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Botulism due to Injection Drug Use
Journal of education & teaching in emergency medicine, 2023-04, Vol.8 (2), p.S62-S87
[Peer Reviewed Journal]
2023 Hoffman, et al. 2023 ;EISSN: 2474-1949 ;DOI: 10.21980/J8Q93B
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Title:
Botulism due to Injection Drug Use
Author:
Hoffman, Timothy
;
Yee, Jennifer
Subjects:
Simulation
Is Part Of:
Journal of education & teaching in emergency medicine, 2023-04, Vol.8 (2), p.S62-S87
Description:
AudienceThis scenario was developed to educate emergency medicine residents on the diagnosis and management of wound botulism secondary to injection drug use. IntroductionBotulism is a relatively rare cause of respiratory failure and descending weakness in the United States, caused by prevention of presynaptic acetylcholine release at the neuromuscular junction. This presentation has several mimics, including myasthenia gravis and the Miller-Fisher variant of Guillain-Barré. It may be caused by ingestion of spores (infant), ingestion of pre-formed toxin (food-borne), formation of toxin in vivo (wound-associated cases), through weaponized sources, or through inappropriately administered injections (iatrogenic). Cases of black tar heroin injection have been associated with botulism. Regardless of the etiology, prompt assessment and support of respiratory muscle strength and ordering antidotal therapy is key to halting further muscle weakness progression. Educational ObjectivesAt the conclusion of the simulation session, learners will be able to: 1) Identify the different etiologies of botulism, including wound, food-borne, infant, iatrogenic, and inhalational sources, 2) describe the pathophysiology of botulism toxicity and how it prevents presynaptic acetylcholine release at the neuromuscular junction, 3) develop a differential for bilateral descending muscle weakness, 4) compare and contrast presentations of myasthenia gravis, botulism, and the Miller-Fisher variant of Guillain-Barré syndrome, 5) describe measurement of neurologic respiratory parameter testing, such as negative inspiratory force, 6) outline treatment principles of wound-associated botulism, including antitoxin administration, wound debridement, tetanus vaccination, and evaluation for the need of antibiotics, and 7) identify appropriate disposition of the patient to the medical intensive care unit (ICU). Educational MethodsThis session was conducted using high-fidelity simulation, followed by a debriefing session and lecture on the diagnosis, differential diagnosis, and management of botulism secondary to injection drug use. Debriefing methods may be left to the discretion of participants, but the authors have utilized advocacy-inquiry techniques. This scenario may also be run as an oral board case. Research MethodsOur residents are provided a survey at the completion of the debriefing session so they may rate different aspects of the simulation, as well as provide qualitative feedback on the scenario. ResultsSixteen learners completed a feedback form. This session received all six and seven scores (consistently effective/very good and extremely effective/outstanding, respectively) other than three isolated five scores. The form also includes an area for general feedback about the case at the end. Illustrative examples of feedback include: "Really awesome debrief, breakdown of pathophysiology and clinical applications. Great work!"; "Great case with awesome learning points," and "Loved this session. Rare case but very great learning." Specific scores are available upon request. DiscussionThis is a cost-effective method for reviewing botulism diagnosis and management. The case may be modified for appropriate audiences, such as using classic illness scripting (eg, ingestion of canned foods). We encourage readers to utilize a standardized patient to demonstrate extraocular muscle weakness and bulbar symptoms to increase psychological buy-in. TopicsMedical simulation, botulism, toxicologic emergencies, toxicology, neurology, emergency medicine.
Publisher:
Department of Emergency Medicine, University of California, Irvine School of Medicine
Language:
English
Identifier:
EISSN: 2474-1949
DOI: 10.21980/J8Q93B
Source:
AUTh Library subscriptions: ProQuest Central
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