Endoscopic Capsule Retention: Frequency, Causes and Risk Factors Analysis in 244 Consecutive Procedures
Carlos Saul1, Guilherme Pereira Lima1, Abdon Pacurucu Merchan1
1Hospital Universitário Canoas. Canoas, Brazil. Hospital Universitário Canoas Canoas Brazil.
Acta Gastroenterologica Latinoamericana
|December 4, 2025
Summary
Capsule retention in small bowel endoscopy is a significant complication. Identifying risk factors like strictures and tumors is crucial for preventing definitive capsule retention, especially in patients with inflammatory conditions.
Area of Science:
- Gastroenterology
- Medical Devices
- Diagnostic Imaging
Background:
- Capsule endoscopy is a key tool for small bowel examination.
- Capsule retention is the primary complication associated with this procedure.
Purpose of the Study:
- To determine the frequency of capsule retention.
- To identify risk factors contributing to capsule retention.
Main Methods:
- Analysis of 244 consecutive capsule endoscopy examinations.
- Defined definitive retention (≥3 weeks) and temporary retention (spontaneous elimination).
- Identified risk factors including inflammatory strictures, tumors, and large diverticula.
Main Results:
- Capsule retention occurred in 7 out of 244 procedures (2.9%).
- Definitive retention was observed in 5 patients (2.0%), all with identified risk factors.
- Temporary retention occurred in 2 patients.
- No retention was noted in patients without risk factors.
Conclusions:
- Capsule retention is directly linked to the presence of risk factors.
- Approximately 10% of patients with small bowel risk factors experienced definitive retention.
- Pre-procedure identification of risk factors, particularly inflammatory strictures, is vital.
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