Arrhythmia (also called an irregular heartbeat) is a condition in which the heart beats too fast, too slow, or in an uneven rhythm. Normally, the heart’s electrical system controls a steady heartbeat. When these electrical signals don’t work properly, the rhythm becomes abnormal.
Symptoms vary depending on the type but may include palpitations (fluttering or pounding heartbeat), dizziness, shortness of breath, chest discomfort, fatigue, or fainting. Some people may have no symptoms at all.
Underlying heart disease, such as coronary artery disease or a prior heart attack, and high blood pressure can increase the risk. Other important contributors are electrolyte imbalances, thyroid disorders, diabetes, obesity, smoking, and increasing age.
Treatment depends on the type and severity. Options include lifestyle changes, medications, procedures like cardioversion or catheter ablation, pacemakers, or implantable defibrillators. Early diagnosis and medical guidance are important to prevent complications.
Atrial flutter
Atrial tachycardia
Multifocal atrial tachycardia
Wolff-Parkinson-White syndrome
Atrioventricular nodal reentry tachycardia
Blood tests: Serum electrolytes, Thyroid profile, and Total cholesterol
Holter monitor
Implantable loop recorder
Electrophysiology study (EPS)
Genetic testing
Medicine for slow heart rate: Atropine
Antiarrhythmic drugs: Amiodarone, Flecainide and Sotalol
Beta-blockers: Metoprolol, Atenolol, and Bisoprolol
Sodium channel blockers: Propafenone and Quinidine
Procedures: Cardioversion and catheter ablation.
Arrhythmias are grouped based on how fast the heart beats and where the abnormal rhythm starts. Here are the main types explained simply:
Bradyarrhythmia (slow heartbeat): The heart beats slower than normal, below 60 beats per minute. Some people feel fine, but others may feel exhausted, dizzy, or faint if the heart cannot pump enough blood.
Tachyarrhythmia (rapid heartbeat): The heart beats faster than normal above 100 beats per minute at rest. It may feel like a racing or pounding heart and can cause breathlessness or chest discomfort.
Premature or extra heartbeats: The heart beats earlier than expected, followed by a pause. It often feels like a “skipped beat” or sudden thump and is usually harmless.
Atrial fibrillation (AFib): The most common arrhythmia. The upper chambers of the heart beat very fast and irregularly. This can reduce blood flow and increase the risk of stroke and heart failure.
Atrial flutter: Similar to AFib but more regular. The upper chambers beat very fast, and the heart’s chambers may not work together properly.
Paroxysmal supraventricular tachycardia (PSVT): Causes sudden episodes of a very fast heartbeat that start and stop abruptly. It is often seen in younger people and is usually not life-threatening but may need treatment.
Ventricular tachycardia: The lower chambers beat too fast and regularly. Short episodes may be mild, but longer episodes can be serious and need urgent care.
Ventricular fibrillation (V-fib): The lower chambers quiver (or tremble) instead of pumping blood. This is a life-threatening emergency that can cause cardiac arrest within minutes if untreated.
An arrhythmia may sometimes cause no noticeable symptoms and be found only during a routine check-up. Common symptoms can include:
Heart palpitations (feeling like your heart is skipping, fluttering, pounding, or beating too hard or fast)
Slow or irregular heartbeat
Anxiety or nervousness
Chest pain or discomfort
Difficulty breathing or gasping during sleep
Dizziness or lightheadedness
Fainting or near-fainting episodes
Tiredness or weakness
Sweating during episodes
Reduced exercise tolerance.
People with atrial fibrillation (AFib) are much more likely to have a stroke than those without it. That’s why knowing the early warning signs of a stroke can help you get help in time and save lives.
To understand the cause of heart arrhythmias, you need to understand how the heart works.
How does the heart normally beat?
The heart has four chambers—two upper chambers (atria) and two lower chambers (ventricles).
A natural electrical system controls each heartbeat.
The signal starts in a small area called the sinus node, travels through the heart, and tells it when to beat and pump blood.
When this system works smoothly, the heart beats regularly (about 60–100 beats per minute).
What goes wrong in arrhythmia?
Arrhythmia happens when electrical signals become too fast, too slow, or irregular.
This can happen if the heart’s electrical pathways are damaged, irritated, or blocked due to conditions like heart disease, high blood pressure, or scarring of heart tissue.
As a result, the heart may beat irregularly, too quickly, or too slowly, and it may not pump blood efficiently into the body.
When such an event happens, people may feel palpitations, dizziness, tiredness, or breathlessness, especially if the irregular rhythm continues.
Some risk factors for arrhythmia cannot be changed, while others are linked to lifestyle or health conditions that can be managed. These can include:
Age: As we grow older, natural changes such as scarring or stiffening of the heart can disrupt electrical signals. Some inherited or birth-related arrhythmias may appear earlier in life.
Family history and genetics: Arrhythmias can run in families. Having a close relative with an arrhythmia can raise your risk.
Congenital heart defects: Some people are born with heart structure or electrical system problems that increase the risk of arrhythmia.
Past heart damage: Previous heart attacks or heart surgery can leave scars that interfere with normal electrical signals.
Smoking: Damages blood vessels and irritates the heart’s electrical system, increasing rhythm problems.
Need help quitting smoking? Explore our smoking cessation range.
Use of illegal drugs (such as cocaine or amphetamines): Strongly overstimulates the heart.
High caffeine intake: May cause palpitations in sensitive people.
Poor sleep or untreated sleep apnea: Repeated pauses in breathing during sleep lower oxygen levels, which puts extra strain on the heart and can trigger irregular heartbeats.
Read more about the 7 effective ways to combat sleep apnea naturally.
Obesity: Increases heart workload and rhythm risk.
Ongoing stress or anxiety: Stress hormones can disrupt the normal heartbeat.
Explore our wide range of mental wellness products to support your mental health. Just be sure to consult your doctor before starting anything new.
Thyroid disorders (overactive or underactive thyroid)
Heart diseases
Chronic kidney disease (CKD) disturbs mineral balance in the body, increasing the risk of irregular heartbeats.
Kidney or lung diseases, such as chronic obstructive pulmonary disease (COPD)
Viral infections, including influenza or COVID-19
Quick Byte:
Even after recovering from COVID-19, some people may develop heart rhythm problems. The infection can irritate the heart or affect its electrical system, increasing the risk of irregular heartbeats weeks or months later, especially after moderate to severe illness.
Certain heart, blood pressure, or mental health medicines
Some antibiotics, such as azithromycin, clarithromycin
Over-the-counter cold and allergy medicines
If you have a family history or may be at risk, don’t wait for symptoms to appear. Explore our range of cardiac care products to support a healthier heart!
Doctors use a combination of questions, physical checks, and simple tests to find the exact cause of an irregular heartbeat.
Your doctor will ask about your symptoms, family history of heart problems, daily habits, and medicines.
A physical exam includes checking your pulse, listening to your heartbeat, and looking for signs like leg swelling or thyroid problems that may affect heart rhythm.
A portable device records heart rhythm during daily activities for 24 - 48 hours, helping detect irregular beats that come and go.
A small device placed under the skin that tracks heart rhythm over long periods. It helps identify the cause of infrequent palpitations or fainting.
A specialized test that studies the heart’s electrical pathways in detail. It helps pinpoint where the rhythm problem starts and guides treatment.
It is used to evaluate unexplained fainting. Heart rate and blood pressure are monitored while your body position is changed from lying down to sitting upright.
It checks how your heart responds to physical activity, helping detect exercise-related rhythm problems, reduced blood flow to the heart, and how well your heart handles exertion.
Your doctor may suggest a blood test to check for any electrolyte imbalance or other disorders. These tests may include:
Get a clearer picture of your heart health by checking key cardiac risk markers early.
Chest X-ray: This test is advised to help him determine the size of the heart. While it doesn’t directly detect arrhythmias, it can reveal heart enlargement or lung changes that may be linked to underlying rhythm disorders.
Electrocardiography (ECG): Records the heart’s electrical activity and is the primary test to detect arrhythmias, helping identify irregular heart rhythms, their type, and severity.
Echocardiography (echo or echocardiogram): Uses ultrasound to evaluate the heart’s structure and function. It helps identify structural problems (like valve issues or chamber enlargement) that may cause or contribute to arrhythmias.
Cardiac Magnetic Resonance Imaging (MRI): Cardiac MRI creates detailed images of the heart to detect scarring, inflammation, or structural problems that may trigger abnormal heart rhythms
Checks for inherited rhythm disorders, especially if arrhythmias or sudden cardiac events run in the family.
Stay on top of your heart health with easy and accurate lab tests from Tata 1mg. Book now for reliable results from the comfort of your home!
Protecting your heart can prevent many arrhythmias or reduce their frequency. Here are a few preventive tips that can help:
Stay away from stimulants like energy drinks, excess caffeine, and recreational drugs, as these can overstimulate the heart and trigger abnormal rhythms.
High blood pressure, diabetes, thyroid problems, and lung disease can affect heart rhythm if uncontrolled. Adhering to the treatment keeps the heart’s electrical system stable.
Keeping your heart rhythm steady by regularly tracking blood pressure and blood sugar at home can make a big difference in early control.
Stress can elevate your blood pressure. Trying mind-body practices and meditation can help in managing stress and thereby preventing heart disease.
Struggling to manage stress with chronic conditions? Understanding the mind-body connection is key. Listen to our expert break it down for you.
Nicotine overstimulates the heart and increases rhythm problems. Quitting improves heart rhythm and overall circulation.
Curious how smoking, vaping, and e-cigarettes affect your heart and what changes when you quit? Read how your body starts healing after you stop smoking.
Poor sleep or untreated sleep apnea can reduce oxygen levels at night, putting extra stress on the heart and increasing the risk of arrhythmias.
Aim for 7–9 hours of consistent sleep each night, and maintain a regular bedtime routine.
Learn how insufficient sleep may affect your heart and what you can do about it.
.
Potassium helps regulate heart rhythm. Include potassium-rich foods such as bananas, oranges, spinach, sweet potatoes, and beans, unless your doctor advises otherwise.
General physicians are generally the first point of contact. After initial evaluation they can refer you to specialists who help diagnose and treat arrhythmias, including
Cardiologist
Electrophysiologist (heart rhythm specialist)
A cardiologist evaluates irregular heartbeats and manages arrhythmias with medicines, lifestyle advice, or non-surgical procedures.
An electrophysiologist is a cardiologist with advanced training in heart rhythm disorders. They perform specialized procedures when needed.
Seek medical advice if you notice:
Frequent or persistent palpitations
Irregular or fast heartbeat
Dizziness or unexplained fatigue
Palpitations with fainting, severe chest pain, or difficulty breathing
Don’t ignore unusual heart symptoms. Get expert advice from the comfort of your home.
Treatment depends on the type, severity, and underlying cause of arrhythmia. Along with lifestyle changes, options of arrhythmia treatment include:
Treatment for arrhythmia depends on whether the heart is beating too slowly, too rapidly, or irregularly and on your overall heart health.
Atropine: Used in emergencies to quickly increase a dangerously slow heart rate.
Antiarrhythmic drugs: These medicines act directly on the heart’s electrical system to correct abnormal rhythms.
Example: Amiodarone, Flecainide, Sotalol
Adenosine: Rapidly stops certain very fast heart rhythms, mainly in emergency situations.
Calcium channel blockers: Slow electrical signals in the heart and relax blood vessels to control rhythm.
Example: Diltiazem, Verapamil
Beta-blockers: Slow the heart rate and reduce strain by blocking stress hormones like adrenaline.
Example: Metoprolol, Atenolol, Bisoprolol
Anticoagulants: Lower the risk of blood clots and stroke, especially in atrial fibrillation.
Example: Warfarin, Apixaban
Digoxin: Helps slow the heart rate and improves pumping efficiency, mainly in AFib.
Sodium channel blockers: Control abnormal electrical signals but are used cautiously in people with existing heart disease.
Examples: Propafenone, Quinidine
Note: Medicines must be taken exactly as prescribed, as incorrect doses can sometimes worsen arrhythmias.
Get genuine medicines delivered to your doorstep from India’s most trusted online pharmacy.
Cardioversion: This procedure uses a controlled electrical shock to reset the heart to a normal rhythm, most often for atrial fibrillation. It’s done under short anesthesia, so you don’t feel pain.
Catheter ablation: A minimally invasive procedure that destroys tiny heart areas causing abnormal signals. It can fix the rhythm problem at its source and reduce long-term medicine use.
A healthy lifestyle plays a crucial role in the management and treatment of arrhythmia. Here are a few tips to manage arrhythmia at home:
Eat fruits and vegetables, low-fat dairy products, and lean protein such as chicken without the skin.
Include healthy fats like olive or canola oil, walnuts, seeds, and avocados to support heart health.
Limit saturated and trans fats found in fried foods, bakery items, butter, ghee, and fatty meats, as they raise bad (LDL) cholesterol.
Limit salt in your diet as excess salt can cause fluid retention and strain your heart. It also elevates your blood pressure.
Cut down on added sugars from sweets and sugary drinks to protect heart health.
Avoid highly processed and packaged foods, which are often high in salt, unhealthy fats, and hidden sugars.
Want simple, expert-approved food tips to keep your heart healthy? Hear it straight from a nutritionist.
Watch Now
Physical activity is good for the heart’s health, and it improves cardiovascular endurance. However, you should seek advice from your doctor about your exercise regime.
Confused about heart-safe exercises?
Aim for a healthy weight with a BMI between 18.5 and 24.9. Try to reduce belly fat in particular, as fat around the waist puts more strain on the heart than fat in other areas.
Achieve your weight loss goals with Tata 1mg’s medically supervised weight management program.
If arrhythmias are left untreated, they can sometimes cause severe complications, such as
Stroke: Irregular heartbeats can cause blood to pool and form clots. If a clot travels to the brain, it can block blood flow and cause a stroke.
Cardiac arrest: Some dangerous arrhythmias can suddenly stop the heart from beating, which is life-threatening and needs immediate medical help.
Heart failure: Repeated or long-standing arrhythmias can weaken the heart muscle, making it harder for the heart to pump enough blood.
Persistent tachycardia: A continuously fast heart rate can strain the heart over time and increase the risk of other complications.
Atrial fibrillation complications: This common type of arrhythmia increases the risk of stroke, heart failure, and other heart-related problems if not managed properly.
By ensuring to follow a few simple changes, you can protect your heart and feel your best, which include:
Regular check-ups help your doctor monitor your heart rhythm and adjust treatment if needed.
Take medicines exactly as prescribed and never stop them suddenly without medical advice.
If you notice side effects or new symptoms, inform your doctor promptly.
Pay attention to warning signs like dizziness, fainting, chest discomfort, or strong palpitations.
If they occur, sit or lie down immediately and avoid driving.
Learn how to check your pulse and keep a simple record to share during doctor visits.
Seek immediate help if you experience severe chest pain, breathlessness, sudden weakness, or fainting.
Discuss with your doctor which symptoms require urgent care.
Acting quickly can prevent serious complications.
Ask your doctor what type of physical activity is safe for you.
Light to moderate exercise is often encouraged, but high-intensity or risky activities may need caution.
If you have a pacemaker or ICD, follow specific safety advice regarding sports and electronic devices.
Create a clear medication schedule with your doctor to avoid missed doses or drug interactions.
Inform them about any over-the-counter medicines, supplements, or herbal products you take.
Some painkillers and cold medicines may worsen heart rhythm; always check before using them.
Staying consistent with your medicines can make a big difference in managing arrhythmia. Here are a few tips to stay on track with your medications.
Not all irregular heartbeats start in the heart itself. Dehydration, stress, low potassium or magnesium levels, and sudden blood sugar changes can trigger arrhythmias.
Simple blood tests can help identify electrolyte imbalances early and support timely heart care. Check your electrolyte levels and overall heart health with a simple test.
Omega-3s support heart health by lowering triglycerides and blood pressure, but they don’t replace medical treatment and should be taken only after a doctor’s advice.
If you don’t get enough omega-3s from food, supplements may be helpful but always consult your doctor first.
