Blood and free throws

[hoopguy]

Just saw this incident recently and it got me to thinking. Player A receives a pass underneath the basket and player B who is behind player A fouls player A so hard he gets knocked down hard to the ground landing on his front with his elbow contacting the court hard enough to cause bleeding. The foul would definitely qualify for an intentional foul and potentially a flagrant.

First thought about the flagrant... What would be the correct mechanics in reporting this if calling a flagrant personal foul? Do I signal the X and then when I report speak to coach and inform him that player B has been disqualified due to the flagrant personal foul? Do I inform the player at the spot that he has committed a flagrant personal foul? Is this the type of foul where you would sell the call at the spot? Does anyone use the baseball ump ‘your outa here’ signal?

Second, about the blood. I believe in this situation, I would give player A as much time and medical help as is needed to stop the bleeding so that he could shoot the free throws. Would this be correct by rule?