old think: Have your child lie down and pinch the bridge of her nose with your fingers to stop the bleeding.
new think: While she's sitting, tilt her head slightly forward and pinch the sides of her nose tightly with your fingers.
why: If a child lies down, blood goes down the back of the throat into the stomach, and her natural reaction is to vomit. But vomiting increases the pressure in the head, which causes the nose to bleed again. On the other hand, if she sits up and you squeeze her nostrils against the nose's septum, you'll put pressure on the bleeding vessels, which will prevent the blood from dripping. Placing a cold washcloth on her nose will also encourage the blood to clot. The key is to pinch the nose for a minimum of 10 minutes, and preferably up to a half hour.