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Related Experiment Videos

Pulmonary arteriovenous fistulas.

D E Dines, J B Seward, P E Bernatz

    Mayo Clinic Proceedings
    |March 1, 1983
    PubMed
    Summary

    Pulmonary arteriovenous fistulas were treated in 101 patients, with miniballoon occlusion showing promise for complex cases. Diagnostic workup includes imaging, blood gas analysis, and angiography.

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    Area of Science:

    • Cardiology
    • Pulmonary Medicine
    • Interventional Radiology

    Background:

    • Pulmonary arteriovenous fistulas (PAVF) are abnormal connections between pulmonary arteries and veins.
    • While often associated with hereditary hemorrhagic telangiectasia (Rendu-Osler-Weber syndrome), many patients lack this condition.
    • Previous institutional experience documented 63 PAVF cases from 1952-1972.

    Purpose of the Study:

    • To report on an additional 38 patients with PAVF seen from 1973-1981.
    • To describe the use of miniballoon occlusion for acquired systemic artery-to-pulmonary artery fistulas.
    • To highlight the diagnostic workup for PAVF.

    Main Methods:

    • Review of 38 consecutive PAVF patients (1973-1981) and 5 patients with acquired fistulas.
    • Miniballoon occlusion technique described for acquired fistulas.
    • Sequential diagnostic workup including chest imaging, arterial blood gases, contrast echocardiography, angiography, and differential pulmonary venous oxygen content measurement.

    Main Results:

    • The 38 new patients represent an 8.5-year follow-up period.
    • 18 (47%) of the 38 patients had Rendu-Osler-Weber syndrome.
    • Miniballoon occlusion was used for acquired fistulas, potentially avoiding extensive surgery.

    Conclusions:

    • PAVF diagnosis relies on a prioritized sequence of investigations.
    • Miniballoon occlusion offers a less invasive therapeutic option for specific PAVF types.
    • The prevalence of Rendu-Osler-Weber syndrome in PAVF patients varies.

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