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Plethysmography during aorto-iliac surgery.

G B Drummond, D R Harper, D B Scott

    The Journal of Cardiovascular Surgery
    |January 1, 1979
    PubMed
    Summary
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    Leg blood flow monitoring during abdominal aortic surgery revealed persistent blood flow in patients with occlusive aortoiliac lesions. This measurement proved valuable for assessing hemodynamic responses and patient outcomes.

    Area of Science:

    • Vascular Surgery
    • Hemodynamics
    • Patient Monitoring

    Background:

    • Abdominal aortic surgery requires careful hemodynamic monitoring.
    • Assessing lower limb perfusion during aortic clamping is crucial.
    • Occlusive aortoiliac lesions can impact blood flow dynamics.

    Purpose of the Study:

    • To evaluate the utility of calf blood flow measurement in monitoring patients during abdominal aortic surgery.
    • To investigate blood flow patterns in the legs of patients with occlusive aortoiliac lesions during aortic clamping and release.

    Main Methods:

    • Utilized venous occlusion plethysmography to measure calf blood flow.
    • Monitored cardiac output, arterial pressure, and central venous pressure.
    • Observed hemodynamic responses before, during, and after aortic clamping and release.

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    Main Results:

    • Measurable leg blood flow persisted even after aortic clamping in patients with occlusive aortoiliac lesions.
    • The hyperemic response upon clamp release was diminished in these patients.
    • Post-clamp release hypotension correlated with the reduced hyperemic response.

    Conclusions:

    • Calf blood flow measurement is a valuable monitoring tool in abdominal aortic surgery.
    • Persistent leg blood flow indicates collateral circulation in aortoiliac disease.
    • Reduced hyperemia post-reperfusion may predict hypotension, guiding clinical management.