Pulmonary annulus growth after the modified Blalock-Taussig shunt in XXXX .

@entity1 @entity215 @entity338 @entity10741 @entity849
BACKGROUND: In @entity215 ( @entity215 ), it is well known that postoperative @entity338 reduces right ventricular function during long-term follow-up. Complete repair without a transannular patch should help avoid @entity338 . Recently, primary complete repair has been preferred to the staged repair with use of a Blalock-Taussig shunt (BTS) even in neonates or small @entity1 ; however, little has been reported about the influence of a BTS on pulmonary annular growth. METHODS: We examined 40 @entity1 with @entity215 or double-outlet right ventricle with @entity849 . Twenty-one @entity1 received a BTS before complete repair, whereas 19 @entity1 underwent primary complete repair. Pulmonary annular size was measured by echocardiography before BTS, complete repair, or both, and ventricular volume was measured by cardiac catheterization. RESULTS: There were no significant differences in complete repair age or body size between the groups. Pulmonary annulus sizes in the BTS group were smaller than those in the primary repair group (Z score, -5.1    2.5 vs -3.7    1.8). After the BTS, significant annular growth (Z score, -2.8    2.1) was observed (p = 0.0028), with a significant increase in left ventricular end-diastolic volume (p = 0.015). When @entity1 with severe @entity849 (Z score > -7.0) were excluded, pulmonary annular preservation at complete repair was achieved in 64.7% (11/17) of the BTS group and 36.8% (7/19) of the primary repair group (p = 0.088). CONCLUSIONS: The @entity10741 increased the pulmonary annular size and the left ventricular volume during the 6 months before complete repair, resulting in preservation of the @entity338 .
