The six precautions for the use of a tourniquet are the binding location, proper tightness, duration, release of the tourniquet, need for padding, and making a record.

1. Binding location: When using a tourniquet, it should be tied around the limbs, avoiding the trunk, neck, or head. The standard position for the upper limb is one-third of the upper arm, and for the lower limb, it is at the junction of the middle of the thigh and one-third of the lower limb. Choosing the right location can preserve the limb.

2. Proper tightness: When using a tourniquet, it should be applied with appropriate tightness, based on the cessation of bleeding and the inability to feel a pulse at the distal end. If it is too loose, it may obstruct the return of venous blood, only pressing on the veins, leading to increased bleeding. If it is too tight, the extremities may develop bruising, even tissue necrosis. Therefore, it should be loosened appropriately and the blood circulation should be checked.

3. Duration: The time of use should be shortened, generally about an hour, and try not to exceed three hours, as prolonged use may cause tissue damage.

4. Release of the tourniquet: If the bleeding has stopped after taking oral medication or after infusion or blood transfusion, you can relax the tourniquet.

5. Need padding: Try not to wrap it directly on the skin, as it may cause local skin damage. You can use a towel or clothing as padding.

6. Make a record: After using a tourniquet, mark the time and location.