Integrating intestinal ultrasound (IUS) into inflammatory bowel disease (IBD) care models can reduce the need for endoscopic procedures by more than 50%. A retrospective study published in the Journal of Crohn’s and Colitis found that as IUS adoption increased, the annual cumulative endoscopy rate for disease activity assessment dropped from 33 to 15 per 100 patients.
Impact of Intestinal Ultrasound on Endoscopy Rates
Researchers at Alfred Health in Melbourne, Australia, analyzed data from two five-year periods to determine if noninvasive imaging could effectively supplement traditional monitoring. They compared the pre-IUS era (2010–2014), which included 1,746 patients, to the IUS era (2015–2019), which included 3,080 patients.
The findings showed a significant shift in clinical practice. In the pre-IUS era, clinicians performed 576 endoscopies to evaluate IBD activity. During the IUS era, despite a larger patient population, that number fell to 474. When adjusted for the number of patients, the annual cumulative endoscopy rate dropped by 53%.
This reduction was consistent across different forms of the disease:
- Crohn’s Disease: The rate fell from 30 to 14 per 100 patients.
- Ulcerative Colitis: The rate fell from 37 to 17 per 100 patients.
- Single-Center Design: The study took place at one institution, which may limit how well these findings apply to other healthcare settings.
- Referral Bias: The retrospective nature of the study means that patient selection for specific tests may have been influenced by clinical judgment rather than standardized protocols.
- Specialized Expertise: The center had extensive experience with IUS, which may not be present in all clinical environments.
The study did not receive specific funding. Several authors disclosed receiving research funding, consultancy fees, or speaker fees from various pharmaceutical and healthcare organizations. While the study does not prove direct causality, it highlights the potential for IUS to serve as a primary monitoring tool, potentially reducing the procedural risks and costs associated with frequent endoscopic evaluations in IBD management.
Worth a look
Clinical Workflow and Disease Monitoring
During the study period, the clinical team performed 3,319 IUS examinations. Of those, 1,467 were used to evaluate active disease, while 1,852 were used to confirm sonographic remission. The study authors noted that IUS provides an objective way to monitor disease status during routine clinic visits.
By utilizing IUS, consultants were able to choose between ultrasound, fecal calprotectin testing, or endoscopy based on individual patient needs. The authors suggest that this flexibility allows for better management of endoscopy waiting lists, as invasive procedures can be reserved for cases where they are strictly necessary.
Limitations of the Research
While the data suggests a strong association between IUS implementation and lower endoscopy usage, the study authors acknowledged several limitations: