Pain management practices and short-term patient outcomes in nine acute care hospitals in Milwaukee, Wisconsin, were studied at two points in time. One-and-a-half years after the Agency for Health Care Policy and Research's (AHCPR) Clinical Practice Guideline on Acute Pain Management was published, data from 330 adult surgical patients were collected (Time I). These data were contrasted with data from 373 adult surgical patients collected 2 years later (Time II). There were significant increases in the percentage of patients who reported being taught how to report pain using a pain rating scale and about setting a pain goal preoperatively; in the percentage of patient hospital records with at least one documented numeric pain rating; and in the percentage of patients who received analgesics by intravenous administration. However, pain management practices continued to differ from recommendations in the AHCPR guideline. No significant improvement was noted in the short-term outcomes of patient-rated pain or patient satisfaction with pain management. Availability of well-published guidelines alone may be insufficient to ensure comprehensive adoption of guidelines that are multidimensional in nature and to obtain improvements in patient outcome.