[Echocardiographic evaluation of the function of the Björk-Shiley valve prosthesis].
D000328:Adult; D001021:Aortic Valve / Q000601:surgery; D004452:Echocardiography; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery
Echokardiografické hodnocení funkce Björk-Shileyho chlopenních náhrad.