[Experimental study of the aortic annulus enlargement (author's transl)].
D000818:Animals; D001021:Aortic Valve / Q000601:surgery*; D004285:Dogs; D006350:Heart Valve Prosthesis / Q000379:methods*; D008943:Mitral Valve / Q000601:surgery; D011183:Postoperative Complications / Q000517:prevention & control; D013552:Swine