Could You Have AFib and Not Know It?
May 23, 2024
You could have atrial fibrillation (AFib) and not realize it. As many as 2 million people may be undiagnosed with AFib. It’s the most common of several types of irregular heartbeat, or arrhythmia, which happens when a heart beats too fast, too slow, or in another abnormal way.
AFib is a risk factor for more serious medical conditions that may include heart attack or heart failure, stroke and dementia.
AFib occurs when the heart’s chambers beat at different rates—when the two atria or top chambers aren’t beating in sync with the two ventricles on the bottom.
Types of AFib
Cardiologists usually refer to four types of AFib, based on duration:
- Paroxysmal: You go “in and out of AFib.” It may be a short burst, last for a few hours or a few days, but no longer than seven
- Persistent: AFib that lasts at least seven days straight
- Long-standing: AFib that lasts a year or more
- Chronic AFib: It is consistent, meaning all the time
How to Know if You Have AFib
Experts say you might feel palpitations—the sensation or knowledge that your heart is beating out of rhythm, fluttering or beating too fast. You can usually detect this if you take the pulse in your neck or wrist. You could also feel lightheaded or fatigued or experience shortness of breath or chest pain.
AFib may be noticed during a routine office visit. During an examination, doctors can hear the irregular heartbeat or see the irregular rhythm on an EKG—an electrocardiogram administered by wearing a few electrode patches on your body for a short time. Some patients also discover their AFib through wearable smart devices like the Apple Watch.
Some people have no idea they are living with AFib because they are asymptomatic or have no symptoms. Some people experience AFib all the time and either tolerate or have no symptoms.
Some patients may not realize they have AFib if they are on medications to control their heart rate, such as beta-blockers or calcium channel blockers, which keep heart rates slow and can mask symptoms.
Why to Get Tested for AFib
It’s crucial to diagnose this condition because even patients with no symptoms can have a stroke. In AFib, the top of the heart is fibrillating. When that happens, blood in the top chamber can pool and form clots that can travel to the brain and cause a stroke.
AFib is themost common arrhythmia as people get older. Other risk factors connected to this condition include:
- High blood pressure or hypertension
- Heart failure and heart valve diseases
- Coronary artery disease
- Excess body weight or obesity
- Diabetes
- Hyperthyroidism
- Chronic kidney disease
- Smoking
- Moderate to heavy alcohol use
- Viral infections
- Sleep apnea
Treatments for AFib
Lifestyle recommendations that can improve AFib include maintaining a healthy weight, being physically active, eating a heart-healthy diet, managing stress, quitting smoking, and minimizing alcohol use.
Common treatments include:
1. Medications
Medications may include beta-blockers and calcium channel blockers, which reduce heart rate and minimize symptoms while in AFib. Longer-term treatment may include a blood thinner to prevent a stroke and control heart rates while in AFib, known as rate control strategy, or restoring normal rhythm, called rhythm control strategy.
2. Cardioversion
There are two main types of cardioversion:
- Chemical cardioversion, which uses medication to restore normal heart rhythm.
- Electrical cardioversion, which uses low-energy electrical shocks to help return to a normal heart rhythm.
3. Ablation
Also called catheter, cardiac or radiofrequency ablation, the procedure utilizes radiofrequency energy—think microwaves and heat—to put a small scar in the area of the heart that causes the irregular heartbeats. This method is often very successful at restoring and maintaining normal rhythm.
Most people with AFib go on to live a normal, otherwise healthy life. If you are diagnosed with AFib, your doctor can decide which treatment option is right for you through joint decision-making.
Next Steps & Resources
- Make an appointment online with a cardiologist at Pascack Valley Medical Center, or call 800-822-8905.
- Make an appointment to get a heart screening.
- Make an appointment for a heart screening at Pascack Valley Medical Center.
- Learn more about heart care at Hackensack Meridian Health.
The material provided through Healthier You is intended to be used as general information only and should not replace the advice of your physician. Always consult your physician for individual care.
