How should you apply a tourniquet?

Applying a tourniquet 2-3 inches above the wound is essential for effectively controlling severe bleeding. The correct placement ensures that the tourniquet compresses the blood vessels responsible for the hemorrhage while sparing the surrounding tissue and minimizing the risk of additional damage. By positioning it above the wound, the tourniquet can more effectively occlude blood flow to the affected area, allowing for better control of bleeding until professional medical assistance can be obtained.

The other options are less effective for various reasons. Placing a tourniquet directly at the wound site may not adequately compress the blood vessels, as the wound itself could obstruct proper placement. Applying it on the opposite side of the body is incorrect as it wouldn't effectively control the bleeding in the necessary area. Lastly, positioning the tourniquet at the heart level does not provide the necessary elevation above the wound to ensure that blood flow is cut off effectively. Thus, the identified placement is critical for successful management of severe bleeding scenarios.