In monopolar desiccation, what is the primary mechanism of hemostasis?

In monopolar desiccation, what is the primary mechanism of hemostasis?

• A. Vasospasm of the surrounding vessels.
• B. Fibrous binding between dehydrated, denatured cells of vessel endothelium.
• C. Mechanical compression by the tissue.
• D. Formation of microthrombi by platelets migrating into tissue.

Answer: (B)

In monopolar desiccation the main way bleeding is stopped is through dehydration and protein denaturation of the tissue, which causes the endothelial cells to become dehydrated and denatured and then bind together to form a fibrous seal. This fibrous binding effectively seals the vessel and halts bleeding. Vasospasm can play a minor or incidental role in some contexts, but it is not the primary mechanism here. Mechanical compression by tissue isn’t the primary action either, and platelet-driven microthrombus formation is part of the normal coagulation cascade rather than the direct immediate effect of desiccation energy.

In monopolar desiccation the main way bleeding is stopped is through dehydration and protein denaturation of the tissue, which causes the endothelial cells to become dehydrated and denatured and then bind together to form a fibrous seal. This fibrous binding effectively seals the vessel and halts bleeding. Vasospasm can play a minor or incidental role in some contexts, but it is not the primary mechanism here. Mechanical compression by tissue isn’t the primary action either, and platelet-driven microthrombus formation is part of the normal coagulation cascade rather than the direct immediate effect of desiccation energy.