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  • Title: Surgical management of infants with mitral valve stenosis or atresia without diminutive ascending aorta.
    Author: Kitagawa T, Hori T, Masuda Y, Kawahito T, Chikugo F, Kitaichi T, Fukuta Y, Nakagawa R, Mori K, Matsuoka S, Katoh I.
    Journal: J Med Invest; 1999 Feb; 46(1-2):59-65. PubMed ID: 10408159.
    Abstract:
    The surgical strategy in infants with mitral valve stenosis or atresia without diminutive ascending aorta remains to be established, including the potential for biventricular repair as a definitive operation. Our surgical experience of six infants with mitral valve stenosis (4 patients) or atresia (2 patients) without diminutive ascending aorta was evaluated based on three important factors: left ventricular volume; the nature of the systemic outflow obstruction; and the type of mitral valve anomaly. Two patients with systemic outflow tract diameter less than 65% of normal underwent systemic outflow tract reconstruction, and the other patients with outflow tract diameter more than 68% of normal were able to maintain systemic circulation without repair. Only one patient with mitral valve stenosis without left ventricular outflow tract obstruction underwent a successful open mitral valvotomy as a biventricular repair after first-stage palliation. The left ventricle of the other patients did not grow after first-stage palliation. Due to progressive subaortic narrowing, pulmonary artery banding should be avoided in patients with mitral atresia due to absent atrioventricular connection who are future Fontan candidates. Most patients with this lesion can be expected to become candidates for safe Fontan-type repair.
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