Do you sometimes feel like your heart is beating like a drum, or is it just beating like crazy all of a sudden? Or do you get a strange feeling like a butterfly flying in your chest, or a fish struggling? These may not just be things that come to mind. It may also be a symptom of a heart condition called 'Atrial Fibrillation' (AFib) . So, today we will talk about this AFib in a simple way that you can understand.
What is Atrial Fibrillation (AFib)? Simply put...
Simply put, Atrial Fibrillation (AFib) is an irregular heartbeat that occurs in the two upper chambers of your heart, called the atria . Our hearts have an electrical system that sends signals to the heart to beat in a regular, orderly manner. But in the heart of someone with AFib, this electrical system doesn't work properly. Instead of sending signals in an orderly manner, it sends out many different signals at the same time.
Think of your heart as an orchestra. Normally, there is one conductor who gives the signals and makes the beats play in an orderly manner. But in AFib, instead of one conductor, there are several people giving the signals in different directions. Then the members of the orchestra don't understand whose signal they are playing. The music is completely confused, isn't it? That's how AFib causes the upper chambers of the heart, the atria, to start beating very fast and in a chaotic manner.
Because the atria don't contract properly, they can't pump blood properly to the chambers at the bottom of the heart, the ventricles . The ventricles respond to the signals from the atria, and they begin to contract irregularly. The heartbeat you feel is caused by the contraction of these ventricles. So, in AFib, this beat becomes fast and irregular.
How do you know if you have AFib? What are the symptoms?
Not everyone with AFib has symptoms. However, there are some common symptoms. If you are experiencing any of these symptoms, it is a good idea to see a doctor.
- It feels like a butterfly fluttering in your chest, like a fish struggling . Or it feels like your heart is beating fast and pounding in your chest. In medicine, we also call this ``heart palpitations'' .
- Feeling very tired is ``extreme fatigue`` . Not just tired, but so tired that you can't do anything.
- Dizziness or lightheadedness .
- Sometimes you may faint (syncope).
- Difficulty breathing (dyspnea) . You may feel like you are having trouble breathing even with a little exertion.
- Chest pain or tightness (angina).
If you have one or more of these symptoms, don't ignore them.
Is AFib a serious condition?
Yes, AFib is a serious condition. Whether you have symptoms or not, having AFib means that your heart rhythm is irregular. When your heart is not beating properly, there is a greater chance that blood clots will form inside your heart. If these blood clots break away from your heart and travel to a vital organ like your brain, they can cause a serious condition called a stroke . Also, if you have AFib for a long time, your heart can weaken and become weak, leading to a condition called heart failure .
Therefore, if you have symptoms of AFib, it is very important to seek medical advice immediately .
In this situation, call 1990 immediately or go to the nearest hospital:
- If you have severe chest pain .
- If you have severe difficulty breathing .
- If you are losing your mind or feel like losing your mind .
Why does AFib occur? What are the causes?
The main cause of AFib is changes in the heart's tissue and electrical system. There are several factors that can affect these changes:
- Other cardiovascular diseases: For example, conditions such as coronary artery disease, valve disease, and heart failure can contribute to AFib.
- Other health conditions: High blood pressure, overweight and obesity, hyperthyroidism, chronic kidney disease, and obstructive sleep apnea.
- Genetic factors: Recent research has found that certain genetic variations are linked to the development of AFib. These genetic influences may sometimes be a cause of AFib developing at a young age.
- Heart surgery: AFib can also occur after heart surgery for other reasons. AFib can also occur during recovery from non-heart surgery.
What other factors increase the risk of developing AFib?
In addition to the conditions mentioned above, several other factors increase the risk of developing AFib:
- Increasing age: The risk of developing AFib increases with age, especially after age 65 .
- Excessive alcohol use: Drinking more than the recommended amount of alcohol, especially binge drinking, increases the risk of AFib.
- Serious illnesses: The risk of developing AFib increases when you have illnesses that are severe enough to require hospitalization (e.g., sepsis, severe COVID-19 infection).
- Lack of physical exercise: Not engaging in enough daily physical activity is another cause of AFib.
- Extreme exercise training: While exercise is good for the heart, too much of anything is not good. People who exercise for more than three hours a day, over many years, are also at increased risk of developing AFib.
How do doctors diagnose AFib?
The most important test to accurately determine whether you have AFib is an ECG or EKG (Electrocardiogram) .
- This is done by recording the electrical activity of your heart on a graph. By looking at that graph, your doctor can determine for sure whether you have AFib or other heart rhythm disorders (arrhythmias).
In addition, the doctor will do these things:
- They will perform a physical examination and ask about your medical history.
- Blood tests may be ordered. These can help determine if there are other medical conditions or if there is a condition that could affect the AFib treatment plan.
- An echocardiogram (Echocardiogram - echo) test is ordered. This can be used to closely examine the structure and function of the heart.
- You may be given a small monitor (Holter monitor or cardiac event monitor) that you can wear for a few days or a week. This can continuously record your heart's electrical activity while you go about your daily activities and even while you sleep.
Are there different stages of AFib?
Yes, AFib is a ``progressive`` condition. That is, it can go through different stages and get worse over time. Doctors consider these stages when diagnosing and treating AFib:
- Stage 1: At risk for AFib
- Stage 2: Pre-AFib
- Stage 3: AFib `(AFib)` (This also has several sub-stages)
- Stage 4: Permanent AFib
Stage 1: At risk for AFib
This means that you have risk factors that may increase your risk of developing AFib. For example:
- High blood pressure
- Obesity
- Diabetes
- Snoring and breathing difficulties (Sleep apnea)
- Excessive alcohol use
- Cardiovascular system disorders
- Over 65 years of age
If you have these things, you may be at risk for developing AFib.
Stage 2: Pre-AFib
At this point, you may notice some changes in the electrical activity or structure of your heart. These increase your risk of developing AFib. Doctors look for signs like these:
- Atrial tachycardia
- Atrial flutter
- Enlarged left and/or right atrium
- Frequent ectopic heartbeats
Also, people with conditions that put them at higher risk for AFib, such as `(Coronary artery disease)`, `(Heart failure)`, `(Heart valve disease)`, `(Hyperthyroidism)`, `(Hypertrophic cardiomyopathy)`, and `(Neuromuscular disorders)`, may fall into this second stage.
Stage 3: AFib (there are parts to this too)
If an ECG confirms that you have AFib, you're in this stage. But this stage can vary. Some people have symptoms that come and go, while others continue to have AFib despite treatment. That's why doctors divide this stage into four sub-stages:
- Paroxysmal AFib: In this type of AFib, AFib occurs sporadically and resolves on its own within a week, often without treatment. However, you may still experience discomfort during this short period. You are also at higher risk of stroke than people without AFib.
- Persistent AFib: This is when AFib is persistent , meaning it lasts for more than a week. Treatment is needed to stop it.
- Long-standing persistent AFib: In this case, AFib persists for a year or more.
- After successful ablation treatment: AFib has stopped after surgery or catheter-based treatment (ablation).
Once you're diagnosed with AFib, you may move back and forth between these sub-stages. For example, even after a successful ablation, persistent AFib may return over time.
Stage 4: Permanent AFib
This means that you and your doctor have decided together that you will no longer be treated to control your AFib, and that you will remain in AFib permanently. This decision is made based on your individual situation.
What are the treatments for AFib?
AFib can be treated with one or more of the following:
- Lifestyle changes
- Medications
- Ablation therapy
- Other treatments
Lifestyle changes
These are things you can do every day to help prevent AFib from getting worse. These lifestyle changes are important even before you start having symptoms. Your doctor can help you with these things:
- Helping you maintain a healthy weight .
- Limiting alcohol consumption.
- Completely abstain from the use of tobacco products (such as cigarettes).
- Getting the recommended amount of physical exercise daily.
- Good control of conditions that increase the risk of AFib, such as high blood pressure, obesity, obstructive sleep apnea, and diabetes.
Medications
Your doctor may prescribe medications to control your heart rate and/or heart rhythm. These medications can help prevent damage to your heart and reduce the discomfort and anxiety you may feel. Your doctor may also prescribe medications to reduce the risk of blood clots and stroke.
The types of medications needed to control AFib can change over time. Typically, if you are at risk for stroke, you will need to take blood-thinning medications (anticoagulants) . Doctors most often prescribe oral anticoagulants (DOACs - Direct Oral Anticoagulants). Examples:
- `Apixaban`
- `Rivaroxaban`
- `Dabigatran`
- `Edoxaban`
In some cases, a drug called ``Warfarin'' is prescribed instead of ``DOACs''.
Medications to manage your heart rate:
- `Carvedilol`
- `Digoxin`
- `Diltiazem`
- `Metoprolol`
- `Verapamil`
Medications that help your heart beat in a normal rhythm:
- `Amiodarone`
- `Dofetilide`
- `Dronedarone`
- `Flecainide`
- `Propafenone`
Ablation therapy (Ablation for AFib)
Ablation for AFib is a general term for a group of treatments that create small amounts of scar tissue in certain areas of the heart. While we usually think of scar tissue as something harmful, in this case, this scar tissue helps the heart's electrical system work properly. This scar tissue blocks the abnormal electrical signals from going through the heart. This helps the heart's rhythm return to normal.
There are several specific ablation procedures that your cardiologist may recommend for AFib:
- Catheter ablation: This is a minimally invasive treatment. The surgeon inserts a thin tube (catheter) through one of your blood vessels into your heart. Pulmonary vein isolation (PVI ablation) is also the most common type of catheter ablation for AFib.
- Maze procedure: This is also called surgical ablation. The surgeon creates a "maze" pattern of scar tissue in the heart to block the irregular signals. This is often done at the same time as other heart surgery (such as coronary artery bypass grafting or valve surgery).
Other treatments
Some other ways to treat AFib:
- Cardioversion: In this procedure, the doctor returns your heart rhythm to normal, either by using an electronic device (defibrillator) or by administering medication.
- Left atrial appendage (LAA) closure: If you can't tolerate blood thinners, a small device can be implanted in your heart to reduce your risk of stroke. This works by closing off the left atrial appendage, a small sac-like part of the heart that can easily form blood clots.
Does the heart return to normal after AFib?
Yes, sometimes your heart will return to a normal rhythm on its own. This is what happens in ``Paroxysmal AFib``. If you have ``persistent`` or ``long-standing AFib``, you will need treatment to stop the irregular heartbeat.
But the most important thing is that AFib cannot be cured. It is a lifelong condition. Your doctor can help you manage it. Treatment can reduce your risk of stroke and make your symptoms less severe.
How long can you live with AFib?
A study published in 2024 found that people with AFib may have a slightly shorter life expectancy than those without AFib. This varies depending on the age at diagnosis.
But remember, statistics only tell one side of the story. If you work with your medical team to properly manage your AFib and other medical conditions, you have a good chance of living a long, healthy life .
How do I take care of myself?
The same habits that reduce your risk of AFib will help you stay well even when you have AFib.
- Eating nutritious food .
- Exercising for 30 minutes a day, at least 5 days a week, is very good for the heart. If you find it difficult to exercise continuously, you can also break it up into 10-minute intervals.
- Giving up tobacco products and alcohol is also a great help to the heart.
When should I see the doctor?
There is no one-size-fits-all schedule for this. It depends on your symptoms, treatment plan, and follow-ups if you have had any procedures. So, it's important to talk to your doctor and come up with a plan that works for you.
- See the doctor on time without missing any appointments.
- Always keep a list of the medications you take with you, and take it with you when you go to the doctor. It's also a good idea to keep this list in your purse in case of an emergency.
- At each appointment, tell your doctor about any new symptoms you have and any side effects from your medications.
- Always ask your doctor before taking over-the-counter (OTC) medications (e.g., cold and cough medicines) and nutritional supplements. Sometimes these can affect your heart rate or interact with other medications you are taking.
What questions should you ask the doctor?
Some questions you can ask your doctor:
- How can I reduce my risk factors?
- Can you put me in touch with a dietitian?
- Can you recommend any health and fitness programs nearby?
Can you check for AFib at home?
If you think you have symptoms of AFib, the most important thing is to call your doctor right away and tell them what you're feeling. They'll probably tell you to check your pulse. If it's irregular or weak, it could be a sign of AFib.
But sometimes, you may not feel any changes in your pulse, especially if your AFib is not very severe. Instead, you may just feel tired or short of breath. You may not be able to tell if your symptoms are due to AFib or something else. That's why it's important to talk to your doctor. You can't decide for yourself that you have AFib.
How common is AFib?
More than 33 million people over the age of 55 worldwide have been diagnosed with AFib. In the United States alone, it is estimated that 12 million people will have AFib by 2030. AFib causes nearly half a million hospitalizations in the United States each year, and the number of deaths from it is increasing every year.
Finding out you have AFib can be scary, overwhelming, and confusing. But you're not alone. Millions of people around the world are learning new ways to manage the condition and living happier lives. Your doctor can tell you more about treatment options, resources, and support communities.
So, what are the most important things we need to remember from this article?
Okay, so here are some things to keep in mind from what we've talked about:
- AFib is a condition in which the heart rhythm is irregular, and can be serious, even without symptoms. There is a risk of complications, especially stroke.
- Be aware of symptoms such as chest tightness, fatigue, dizziness, and difficulty breathing. If you experience any of these, be sure to see a doctor.
- AFib is a treatable condition. It can be well controlled with lifestyle changes, medications, and in some cases, treatments such as ``ablation''.
- Maintaining a healthy lifestyle (good nutritious diet, regular exercise, and avoiding smoking and alcohol) is very important for AFib control and heart health.
- You are not alone in this journey. Talk to your doctor to develop a treatment plan and management strategy that works best for you. Don't be afraid to ask questions and share your feelings.
Remember, awareness is the first step to a healthy life!
` Atrial Fibrillation, AFib, heart rhythm, irregular heartbeat, stroke, heart attack, heart disease, chest pain, heart rate, heart health
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