Final answer:
To stop or slow the formation of a hematoma, you should immediately stop, release the tourniquet, remove the tube, remove the needle and apply pressure and an ice pack if needed.
Step-by-step explanation:
When a hematoma occurs, the best thing to do is to immediately stop, release the tourniquet, remove the tube, remove the needle and apply pressure and an ice pack if needed. This should stop or slow the formation of the hematoma. A hematoma is a localized collection of blood outside the blood vessels, usually caused by an injury or trauma. By applying pressure and cold, it helps to constrict the blood vessels and reduce bleeding, thus preventing the formation of a larger hematoma.
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