MINDful polypectomy: a quality improvement initiative to improve complete resection of colorectal polyps.

Abstract

Incomplete resection of colon polyps is common, and the rate is significantly higher for 1to 2-cm polyps (17.3%) than for smaller, 5to 9-mm polyps (6.8%) [1]. We instituted a quality improvement measure to evaluate whether a “MINDful polypectomy” mnemonic summarizing a standardized approach for the resection of polyps ≥1cm in size would decrease the rates of incomplete resection among outpatients undergoing routine colonoscopy. This earlier version of themnemonic was: “Move polyp to 6-o’clock position; Inspect carefully, consider NBI (narrowband imaging); Note whether borders are completely removed; Due diligence with biopsies of polypectomy edges to ensure complete resection.” The mnemonic was presented to all endoscopists, with a reminder poster placed in each endoscopy room. We measured compliance with the mnemonic based on whether biopsy of the polypectomy edge was completed for polyps ≥1cm. Over 1 year, we found compliance with the mnemonic for 38 of 230 polyps ≥1cm in size. Among the endoscopists who followed the protocol, evidence of incomplete resection was found in 4 of the 38 patients (10.5%). Furthermore, of the 38 patients in whom post-polypectomy edge biopsy specimens were taken, 3 (7.9%) had bleeding due to biopsy of the resection site, with 2 requiring immediate endoscopic hemostasis and the third requiring hospitalization for a post-polypectomy bleed 72 hours after initial colonoscopy. Anecdotally, concern regarding bleeding was commonly cited as a reason for not following the original mnemonic. Based on this experience, we conclude that (i) the original mnemonic, promoted by education at baseline and posted reminders, was insufficient to result in consistent efforts to optimize complete polyp resection, and (ii) edge biopsies may not be a feasible way of measuring complete resection in usual practice. We propose that further research is required to identify practices for reducing and measuring incomplete resection. We present a modified polypectomy protocol, coupledwith a visual mnemonic to serve as a memory aid, as one potential approach to consider in future studies (● Fig.1).