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The envelopment of a patient in wet sheets or blankets; a technique formerly used to treat hyperthermia. They are held against the body by large woolen blankets. The temperature of the water used for the sheets varies, depending on the purpose.
See also: pack
n a hydrotherapy technique in which the patient is enveloped in a white sheet that has been soaked in cold water and almost completely wrung out. The patient undresses and lies down securely wrapped in the wet sheet, with two wool blankets above and below him. The treatment proceeds through four phases: the tonic stage, the neutral stage, the heating stage, and the elimination stage. Entire treatment takes 1 to 3 hours.