Warmed hospital blanked are the most commonly used treatment for hypothermia in recovery rooms and elsewhere. An application of warmed hospital blankets consists of placing six to eight warmed blankets in succession of top of a patient. Almost all patients receive at least one application; it is estimated that 50 percent of the postoperative patients require more than one application. The advantages of warmed hospital blankets are that are simple, safe, and relatively inexpensive. The main disadvantage is that they cool quickly, provide only insulation, and require the patient’s own body heat for regenerating warmth.