title: Surgical treatment for aortic stenosis associated with narrow annulus.
mesh_terms: D000293:Adolescent; D001021:Aortic Valve / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000151:congenital / Q000601:surgery*; D002404:Catheterization; D002648:Child; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D007423:Intra-Aortic Balloon Pumping; D008297:Male; D008722:Methods; D011183:Postoperative Complications