Stroke outcomes with plain aspirin matched stronger drugs after an AFib procedure

If you or someone you love has atrial fibrillation (AFib) and has had a heart procedure called left atrial appendage closure, here is welcome news about stroke and the medicines that follow. In a large trial, plain aspirin worked as well as stronger drug combinations. It also caused less bleeding.

After this procedure, patients take medicine for a while. The drugs give the body time to cover the new device with its own lining. Until now, doctors did not know the best medicine plan for that stretch. This trial gives a clear answer.

How the study worked

Researchers randomly assigned 1,857 adults with nonvalvular AFib to one of three medicine plans after a successful procedure. The patients were treated at 87 sites across the US, and the average age was 76. They were followed for 6 months. The trial was published in JAMA on November 2, 2026. Patients and doctors knew which plan each person was on, as is common in trials like this, and the results were still clear.

The three plans were:

• Two antiplatelet drugs (called DAPT) for 6 months, then aspirin.
• A reduced-dose blood-thinner pill (called a NOAC) for 3 months, then aspirin.
• Aspirin alone for 12 months.

What they found

The researchers tracked a combined list of bad events over 6 months: death, stroke, a clot that travels to another part of the body, or major bleeding.

This happened to 6.9% of people on two antiplatelet drugs. It happened to 5.1% of people on the reduced-dose blood thinner. And it happened to 3.3% of people on aspirin alone, roughly half the rate of the two-drug group.

Both simpler plans passed the test the researchers set. Neither did worse than the two-drug plan.

Bleeding followed the same pattern, and aspirin alone had the least:

The researchers also checked for small clots forming on the device itself. These turned up in 3.4% of the two-drug group, 0.9% of the blood-thinner group and 2.7% of the aspirin group. Bleeding and device clots were secondary checks, so they carry less weight than the main result. Still, the picture is steady: a simpler plan did not cost people protection.

What does “at least as good” mean here?

Scientists use the word “noninferior” when a new plan is tested against the standard one. It means the new plan is not meaningfully worse. In this trial, aspirin alone and the reduced-dose blood thinner both met that bar. Aspirin alone also had the lowest rate of bad events.

This matters because medicine plans get harder to follow as they get more complicated. A single, familiar pill is easier to remember and easier to keep taking.

What you can do today

If you have had this procedure, or your doctor has brought it up, take two minutes to write down your questions. Ask which medicine plan you are on, how long it lasts, and what happens when it changes to aspirin. Keep the list with your pill organizer or by the phone, so you have it ready at your next visit or when you call the office. Do not change or stop any medicine on your own.