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Higher Risk of Repeat Stone Surgery in Stone Formers With Concomitant Bowel Disease: Single-Center Long-Term Analysis
Margaret A Knoedler1, Shuang Li1, Shuhei Hirano1
1Department of Urology, University of Wisconsin School of Medicine and Public Health, Madison, WI.
Insights
Patients with bowel disease, particularly those with prior bowel resection or bypass, face a higher risk of repeat stone surgery. This risk was not elevated for inflammatory bowel disease or other bowel conditions.
Area of Science:
- Urology
- Gastroenterology
- Surgical Outcomes
Background:
- Bowel disease is a known risk factor for stone formation.
- The impact of different types of bowel disease on the need for repeat stone surgery is not well understood.
Purpose of the Study:
- To compare the risk of repeat stone surgery in patients with and without bowel disease.
- To investigate if different types of bowel disease influence the need for repeat stone surgery.
Main Methods:
- Retrospective analysis of surgical stone patients.
- Categorization of bowel disease into inflammatory bowel disease (IBD), bypass, resection, and other.
- Comparison of demographics, stone disease, and recurrent stone events using survival analyses.
Main Results:
- 24% of surgical stone patients had bowel disease.
- Patients with bowel disease were older and more likely female.
- Bowel resection and bypass were significantly associated with increased repeat stone surgery (P < .001 and P = .002).
- IBD and other bowel diseases did not show increased risk.
Conclusions:
- Patients with bowel disease, specifically prior bowel resection and bypass, have a higher risk of repeat stone surgery.
- The type of bowel disease is a critical factor in determining the risk of recurrent stone surgery.
Objective:
To identify the need for repeat stone surgery in patients with and without bowel disease. Few studies have compared risks between different types of bowel disease and whether their need for repeat stone surgery differs.
Methods:
From our IRB-approved study, we identified patients with and without bowel disease. We categorized patients' bowel disease into 4 categories: inflammatory bowel disease (IBD), bypass procedures, bowel resection, and bowel disease not otherwise specified (eg, irritable bowel syndrome, celiac disease). Differences between patient demographics, stone disease, and recurrent stone events for patients with and without bowel disease were compared using univariate and multivariate survival analyses (SPSS 25).
Results:
Of all surgical stone patients (2011), 484 (24%) had some type of bowel disease. Compared to patients without bowel disease, patients with bowel disease presented with stones at an older age (62.2 ± 14.5 vs 58.4 ± 15.3 years; P <.001) and were more likely to be female (56 vs 46%; P <.001). Patients with bowel disease required more repeat stone surgery than those without bowel disease (31% vs 23%, P <.001). In multivariate analysis, patients with bypass and bowel resection were associated with more repeat surgery than patients without bowel disease (P <.001, P = .002, respectively). Patients with IBD and bowel disease not otherwise specified did not have higher risk for repeat surgery than patients without bowel disease.
Conclusion:
Surgical stone patients with bowel disease, specifically those with prior bowel resection and bypass, had a higher risk of repeat stone surgery over time than stone formers without bowel disease.
Data Availability:
The data sets generated and analyzed during the current study are available from the corresponding author on reasonable request.
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