bath [AS, baeth] , (in the hospital) a cleansing procedure performed by or for patients, as needed for hygienic or therapeutic purposes, to help prevent infection, preserve the unbroken condition of the skin, stimulate circulation, promote oxygen intake, maintain muscle tone and joint mobility, and provide comfort. The bath may be a bed bath, a shower, or a partial bath, depending on the patient’s condition and preference. The bath period may be used to instruct the patient on hygienic measures, range-of-motion exercises, and general measures to promote skin health.