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Related Experiment Videos

Inflatable splints: do they cause tissue ischaemia?

K S Christensen, S Trautner, M Støckel

    Injury
    |May 1, 1986
    PubMed
    Summary
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    Pneumatic splint pressure significantly reduces cutaneous oxygen tension (TcPO2), reaching zero at 28 mmHg. Current assessment methods are unreliable, necessitating a maximum recommended splint pressure of 15 mmHg to prevent ischemic complications.

    Area of Science:

    • Emergency medicine
    • Biomedical engineering
    • Trauma care

    Background:

    • Pneumatic splints are commonly used for suspected fractures.
    • High internal splint pressure can compromise tissue perfusion.
    • Cutaneous oxygen tension (TcPO2) is a measure of tissue oxygenation.

    Purpose of the Study:

    • To investigate the relationship between pneumatic splint pressure and TcPO2.
    • To evaluate the reliability of current methods for assessing splint pressure.
    • To determine safe pressure limits for pneumatic splints.

    Main Methods:

    • 12 subjects were enrolled.
    • Transcutaneous oxygen tension (TcPO2) was measured at increasing pneumatic splint pressures.
    • Three common methods for assessing splint inflation pressure were tested for reliability.

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    Main Results:

    • TcPO2 decreased linearly with increasing splint pressure.
    • TcPO2 reached zero at a mean splint pressure of 28 mmHg.
    • Current methods for assessing splint pressure were found to be unreliable.

    Conclusions:

    • High pneumatic splint pressures pose a risk of ischemic complications.
    • A maximum recommended splint pressure of 15 mmHg is proposed.
    • Pneumatic splints should incorporate a safety blow-off valve set at 15 mmHg.