TAVR vs Open-Heart Surgery: Who Gets Which and What the Trials Showed

TAVR and open-heart surgery are two ways of replacing a narrowed aortic valve: TAVR threads a new valve up through an artery without opening the chest, while surgical replacement opens the chest, stops the heart, and sews a new valve in by hand. When I was told I needed a new valve I assumed the operation was the only option, and I was quietly terrified of it. The fact that there was a choice at all, and that the choice was genuinely mine and the heart team’s to make together, was the first thing nobody had explained. Here is how the two compare.

The two procedures, side by side

TAVR is a catheter procedure and surgical aortic valve replacement, or SAVR, is open-heart surgery, and the difference in how they are done shapes everything else. In SAVR the surgeon opens the chest through the breastbone, places you on a heart-lung bypass machine that takes over your circulation, stops the heart, cuts out the diseased valve, and stitches a new one into place ¹.

TAVR does none of that. A new valve, collapsed inside a catheter, is threaded up an artery, usually from the groin, and expanded inside the old valve while the heart keeps beating. The old valve is left where it is, and contemporary TAVR carries a low 30-day mortality of around 1 to 2% in lower-risk patients ². A full account of the catheter procedure is in what TAVR is, and the surgical operation it is measured against is set out in heart valve replacement surgery. The goal is identical; only the route into the heart differs.

Who gets which

Guidelines broadly favour TAVR for older and higher-risk patients and surgery for younger ones, but the decision is made person by person by a heart team. There is no single age cut-off. The heart team weighs age, the anatomy of your valve and arteries on a CT scan, your overall surgical risk, and any other heart problems that might need fixing at the same time ³.

Several things tend to push towards surgery: being younger, an unusual valve shape that a catheter valve would not seat well in, or needing another procedure such as bypass grafts alongside the valve. Durability weighs here too, since surgical tissue valves last roughly 10 to 15 years against about 5 to 8 years shown so far for TAVR valves, which matters more the longer you expect to live ⁴. Things that push towards TAVR include older age, frailty, previous heart surgery, or other conditions that make an operation more dangerous ⁴. Working out which side you fall is the whole subject of whether you are a candidate for TAVR. At 74 and otherwise reasonably well, I sat firmly in the group for whom TAVR is now the usual offer.

The recovery and hospital stay

The clearest practical difference is recovery: TAVR usually means 1 to 3 days in hospital and weeks to get back to normal, while surgery usually means about 5 to 7 days in hospital and months. The reason is simple. Open surgery cuts through the breastbone, which then has to knit back together over six to eight weeks, restricting driving, lifting, and much else in the meantime ¹.

TAVR leaves the chest untouched, so there is no bone to heal. I was home after two nights, with only the small groin wound to mind. That gulf in recovery, weeks versus months, is a large part of why TAVR is so attractive to older patients, and why for many people it is worth serious thought even when surgery would also be reasonable.

The different risks

TAVR and surgery do not carry the same risks; each has its own pattern, so the comparison is not simply safer versus riskier. Contemporary TAVR has a low 30-day mortality of around 1 to 2% in lower-risk patients, and the stroke risk around the procedure is roughly 2 to 3% ².

The most notable difference in the risk profile is the pacemaker. TAVR more often disturbs the heart’s electrical wiring, so a new permanent pacemaker is needed in about 10 to 20% of cases, more than after surgery ⁵. Surgery, for its part, brings the risks of a major operation and the recovery of a cut breastbone. The full list for the catheter procedure is in TAVR risks and complications. Neither procedure is risk-free, and the honest comparison is between two different sets of risks, not a safe option and a dangerous one.

What the trials showed

The PARTNER and Evolut trials, published in the New England Journal of Medicine, are the reason we can compare the two at all, and they showed TAVR performing at least as well as surgery on early outcomes across the risk spectrum. The programmes worked their way down the risk ladder over more than a decade ².

They tested TAVR against surgery first in high-risk patients, then in intermediate-risk, and finally in low surgical-risk patients in the PARTNER 3 and Evolut Low Risk trials ^{2 5}. In each step, for suitable patients, TAVR held its own on the key early measures, and did so with the far shorter stay of 1 to 3 days against about 5 to 7 days for surgery ¹. What the trials cannot yet fully answer is how the catheter valves last over the very long term, which is why durability, covered in how long a TAVR valve lasts, still weighs on the side of surgery for younger people. For an older patient like me, the trial evidence and the shorter recovery pointed the same way, and the decision, reached with my heart team, was TAVR.

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General information, not medical advice. The choice between TAVR and surgery depends on your age, anatomy, and overall health, and it is a decision for your own heart team, who can examine you and read your scans, not one to settle from an article.