If you notice someone bleeding severely, the injury can be life-threatening. But how do you know if an injury is life-threatening? A rule of thumb is if the pool of blood near the injured person is as large as a plate or corresponds to the contents of half a soda can.
- Call 112 or ask someone else to do it for you.
- Find the bleeding.
- Assert pressure against the wound with straight arms. Have bandages or fabric in between. The pressure limits or stops the bleeding.
- If you get tired or need help, ask someone to press your hands.
- Press until the ambulance staff instructs you to let go.