Daily stool frequency 5 years after IPAA

What is known

• In a cohort followed 48-120 months (mean 96) post-ileostomy closure, 26 of 40 had <6 stools/day and 14 had ≥7/day. ¹
• Series report a typical mean of ~6.2 stools/day and ~2.0 nocturnal stools after IPAA, similar in UC with and without PSC. ²
• Stool frequency decreases over the first 12-18 months as the ileum adapts, plateauing around 4-5 per 24 h in early series. ³
• Cross-sectional data show daytime frequency remains broadly stable between ~2.5 and 12.5 years of follow-up, with some patients increasing and others decreasing. ⁴

What is unknown / caveats

• No retrieved study reports frequency at exactly 5 years as a discrete endpoint; ranges are inferred from adjacent follow-up windows
• Cohorts are small and single-center with varying technique (handsewn vs stapled, S vs J pouch)
• The excerpts give means and dichotomized thresholds rather than a defined 5-year interquartile range.

References

1. Tomita R, Fujisaki S, Tanjoh K. Relationship between gastrointestinal transit time and daily stool frequency in patients after Ileal J pouch-anal anastomosis for ulcerative colitis. Am J Surg. 2004;187:76-82. PMID: 14706591.

2. Mathis KL, Dozois EJ, Larson DW, Cima RR, Sarmiento JM, Wolff BG, Heimbach JK, Pemberton JH. Ileal pouch-anal anastomosis and liver transplantation for ulcerative colitis complicated by primary sclerosing cholangitis. Br J Surg. 2008;95:882-6. PMID: 18496886.

3. Taylor BM, Beart RW J, Dozois RR, Kelly KA, Phillips SF. Straight ileoanal anastomosis v ileal pouch--anal anastomosis after colectomy and mucosal proctectomy. Arch Surg. 1983;118(6):696-701. PMID: 6847364.

4. Karlbom U, Lindfors A, Påhlman L. Long-term functional outcome after restorative proctocolectomy in patients with ulcerative colitis. Colorectal Dis. 2012;14:977-84. PMID: 22053822.

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Draft, generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct.