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Effective Treatments for Thoracic Aortic Aneurysms (ETTAA Study): A Prospective Cohort Study

NHS Foundation Trust logo

NHS Foundation Trust

Status

Unknown

Conditions

Thoracic Aortic Aneurysm

Treatments

Procedure: Open Surgery (OSR)
Procedure: Stent Grafting (ESR)

Study type

Observational

Funder types

Other

Identifiers

NCT02010892
11/147/03 (Other Grant/Funding Number)
P01633

Details and patient eligibility

About

This is a prospective observational cohort study that will collect data from the point of referral through to secondary care, aiming for 3 years median follow-up (range 1-5 years). The data collected will allow estimation of the success of any intervention (in terms of reducing rate of aneurysm growth, rupture or dissection) as well as estimation of the risks associated with the three procedures. Clinical outcomes in the three treatment groups will be described.

Aims

We aim to answer the following questions:

  1. Without procedural intervention for chronic thoracic aortic aneurysm (CTAA), what is the risk of aneurysm growth, dissection, rupture, permanent neurological injury or death? What is the effect on quality of life (QoL)?

  2. If a patient has endovascular stent grafting (ESG) or open surgical repair (OSR), what is the risk of growth, dissection, rupture, permanent neurological injury or death?

  3. How does QoL change from pre- to post intervention?

  4. Can aneurysm or patient related predictors of good/poor treatment outcomes be determined?

  5. What is the most cost-effective strategy in:

    1. Patients eligible for either ESG or OSR?
    2. Patients eligible for either ESG or best medical therapy (BMT)?
    3. Patients eligible for either watchful waiting (WW) or intervention (ESG/ OSR)?
  6. What further research is required? What would be the most important research to pursue?

Enrollment

2,200 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Thoracic Aortic Aneurysm > 4cm
  • Age ≥18 years
  • Able to give informed consent

Exclusion criteria

  • Intervention required below the level of the coeliac axis
  • Acute dissection or malperfusion syndromes (such as myocardial infarction,acute stroke or limb ischaemia)

Trial design

2,200 participants in 4 patient groups

Watchful Waiting
Description:
Patients with aneurysms considered to be at low risk of rupture will remain under surveillance with annual CT / MRI scans and multi-disciplinary team review (as per local practice). These patients' data will contribute to the natural history component of the study.
Best Medical Therapy
Description:
This refers to lifestyle modification (smoking cessation and dietary management) as well as medical management of hypercholesterolaemia and hypertension for patients who are considered unsuitable for, or who refuse, OSR / ESG.
Open Surgery (OSR)
Description:
Replacement of the aneurysmal aorta with prosthetic conduit via a sternotomy or thoracotomy with circulatory support.
Treatment:
Procedure: Open Surgery (OSR)
Stenting (ESR)
Description:
Endovascular repair of the aneurysm via transluminal introduction of a stent-graft under X-ray guidance. Hybrid procedures that comprise a combination of a conventional surgical component and a transluminal repair are to be included in this group.
Treatment:
Procedure: Stent Grafting (ESR)

Trial contacts and locations

1

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Central trial contact

Vikki Hughes, PhD

Data sourced from clinicaltrials.gov

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