Heart Palpitations vs Atrial Fibrillation: Are They the Same?

Heart palpitations are the sensation of your heartbeat becoming more noticeable. You might feel a fluttering in your chest, a racing pulse, or the feeling that your heart has skipped or added an extra beat. They can occur at rest or during activity, and while they can feel alarming, they are often triggered by everyday factors.

Common causes include stress, anxiety, caffeine, alcohol, nicotine, strenuous exercise, hormonal changes (such as during pregnancy or menopause), and certain medications. In many cases, palpitations are benign and not linked to any underlying heart condition. However, if they occur frequently, last a long time, or are accompanied by other symptoms, it’s important to get them checked.

Atrial fibrillation (AF) is a specific type of heart rhythm disorder (arrhythmia). Instead of beating in a regular, coordinated way, the upper chambers of the heart (the atria) beat rapidly and irregularly. This can cause the heart to pump less efficiently, and may lead to blood pooling in the heart, increasing the risk of clot formation and stroke.

AF may come and go (paroxysmal) or be persistent. Some people with AF experience palpitations, breathlessness, tiredness, or dizziness, but others have no symptoms at all—this is known as silent AF. Risk factors include advancing age, high blood pressure, heart valve disease, obesity, and excessive alcohol intake. It is one of the most common arrhythmias, and while not always an emergency, it requires proper medical assessment and management to reduce stroke risk.

It is helpful to think of palpitations as a symptom, while atrial fibrillation is a specific diagnosis. Palpitations can occur for many reasons and do not necessarily mean you have AF. In contrast, AF is a medical condition that may or may not produce palpitations.

Duration and pattern also differ. Ordinary palpitations are often brief and sporadic, whereas AF may last for hours or longer, and the irregular rhythm is typically persistent when present. Additionally, AF carries a well-recognised risk of stroke, which is not a concern with occasional, benign palpitations. A cardiologist can distinguish between them using tests such as an electrocardiogram (ECG) or ambulatory heart monitoring.

If you experience palpitations that are frequent, prolonged, or accompanied by chest pain, severe breathlessness, fainting, or a feeling of being very unwell, seek urgent medical attention by calling 999 or visiting A&E. For less urgent but persistent or troublesome symptoms, a consultation with a specialist can provide reassurance and a clear diagnosis.

Dr Sujata Khambekar and the team at The Cardiology Clinic in Poole welcome patients from Bournemouth and throughout Dorset. During your appointment, Dr Khambekar will take a detailed history, perform an examination, and may recommend investigations such as a resting ECG, a 24-hour Holter monitor, or an echocardiogram. This helps determine whether your palpitations are benign or due to an arrhythmia like AF.

Please remember this article is for general information only and does not replace individual medical advice. If you are concerned about your heart health, book a consultation or speak to your GP.

The information in this article is based on guidance from authoritative UK bodies including the National Institute for Health and Care Excellence (NICE), the British Heart Foundation (BHF), the NHS, and the European Society of Cardiology (ESC). These organisations provide robust, evidence-based resources for understanding heart rhythm conditions.