Bleeding first aid knowledge
Causes: knives, scissors and other sharp instruments, misuse or use too hastily, will lead to injury, so that blood from the surface of the wound outflow, resulting in external bleeding. When an object hits or squeezes the body, it causes deep tissue and viscera damage in the body, and blood flows into the tissue or body cavity, causing internal bleeding. The wound is a jet strong pulsating gush of bright red blood is arterial bleeding, the wound continued to the outflow of dark red blood is venous bleeding.
(1) pressure bandage hemostasis: with sterile gauze or clean towel, cloth folded into a slightly larger than the wound pad, cover the wound, in the use of bandages or cloth tape tied. However, this method should not be used when there is a suspected fracture or foreign body in the wound.
(2) finger pressure hemostasis: according to the direction of the artery, at the proximal end of the bleeding wound, the finger is pressed against the artery to temporarily stop bleeding, and it is mostly used for arterial bleeding of the head, neck and limbs.
(3) Tourniquet hemostasis: use rubber or cloth to wrap and tie up the muscle parts above the wound. Its tightness should not touch the distal arterial pulse and stop bleeding from the wound. Too loose has no hemostatic effect. Too tight will affect blood circulation, damage nerves and cause limb necrosis. It is necessary to indicate the time of tying the tourniquet in the obvious part. If it exceeds two hours, relax for 1 to 3 minutes every hour and change to finger pressure to stop bleeding. This method is used for major arterial bleeding in the extremities where compression cannot be used to stop bleeding.
(4) For patients with internal bleeding or suspicious internal bleeding, make the patient absolutely quiet, raise the lower limbs, and quickly send the patient to the nearest hospital for treatment.
(5) minor wound bleeding can be cleaned with clean water, dry back cover disinfection dressing.