Health

What is ex-vivo lung perfusion, and how it's saving more donor organs

Guardian Health1 h ago
Medical equipment inside a hospital operating theatre
Medical equipment inside a hospital operating theatrePhoto: Stéf -b. / Pexels

Lung transplantation is considered one of the most challenging forms of organ transplant, largely because lungs can deteriorate very quickly once removed from a donor's body. In the traditional method, an organ is preserved in a cold solution and must reach the recipient as fast as possible. But damage that occurs to lung tissue during that window means many donated organs end up deemed unsuitable for transplant.

A technology developed in recent years is beginning to change that picture. Known as ex-vivo lung perfusion (EVLP), the system keeps a lung effectively "alive" outside the body by circulating a warm, oxygenated fluid through it. This allows doctors to observe the organ for hours before transplant, test its function, and in some cases even treat it.

NICE, the independent body that assesses health technologies in England, has backed wider use of the system across England and Wales. The agency says the technology could help rescue up to four in five donated lungs that currently go to waste because they are deemed unsuitable for transplant.

This is a particularly significant development for England, which has one of the lowest lung transplant rates in the world. According to the latest figures from NHS Blood and Transplant, 170 patients — including six children — are currently waiting for a new lung. Many of these patients live with chronic respiratory failure that severely affects daily quality of life while they wait for a suitable organ.

Experts say EVLP technology doesn't just make more organs usable — it can also improve outcomes after transplant. Testing an organ outside the body gives doctors a much clearer picture of a lung's actual function, reducing the risk that a compromised organ is mistakenly transplanted.

Another advantage of the system is that it eases time pressure. Under the traditional method, transplant teams had to act within a narrow window before an organ began to deteriorate. EVLP significantly extends that window, easing logistical planning and reducing reliance on rushed, middle-of-the-night operations.

The technology also allows some borderline lungs to be treated and made suitable for transplant. A lung showing mild signs of infection, for example, can have antibiotics administered directly while outside the body. This makes it possible to rescue organs that would previously have been considered unusable.

On cost, while EVLP systems are expensive to install and operate, health economists argue the expense can pay off in the long run. Making more organs usable shortens waiting lists and can reduce patients' need for prolonged intensive care, potentially generating savings for the health system overall.

Experts note the technology is not limited to lungs — similar perfusion systems are being developed for other organs, including kidneys and livers. This is seen as part of a broader transformation in the field of organ transplantation.

NICE's approval paves the way for the technology to become a more standard practice at transplant centres across England. Health officials hope the move will help reduce the number of patients on waiting lists in the years ahead.

This article is an AI-curated summary based on Guardian Health. The illustration is a stock photo by Stéf -b. from Pexels.

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