Optimal Bowel Preparation Method to Visualize the Distal Ileum via Small Bowel Capsule Endoscopy

Area of Science:

• Gastroenterology
• Medical Imaging
• Endoscopy

Background:

• Small bowel capsule endoscopy (SBCE) is crucial for evaluating the small intestine.
• Visualization of the distal ileum in SBCE is often impaired by residual intestinal contents.
• A standardized bowel preparation protocol for SBCE is lacking.

Purpose of the Study:

• To determine the optimal bowel preparation method for enhanced visualization of the distal ileum during SBCE.
• To compare the efficacy of different bowel preparation regimens on image quality.

Main Methods:

• Retrospective analysis of 259 SBCE procedures (July 2009-December 2019).
• Patients were divided into three groups: no preparation, polyethylene glycol, and magnesium citrate (MC).
• Image quality of the distal ileum was assessed using a scoring system focusing on staining, debris, brightness, bubbles, and mucosal visualization.

Main Results:

• No significant difference in initial image quality was observed among groups.
• The MC group (Group C) demonstrated significantly better image quality in the latter part of the observation period.
• Improved scores in bile/chyme staining, brightness, bubble reduction, and visualized mucosa were noted with MC preparation.

Conclusions:

• Low-dose magnesium citrate (MC) administered 2 hours prior to SBCE significantly enhances distal ileum image quality.
• MC bowel preparation is superior for visualizing the distal ileum compared to other methods.
• Further research is needed to optimize the timing and regimen for MC bowel preparation before SBCE.