Completion rate and diagnostic yield of small-bowel capsule endoscopy: 1 vs. 2 frames per second

Area of Science:

• Gastroenterology
• Medical Devices
• Diagnostic Imaging

Background:

• Capsule endoscopy typically uses a default frame rate of 2 frames per second (fps).
• Optimizing frame rate is crucial for balancing battery life, completion rates, and diagnostic yield.
• Previous studies have not definitively established the optimal frame rate for capsule endoscopy.

Purpose of the Study:

• To compare the completion rates and diagnostic yield of capsule endoscopy at 1 fps versus 2 fps.
• To evaluate the impact of a lower frame rate on capsule operating time and battery consumption.
• To determine if a reduced frame rate compromises diagnostic accuracy.

Main Methods:

• A randomized controlled trial involving 107 patients undergoing capsule endoscopy.
• Patients were assigned to either a 1 fps or 2 fps (control) group for the entire procedure.
• Key outcome measures included completion rate, total operating time, and diagnostic yield.

Main Results:

• The 1 fps group demonstrated significantly higher completion rates (96.2% vs. 70.6%) and diagnostic yield (40.7% vs. 18.9%) compared to the 2 fps group.
• Mean total operating time was significantly longer in the 1 fps group (758 minutes vs. 456 minutes).
• No significant differences were observed in patient demographics or gastric transit time between groups.

Conclusions:

• Setting capsule endoscopy at 1 fps for the entire procedure enhances completion rates by extending operating time.
• A 1 fps frame rate maintains or potentially improves diagnostic yield compared to 2 fps.
• This lower frame rate offers a viable strategy for improving capsule endoscopy efficacy.