When are palpitations serious?

Most people experience heart palpitations at some point in their lives. They are the feeling that the heart is racing, pounding or fluttering, and can last from a few seconds to several minutes. In many cases, palpitations are harmless and related to stress, caffeine or anxiety. However, in some people, they can signal an underlying heart rhythm problem or another medical condition that requires investigation. Understanding when to seek medical advice is key to protecting heart health.

What are palpitations?

Palpitations occur when you become aware of your heartbeat feeling unusual. They may feel like skipped beats, a fluttering sensation or a rapid, pounding rhythm in the chest, throat or neck. Although usually harmless, frequent or prolonged palpitations can be distressing and occasionally point to an abnormal heart rhythm known as an arrhythmia.

Common triggers include:

Emotional stress or anxiety
Excess caffeine, nicotine or alcohol
Dehydration or low blood sugar
Hormonal changes, such as during pregnancy or menopause
Certain medications, including asthma inhalers or decongestants
Vigorous exercise

In most people, palpitations linked to these causes resolve once the trigger is removed.

When can palpitations indicate a more serious condition?

While occasional palpitations are usually benign, those associated with other symptoms may suggest a cardiac issue such as an arrhythmia or structural heart disease. Warning signs that warrant medical assessment include:

Dizziness or light-headedness
Shortness of breath
Chest pain or pressure
Fainting or near-fainting episodes
Palpitations that occur during exercise or at rest without a clear cause

Conditions such as atrial fibrillation (AF), supraventricular tachycardia (SVT) or ventricular tachycardia can cause sustained or irregular heartbeats that affect how efficiently the heart pumps blood. If left untreated, these may increase the risk of stroke or heart failure.

How are palpitations diagnosed?

A cardiologist will begin by taking a detailed history and examining possible triggers or medical conditions. Diagnostic tests may include:

Electrocardiogram (ECG): records the heart’s electrical activity to detect rhythm abnormalities.
Holter or event monitor: portable ECG worn over 24 hours or longer to capture irregular episodes.
Echocardiogram: ultrasound scan assessing the heart’s structure and function.
Blood tests: to check for thyroid imbalance, anaemia or electrolyte abnormalities.

Identifying the underlying cause is crucial for deciding whether treatment is needed.

What are the treatment options?

Treatment depends on the diagnosis and severity of symptoms. Management may include:

Lifestyle adjustments, such as reducing caffeine and alcohol, staying hydrated and managing stress.
Medication, including beta-blockers or anti-arrhythmic drugs to control heart rate.
Catheter ablation, a minimally invasive procedure that targets and corrects the faulty electrical signals causing abnormal rhythms.
Implantable devices, such as pacemakers or defibrillators, for those with significant rhythm disturbances.

Protecting your heart health

Most palpitations are not dangerous, but persistent or severe episodes should never be ignored. Early assessment by a cardiologist can identify potentially serious heart conditions and provide reassurance when the cause is benign. Paying attention to your symptoms and seeking timely medical advice ensures that any underlying issue is managed effectively, supporting a healthy and steady heartbeat for the future.