A patient care undersheet (10) includes a minimum number of support points in order to keep a bedridden patient from developing decubitus ulcers. The undersheet (10) preferably comprises a bottom layer (3) having a number of conically shaped bubble-like supports (36) and a top layer (32) comprising a non-woven fabric. An adhesive material (34) connects the non-woven fabric (32) to the bubble-like supports (36) in such a manner that under pressure the bubble-like supports (36) do not move with respect to each other. The bubble-like supports (36) are air tight so that the undersheet (10) does not collapse under the pressure of a patient's body. The area of contact (48) of the top (46) of the bubble-like supports (36) to the non-woven fabric (32) is approximately 40% of the total top surface of the undersheet (10). A patient only has to move a very small distance before a new area of skin is supported by the undersheet.
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