If one suffers a serious injury such as a severed limb, proper care of the limb will be the deciding factor of whether or not the limb can be reattached. Begin by locating any individual bleeding arteries on the stump, arteries will be bleeding in pulsating spurts. Pinch off the larger arteries that are bleeding the most to decrease blood loss. The brachial artery in the arm and femoral artery in the leg carry blood into the limb, and are the major vessels you will more than likely find. Have either the victim or another person to continue pinching the arteries while you tie a tourniquet close to the end of the stump to decrease the remaining blood flow. Make sure to tie the tourniquet only moderately so you do not crush or damage vessels and tissue. Next take a needle using heavy duty thread or fishing line and tie off arteries by making several knots to in case one comes undone. Cauterizing is another method for stopping blood flow by placing a heated object at the blood site to control bleeding. After tying off bleeding arteries, thoroughly clean the stump by using a stream of water and remove any debris or damaged tissue to prevent infection. After bleeding has been controlled or slowed remove the tourniquet to assess the need for more knots. If all is well apply some type of antibiotic ointment to the stump and tightly dress the stump with gauze or cloth, which will decrease bleeding. Never leave a tourniquet on more than 90 minutes at a time to prevent damage to tissue. Place an ice pack over the dressing and give the person pain medication if available. To prevent shock feed the person animal meat or a liquid containing salt such as chicken soup, this will aid in restoring hemoglobin and plasma. To preserve the limb, wash with water and wrap in a moist cloth. Apply another layer of waterproofing material such as a plastic bag and place in a cooler of ice or refrigerate the limb immediately. Be careful not to freeze the limb and seek medical attention as soon as possible. A limb preserved in this manner can be potentially reattached for up to six hours.