What is the primary purpose of an Esmarch bandage during surgical procedures?

The primary purpose of an Esmarch bandage during surgical procedures is to constrict blood flow. This elastic bandage is typically used to achieve hemostasis by wrapping the limb in a manner that facilitates the temporary occlusion of blood vessels, thereby minimizing blood loss during surgery. By creating a tourniquet effect, the Esmarch bandage allows for a clearer surgical field and greater visibility for the surgeon, particularly in procedures involving the limbs.

The other options, while related to wound care and surgical practices, do not define the primary function of an Esmarch bandage. Providing warmth, securing dressings, or absorbing excess fluid are not the intended uses of this specific bandage and do not capture its essential role in surgical procedures.