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Related Experiment Videos

Venous contrast extravasation during digital subtraction angiography.

G L Arbona, A D Verrill, W C Conrad

    Cardiovascular and Interventional Radiology
    |January 1, 1985
    PubMed
    Summary

    Contrast extravasation during intravenous digital subtraction angiography is a serious complication. Understanding catheter type, placement in the superior vena cava, and respiratory phase can help reduce risks.

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    Area of Science:

    • Cardiovascular Imaging
    • Interventional Radiology

    Background:

    • Intravenous digital subtraction angiography (DSA) is a key diagnostic tool.
    • Contrast extravasation is a rare but serious complication during DSA procedures.

    Observation:

    • Six episodes of contrast extravasation occurred in 5 patients within 9 months during intravenous DSA.
    • Extravasations involved the mediastinum, pericardium, and right atrial wall.
    • All events utilized 5.0 F catheters of various configurations (Katzen, pigtail, straight).

    Findings:

    • Catheter-related factors, including 5.0 F size, recoil, and jet stream effect from high-pressure injections, contribute to extravasation.
    • Improper catheter positioning in the superior vena cava is a significant risk factor.
    • The respiratory phase during injection critically influences the likelihood of extravasation.

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    Implications:

    • Awareness of these contributing factors can guide procedural adjustments.
    • Implementing strategies to mitigate catheter-related risks, optimize positioning, and consider respiratory phase may decrease extravasation events.
    • This understanding is crucial for enhancing patient safety during DSA procedures.