You put it on and leave it on until the person gets to the hospital.
60 seconds
According to CLSI the tourniquet should not be left on for more than a minute. If a suitable vein has not been found, remove the tourniquet, leave it off for two minutes, then reapply the tourniquet to look for suitable veins and/or perform the venipuncture.
on minutes no more than that .
A tourniquet should be left on the arm for no longer than 1-2 minutes for a blood draw. Leaving it on for longer can lead to complications like tissue damage, nerve injury, or blood pooling. It's important to release the tourniquet once the needle is inserted to prevent any adverse effects.
A tourniquet should not be left on for longer than one minute. Prolonged use can lead to complications such as tissue damage and fainting.
A tourniquet should not be removed at all. Tourniquets are a LAST RESORT method. They are hard to apply, they cause a lot of pain, and they can lead to the loss of any limb below wherever the tourniquet was applied. However, if the choice is your LIFE or your LIMB, choose the life. Apply the tourniquet and tighten it until the bleeding stops. Secure the stick to make sure the tourniquet does not loosen and DO NOT TOUCH IT. Get the victim to a hospital immediately. Once there, the doctors and nurses are trained in how to remove tourniquets and treat the wounds. If you leave a tourniquet on too long, the person might lose their arm/leg/whatever. If you take it off too soon, they can easily bleed to death.
A tourniquet cuts off blood flow. The arm or leg will not immediately become gangrenous. First, the skin would feel numb. The arm would begin to throb as if it 'went to sleep', with tingling, burning, etc. The person would likely be wiggling their fingers to get feeling back and would remove the tourniquet at that point, if lucid and not in shock from bleeding. If the restriction to blood flow was left on, the skin color and temperature would begin to change. The fingertips (or toes) would die first.
It would. Remember, almost anything that can cut off blood flow will make a good tourniquet in an emergency. Just don't leave it on too long.
how long should a tourniquet stay on a patients arm:There is no clearcut rule as to how long a tourniquet may be inflated safely, although various investigators have addressed effects of ischemia on muscle and nerve to define a relatively "safe" period of tourniquet hemostasis. In practice, safe tourniquet inflation time depends greatly on the patient's anatomy, age, physical status, and the vascular supply to the extremity. Unless instructed otherwise, report to the surgeon when 60 minutes of tourniquet time has elapsed. There is general agreement that for reasonably healthy adults, 90 minutes should not be exceeded without releasing the tourniquet for a short time.
2-3 minutes
patient is allergic to latex
Tie a tourniquet on the arm (over the humerous bone). Release the tourniquet every half hour and tie again till you reach the operation theatre. Don't give orally anything for it may interfere in giving general anesthesia.