For vascular anastomosis sutures of choice

Answer- A. PolypropyleneVascular anastomoses require an extremely accurate closure as they must be immediately wateight at the end of the operation when the vascular clamps are removed.In many cases, some form of prosthetic material or graft may be used which will never be integrated into the body tissues and so the integrity of the suture line needs to be permanent.For this reason, polypropylene is one of the best sutures as it is not biodegradable. It is used in its monofilament form,mounted on an atraumatic, curved, round bodied needle.