• Purpose

    ETTAA is an observational clinical trial set up to try to find the most effective treatment for a potentially fatal chest condition. Currently there are two main forms of treatment for chronic thoracic aortic aneurysm (CTAA) - open surgery and an endovascular stent graft placement - however it has not been proven which is better for the patient and most cost effective for the NHS. The ETTAA study aims to answer both of these questions by observing patients in specialist centres across the country over a period of time to see how well they do.


    Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided.

    Recruitment to this study is now closed.

    Participating Sites

    There are 30 hospitals who have recruited to the ETTAA Study. Please click on Participating Centres tab to see where the Study is running.

    If you would like more information on the trial, please click here.

    View Participating centres

    Frequently asked

    What is an aneurysm?
    What does stenting involve?
    What does surgery involve?
    What other treatment is available?

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