AFib raises the chance of stroke because the top chambers of the heart twitch instead of squeezing, which can let a blood clot form. If that clot travels to the brain, it can cause a stroke. The good news: there are proven ways to lower that risk, from blood thinners to a procedure called left atrial appendage closure.
Why AFib can lead to a clot
In a normal heartbeat, the top chambers squeeze blood down into the bottom chambers with every beat. In AFib, they twitch very fast and do not empty well. Blood moves more slowly in some spots, and slow blood can clot. FCCI lists stroke due to a blood clot as one of the serious consequences AFib can cause.
A common place for these clots is a small pouch on the top left chamber called the left atrial appendage. That is why some stroke-prevention treatments focus on that pouch.
Know the stroke warning signs
A stroke is an emergency. Learn the signs so you can act fast for yourself or someone else:
- Face drooping on one side
- Arm or leg weakness, especially on one side
- Speech that is slurred or hard to understand
- Sudden confusion, trouble seeing, or a severe headache
If you see any of these, call 911 right away. Note the time the symptoms started. Do not drive the person to the hospital yourself.
How doctors lower your stroke risk
FCCI's AFib care includes several ways to reduce the chance of a clot:
- Blood thinners: FCCI notes you might be placed on blood thinners to reduce the chance of developing a blood clot.
- Left atrial appendage closure: for some patients, a device such as Watchman or Amulet seals off the pouch where clots often form. FCCI's Director of Electrophysiology, Dr. Firas El Sabbagh, is highly skilled in this procedure.
- Managing the whole picture: controlling blood pressure, checking for sleep apnea and reaching a healthy weight are part of good AFib care.
Your doctor will weigh your personal risk factors to decide what fits you. This is a conversation, not a one-size-fits-all rule.
Feeling fine is not the same as low risk
Some people with AFib feel no symptoms at all. That can make it tempting to skip follow-up visits or medicines. But stroke risk does not depend on how you feel. Keep your appointments and take medicines as prescribed. If something about your treatment bothers you, such as side effects or cost, tell your doctor. There may be other options.
Questions to ask your doctor
- What is my stroke risk with AFib?
- Do I need a blood thinner, and which one?
- Am I a candidate for Watchman or another LAA closure device?
- What else can I do to lower my risk?
What you can do this week
- Post the stroke warning signs on your fridge and share them with family.
- Put your medicine list on your phone and in your wallet.
- Check your blood pressure at home and write it down.
- Book a follow-up if it has been a while since your last heart visit.
Small steps like these make it easier for you and the people around you to act quickly if something changes.
Getting care at FCCI
A stroke risk review can happen close to home. FCCI has offices from the Southside (7011 AC Skinner Parkway) to Orange Park, Palatka and Waycross, and its doctors cover four HCA hospitals around the clock. Most major insurance, including Medicare and Tricare, is accepted.
Your personal stroke risk depends on your own health history, which only your doctor can weigh.
Curious about your own stroke risk? Ask for a heart rhythm visit at 904.493.3333, weekdays 8AM to 5PM, or use the short request form (name and phone only).
