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Rectal balloons: complications, causes, and recommendations.

J A Nelson, A U Daniels, W J Dodds

    Investigative Radiology
    |January 1, 1979
    PubMed
    Summary
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    Rectal injuries during barium enemas are linked to balloon catheter mechanical issues. Improving catheter design and using prophylactic measures can prevent these barium enema complications.

    Area of Science:

    • Gastroenterology
    • Medical Device Engineering
    • Radiology

    Background:

    • Rectal injuries have been reported following barium enema examinations.
    • These injuries appear to be associated with the inflation of rectal balloons used during the procedure.

    Purpose of the Study:

    • To investigate the mechanical properties of rectal balloon catheters.
    • To identify factors contributing to rectal injuries during barium enemas.
    • To recommend prophylactic measures to prevent such injuries.

    Main Methods:

    • Review of nine cases of rectal injury.
    • Clinical analysis of patient anatomy and injury mechanisms.
    • Manometric evaluation of in vivo rectal balloons.
    • Bench studies of commercially available rectal balloon catheters.

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    Main Results:

    • Mechanical properties of balloon catheter tips may transfer stress to the rectal wall.
    • Anatomic differences in patients are clinically significant.
    • Commercially available catheters exhibit undesirable properties like low compliance and asymmetrical inflation.
    • Catheter tip displacement and self-obstruction during deflation were observed.

    Conclusions:

    • Specific mechanical flaws in rectal balloon catheters contribute to rectal injuries during barium enemas.
    • Patient anatomy plays a role in injury risk.
    • Prophylactic procedures are recommended to mitigate these risks.