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Related Experiment Videos

Thrombosis after phlebography?

R May

    Diagnostic Imaging
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    This study found that using Amipaque contrast medium during phlebography significantly reduces the risk of deep vein thrombosis compared to conventional contrast agents. Heparin precautions further enhance safety, minimizing complications in over 20,000 procedures.

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    Area of Science:

    • Vascular Imaging and Interventional Radiology
    • Medical Diagnostics and Procedures

    Background:

    • Deep vein thrombosis (DVT) is a potential complication of phlebography, a diagnostic imaging technique.
    • Conventional contrast media have been associated with a risk of thrombus formation, potentially damaging venous valves.
    • Previous reports, such as Albrechtsson's, have highlighted concerns regarding thrombosis following phlebography.

    Purpose of the Study:

    • To evaluate the safety and efficacy of Amipaque as a contrast medium in phlebography.
    • To compare the incidence of clinically manifest thrombosis between Amipaque and conventional contrast media.
    • To assess the role of heparin precautions in mitigating thrombotic events during phlebography.

    Main Methods:

    • Phlebography procedures were performed on over 20,000 patients.

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  • A specific protocol involving 40 cm³ of 45% contrast medium and heparin precautions was consistently applied.
  • A comparative test involved injecting 20 cm³ of 45% conventional contrast medium directly into varicose veins, versus the same amount of Amipaque.

    • Main Results:

    • No clinically manifest thrombosis was observed in over 20,000 phlebographies using the specified protocol.
    • Only minor, clinically insignificant thrombi were detected in a very small number of cases.
    • Direct injection of conventional contrast medium into varicose veins consistently resulted in venous thrombosis (approx. 20 cm), whereas Amipaque showed no such reaction.

    Conclusions:

    • Amipaque is a safe and effective contrast medium for phlebography, significantly reducing the risk of thrombosis.
    • The use of Amipaque, in conjunction with heparin precautions, appears to prevent deep venous valve damage.
    • Conventional contrast media carry a higher risk of inducing venous thrombosis, especially when injected directly into compromised veins.