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Colonoscope length and procedure efficiency.
William Dickey1, Daphne Garrett
1Department of Gastroenterology, Altnagelvin Hospital, Londonderry, Northern Ireland, United Kingdom.
The American Journal of Gastroenterology
|January 26, 2002
Summary
The length of colonoscopy instruments, whether intermediate or long, did not significantly impact procedure success rates or completion times in routine cases. Both lengths are effective for standard colonoscopies, with rare failures attributed to instrument length.
Area of Science:
- Gastroenterology
- Medical Devices
- Endoscopy
Background:
- Colonoscopy is a key diagnostic tool for colorectal diseases.
- The choice of colonoscope length may influence procedural outcomes.
- Standard adult colonoscopes vary in working length.
Purpose of the Study:
- To compare the efficacy of intermediate-length versus long-length standard adult colonoscopes in routine colonoscopy procedures.
- To evaluate differences in completion rates, procedure times, and the need for external abdominal pressure between the two instrument lengths.
Main Methods:
- A comparative study using intermediate (133 cm) and long (168 cm) videocolonoscopes on an alternate patient basis.
- Data collected included cecal intubation completion rates, procedure duration, and requirement for external abdominal pressure.
- Analysis considered patient factors such as prior colon resection and bowel preparation quality.
Main Results:
- No significant difference in completion rates (96%) or completion times (intermediate: 7.73 min, long: 8.11 min) between intermediate and long colonoscopes.
- External abdominal pressure was similarly required for both instrument lengths.
- Intermediate colonoscope length was a rare cause of failed cecal intubation (0.6%).
Conclusions:
- Intermediate-length colonoscopes are rarely a cause of colonoscopy failure.
- Neither intermediate nor long colonoscope lengths offer a significant advantage in routine colonoscopy procedures.
- Patient factors, such as female sex, were associated with longer completion times and increased need for external abdominal pressure.