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Related Experiment Videos

Difficult or incomplete flexible sigmoidoscopy: implications for a screening programme

B T Stewart1, J O Keck, A V Duncan

  • 1Department of Colorectal Surgery, St Vincents Hospital, Melbourne, Victoria, Australia.

The Australian and New Zealand Journal of Surgery
|February 5, 1999
PubMed
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Flexible sigmoidoscopy is a potential colorectal cancer screening tool, but incomplete examinations, especially in women, are common. Factors like female sex and poor preparation reduce insertion depth, impacting screening efficacy.

Area of Science:

  • Gastroenterology
  • Oncology
  • Preventive Medicine

Background:

  • Flexible sigmoidoscopy is being evaluated as a colorectal cancer screening method.
  • Current efficacy estimates often assume complete examinations to 60 cm.
  • This study investigates insertion depth and reasons for incomplete procedures.

Purpose of the Study:

  • To determine the maximum insertion depth of flexible sigmoidoscopy in asymptomatic volunteers.
  • To identify factors associated with incomplete examinations.
  • To assess the implications of incomplete procedures on screening efficacy.

Main Methods:

  • Prospective study design involving asymptomatic volunteers.
  • Measurement of maximum flexible sigmoidoscopy insertion depth.

Related Experiment Videos

  • Data collection on patient characteristics, discomfort, and procedural difficulty.

    • Main Results:

    • Independent risk factors for reduced insertion depth include female sex, prior abdominal surgery in females, high pain expectation in females, and poor bowel preparation.
    • The procedure was deemed difficult in 33% of cases.
    • Female sex was a significant predictor of reduced insertion depth.

    Conclusions:

    • A significant rate of incomplete flexible sigmoidoscopy examinations occurs, particularly in women.
    • Screening efficacy estimates must account for the high incidence of incomplete procedures.
    • Factors influencing insertion depth, such as patient characteristics and procedural difficulty, need consideration.