William Ronald
Explorer
If I recall correctly, was not Rasputin poisoned, stabbed, shot and tied up and thrown into a river. As I recall, he was still trying to surface for air.
Boromir likely knew that he was going to die as soon as he saw the orcs running at him. People can summon a lot of will power to keep fighting through pain.
Also, I think Aragorn's healing skills were limited or very specialized. If Aragorn admitted that Frodo needed Elrond's help to deal with a splinter of the Morgul knife, it is likely that Boromir's wounds (far worse in the book than the movie) were beyond his power to heal.
Boromir likely knew that he was going to die as soon as he saw the orcs running at him. People can summon a lot of will power to keep fighting through pain.
Also, I think Aragorn's healing skills were limited or very specialized. If Aragorn admitted that Frodo needed Elrond's help to deal with a splinter of the Morgul knife, it is likely that Boromir's wounds (far worse in the book than the movie) were beyond his power to heal.