What happens when a tourniquet is left on too long during a venepuncture?

Answer 1

it causes a hematoma. Yes it does, but it also causes hemoconcentration & hemolysis.
If a tourniquet is at high enough pressure and left on long enough, the tissues distal to the tourniquet may develop ischemia and gangrene, resulting in loss of those tissues.

Answer 2

If a tourniquet is left on too long and has been applied tight enough to occlude blood flow the tissue of the limb past the application site will have no supply of vital nutrients and oxygen and will eventually die. This can result in loss of the effected limb. The good news is recent research suggests that during the typical limited time they are usually left on is not long enough to frequently cause loss of limb.

Answer 3

A tourniquet cuts off blood supply to that area. If it stays on to long you could kill that part of the body. For example if you tie one at the thigh, then from the thigh down may have to be amputated.

Answer 4

Can cause irreversible tissue damage and give an inaccurate result due to heamoconcentration. Also painful for the client.

Answer 5

its cutting the blood flow off to that limb, so its cutting off the circulation to that arm, but your at the doctors and it will be taking off in time so nothing will happen :)

Answer 6

1. pain
2. hyperemia
3. hypoxia
4. hyperthermia
5. stiffness
6. blistering
7. ischemic necrosis
8. compartment syndrome