True or False: The use of vasoconstrictors is effective for long-term hemostasis.

The statement is false because vasoconstrictors, such as epinephrine, primarily serve as adjuncts to control bleeding during surgical procedures through their ability to constrict blood vessels, and their hemostatic effect is generally short-term. They work by decreasing blood flow to the area where they are applied, thus helping to manage bleeding during the immediate period of a procedure.

However, for long-term hemostasis, other factors and methods must be considered, such as suturing, cauterization, and proper wound care. Vasoconstrictors do not provide lasting effects after the immediate surgical context, as their influence diminishes once metabolized or washed away, and therefore they are not sufficient alone for long-term control of hemostasis.

The other choices suggest varying degrees of effectiveness related to specific circumstances, but the principle remains that while vasoconstrictors are useful for quick control of bleeding, they do not ensure sustained hemostasis on their own, making the statement false.