chapter  44
Prosthetic Heart Valves
Pages 12

Each different type of prosthesis is manufactured in several different sizes, ranging from 19 to 33 mm in diameter. Aortic prostheses are generally available in odd-numbered sizes from 19 through 31 and mitral and tricuspid prostheses, in odd-numbered sizes from 23 through 33.The size refers to the external diameter of the sewing ring in millimeters.The size of the prosthetic valve greatly influences its hemodynamics, particularly in the aortic position.