When applying first aid, what is essential to control external hemorrhage?

Applying direct pressure is the most crucial step in controlling external hemorrhage. This method works by physically compressing blood vessels at the site of the injury, which helps reduce blood flow and encourages clotting. By applying consistent pressure over the wound, you can significantly slow down or stop the bleeding, which is vital in preventing shock and other severe complications related to excessive blood loss.

While using a bandage can help secure the pressure on the wound, the immediate action needed to handle external bleeding effectively is the application of direct pressure. Elevating the injury can also aid in reducing blood flow to the area and might be recommended as a secondary step, but it doesn't replace the need for direct pressure. Rinsing with water is not appropriate for treating hemorrhage as it doesn't address the bleeding itself and can even introduce contaminants to an open wound.