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Related Experiment Videos

Does flexible small-diameter colonoscope reduce insertion pain during colonoscopy?

Ying Han, Yoshiharu Uno, Akihiro Munakata

    World Journal of Gastroenterology
    |January 31, 2002
    PubMed
    Summary

    A new extra-flexible colonoscope (CF-SV) significantly reduces abdominal pain during unsedated colonoscopies, especially for patients with prior surgery or abdominal disease. This innovation may make routine sedation unnecessary for improved patient comfort and procedure success.

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    Area of Science:

    • Gastroenterology
    • Medical Devices
    • Endoscopy

    Background:

    • Colonoscopy can cause significant abdominal pain during insertion without sedation.
    • Standard colonoscopes may be difficult to advance in patients with unfavorable factors.
    • Sedative agents are commonly used to mitigate discomfort during colonoscopy.

    Purpose of the Study:

    • To evaluate the clinical usefulness of a new extra-flexible, small-diameter colonoscope (CF-SV).
    • To compare the efficacy of CF-SV versus a standard colonoscope (CF-230I) in unsedated patients.
    • To investigate factors influencing abdominal pain during colonoscopy.

    Main Methods:

    • A comparative study involving 100 patients undergoing unsedated colonoscopy.
    • Initial insertion with a standard CF-230I colonoscope, followed by CF-SV if pain occurred.

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  • Assessment of pain, scope advancement, and colonic insertion pressures (in 36 patients).
  • Analysis of unfavorable factors (UF) such as previous abdominal surgery or disease.

    • Main Results:

    • 66% of patients experienced abdominal pain with the standard CF-230I scope.
    • CF-SV successfully reached the cecum or proximal areas in 94.9% of patients who experienced pain with CF-230I.
    • Unsedated patients with UF were more prone to pain with the standard scope.

    Conclusions:

    • The extra-flexible CF-SV colonoscope is highly effective in reducing pain and improving insertion success in unsedated patients.
    • CF-SV is particularly beneficial for elderly patients, those with UF, or those prone to abdominal pain.
    • The use of sedative agents may be reduced or eliminated with the CF-SV colonoscope.