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Sequential radionuclide imaging during paracorporeal left ventricular support

S E Sweet, H A Sussman, T J Ryan

    Chest
    |September 1, 1980
    PubMed
    Summary
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    A paracorporeal left ventricular assist device (LVAD) helped refractory cardiogenic shock patients. Radionuclide ejection fractions during LVAD interruption predicted recovery and survival.

    Area of Science:

    • Cardiovascular Surgery
    • Medical Devices
    • Critical Care Medicine

    Background:

    • Refractory cardiogenic shock post-cardiac surgery presents a critical therapeutic challenge.
    • Paracorporeal assist devices offer a potential solution for hemodynamic support.

    Observation:

    • A paracorporeal left ventricular to ascending aorta assist device (LVAD) was used in four patients with severe cardiogenic shock.
    • Hemodynamic stabilization was achieved in all treated patients.

    Findings:

    • Two patients were discharged and remain well one year post-intervention.
    • A novel technique for radionuclide ejection fraction (EF) measurement during temporary LVAD interruption was developed.
    • These EFs showed predictive value for unassisted ventricular function and potential patient survival.

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    Implications:

    • This study highlights the potential of paracorporeal LVADs in managing complex post-surgical cardiogenic shock.
    • Radionuclide EF assessment during LVAD weaning may aid in clinical decision-making for device explantation.
    • Further research is warranted to validate these findings in larger cohorts.