Answer:
Laser assisted end-to-side anastomosis in rats versus conventional method, normal anastomotic tension : Patency rate with laser was equivalent but there was a significantly higher aneursym rate.
Laser assisted repair of arterial bypass around the carotid with turbulent flow but low anastomotic tension: Patency rate better with laser and aneurysm rate negligible.
Laser bonding creates an anastomosis with initially less strength than the all-suture type hence more aneursyms in normal anastomotic tension situations.
But with laser there is no suture to promote thrombosis, hence better patency in low anastomotic tension situations.