What Is Supraventricular Tachycardia?

Supraventricular Tachycardia (SVT) is a rapid heart rate originating above the heart's ventricles. Learn about its causes, symptoms, and how it can be treated.
Explore Plans
Check Health Insurance Plans
Get Quote
3 min
08-July-2025

Supraventricular Tachycardia (SVT) is a type of abnormal heart rhythm originating in the upper chambers of the heart. It is characterised by a rapid heartbeat that can last from a few seconds to several hours. Although it can occur in anyone, SVT is more common among young adults, especially women, and can be triggered by factors such as stress, exercise, or certain medications. While SVT is typically not life-threatening, the symptoms can be unsettling, and treatment is often necessary for individuals experiencing frequent episodes. Understanding SVT, including its causes, symptoms, and treatment options, can empower those affected to manage the condition and improve their quality of life.

What is Supraventricular Tachycardia?

Supraventricular tachycardia (SVT) is a condition where the heart beats unusually fast, originating in the upper chambers. When this rapid heartbeat occurs at rest, it can affect the heart’s ability to pump enough blood throughout the body. Episodes may last from a few seconds to several hours.

During SVT, the heart doesn’t get enough time to fill with blood before each contraction, which can reduce overall circulation.

If you experience symptoms, you might sense something unusual in your chest. While it may be uncomfortable, paying attention to your symptoms and their duration can help your doctor make an accurate diagnosis.

Types of SVT

There are several forms of supraventricular tachycardia (SVT), each with distinct characteristics. These include:

  • Premature Atrial Contractions (PACs)
  • Paroxysmal Supraventricular Tachycardia (PSVT)
  • Accessory Pathway Tachycardias, such as Wolff-Parkinson-White (WPW) Syndrome
  • AV Nodal Reentrant Tachycardia (AVNRT)
  • Atrial Tachycardia
  • Atrial Fibrillation
  • Atrial Flutter

Each type originates above the ventricles and can affect the heart's rhythm and efficiency.

Read more: Thyroid-Stimulating Hormone (TSH) level

What are the symptoms of Supraventricular Tachycardia?

SVT symptoms can range from mild to severe, depending on factors like the heart rate during episodes and the individual’s overall health.

Rapid heartbeat: The primary symptom of SVT is a noticeably fast heart rate, which may feel like a racing or pounding sensation.

Chest discomfort: Many people experience a feeling of tightness or pain in the chest during an episode.

Shortness of breath: A faster heart rate can make breathing feel labored or shallow.

Dizziness or lightheadedness: Reduced blood flow to the brain during SVT can cause sensations of dizziness or faintness.

Sweating: Many people experience excessive sweating during an episode due to the heightened heart rate.

Anxiety or panic: The sudden onset of SVT symptoms can often induce anxiety or a feeling of panic, which may further worsen symptoms.

Fatigue: An episode of SVT can leave individuals feeling tired or drained after it subsides.

What causes Supraventricular Tachycardia?

The causes of SVT are multifactorial, ranging from structural heart issues to lifestyle-related triggers. In some cases, the exact cause is unknown, while in others, it may be linked to specific health conditions or behaviors.

  • Structural heart abnormalities: Certain congenital heart defects or scar tissue from a previous heart surgery can lead to SVT.
  • Excessive caffeine or alcohol consumption: High intake of stimulants can trigger SVT episodes in susceptible individuals.
  • Certain medications: Over-the-counter decongestants, asthma drugs, or medications containing stimulants can sometimes cause SVT.
  • Stress and anxiety: Emotional stress and anxiety can exacerbate SVT by stimulating the body’s “fight or flight” response.
  • Electrolyte imbalances: Low levels of essential minerals like potassium, calcium, or magnesium can lead to abnormal heart rhythms, including SVT.
  • Thyroid disease: An overactive thyroid can increase the likelihood of developing SVT.
  • Smoking: Smoking or exposure to nicotine can cause heart irregularities, including SVT.
  • Genetic predisposition: Some people may have an inherited tendency toward arrhythmias, including SVT.

What Are The Risk Factors Of Supraventricular Tachycardia?

SVT can affect both children and adults, but certain factors may increase your risk of developing this condition:

  • Being female
  • Experiencing anxiety or high stress levels
  • Consuming excessive alcohol beyond recommended limits
  • Using tobacco products
  • Drinking too much caffeine
  • Engaging in intense physical training or exertion
  • Having underlying conditions like lung disease, heart problems, thyroid disorders, or diabetes
  • Being pregnant, which can increase heart strain due to hormonal and circulatory changes

Managing these risk factors may help reduce the frequency or severity of SVT episodes.

What are the complications of Supraventricular Tachycardia (SVT)?

In severe cases, SVT can lead to serious health complications, including:

  • Heart failure, due to the heart's reduced ability to pump blood efficiently
  • Loss of consciousness (fainting), caused by insufficient blood flow to the brain
  • Cardiac arrest, a life-threatening emergency where the heart suddenly stops beating

Prompt diagnosis and treatment are essential to prevent these complications.

How Is Supraventricular Tachycardia diagnosed?

Diagnosing SVT usually involves a comprehensive assessment, including a physical examination, discussion of medical history, and several diagnostic tests to identify the specific type of arrhythmia and rule out other potential causes.

Electrocardiogram (ECG):

An ECG is the primary tool for detecting abnormal heart rhythms by recording the electrical activity of the heart.

Holter monitor:

A portable device worn for 24 to 48 hours, a Holter monitor records continuous ECG readings to catch intermittent episodes of SVT.

Event monitor:

If SVT episodes are infrequent, an event monitor may be used to record heart activity only when symptoms occur.

Electrophysiology study:

In cases where the cause of SVT is unclear, an electrophysiology study may be conducted to map the heart’s electrical activity and pinpoint the area causing the irregular rhythm.

Echocardiogram:

This imaging test uses sound waves to produce images of the heart, helping doctors identify structural heart issues that may be linked to SVT.

Blood tests:

Blood tests are sometimes performed to check for electrolyte imbalances or thyroid dysfunction, both of which can trigger SVT.

What treatment options are available for Supraventricular Tachycardia?

Treatment for SVT varies based on the frequency, severity, and underlying cause of the episodes. The goal of treatment is to manage symptoms, prevent recurrence, and improve the individual’s quality of life.

Vagal maneuvers:

Techniques such as the Valsalva maneuver or cold-water face immersion can sometimes halt SVT episodes by stimulating the vagus nerve and slowing the heart rate.

Medications:

Beta-blockers, calcium channel blockers, or antiarrhythmic medications can help regulate heart rate and prevent episodes. However, these drugs may have side effects and are typically prescribed only for individuals with frequent or severe symptoms.

Catheter ablation:

In cases where SVT is recurring and significantly affecting quality of life, catheter ablation may be recommended. This minimally invasive procedure involves using a catheter to destroy the tissue causing the abnormal heart rhythm.

Electrical cardioversion:

If an SVT episode does not respond to other interventions, electrical cardioversion may be used to reset the heart’s rhythm using controlled electric shocks.

Implantable devices:

Rarely, an implantable device, such as a pacemaker, is used to control heart rhythm in cases where other treatments have failed.

How to prevent Supraventricular Tachycardia?

If your SVT is linked to modifiable factors, you can reduce your risk by:

  • Managing stress through relaxation techniques or therapy
  • Limiting or avoiding alcohol
  • Quitting tobacco use
  • Reducing your intake of caffeine (e.g., coffee, energy drinks)
  • Ensuring you get adequate rest and sleep

Additionally, it's important to continue taking any prescribed medications as directed by your healthcare provider.

How can lifestyle changes help manage Supraventricular Tachycardia?

Incorporating certain lifestyle changes can help reduce the frequency and severity of SVT episodes, providing additional support alongside medical treatment.

  • Reduce caffeine and alcohol: Reducing or eliminating stimulants can decrease the likelihood of SVT episodes.
  • Practice stress management: Techniques like meditation, yoga, and deep breathing exercises can help manage stress and anxiety, reducing triggers for SVT.
  • Maintain a healthy diet: Eating a balanced diet with plenty of fruits, vegetables, and whole grains supports heart health and overall well-being.
  • Stay hydrated: Dehydration can affect electrolyte levels and increase the risk of SVT; drinking adequate water daily is essential.
  • Avoid smoking: Quitting smoking can improve heart health and reduce the risk of abnormal rhythms.
  • Get regular exercise: Regular, moderate exercise can improve cardiovascular health, although intense workouts should be approached cautiously for individuals with SVT.
  • Maintain a healthy weight: Excess weight can put additional strain on the heart, so achieving and maintaining a healthy weight can be beneficial.

Health Insurance and Supraventricular Tachycardia

Managing a chronic condition like SVT can lead to regular medical appointments, tests, and potentially long-term medication use. Health insurance is crucial for covering these ongoing expenses. Many health insurance plans offer coverage for arrhythmias, including SVT, under broader cardiovascular health benefits. It’s essential to verify whether a health plan covers treatments like electrophysiology studies, catheter ablation, and medications specifically used to manage SVT.

For individuals diagnosed with SVT, comprehensive health insurance can help manage the financial impact of treatment. When selecting a health plan, review the coverage details for heart-related conditions and consult with a healthcare provider to understand any specific needs you may have. Health insurance also provides peace of mind, ensuring access to necessary treatments if more advanced care, like an ablation or pacemaker implantation, becomes essential.

When should you see a doctor for Supraventricular Tachycardia?

It’s essential to seek medical advice if you experience any symptoms of SVT, even if episodes are infrequent. Additionally, consult a healthcare provider if you notice the following:

  • Episodes lasting longer than a few minutes or occurring frequently.
  • Severe symptoms such as chest pain, fainting, or difficulty breathing.
  • Family history of arrhythmias or other heart conditions.
  • The appearance of new symptoms or changes in existing symptoms.
  • Prompt medical evaluation can prevent complications and help individuals develop an effective management plan for SVT.

Conclusion

Supraventricular Tachycardia is a manageable heart condition with proper understanding, diagnosis, and treatment. Although it may not be life-threatening, SVT can impact an individual’s quality of life due to its uncomfortable symptoms. With a combination of lifestyle changes, medical treatment, and health insurance coverage, those affected by SVT can effectively manage their condition and reduce the frequency of episodes. If you suspect you have SVT or are experiencing its symptoms, consider seeking professional medical advice for a diagnosis and tailored management plan.

     Also Read

Diseases Covered in Health Insurance

Health Insurance for Kidney Failure

Health Insurance for Heart Attack



Frequently asked questions

Is supraventricular tachycardia a serious condition?
Supraventricular Tachycardia (SVT) is generally not life-threatening for most people, but it can cause discomfort and impact daily life. In severe cases or with prolonged episodes, SVT may increase the risk of complications, especially if untreated.

Can supraventricular tachycardia be cured?
SVT can often be effectively managed, and treatments like catheter ablation offer a potential cure by eliminating the tissue causing abnormal rhythms. However, recurrence may happen, so ongoing management or follow-up may be necessary.

How can I prevent episodes of supraventricular tachycardia?
To help prevent SVT episodes, avoid stimulants like caffeine, reduce stress, engage in regular exercise, and ensure you stay hydrated. Additionally, avoiding smoking and maintaining a healthy weight can support overall heart health and reduce the risk of episodes.

What is the main cause of Supraventricular Tachycardia (SVT)?

The main cause of SVT is abnormal electrical pathways in the heart that disrupt normal rhythm, often due to extra electrical circuits. This can be congenital (present at birth) or triggered by factors like stress, caffeine, alcohol, smoking, certain medications, or underlying heart conditions.

What is the best medication for supraventricular tachycardia?

The choice of medication depends on the type and frequency of SVT episodes. Commonly used drugs include:

  • Beta-blockers (e.g., metoprolol)
  • Calcium channel blockers (e.g., verapamil, diltiazem)
  • Antiarrhythmic drugs (e.g., flecainide, propafenone)
  • Adenosine (used to stop acute episodes quickly under medical supervision)

Always consult a cardiologist to determine the safest and most effective medication for your specific condition.

Show More Show Less

Bajaj Finserv App for all your financial needs and goals

Trusted by 50 million+ customers in India, Bajaj Finserv App is a one-stop solution for all your financial needs and goals.

You can use the Bajaj Finserv App to:

Apply for loans online, such as Instant Personal Loan, Home Loan, Business Loan, Gold Loan, and more.

  • Explore and apply for co-branded credit cards online.
  • Invest in fixed deposits and mutual funds on the app.
  • Choose from multiple insurance for your health, motor and even pocket insurance, from various insurance providers.
  • Pay and manage your bills and recharges using the BBPS platform. Use Bajaj Pay and Bajaj Wallet for quick and simple money transfers and transactions.
  • Apply for Insta EMI Card and get a pre-approved limit on the app. Explore over 1 million products on the app that can be purchased from a partner store on Easy EMIs.
  • Shop from over 100+ brand partners that offer a diverse range of products and services.
  • Use specialised tools like EMI calculators, SIP Calculators
  • Check your credit score, download loan statements, and even get quick customer support—all on the app.
Download the Bajaj Finserv App today and experience the convenience of managing your finances on one app.

Do more with the Bajaj Finserv App!

UPI, Wallet, Loans, Investments, Cards, Shopping and more

GET THE APP

Disclaimer

*T&C Apply - Bajaj Finance Limited (‘BFL’) is a registered corporate agent of third party insurance products of Bajaj Allianz Life Insurance Company Limited, HDFC Life Insurance Company Limited, Future Generali Life Insurance Company Limited, Bajaj Allianz General Insurance Company Limited, SBI General Insurance Company Limited, ACKO General Insurance Limited, ICICI Lombard General Insurance Company Limited, HDFC ERGO General Insurance Company Limited, Tata AIG General Insurance Company Limited, The New India Assurance Company Limited, Cholamandalam MS General Insurance Company Limited, Niva Bupa Health Insurance Company Limited , Aditya Birla Health Insurance Company Limited, Manipal Cigna Health Insurance Company Limited and Care Health Insurance Company Limited under the IRDAI composite CA registration number CA0101. Please note that, BFL does not underwrite the risk or act as an insurer. Your purchase of an insurance product is purely on a voluntary basis after your exercise of an independent due diligence on the suitability, viability of any insurance product. Any decision to purchase insurance product is solely at your own risk and responsibility and BFL shall not be liable for any loss or damage that any person may suffer, whether directly or indirectly. Please refer insurer's website for Policy Wordings. For more details on risk factors, terms and conditions and exclusions please read the product sales brochure carefully before concluding a sale. Tax benefits applicable if any, will be as per the prevailing tax laws. Tax laws are subject to change. Tax laws are subject to change. BFL does NOT provide Tax/Investment advisory services. Please consult your advisors before proceeding to purchase an insurance product. Visitors are hereby informed that their information submitted on the website may also be shared with insurers. BFL is also a distributor of other third party products from Assistance Services providers such as CPP Assistance Services Pvt. Ltd., Bajaj Finserv Health Ltd. etc. All product information such as premium, benefits, exclusions, sum insured, value added services, etc. are authentic and solely based on the information received from the respective insurance company or the respective Assistance service provider company.



Note – While we have made all efforts and taken utmost care in gathering precise information about the products, features, benefits, etc. However, BFL cannot be held liable for any direct or indirect damage/loss. We request our customers to conduct their research about these products and refer to the respective product’s sales brochures before concluding their sale.

Show All Text