The aims of the study were to investigate the risk for and prevalence of pressure ulcers in different medical care groups, to discover if patients at risk for or with pressure ulcers are allocated appropriate pressure ulcer preventions and to investigate which variables are associated with appropriate pressure ulcer preventions. A cross-sectional survey design was used and followed the methodology developed by the European Pressure Ulcer Advisory Panel. A total of 612 patients participated in the study. The prevalence of pressure ulcers was greatest in geriatric care, followed by intensive care, acute care and neurological care. The majority of patients at risk for or with pressure ulcers did not receive appropriate preventative measures, either while they were in bed or in a chair. Significant variables associated with appropriate preventions in bed were intensive care, geriatric care, a low Braden score, a low score in the subscale activity and a long hospital stay.