Morphine Equianalgesic Dose Chart in the Emergency Department

Abstract

Audience The lecture and infographic are targeted towards Emergency Medicine physicians and residents. Introduction Pain is the most common presenting symptom in the emergency department. 1 Various classes of medications are used to treat acute and chronic pain. Specifically, opiate medications are often used to relieve moderate to severe pain. About 20% of patients presenting with the chief complaint of non-cancer pain receive an opioid prescription. 2 Since there are many different types of opiates, conversion between one opioid to another has provided a great challenge in terms of addressing the balance between adequately controlling patients’ pain and preventing serious adverse effects. The lack of a readily available standard opiate equivalent guide and physicians’ limited knowledge base about morphine milligram equivalents may contribute to medication errors, insufficient treatment, addiction, and overdose. Educational Objectives The primary aim of this study was to educate residents and attending physicians about opiate equivalent medications, medication metabolism, provide usual dosages, and to provide a standardized method for converting between various opiate medications in the emergency department (ED). By the end of this session, the learner will be able to: 1) define the term, “morphine milligram equivalents;” 2) describe the relative onset and duration of action of different pain medications often used in the emergency department; and 3) convert one opioid dose to another. Additionally, we aimed to evaluate the efficacy of the lecture and the infographic in increasing physicians’ knowledge base of opioid medications and standardize the method of prescribing and converting between opioids in the ED. We designed and placed a simple, eye-catching infographic in the University of California, Irvine Emergency Department that depicted information pertaining to morphine equivalents and pharmacological properties of the opioids. We then presented a lecture on morphine equianalgesic doses, metabolism, and method for conversion between medications. In order to evaluate the functionality of the lecture and chart, we administered multiple surveys to ED providers pre- and post-lecture and placement of the chart in the ED. Our lecture and infographic included up-to-date literature and considered dose reductions, cross tolerance, and patient comorbidities. We designed the infographic to be visually appealing and simple for ease of use in a busy ED environment. Educational Methods A lecture was designed to educate emergency department physicians and residents on the properties, metabolism and techniques for conversion between various opioid medications. Following the lecture, we walked through an example question with the participants. The lecture was presented at an Emergency Department conference. Research Methods Th...