degrees more than 5 years after surgery. Moreover, five of six patients who underwent cardiac catheterization more than 10 years after surgery had three degrees of pulmonary regurgitation as well as a large CTR. In conclusion, according to long-term results, especially more than 10 years post operatively, pulmonary regurgitation was the most important problem.
Sugita
T
T
Department of Cardiovascular Surgery, Tenri Hospital, Nara, Japan.
Matsumoto
M
M
Ogino
H
H
Nishizawa
J
J
Matsuyama
K
K
Yoshimura
S
S
Yoshioka
T
T
Tokuda
Y
Y
Matsumura
M
M
Suda
K
K
Ueda
Y
Y
D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008297:Male; D012189:Retrospective Studies; D014694:Ventricular Outflow Obstruction / Q000503:physiopathology / Q000601:surgery*