Simplified techniques of valve replacement.

After an extensive trial of many different suture techniques for implanting valvular prostheses, we have recently returned to using a simple, continuous suture of monofilament polypropylene. We believe this technique has many theoretical and practical advantages. Valvular implantation takes less time and is even more secure than when individual sutures are used. In addition, the need for porous felt pledgets, which may harbor bacteria, is eliminated. This simple technique facilitates implantation in the mitral and aortic positions.