Heart valve surgery before symptoms? new study tests if early action saves lives

NCT ID NCT03094143

Ongoing Disease control Sponsor: University of Edinburgh Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study looks at people with severe aortic stenosis (a narrowed heart valve) who don't yet have symptoms. Doctors usually wait until symptoms appear before replacing the valve, but by then the heart may already be damaged. The researchers use MRI scans to find hidden scarring in the heart muscle. If scarring is found, patients are randomly assigned to either standard care or early valve replacement (surgery or TAVI). The goal is to see if early surgery reduces deaths and hospital stays.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Aortic valve replacement (surgery or TAVI)
What this could lead to: If successful, this could show that replacing the valve earlier, before symptoms appear, saves lives and prevents heart damage.
What could go wrong: This is a large but still early-stage study. The MRI scarring method may not reliably predict who benefits, and surgery itself carries risks like infection or stroke.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

aortic valve stenosis Hypertrophy, Left Ventricular

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

AORTIC VALVE STENOSIS HYPERTROPHY, LEFT VENTRICULAR

Contacts and locations

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Locations

NHS Lothian

Edinburgh, United Kingdom

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