Updated ACG/ASGE Colonoscopy Quality Indicators

Key Takeaways for GI Nurses

• The updated ACG/ASGE guidelines now elevate bowel preparation adequacy rate and sessile serrated lesion (SSL) detection rate to priority quality indicators, meaning these metrics will likely be tracked more formally at the unit level.
• Pre-procedure nursing roles—patient education on prep instructions, timing of split-dose regimens, and phone/text reminders—directly influence the bowel prep adequacy metric and will come under increased scrutiny.
• Endoscopy nurses assisting during procedures should be aware that SSLs are often flat, pale, and mucus-capped, making them easily missed; nursing support in optimizing scope withdrawal time, patient positioning, and specimen handling can support improved detection rates.
• Documentation accuracy—capturing prep quality scores (e.g., Boston Bowel Prep Scale) and lesion pathology in the endoscopy report—will be essential for accurate quality reporting and reimbursement compliance.

Clinical Relevance

The addition of bowel preparation adequacy and SSL detection rate as priority indicators signals a shift toward more granular, evidence-based quality measurement in colonoscopy—and nursing staff sit at the center of both metrics. Bowel prep adequacy has long been recognized as a modifiable factor affecting adenoma detection, procedure completion, and patient safety, but its formal designation as a priority indicator means units will need standardized processes for patient education, prep instruction delivery, and possibly pre-procedure triage calls to identify patients at risk for inadequate prep. Nurses conducting pre-procedure calls or intake assessments are uniquely positioned to reinforce split-dose timing, dietary restrictions, and clarify instructions for patients with literacy or language barriers—interventions that directly move the needle on this metric.

The inclusion of SSL detection rate reflects growing recognition that serrated lesions are an underrecognized pathway to interval colorectal cancers, particularly in the proximal colon. Unlike conventional adenomas, SSLs are subtle and require meticulous mucosal inspection, adequate withdrawal time, and optimal bowel cleansing to visualize. This creates a direct link between the two new priority indicators: poor bowel prep undermines the endoscopist's ability to detect serrated lesions, compounding quality gaps. For nursing teams, this reinforces the operational importance of prep optimization protocols, as well as awareness during specimen handling to ensure accurate pathology labeling and tracking, since misidentified or lost SSL specimens can distort quality data and, more importantly, affect patient surveillance intervals.

From a professional development standpoint, GI nurses should anticipate more emphasis on quality indicator education during onboarding and continuing education, as accreditation bodies and payers increasingly tie reimbursement and unit performance reviews to these metrics. Nurses may also be asked to participate in quality improvement initiatives, such as auditing prep instruction compliance or tracking documentation completeness for Boston Bowel Prep Scale scoring, positioning nursing staff as active stakeholders—not just support personnel—in meeting these updated benchmarks.

Bottom Line

For busy GI nurses, the key message is that bowel prep quality and serrated lesion detection are no longer secondary concerns—they are now formal priority indicators that reflect directly on unit performance and patient outcomes. Strengthening patient education around bowel prep and supporting meticulous procedural technique will be essential contributions nurses can make to help their units meet these updated ACG/ASGE benchmarks.