Active not recruitingNAINTERVENTIONAL

Early Valve Replacement Guided by Biomarkers of LV Decompensation in Asymptomatic Patients With Severe AS

This study is investigating whether earlier treatment for severe narrowing of the aortic valve, using information from special heart scans, can lead to better health outcomes. Aortic stenosis is a common condition where the heart valve narrows, making the heart work harder. Current guidelines usually recommend surgery only when symptoms appear or the heart muscle shows significant weakness. However, waiting can sometimes mean the heart is already damaged. Researchers have found that MRI scans can detect early scarring in the heart muscle, which might mean a person is at higher risk of problems. This study will identify people with valve narrowing who have this scarring and then compare early surgery with standard care to see if it reduces complications and improves survival.

At a glance

Status

Active not recruiting

Phase

Sponsor

University of Edinburgh

Enrolment target

1,000

Start

21 Jul 2017

Estimated completion

30 Jun 2032

Aortic Valve Stenosis Hypertrophy, Left Ventricular

What is this study about?

Your heart has four valves that make sure blood flows in the right direction. The aortic valve is one of these, and it sits between your heart's main pumping chamber (the left ventricle) and your body's main artery (the aorta). Aortic stenosis means this valve has become stiff and narrow, making it harder for your heart to pump blood out to your body. Over time, your heart muscle has to work much harder, and it can thicken and eventually become damaged.

Currently, doctors usually wait to recommend an operation to replace the narrowed valve until you start having symptoms like chest pain, breathlessness, or dizziness, or if scans show your heart muscle is already struggling significantly. The problem is that sometimes, by the time these signs appear, the heart might have already suffered damage that is difficult to reverse, even after surgery.

This study is exploring a new approach. Researchers are using special heart scans called MRI to look for early signs of strain on the heart, specifically scarring in the heart muscle. They've found that people with this scarring might be at higher risk of future problems. This study aims to see if offering valve replacement surgery earlier, based on these MRI findings, can lead to better long-term results for patients with severe aortic stenosis who don't yet have symptoms.

Key takeaways

Aims to find out if earlier valve surgery is better for severe aortic stenosis.
Focuses on patients who don't yet have symptoms.
Uses special heart MRI scans to detect early heart changes.
Compares early surgery to current standard care (waiting).
Hopes to reduce complications and improve survival.
Participation involves health checks, possibly an MRI, and being assigned to a treatment group.

Who may be eligible?

To join this study, you would need to be over 18 years old and have been diagnosed with severe narrowing of your aortic valve. An important part of this study is that you shouldn't currently have symptoms from your aortic valve, or other clear reasons, that would already make your doctor recommend valve surgery according to standard guidelines.

There are also some reasons why you wouldn't be able to join. For example, if you've had previous heart valve surgery, or if you have other serious heart conditions like very high blood pressure, certain other valve problems, or if your heart muscle is already very weak. You also can't take part if you have a medical reason that prevents you from having an MRI scan, such as a pacemaker.

If you're pregnant or breastfeeding, or if your kidneys aren't working well, you also wouldn't be able to participate. Finally, if you're not well enough for surgery or wouldn't consider having a valve replacement, this study wouldn't be suitable for you.

Quick self-check

Are you over 18 years old?
Do you have severe aortic valve narrowing?
Do you currently have *no* symptoms (like breathlessness or chest pain) directly from your aortic valve?
Are you able to have an MRI scan (e.g., no pacemaker)?
Are your kidneys generally healthy?
Are you *not* pregnant or breastfeeding?

This is a guide only — the research team will confirm whether you can take part.

What does participation involve?

If you join this study, you would first have a careful check of your health to see if you're likely to have the specific type of heart scarring the researchers are interested in. If your risk is high, you would then have a special heart scan called an MRI.

Depending on what the MRI scan shows about heart scarring, you might then be randomly put into one of two groups: one group would continue with your usual medical care, with regular check-ups as part of the study. The other group would be referred for early aortic valve replacement surgery. You would be closely monitored throughout the study, regardless of which group you are in, to see how you are doing over time. The total length of your participation would depend on the study design and your allocated group.

Potential risks and benefits

Participating in research studies always has potential benefits and risks. A potential benefit of this study is that if you are in the early surgery group, your heart might recover better, leading to fewer health problems and a longer life compared to waiting. On the other hand, all surgeries carry risks, and undergoing surgery earlier means you'd face these risks sooner. If you are in the usual care group, you might avoid surgery for longer or indefinitely, but your heart could still suffer damage over time. You have the right to withdraw from the study at any time, for any reason, without affecting your regular medical care.

Locations (1)

NHS Lothian
Edinburgh, United Kingdom

Common questions

What is 'severe aortic stenosis'?

It means the main valve leaving your heart is very narrowed, making your heart work harder to pump blood.

Why is an MRI scan used in this study?

MRI scans can help doctors see early signs of scarring in the heart muscle, which might show who could benefit from earlier treatment.

What does 'randomised' mean?

It means you are put into a treatment group by chance, like flipping a coin, so the study can fairly compare the different approaches.

Will I have to have surgery if I join?

Not necessarily. If you have the specific scarring and are chosen for the surgery group, then yes. Otherwise, you might continue with standard care.

Who is running this study?

This study is being run by medical researchers who are investigating new ways to treat aortic valve disease more effectively.