What medical intervention might be advised for severe bleeding during a call?

Applying direct pressure to the wound is a critical intervention for managing severe bleeding. This technique is effective because it helps to control blood loss by encouraging clot formation at the site of injury. When direct pressure is applied, it compresses the blood vessels and can significantly reduce the amount of blood escaping from the wound, which is essential in preventing shock and maintaining blood pressure.

In emergency situations, where severe bleeding poses a life-threatening risk, it is crucial to act promptly. Direct pressure is the first-line response because it is simple to perform and does not require specialized equipment, making it an immediate and accessible method for anyone to apply.

While raising the injured limb above the heart may help reduce blood flow to the area, it is not as effective alone as direct pressure. Encouraging the person to walk around is inappropriate and may exacerbate bleeding. A cold compress can help with swelling or pain relief but will not effectively stop severe bleeding. Therefore, the application of direct pressure is the most appropriate intervention for severe bleeding.