Clinical trial Recruiting at 1 site Interventional Ages 18 to 80

Comparing two surgical methods for treating acute aortic dissection

Official title: Randomized Trial on Acutely Dissected Aorta Repair With Hemiarch Replacement With or Without Stent Implantation (RADAR Trial)

Run by Chinese University of Hong Kong · NCT06044259 · Data updated 2026-11-12

This study is testing two different surgical methods for treating a serious type of aortic dissection to see which one helps patients recover better and have fewer complications.

Quick facts

Study typeInterventional
Ages18 Years to 80 Years
SexAll
Enrollment72 (estimated)
SponsorChinese University of Hong Kong
Academic / other
Locations1 site (Hong Kong, Hong Kong)
StatusRecruiting
StartedOctober 1, 2023
Main results expectedSeptember 30, 2027
Study endsSeptember 30, 2028
Registry record updatedSeptember 30, 2026
Trial IDNCT06044259 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 to 80 with acute DeBakey Type I aortic dissection requiring surgical intervention.

Probably not a fit

Patients with significant aortic arch dilation, connective tissue diseases, or other severe comorbidities may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to compare the outcomes of two surgical approaches for patients with acute DeBakey Type I aortic dissection: conventional hemiarch replacement and hemiarch replacement combined with the Ascyrus Medical Dissection Stent (AMDS). The primary objectives include assessing the occurrence of new intimal defects, rates of mortality, and major adverse events over a follow-up period. Additionally, the study will evaluate radiological outcomes related to aortic health in both treatment groups. The research is conducted at the Prince of Wales Hospital in Hong Kong.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical outcomes and reduced complications for patients with acute aortic dissection.

How similar studies have gone: While there is growing evidence supporting the use of hybrid prostheses in similar cases, this specific comparison of techniques is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patient´s age is between 18 and 80 years.
2. Patient is willing and able to give informed consent.
3. Patient has acute DeBakey Type I and requires repair or replacement of damaged or diseased vessels of the ascending aorta.
4. Patient not in coma/irreversible end organ failure/cardiac massage for resuscitation, at the time of consent.

Exclusion Criteria:

1. Patient has aortic arch diameter of more than 4.5 cm
2. Patient has known connective tissue disease or genetically linked aortopathy
3. Patient has entry tear over aortic arch
4. Patient with DeBakey Type II aortic dissection
5. Patient has co-morbidity (i.e. active malignancy (progressive, stable or partial remission)) causing expected survival to be less than 2 years.
6. Patient has any other medical, social, or psychological problems, that in the opinion of the investigator, preclude the patient from participating in this study.

Where it's running

  • Prince of Wales Hospital
    Hong Kong, Hong Kong, China
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.