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BACKGROUND AND AIM: Minimizing endoscopist exposure to bodily fluids is important for reducing the risk of infection transmission. This study investigated the patient‐endoscopist vertical distance necessary to minimize an endoscopist\'s facial exposure to a patient\'s visible droplets during upper gastrointestinal endoscopy and the ability of a new device to prevent droplets from reaching the endoscopist\'s face. METHODS: A model was developed to simulate a patient experiencing a forceful cough during an upper gastrointestinal endoscopy with a model endoscopist. Fluorescent dye was expelled from the model patient\'s mouth towards the model endoscopist during simulated coughs; dye adhesion to the model endoscopist\'s face was evaluated using ultraviolet light. The simulation was repeated with the model patient positioned 70–100 cm above the floor, with and without a barrier to shield the patient\'s face. The accuracy of the cough simulation model and the relationship between patient‐endoscopist vertical distance and endoscopist\'s facial exposure were evaluated. RESULTS: The flow dynamics of the cough simulation model were similar to that of an actual human cough. There was a significant inverse correlation between the patient‐endoscopist vertical distance and the model endoscopist\'s facial exposure, with positive exposures decreasing from 87% at 70 cm to 0% at 100 cm (P < 0.001). The barrier device prevented facial exposure to droplets at all distances. CONCLUSIONS: We found that positioning the patient at least 100 cm below the top of the endoscopist\'s head or using a barrier device minimized the endoscopist\'s facial exposure to visible droplets during upper gastrointestinal endoscopy.
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document_parses/pdf_json/22bad69e5dbbbc1cb47a610290449d7cefd059c8.json
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document_parses/pmc_json/PMC7461247.xml.json
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Minimizing endoscopist facial exposure to droplets: Optimal patient‐endoscopist distance and use of a barrier device
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