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Background and study aims Existing guidelines recommend continuation of aspirin therapy prior to outpatient endoscopic procedures, as it reduces peri-procedural cardiovascular events and is not associated with an increased risk of bleeding. Despite this, many patients at our institution inappropriately alter their aspirin prior to endoscopy. We sought to identify why this occurs and implement an intervention that could reduce improper aspirin alteration.   Patients and methods All adult patients undergoing outpatient endoscopy at the Medical University of South Carolina were administered a survey querying demographics, aspirin use, endoscopic procedure, thromboembolic risk factors, and pre-procedural aspirin alteration, if any. An intervention involving revised written and verbal instructions as well as an automated voicemail aimed at ensuring patients adhere to guidelines was then undertaken. The same survey was administered after the intervention to assess for improved adherence.  Results A total of 240 patients from the initial survey reported daily aspirin use, of which 114 (47.5 %) inappropriately altered aspirin therapy. A total of 182 patients from the post-intervention survey reported daily aspirin use, of which 66 (36.3 %) inappropriately altered aspirin therapy. This was a statistically significant reduction (P = 0.04), which included adjustments for age, sex, procedure type, and thromboembolic risk.   Conclusions A high proportion of patients at our institution inappropriately alter aspirin therapy prior to outpatient endoscopy. The reasons for this behavior include patient self-direction, misguidance from staff, and instruction from other physicians. This alteration can be reduced significantly through an intervention that educates both patients and staff on continuation of aspirin therapy prior to outpatient endoscopy.

Multimodal intervention for avoiding inappropriate cessation of aspirin prior to outpatient endoscopy