Alternating pressure pads.
D000388:Air; D001512:Bedding and Linens / Q000592:standards*; D004865:Equipment and Supplies, Hospital / Q000592:standards*; D005069:Evaluation Studies as Topic; D006801:Humans; D011145:Polyvinyls; D011312:Pressure; D003668:Pressure Ulcer / Q000517:prevention & control*; D011786:Quality Control
D011145:Polyvinyls