Latest possible timing for endoscopic-assisted intervention in capsule endoscopy

Area of Science:

• Gastroenterology
• Medical Devices
• Diagnostic Endoscopy

Background:

• Delayed transit in small bowel capsule endoscopy (SBCE) can compromise examination success.
• Endoscopic-assisted intervention (EAI) is a viable treatment for delayed transit.
• Determining the optimal timing for EAI is crucial for maximizing SBCE efficacy.

Purpose of the Study:

• To investigate the latest possible timing for effective endoscopic-assisted intervention (EAI) during small bowel capsule endoscopy (SBCE).
• To establish a novel metric (T-value) for calculating the optimal timing of EAI.
• To correlate EAI timing with SBCE completion rates.

Main Methods:

• Retrospective review of 108 patients undergoing SBCE with EAI.
• Development of a T-value formula incorporating PillCam battery life and small bowel transit time.
• Group comparison based on a T-value cut-off (76.3%) to define early vs. late EAI.
• Analysis of completion rates (CR) and detection rates as primary and secondary outcomes.

Main Results:

• A significantly higher CR was observed in the early EAI group (79.2%) compared to the late EAI group (58.2%).
• Late EAI was identified as an independent predictor of incomplete SBCE (OR=2.900).
• The latest possible EAI timings were determined as 1.5 hours for PillCam SB1 and 4.6 hours for PillCam SB2/3.

Conclusions:

• Early EAI administration is associated with improved SBCE completion rates.
• The study provides specific time cut-offs for EAI based on PillCam model to optimize examination success.
• These findings offer practical guidance for clinicians performing SBCE and EAI.