When the bandage is applied, the split ends are crossed so that they may be tied over different parts of the head and thus hold the bandage more securely in place. For instance, in the jaw bandage the uncut middle part is placed over and under the chin, the ends crossed, and two ends tied at the back of the neck and two over the top of the head.
Roller Bandages—Roller bandages are a little more difficult to put on so that they will stay on, and at the same time be smooth and have a uniform pressure on the part of the body bandaged. This last point is most important.
Rules for applying roller bandages:
1. Lay external surface of bandage against the part to be bandaged, holding the roll in the right hand, unless you are left-handed, unrolling it as a roll of carpet unrolls to show you a pattern in the shops.
2. Hold the loose end with the left hand and catch it with two or three turns of the bandage before beginning to put on the bandage. Never have more than four or five inches of the bandage unrolled at once.
3. Be careful to have the same pressure from every turn of the bandage. This is most important if the bandage is to stay on and be comfortable and not interfere with the circulation of the blood. Judgment of the pressure is only acquired by practice, and therefore you should practice enough to acquire this before the real emergency happens.
4. Do not bandage too tightly. Blueness of the skin above or below the bandage always means the bandage must be loosened. Remember in applying a bandage immediately after an injury that considerable swelling may occur later, and apply your bandage more loosely than if bandaging after the swelling has gone down. Always loosen a bandage that is tight enough to cause pain or blueness.
5. Bandage from below upward. That is, from the tip of a finger or toe toward the hand or foot. From the hand or foot toward the shoulder or groin. This is in the general direction of the return of the circulation.