A pilot study evaluating a new low-volume colon cleansing procedure for capsule colonoscopy

Area of Science:

• Gastroenterology
• Endoscopy
• Medical Devices

Background:

• Colon capsule endoscopy (CCE) offers an alternative to traditional colonoscopy.
• Current CCE bowel cleansing often uses sodium phosphate, raising safety concerns.
• A novel, low-volume, sodium phosphate-free polyethylene glycol (PEG) preparation was developed.

Purpose of the Study:

• To evaluate the feasibility and efficacy of a new PEG-based bowel preparation for CCE.
• To assess colon cleanliness, procedure completion rates, and polyp detection accuracy.
• To compare two variations of the PEG preparation regimen.

Main Methods:

• Two groups of patients underwent CCE using different PEG + ascorbic acid bowel preparation protocols.
• The original protocol involved specific volumes of PEG in the evening and morning, with optional boosts.
• The modified protocol increased morning intake and adjusted the timing of the second boost.

Main Results:

• Both PEG preparation regimens achieved good or excellent colon cleanliness in over 80% of patients.
• The overall CCE completion rate, identified by visualizing the hemorrhoidal plexus, was 76%.
• Capsule sensitivity and specificity for detecting polyps ≥ 6 mm were high, comparable to optical colonoscopy.

Conclusions:

• A PEG + ascorbic acid bowel preparation is effective for CCE, achieving adequate cleansing and high polyp detection accuracy.
• This sodium phosphate-free regimen is a suitable alternative, especially for patients with contraindications to sodium phosphate preparations.