Why Is a Domino Heart Transplant Performed Instead of a Standard One?

A domino heart transplant involves two patients. One patient, usually someone with severe lung disease, receives a donor heart and lungs together, and their own heart, if it is healthy enough, is then transplanted into a second patient who needs a heart transplant. It’s done to make the most of scarce donor organs, and sometimes because a standard transplant wouldn’t suit one of the two patients well. Here’s why surgeons choose it.

According to Dr. Vishal Khullar, a Heart Transplant Surgeon in Mumbai, “In a domino transplant, one patient’s healthy heart becomes another patient’s second chance. Careful matching is what makes it work.”

Two patients, one chain of operations, and a lot of timing.

• The first patient: Often someone with cystic fibrosis or pulmonary hypertension, where the lungs have failed and a heart lung transplant is the answer. In cystic fibrosis the damage sits mostly in the lungs, so the heart can stay healthy.
• The donor organs: The new heart and lungs come from one deceased donor and go in together. That swap is what frees up the first patient’s own heart.
• The second patient: Someone with end stage heart failure who is waiting for a heart. Their new heart comes straight from the first patient, not from the donor.
• The timing: Several surgical teams work at once, so the two operations stay closely linked. The name fits: one operation leads straight into the next.

The standard operation is explained on our heart transplant page.

The main difference is where the heart comes from.

Why not just use a standard transplant? The first patient’s lungs need replacing too, so the heart goes in with them. Their own healthy heart would otherwise be removed and not used.

Who can benefit: Some patients have high pressure in the blood vessels of the lungs, which can rule them out of a standard list. A domino heart may suit them.

The early risk: In a review of 131 domino transplants at one center, 30 day mortality was 13%, slightly above standard transplants, though later attrition stayed low.

What stays the same: Matching on blood group and size still applies, and so do lifelong medicines and regular checks to watch for rejection.

To see where this fits among other options, read about heart transplant types.

Figures like these describe groups, not individuals. Age, health and regular follow up can shift them a lot.

Domino results: Graft survival ran at 75% after one year, 70% after five and 58% after ten. Care has changed since those patients were treated, so these are a guide, not a promise.

Can you live 30 years? Rarely, but yes. One report from Berlin and Hannover described 10 patients alive more than 31 years after their heart transplant.

Does it shorten lifespan? Compared with a healthy heart, yes. Registry median survival is 12 years, and about 21% of patients are alive at 20 years.

What limits survival: Narrowing of the heart’s own arteries, called cardiac allograft vasculopathy, is the main one. Kidney problems and cancer also turn up in long survivors, and regular follow up helps catch them.

Our guide to heart transplant survival goes into life expectancy in more detail. Planning with the transplant team matters more than any single number.

A domino heart transplant passes a healthy heart from a heart lung recipient to a second patient. It stretches scarce donor organs and can help patients who are hard to match. Early risk is slightly higher, though results in selected patients are reasonable, and long term survival after any heart transplant varies. Plans should be discussed with a transplant surgeon.

1. PubMed (NIH): Long-term results of cardiac transplantation from live donors: the domino heart transplant
2. PMC (NIH): Resumé of the challenges and burden of living with transplanted hearts for >31 years

Disclaimer: This blog is for educational and informational purposes only and should not be considered professional advice.