What is Computerized physician order entry (CPOE)

Over three-quarters of a million people are injured or die in hospitals annually from adverse drug events. The majority of medication errors result from poorly designed health care systems rather than from negligence on the part of health care providers. Health care systems, in general, rely on voluntary reporting which seriously underestimates the number of medication errors and adverse drug events (ADEs) by as much as 90%. This chapter reviews the literature on (1) the incidence and costs of medication errors and ADEs; (2) detecting and reporting medication errors and related ADEs; (3) and the use of information technology to reduce the number of medication errors and ADEs in health care settings. Results from an analysis of data on medication errors from a regional data sharing consortium and from computer simulation models designed to analyze the effectiveness of information technology (IT) in preventing medication errors are summarized.