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  • Title: Functional single ventricle with extracardiac total anomalous pulmonary venous connection.
    Author: Nakata T, Fujimoto Y, Hirose K, Osaki M, Tosaka Y, Ide Y, Tachi M, Sakamoto K.
    Journal: Eur J Cardiothorac Surg; 2009 Jul; 36(1):49-56; discussion 56. PubMed ID: 19375345.
    Abstract:
    OBJECTIVE: The purpose of this study is to evaluate the surgical repair of functional single ventricle and extracardiac total anomalous pulmonary venous connection (TAPVC). METHODS: Between January 1998 and December 2007, 26 consecutive patients underwent surgical repair of extracardiac TAPVC. Their characteristics were as follows: median age, 34 (range 0-744) days; median weight 3.2 (range 2.0-9.6) kg; supracardiac TAPVC, 11 patients; infracardiac, 5; mixed, 10; right atrial isomerism, 24; pulmonary atresia, 16; and obstructed TAPVC, 17. Concomitant procedures included systemic-to-pulmonary shunt in 9 patients, pulmonary artery banding in 5, ventricle-to-pulmonary artery shunt in 1, Norwood procedure in 1, bidirectional Glenn in 9, and Fontan procedure in 1. RESULTS: The overall survival after the repair of TAPVC was 58% (95% confidence interval [CI], 39-77%) and 54% (95% CI, 34-73%) at 1 and 5 years, respectively. Of the 14 survivors (supracardiac, 9; infracardiac, 4; and mixed, 1), 12 underwent Fontan completion; 1, bidirectional Glenn; and 1 is awaiting bidirectional Glenn. Anastomotic stenosis did not occur, but recurrent pulmonary venous ostial stenosis (PVS) was observed in nine patients. Freedom from recurrent PVS was 56% (95% CI, 34-78%) at both 1 and 5 years. Reoperation for recurrent PVS was performed in six patients; of these patients, two underwent Fontan completion, but three with bilateral and multiple PVS declined. By Cox multivariate regression analysis, mixed TAPVC (p=0.001, hazard ratio, 13.4; 95% CI, 2.8-64.4) was a risk factor for mortality, and atrioventricular valve regurgitation, which required surgical intervention at the palliative stage (p=0.024, hazard ratio, 23.4; 95% CI, 1.5-363.4) was a risk factor for recurrent PVS. CONCLUSIONS: The mid-term results of the surgical repair of functional single ventricle with supracardiac or infracardiac TAPVC are acceptable. The surgical treatment of patients with mixed TAPVC and with severe atrioventricular valve regurgitation is not promising, but can be improved.
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