New heart valve trial aims to improve Second-Time valve replacements
NCT ID NCT07524595
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This trial is for people whose surgically implanted aortic heart valve has stopped working properly. It compares two types of replacement valves placed through a tube in the leg (TAVI): a newer self-expanding valve (Hydra) versus standard balloon-expandable valves (Sapien or MyVal). The goal is to see which valve allows better blood flow through the heart. About 111 participants will be randomly assigned to receive one of the valve types.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Hydra THV Series (self-expanding valve) and Sapien/MyVal THV Series (balloon-expandable valves)
- What this could lead to
- If successful, this trial could show that the Hydra valve provides better blood flow than current balloon-expandable valves for patients needing a second valve replacement.
- What could go wrong
- This is a relatively small, early-stage trial (111 patients) comparing devices, not testing a new cure. Results may not apply to all patients, and there are standard risks of TAVI procedures like bleeding or valve issues.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 111 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Aug 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
"Inclusion Criteria": 1. Male or Female patient ≥18 years of age 2. Severe hemodynamic valve deterioration of a surgically implanted bioprosthetic aortic valve, including severe valve stenosis and/or severe valve regurgitation, as determined by the Heart Team assessment 3. Patients eligible for transfemoral TAVI with both study THV platforms per heart team consensus. 4. TAVI (with or without fracture of surgical valve) is suitable with commercially available sizes of both Hydra and Sapien/Myvall BEVs. 5. Patient has been informed of the nature of the study and agrees to its provisions and has provided written informed consent as approved by the Ethics Committee and is willing to comply with all protocol-required (follow-up) evaluations. "Exclusion criteria": 1. Patients unwilling to provide an informed consent, or whose legal representative object to their participation in the study 2. Patient is a woman who is pregnant or nursing (a pregnancy test must be performed within 7 days prior to the index procedure in woman of child-bearing potential according to local practice) 3. Patients with non-transfemoral TAVI access. 4. Surgical or transcatheter valve in mitral position (mitral rings are not an exclusion) 5. Patients who had received the Bentall procedure. 6. Patients with active bacterial endocarditis or ongoing sepsis ≤6 months prior to the index procedure 7. Echocardiographic evidence of intracardiac mass, thrombus or vegetation 8. Acute myocardial infarction ≤30 days before the intended TAVI procedure 9. Known hypersensitivity or contraindication to antithrombotic therapy (or inability to be anticoagulated during the procedure), nitinol, or sensitivity to contrast media which cannot be adequately pre-medicated 10. Patients with severe left ventricular dysfunction and ejection fraction \<30% or hemodynamic instability requiring inotropic agent or mechanical support. 11. Patients with significant renal insufficiency (serum creatinine \>3.0 mg/dL (265.5μmol/L)) and/or end stage renal disease requiring chronic dialysis 12. Patients who are at very high risk of coronary obstruction (e.g., VIVID classification IIB, IIIB, IIIC) and are judged by the heart team to require upfront leaflet laceration (e.g. Basilica or Unicorn procedure) or chimney or snorkel stenting as part of the TAVI procedure. 13. Any planned surgical or peripheral procedure to be performed in next 30-day after the index procedure 14. Life expectancy \<12 months due to non-cardiac co-morbid conditions including carcinomas, chronic liver disease, chronic renal disease or chronic end-stage pulmonary disease
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Galway
Galway, Ireland
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