Related Experiment Video
Updated: Dec 25, 2025
Author Spotlight: Developing a Rat Model for Pouchitis Research and Treatment
Published on: May 31, 2024
Conditional Survival After IPAA for Ulcerative and Indeterminate Colitis: Does Long-term Pouch Survival Improve or
Adina E Feinberg1, Olga Lavryk1, Alexandra Aiello2
1Department of Colon & Rectal Surgery, Cleveland Clinic, Cleveland, Ohio.
Background:
Risk factors for pouch survival may or may not have a linear relationship with pouch loss over time. Conditional survival is a method to describe these nonlinear time-to-event relationships by reporting the expected survival at various time points.
Objective:
The aim of this study was to calculate conditional pouch survival based on occurrence of risk factors for pouch loss.
Design:
This was a retrospective study from an institutional database.
Settings:
The study was conducted at the Cleveland Clinic Foundation.
Patients:
Patients with ulcerative or indeterminate colitis who underwent index IPAA construction between 1986 and 2016 were included.
Main Outcome Measures:
Patients were stratified based on postoperative anastomotic leak, abscess, or fistula occurrence. The Kaplan-Meier method with conditional survival was used to estimate overall and cause-specific survival at 10 years.
Results:
A total of 3468 patients underwent IPAA during the study period. The overall 10-year pouch survival rate was 0.94 (95% CI, 0.93-0.95), and after 1 year the conditional pouch survival increased to 0.95 (95% CI, 0.94-0.96), after 3 years to 0.97 (95% CI, 0.96-0.98), and after 5 years to 0.98 (95% CI, 0.98-0.99). A total of 122 patients (3.5%) developed anastomotic leak, and the 10-year IPAA survival in patients with leak was 0.85 (95% CI, 0.77-0.93). In this group, after 1 year of pouch survival, the conditional pouch survival increased to 0.89 (95% CI, 0.82-0.96) and after 3 years to 0.98 (95% CI, 0.94-1.00). A similar pattern was seen for IPAA with postoperative abscess. The conditional survival curve was stable over time for patients with a fistula.
Limitations:
This was a retrospective, single-institution study.
Conclusions:
Overall conditional pouch survival improved over time for patients with postoperative anastomotic leak and abscess. These novel findings can be useful to counsel patients regarding expectations for long-term pouch survival even if they develop leaks and abscesses. See Video Abstract at http://links.lww.com/DCR/B217. SUPERVIVENCIA CONDICIONAL DESPUÉS DE ANASTOMOSIS CON BOLSA ÍLEO ANAL, PARA COLITIS ULCERATIVA E INDETERMINADA: ¿LA SOBREVIDA DE LA BOLSA A LARGO PLAZO, MEJORA O EMPEORA CON EL TIEMPO?: Los factores de riesgo para la sobrevida de la bolsa, pueden o no tener una relación lineal con la pérdida de la bolsa y con el tiempo. La supervivencia condicional es un método para describir estas relaciones no lineales de tiempo, hasta el evento informando la supervivencia esperada en varios puntos de tiempo.El objetivo de este estudio fue calcular la supervivencia condicional de la bolsa, en función de aparición de factores de riesgo para la pérdida de bolsa.Estudio retrospectivo de una base de datos institucional.Cleveland Clinic Foundation.Pacientes con colitis ulcerativa o indeterminada, sometidos a una anastomosis de bolsa íleo anal, de 1986 a 2016.Los pacientes fueron estratificados en función de la fuga anastomótica postoperatoria, absceso o aparición de fístula. El método de Kaplan Meier con supervivencia condicional, se utilizó para estimar la supervivencia general y la causa específica a los 10 años.Un total de 3.468 pacientes fueron sometidos a anastomosis ileal con bolsa anal durante el período de estudio. La tasa de supervivencia global de la bolsa a 10 años, fue de 0,94 (0,93 a 0,95), y después de 1 año, la supervivencia condicional de la bolsa aumentó a 0,95 (0,94 a 0,96), después de 3 años a 0,97 (0,96 a 0,98) y después de 5 años a 0.98 (0.98 - 0.99). Un total de 122 (3,5%) pacientes desarrollaron fuga anastomótica, y la supervivencia de la anastomosis de bolsa íleo anal a 10 años en pacientes con fuga fue de 0,85 (IC del 95%: 0,77 a 0,93). En este grupo, después de 1 año de supervivencia de la bolsa, la supervivencia condicional de la bolsa aumentó a 0,89 (IC del 95%: 0,82 a 0,96), y después de 3 años a 0,98 (IC del 95%: 0,94 a 1). Se observó un patrón similar para la anastomosis de bolsa íleo anal con absceso postoperatorio. La curva de supervivencia condicional fue estable en el tiempo para los pacientes con una fístula.Estudio retrospectivo, de una sola institución.La supervivencia condicional global de la bolsa, mejoró con el tiempo para pacientes con fuga anastomótica postoperatoria y absceso. Estos nuevos hallazgos pueden ser útiles para aconsejar a los pacientes con respecto a las expectativas de supervivencia de la bolsa a largo plazo, incluso si desarrollan fugas y abscesos. Consulte Video Resumen http://links.lww.com/DCR/B217. (Traducción-Dr Fidel Ruiz Healy).
Related Concept Videos
01:21Inflammatory Bowel Disease V: Surgical Management
Here are some common surgical interventions for IBD:
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
01:30Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
01:17Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
01:29Drugs for Treatment of Ulcerative Colitis in IBD
01:30Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...