Heart Arrhythmia Treatment in Singapore

Dr Eric Hong
Dr Eric Hong
Senior Consultant Cardiologist & Internal Medicine Physician
MB BCh (Ireland), MRCP (United Kingdom), FAMS (Cardiology), DIP (CBNC, USA), FSCAI (SCAI, USA), FACC (ACC, USA), FESC (European Society of Cardiology, France), FRCP (Edinburgh, United Kingdom)

Heart Arrhythmia

Arrhythmia refers to an irregular heartbeat that may feel too fast, too slow, or uneven. It can occur when the heart's electrical signals do not work as they should. Some arrhythmias may not cause symptoms, while others may be linked to palpitations, chest discomfort, breathlessness, dizziness, fainting, stroke risk, or heart failure.

If symptoms are persistent, recurring, or associated with chest pain, shortness of breath or fainting, medical assessment may be recommended. Understanding the causes of this condition, as well as the possible treatment approaches, can help you make better decisions regarding your cardiac health.

A woman is supporting a man who is experiencing arrhythmia while he is holding his chest
The doctor is explaining the patient’s heart rate to them due to arrhythmia

What Is Arrhythmia?

The heart normally beats in a regular rhythm under the control of electrical impulses that travel through specialised pathways in the heart. These signals coordinate the heart muscle so it pumps blood efficiently throughout the body. When these electrical impulses are delayed, blocked or generated abnormally, the heart may beat too quickly (tachycardia), too slowly (bradycardia) or irregularly. This abnormal heart rhythm is known as arrhythmia.

The severity of arrhythmia can range from mild to life-threatening. Some arrhythmias may not cause any noticeable symptoms and may not require treatment. However, others can significantly impact the heart's ability to pump blood, potentially leading to serious complications.

What Are the Different Types of Arrhythmia?

Arrhythmia may be classified into different types based on whether they cause slow, fast, or irregular heart rate or the heart's affected part.

  • Tachycardia – This refers to a fast heartbeat, with a heart rate faster than 100 beats per minute.
  • Bradycardia – This is a slow heartbeat where the resting heart rate is slower than 60 beats per minute.
  • Premature Heartbeat – Sometimes referred to as extra heartbeat, this occurs when the signal to beat comes too early, causing a pause followed by a stronger beat as the heart returns to its regular rhythm.
  • Supraventricular Arrhythmias – These arrhythmias arise in the upper chambers of the heart, called the atria. This can manifest in several forms:
    • Atrial Fibrillation – This is the most common type. Here, the atria quiver irregularly instead of contracting effectively. This can lead to a rapid and irregular heart rate.
    • Atrial Flutter – A similar condition to atrial fibrillation, atrial flutter involves rapid, but more organised, electrical impulses in the atria. It can sometimes progress to atrial fibrillation.
    • Supraventricular Tachycardia – This is characterised by a very fast heart rate originating above the ventricles. SVT episodes can come and go suddenly.
  • Ventricular Arrhythmias – These arrhythmias take root in the heart's lower chambers, the ventricles. Common types include:
    • Ventricular Tachycardia – This involves a rapid heartbeat originating in the ventricles. Ventricular tachycardia does not always cause problems, especially for those with healthy hearts. However, it may last longer for individuals with heart problems, leading to ventricular fibrillation.
    • Ventricular Fibrillation – This is a chaotic electrical activity in the ventricles, causing the ventricles to quiver instead of pumping blood effectively. This is a medical emergency, as it can rapidly lead to cardiac arrest.

Common Symptoms of Arrhythmia

Some people with arrhythmias may experience no symptoms at all, while others may have noticeable or even debilitating ones. Common symptoms include:

  • Palpitations – This is often described as a fluttering, pounding, or racing heartbeat
  • Shortness of Breath – Difficulty breathing, especially with exertion
  • Chest Pain or Tightness – This can range from mild to severe discomfort
  • Dizziness or Lightheadedness – Feeling faint or unsteady
  • Fatigue – Unusual tiredness
  • Fainting or Near-Fainting Episodes – Loss of consciousness
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Arrhythmias should be evaluated and promptly treated.
If you regularly experience the symptoms above, contact us at 6736 1068 for a detailed heart evaluation.

Causes of Arrhythmia

The heart's rhythm is governed by electrical signals originating in a specialised group of cells called the sinus node. These signals travel through the heart, triggering contractions in specific chambers at precise intervals. This coordinated activity ensures efficient blood flow throughout the body.

However, some conditions and other factors may affect this process, causing irregularities in the heart rate. These include:

  • Coronary Artery Disease (CAD) – Blockages in the heart's arteries can weaken the heart muscle, leading to irregular rhythms.
  • Heart Failure – Weakened heart muscles struggle to pump blood efficiently, often resulting in arrhythmias.
  • Heart Valve Diseases – Problems with the heart's valves can disrupt the normal flow of blood, contributing to arrhythmias.
  • Congenital Heart Defects – Birth defects affecting the heart's structure can also impact its electrical system.
  • Electrolyte Imbalances – Low levels of potassium, magnesium, or calcium can disrupt the heart's electrical signals.
  • Medications – Some medications can have side effects that affect heart rhythm.

Risk Factors for Arrhythmia

Several factors can influence the development of arrhythmias:

  • Age – The risk of arrhythmias increases with age.
  • Lifestyle factors: Smoking, excessive alcohol consumption and lack of exercise can contribute to heart health issues, including arrhythmias.
  • Medical Conditions – Some conditions, like high blood pressure, sleep apnoea, obesity, diabetes, thyroid disorders and low blood sugar can trigger arrhythmias.
  • Stress and Anxiety – Emotional stress can trigger arrhythmia episodes in some individuals.

How Is Arrhythmia Diagnosed?

Arrhythmia diagnosis may involve a medical history review, physical examination and ECG. Depending on the symptoms, we may recommend extended rhythm monitoring or imaging to assess your heart’s structure and function. Common diagnostic tests include:

Electrocardiogram (ECG or EKG)
  • This is the most common and initial test for arrhythmias. An ECG records the electrical activity of the heart and detects many types of arrhythmias.
Echocardiogram
  • An echocardiogram uses sound waves to create images of the heart. It can also help identify underlying heart conditions that may be causing the arrhythmia.
Electrophysiological Study (EPS)
  • An EPS involves inserting thin, flexible tubes (catheters) with electrodes through blood vessels into the heart. These catheters can stimulate the heart to induce arrhythmias and study their electrical patterns to determine the best treatment option.
Blood Tests
  • Blood tests can provide important information about overall heart health. They can help identify electrolyte imbalances, thyroid problems, or other conditions that might contribute to arrhythmias.

Arrhythmia Treatment Options in Singapore

The most appropriate treatment for arrhythmia depends on the type of abnormal heart rhythm, the severity of symptoms, any underlying heart conditions, stroke risk and your overall health. Your cardiologist will recommend a personalised treatment plan based on these factors.

Medications

Medications may be prescribed to control the heart's rhythm or slow the heart rate. Depending on the type of arrhythmia, your cardiologist may also recommend anticoagulants (blood thinners) to reduce the risk of stroke.

Cardioversion

Cardioversion is a procedure performed under anaesthesia that delivers a controlled electrical shock to restore a normal heart rhythm. It is commonly used to treat atrial fibrillation and atrial flutter.

Catheter Ablation

Catheter ablation is a minimally invasive procedure that uses heat, cold or radiofrequency energy to destroy the small area of heart tissue responsible for the abnormal electrical signals causing the arrhythmia.

Pacemaker

A pacemaker is a small battery-powered device implanted beneath the skin of the chest to regulate slow or abnormal heart rhythms. It delivers electrical impulses to help maintain a normal heart rate.

Implantable Cardioverter Defibrillator (ICD)

An implantable cardioverter defibrillator (ICD) is used to monitor the heart rhythm in patients at risk of life-threatening arrhythmias. If a dangerous rhythm is detected, the device delivers an electrical shock to restore a normal heartbeat.

Coronary Artery Bypass Surgery (CABG)

If arrhythmia is associated with severe coronary artery disease, coronary artery bypass surgery (CABG) may be recommended to improve blood flow to the heart. Treating the underlying heart disease may help reduce certain arrhythmia-related complications.

Coronary Angioplasty

For some patients with narrowed or blocked coronary arteries, coronary angioplasty may be performed to restore blood flow to the heart. This procedure treats the underlying coronary artery disease rather than the arrhythmia itself, but it may form part of an overall treatment plan where both conditions are present.

What is Recovery Like After Arrhythmia Treatment?

Recovery after arrhythmia treatment depends on the type of treatment received and the underlying heart condition. Many patients can resume their normal daily activities within a few days after minimally invasive procedures, while others may require a longer recovery period following device implantation or surgery.

Your cardiologist will provide personalised advice on returning to work, exercise and other activities. Regular follow-up appointments may also be recommended to monitor your heart rhythm, assess treatment effectiveness and adjust medications or implanted devices where necessary.

Potential Complications of Untreated Arrhythmia

Some arrhythmias are harmless and may not require treatment. However, persistent or untreated arrhythmias can reduce the heart's ability to pump blood effectively, increasing the risk of serious complications over time. These may include:

Stroke

Certain arrhythmias, particularly atrial fibrillation, can cause blood to pool inside the heart and form clots. If a clot travels to the brain, it can block blood flow and cause a stroke.

Heart Failure

A prolonged fast or irregular heart rhythm can weaken the heart muscle over time, reducing its ability to pump blood efficiently and potentially leading to heart failure.

Cardiomyopathy

Some untreated arrhythmias can place persistent strain on the heart, causing the heart muscle to enlarge, weaken or become less effective at pumping blood.

Cardiac Arrest

Certain life-threatening arrhythmias, such as ventricular fibrillation, can cause the heart to stop pumping blood suddenly. Cardiac arrest is a medical emergency requiring immediate treatment to improve the chances of survival.

How to Prevent Arrhythmia

Adopting a heart-healthy lifestyle is helpful in managing or lowering the risk of arrhythmias.

  • Diet and Exercise – A balanced diet with fruits, vegetables, whole grains, and lean proteins supports heart health. Additionally, foods rich in omega-3 fatty acids can also lower blood pressure and reduce inflammation. Regular physical activity helps control weight, strengthens the heart, and improves overall cardiovascular function.
  • Stress Management – Chronic stress can contribute to heart problems. Incorporate relaxation techniques like meditation, yoga, or deep breathing into your routine.
  • Limiting Stimulants – Excessive caffeine and alcohol consumption can affect heart rhythm.
  • Practise Good Sleep Habits – Adequate sleep is vital for overall health, including heart health. Aim for 7-9 hours of quality sleep each night.

Visiting a Heart Specialist for Arrhythmia Treatment

Occasional changes in your heartbeat may not always indicate a serious condition. However, persistent, recurring or worsening symptoms should be assessed by a cardiologist, particularly if they are accompanied by chest pain, shortness of breath, dizziness or fainting.

You should also seek medical evaluation if you have underlying cardiovascular risk factors, such as coronary artery disease, heart failure, high blood pressure, diabetes or a family history of heart disease, as these may increase your risk of clinically significant arrhythmias.

At EH Heart Specialist, Senior Consultant Cardiologist & Internal Medicine Physician Dr Eric Hong provides comprehensive cardiac assessment, advanced diagnostic testing and personalised treatment plans to identify the underlying cause of your arrhythmia and recommend the most appropriate management.

phone icon
Call Us At
6736 1068
whatsapp icon
Whatsapp Us At
9736 1062
Prompt assessment and appropriate management of arrhythmias may help reduce the risk of complications.
For a personalised consultation with our cardiologist, please contact us at 6736 1068 today.

Frequently Asked Questions (FAQs) About Arrhythmia

It depends on the type of arrhythmia and its underlying cause. Some arrhythmias are harmless and may not require treatment, while others can increase the risk of complications such as stroke, heart failure or cardiac arrest. A cardiologist can determine whether your arrhythmia requires monitoring or treatment.

Some arrhythmias are temporary and may resolve once the underlying trigger, such as stress, dehydration or certain medications, is addressed. However, persistent or recurring arrhythmias should be evaluated by a cardiologist to identify the underlying cause and determine whether treatment is needed.

Yes. Although treatment can effectively control or eliminate many arrhythmias, they may recur over time depending on the underlying heart condition, lifestyle factors and the type of arrhythmia. Regular follow-up appointments help monitor your heart rhythm and guide any necessary adjustments to your treatment plan.

Stress and anxiety can trigger temporary changes in heart rhythm, including palpitations or a racing heartbeat, particularly in susceptible individuals. While these episodes are often harmless, recurring or persistent symptoms should be assessed to rule out an underlying heart rhythm disorder.

Many people with arrhythmia can continue to exercise safely, but the type and intensity of activity should be based on the underlying condition and your cardiologist's advice. If you experience chest pain, dizziness, fainting or worsening palpitations during exercise, stop immediately and seek medical attention.

Dr Eric Hong
Meet Our Heart Arrhythmia Specialist in Singapore
Dr Eric Hong
Senior Consultant Cardiologist & Internal Medicine Physician
MB BCh (Ireland), MRCP (United Kingdom), FAMS (Cardiology), DIP (CBNC, USA), FSCAI (SCAI, USA), FACC (ACC, USA), FESC (European Society of Cardiology, France), FRCP (Edinburgh, United Kingdom)
Dr Eric Hong Cho Tek is a Singapore-based cardiologist with extensive training in both interventional and imaging-based cardiac care. He completed two ACGME (Accreditation Council for Graduate Medical Education, USA) Clinical Fellowships in Interventional Cardiology and Non-Invasive Cardiac Imaging. His clinical expertise covers cardiac CT angiography, PET/SPECT imaging, and nuclear cardiology, enabling him to offer well-rounded assessments and treatment options. Dr Hong's areas of interest include interventional cardiology (femoral and radial access), sports cardiology, cardiac rehabilitation, and advanced cardiac imaging.
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For a detailed heart assessment and personalised treatment, please make an appointment with Dr Eric Hong today. We warmly welcome you.

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