Fainting occurs when the blood supply to the brain is momentarily inadequate, causing the patient to lose consciousness. The loss of consciousness is usually brief.
Fainting can have no medical significance or the cause can be a serious disorder. Therefore, treat loss of consciousness as a medical emergency until the signs and symptoms are relieved and the cause is known.
Check for breathing. Position your ear over the person's mouth to listen for breathing sounds. If breathing has stopped, the problem is more serious than a fainting spell. Initiate cardiopulmonary resuscitation (CPR). Get emergency medical care.
Help restore blood flow. If the person is breathing, restore blood flow to the brain by raising the person's legs above the level of the head. Loosen belts, collars or other constrictive clothing. The person should revive quickly. If the person doesn't regain consciousness in 1 to 2 minutes, dial or call for emergency medical assistance.
Clean the wound. Rinse out the wound with clear water. Use tweezers cleaned with alcohol to remove the particles. There's no need to use hydrogen peroxide, iodine or an iodine-containing cleanser. These substances irritate living cells. If you choose to use them, don't apply them directly on the wound.