Ectopic heartbeats

What is an ectopic heartbeat? 

An ectopic heartbeat is a beat that starts somewhere other than the heart’s natural pacemaker, known as the sinoatrial (SA) node.  In a normal heartbeat, an electrical impulse travels from the SA node, through the upper chambers of the heart (the atria), and down into the lower chambers (the ventricles), causing a coordinated, rhythmic contraction.

With an ectopic beat, an impulse starts early from somewhere else in the heart, before the next normal beat is due. This causes the heart to beat slightly earlier than expected, out of its normal sequence, followed by a brief pause while the normal rhythm resets.

This pause and the beat that follows it can cause the feeling of a skipped heartbeat, a thud, or a flutter. This can be unsettling, particularly the first time it occurs.

Ectopic heartbeats are very common. The majority cause no harm and do not require treatment, but they do need a proper medical assessment to understand what is driving them and whether they are caused by an underlying condition that may need medical attention.

Types of ectopic heartbeats 

Ectopic beats are named according to where in the heart they originate. There are two main types: Ventricular ectopics and supraventricular ectopics (SVEs).

Ventricular ectopics  

Ventricular ectopics (VEs), also called premature ventricular contractions (PVCs), are very common. They originate in the heart’s lower chambers, known as the ventricles. This electrical impulse travels through the ventricles in an abnormal direction, resulting in a less coordinated heartbeat than usual.

Ventricular ectopics are often harmless in the context of a structurally normal heart, but when they are very frequent or associated with an underlying heart condition, they may require closer attention.

Supraventricular ectopics  

Supraventricular ectopics (SVEs), also known as premature atrial contractions (PACs), originate in the upper chambers of the heart (the atria) or in the tissue between the atria and ventricles. They are also very common and are usually benign. They can feel similar to ventricular ectopics but are typically less symptomatic. In a small number of cases, frequent SVEs can be associated with a higher risk of atrial fibrillation.

Symptoms  

Many people with ectopic heartbeats have no symptoms at all and the extra beats are found on an ECG during a routine assessment. For others, the sensations can feel concerning, even when the ectopic beats are benign.

Common symptoms can include:

• A skipped beat that can feel like a brief pause followed by a more forceful beat
• A thud in the chest, as the beat that follows the ectopic pause, can feel stronger
• A fluttering sensation in the chest or throat
• An awareness of an irregular or erratic pulse
• Brief dizziness or light-headedness
• Fatigue, particularly when ectopics are frequent
• Shortness of breath

Symptoms are often more noticeable at rest, particularly in the evenings or at night when the heart rate naturally slows. Many people find their symptoms disappear when they exercise and return when they stop.

The sensations can feel worse with alcohol, caffeine, fatigue, stress or poor sleep. These lifestyle factors are also relevant to your broader cardiovascular health and are addressed directly as part of our integrative cardiology approach.

If you experience ectopic beats accompanied by sudden chest pain, shortness of breath, fainting, loss of consciousness, or a very fast or irregular heartbeat that does not settle, call 999 immediately for emergency medical attention.

Causes  

Ectopic heartbeats can occur in a completely healthy heart with no identifiable cause. They can also be triggered or worsened by a range of factors, many of which are within your control.

Common triggers can include caffeine, alcohol, fatigue, poor sleep, stress, strenuous exercise, certain medications and supplements such as nasal decongestants, electrolyte imbalances, viral infections, hormonal changes, thyroid disorders or smoking nicotine.

In a minority of patients, ectopic beats may be associated with an underlying structural or electrical heart condition. This is why a proper assessment, including cardiac imaging, is important even when ectopic beats are suspected to be benign. Potential cardiac causes can include:

• Structural heart disease including heart failure or cardiomyopathy
• High blood pressure, which over time can cause changes to the heart muscle and lead to arrhythmia
• Scarring from a previous heart attack, which can create new focus points for ectopic electrical activity
• Myocarditis, which is inflammation of the heart muscle
• High ectopic burden when ectopics make up more than 10-15% of all heartbeats, which may affect cardiac function over time

The key distinction is identifying ectopics in a structurally normal heart and those associated with underlying heart disease. This can be established with a thorough medical history, examination, investigations and diagnosis.

Diagnosis  

Diagnosing ectopic heartbeats and understanding their significance requires a careful clinical assessment with targeted investigations. This will help determine what is causing them, how frequent they are, and whether there is an underlying condition that may require treatment.

During your initial appointment, we will take a detailed medical history to assess your symptoms, triggers, lifestyle and family history. This may also involve a physical examination to get a better understanding of your heart health.

Some initial tests we may perform can include a resting electrocardiogram (ECG) to record the heart’s electrical activity and an echocardiogram to assess the structure and function of the heart.

We may also recommend an ambulatory ECG monitor to be worn at home for 24 hours or longer to capture your heart’s activity during daily tasks. This allows us to identify how many ectopic beats you have, their patterns and any other arrhythmias.

You may need blood tests, such as thyroid function, electrolytes (potassium and magnesium), and inflammatory markers, to help identify any underlying cause.

In selected patients, an exercise ECG can provide important additional information about how the heart rhythm changes under exertion.

We may suggest further investigations depending on your individual situation, symptoms and history. At Cardiologist London, we are here to support you through every step of your journey.

Treatment  

For many patients, an important part of managing ectopic beats is knowing what to expect.

We will discuss the treatment options with you based on your personal circumstances, condition and needs. This may include lifestyle changes, monitoring and, occasionally, medication.

Reassurance and monitoring   

If your investigations confirm a structurally normal heart and a low ectopic burden, you may not require treatment. Knowing that the sensations you are experiencing are not dangerous and understanding their cause can help reduce your anxiety and concern. We will explain your results in full detail and discuss a clear plan with you for any follow-up or monitoring that may be needed.

Lifestyle modification 

Addressing lifestyle factors is a key part of managing ectopic heartbeats. Many patients experience a meaningful reduction in the frequency and severity once they address their triggers. This may include:

• Reducing or eliminating caffeine: This is one of the most common and impactful changes for patients with lifestyle-triggered ectopics.
• Reducing alcohol: This can significantly lower ectopic beat frequency.
• Improving sleep: Addressing sleep disruption can reduce sympathetic nervous system activity and support cardiovascular health.
• Managing stress: Evidence-based approaches such as mindfulness, structured movement and psychological support can help you manage your stress levels.
• Regular exercise: This can help reduce ectopic frequency over time.
• Maintaining a healthy, well-balanced diet: This can support electrolyte optimisation and cardiac electrical stability.

At Cardiologist London, our personalised integrative cardiology approach can help you make meaningful changes to your lifestyle to improve your condition and your overall cardiovascular health.

Medication 

When lifestyle changes alone are not enough, we may recommend medication. This can include:

• Beta-blockers to help improve symptoms and control the area of the heart sending out the extra heartbeats.
• Calcium channel blockers, if beta-blockers are not tolerated well.
• Anti-arrhythmic medication for a small number of patients with very frequent or distressing ectopics that have not responded to other treatments.

Catheter ablation  

For a few patients, typically those with a high ventricular ectopic burden that is affecting their heart function or those with very frequent ectopics that are unresponsive to treatment, catheter ablation may be considered. This minimally invasive procedure targets and eliminates the specific focus in the heart that is causing the extra beats.

Ectopic beats and excercise  

The relationship between ectopic heartbeats and excerise is a common uncertainty for patients, particularly for athletes and those who exercise regularly.

For most patients, moderate aerobic exercise can be both safe and beneficial. Regular exercise can reduce the sympathetic nervous system activity, improve sleep quality, reduce stress and may reduce ectopic frequency over time.

There is a specific subgroup of patients, however, who have exercise-induced ectopics. This is a pattern where ectopic beats become more frequent or symptomatic during physical activity. This is different from ectopics that are reduced by exercise and may require targeted assessments, including an exercise ECG.

For athletes with frequent ectopics, questions around returning to sport and competitive exercise are taken seriously and addressed with objective investigations. At Cardiologist London, our aim is to reach a clear, evidence-based, individualised plan about what is safe and appropriate for you and your needs.

Our integrative cardiology approach  

Understanding ectopic heartbeats, the triggers and what to expect can make a significant difference to your experience.

At Cardiologist London, we take the time to understand your cardiovascular health holistically and we look beyond the electrical findings to address the lifestyle factors that may be driving your condition. Addressing these factors properly will not only help reduce your ectopic burden, but it will also optimise your heart health for the future.