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To assess the prevalence, documentation and care of pressure ulcers, and the effect of teaching and prevention strategies in a 750-bed university hospital, one-day studies were conducted in 1993, 1995, and 1997. Data gathered was used to evaluate areas in need of improvement and find cost-effective ways to reduce the prevalence of pressure ulcers. The overall prevalence of ulcers decreased from 18 percent in 1993 to 10 percent in 1995 and 1997. The prevalence of nosocomial ulcers decreased from 14 percent in 1993 to 8 percent in 1995 and 6 percent in 1997. The number of nutritional consults increased from 54 percent in 1993 to 67 percent in 1997, and more than half of all patients tested had serum albumin levels < 3.5 mg/dL. Skin assessments upon admission were completed in the majority of patients. While ulcer documentation was less than adequate for the majority of patients in 1993 and 1997, care measures, e.g., placement of patients on specialty beds or mattresses and use of dressings that provide a moist environment, improved considerably. The results of this study indicate that system-wide educational efforts aimed at all levels of patient care providers, and multi-specialty prevention and care efforts can reduce the prevalence of pressure ulcers.