in artificial aortic valve for use in situations wherein the surgical patient 39 s normal aortic valve is to be left in loco in contrast the prostheses p 39 p 34 of fig3 and 4 respectively are equipped with built in artificial aortic valves v 39 v 34 the valve v 39 being of the bioprosthetic type and the valve v 34 being of the mechanical valve type the aortic prosthesis according to the present invention is shown in fig5 and 6 generally at 10 basically the prosthesis 10 is of a tubular construction formed by an annular wall of a crimped material similar to that of conventional prostheses shown in fig2 4 but the annular wall of the prosthesis 10 at its root end 10 39 is formed with annularly spaced bulges so as to have a greater effective diameter than the remaining lengthwise extent of the prosthesis 10 in at least generally similar correspondence to the natural biological configuration of the sinuses of valsalva in the human aorta of fig1 the prosthesis 10 of fig5 and 6 is not equipped with an artificial aortic valve for use in surgical procedures wherein the patient 39 s normal aortic valve v is not removed fig7 illustrates an alternative embodiment of the aortic prosthesis of the present invention generally indicated at 110 wherein a bioprosthetic valve prosthesis v 39 is affixed at the terminal end of the bulged root wall portion 110 39 of the prosthesis 110 similarly another embodiment of the present aortic prosthesis is indicated at 210 in fig8 with a mechanical valve prosthesis v 34 affixed to the annular root wall portion 210 39 of.