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Predicting success in limb salvage.

J M Van De Water, K K Nelson, R B Indech

    The American Surgeon
    |July 1, 1983
    PubMed
    Summary
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    Assessing arterial outflow is crucial for successful limb salvage surgery. A new outflow index (phi) effectively predicts procedure success by measuring femoral artery pressure changes after papaverine injection.

    Area of Science:

    • Vascular Surgery
    • Vascular Physiology
    • Surgical Outcomes Research

    Background:

    • Successful limb salvage in severe arterial insufficiency requires both technically sound surgery and adequate arterial outflow.
    • The ability of the outflow system to accept increased blood flow is a critical determinant of revascularization success.

    Purpose of the Study:

    • To introduce and validate a novel "outflow index" (phi) for predicting the success of revascularization procedures.
    • To assess the correlation between the outflow index and the clinical success of aortoiliac procedures with profundoplasty.

    Main Methods:

    • Developed an "outflow index" (phi) defined as the percentage drop in femoral artery pressure after intra-arterial papaverine injection.
    • Conducted a prospective study of 44 limbs undergoing aortoiliac procedures with profundoplasty for multilevel arterial disease.

    Related Experiment Videos

  • Compared the mean phi values between operations deemed completely successful and unsuccessful based on strict postoperative criteria.

    • Main Results:

    • Operations classified as completely successful (n=27) showed a significantly higher mean phi value (37 +/- 8%) compared to unsuccessful operations (n=17; 16 +/- 9%; P < 0.001).
    • The outflow index demonstrated strong predictive value for the success of limb salvage procedures.

    Conclusions:

    • The developed outflow index (phi) is an effective tool for assessing the adequacy of the arterial outflow system.
    • Emphasizes the critical importance of a receptive outflow system for achieving successful limb salvage outcomes in vascular surgery.