Illustration for Aortic Valvulotomy article, ""Figure I - Trans-aortic method of Valvulotomy (A) and the various types of valvular lesions produced (B-H). Perforation ( B & C ) occurred in 30% of animals, laceration (D & E ) in 22%, partial avulsion (F) in 15%, and extensive division ( G & H ) in 22%.
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