Why would applying heat to a cut will benefit hemostasis (the stopage of blood flow to prevent chronic bleedin

Answer:
You are most likely refering to electrocautery which is done in a few well defined circumstances: during surgery to control bleeding, during endoscopy (EGD or colonoscopy), for the treatment of epistaxis (nose bleeds), or for removing skin lesions. There are a few other cases where it's used, but it's pretty uncommon.For chronic bleeding in the colon or stomach an endoscope (flexible stick with a camera on the end) can be passed through the rectum or mouth (respectively), the lesion can be visually identified and the electrocautery used to coagulate (clot)the blood thermally (the exterme heat causes coagulation instantly) and seal the vessels leading into and out of the lesion.

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because heat will help cauterize the wound and also thicken the blood to help it stop bleeding

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Applying heat to a cut will enrich flow of blood. I don't think it can stop it though.
Prevent bleeding, use coagulants not heat ^_^.And I don't understand your question, please rephase it.

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This is like cauterizing your wound- like warriors in the past used to do. The negative side to this is that it may cause ugly scaring, even though it stops the bleeding and heals the wound.

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It won't, it will make bleeding worse, by bringing added blood flow to the area to try to cool the area, and not allow clotting to take place. I have worked as a RN in an ER and ICU for 12 years and never put heat, only ice on a bleeding wound. Unless you are going to burn the vessel ends closed. (cautery)

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