Experts say that when the amount of bleeding exceeds 40% of the body's blood volume, life will be threatened, and the injured will become unconscious and breathe shallow and fast, requiring emergency rescue. According to experts, the "pressurized bandage hemostasis method" should be used first when traumatic bleeding occurs. This method is suitable for wounds on the head, body, limbs and all parts of the body.
The method of hemostasis is to cover the wound with a clean and sterile thicker gauze, and apply pressure directly on the dressing with your hands; at the same time, let the injured sit or lie down, raise the injured part, and try to support it; bandages, triangles, etc. can also be used. The bandage is tightly wrapped and compressed to help stop the bleeding. After dressing the extremities, the blood circulation in the fingers or toes must be checked, and the extremities should be observed for cyanosis or swelling.
The second method is "finger pressure hemostasis", which is to press the upper part of the bleeding wound (the direction of blood flow) with fingers, so that the blood vessels are pressed against the nearby bones, thereby blocking the blood flow and achieving the purpose of hemostasis. Because it will affect the blood supply of the whole limb tissue, the use of this method should be limited, and the pressure should not exceed 10 minutes each time.
If the extremities are bleeding heavily, it is best to use the "tourniquet hemostasis method". Experts say that this method is the most effective to stop bleeding, but it is easy to damage the limbs and affect the later repair.
The specific method is: elevate the affected limb for 12 minutes before putting on the tourniquet. On the upper part of the bleeding site, such as the upper third of the upper arm or thigh, first wrap the skin with a towel or cotton pad, and then stretch and tighten the tourniquet Wrap it around towels and other things, neither too tight nor too loose, at most two times, until the bleeding stops. It is best to use elastic rubber tubes for the tourniquet, and it is strictly forbidden to use iron wires, wires, etc. to make the tourniquet. When loosening the tourniquet, attention should be paid to observing the bleeding. If there is not much bleeding, other methods can be used to stop the bleeding, so as not to compress the blood vessels for too long and cause limb necrosis. Branch bleeding must be sent to the hospital for surgical treatment as soon as possible after initial hemostasis.
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