Objective:

To examine the association between colectomy and kidney complications, including acute kidney injury (AKI) and chronic kidney failure in patients with inflammatory bowel disease (IBD).

Approach:

• Study Design: An observational cohort study utilizing data from the nationwide ESPRESSO cohort, analyzing 82,051 patients with biopsy-confirmed IBD diagnosed between 1965 and 2017.
• Data Analysis: Cox proportional hazards models were employed, adjusted for age, sex, comorbidities, and education level, to assess the risks associated with colectomy.

Key Findings:

• Colectomy was associated with increased risks of AKI (adjusted hazard ratio [aHR], 2.37; 95% confidence interval [CI], 2.17–2.58) and chronic kidney failure (aHR, 1.54; 95% CI, 1.34–1.76).
• Total colectomy had higher risks for both AKI (aHR, 2.98; 95% CI, 2.70–3.28) and kidney failure (aHR, 1.89; 95% CI, 1.60–2.22) compared to partial colectomy.
• Patients with prolonged stomas faced the highest risks of AKI (aHR, 2.26; 95% CI, 1.82–2.81) and kidney failure (aHR, 2.36; 95% CI, 1.66–3.36).
• Ulcerative colitis patients had greater risks of AKI (aHR, 2.88; 95% CI, 2.55–3.24) compared to Crohn’s disease patients (aHR, 1.76; 95% CI, 1.50–2.07).
• Risks of kidney complications were highest in the first 6–12 months after colectomy but remained elevated for decades.

Interpretation:

Limitations:

• The study is observational and may be subject to confounding factors.
• Data was limited to patients with biopsy-confirmed IBD.

Conclusion:

Monitoring kidney function is crucial for patients undergoing colectomy, particularly those with total colectomy or prolonged stomas.

Sources:

• Clinical Gastroenterology and Hepatology