A flutter, skipped beat or sudden racing heartbeat can be unsettling. Palpitations are common and can have many explanations, but the feeling alone cannot confirm whether your heart rhythm is harmless or needs investigation. If you are considering a cardiologist in London for heart palpitations, the most useful question is not simply how often they happen. Their pattern, your medical history and any symptoms that come with them all matter. If you decide to seek specialist advice, read what to expect at a cardiology consultation.
This guide explains when to seek emergency help, when to arrange a medical assessment and what a cardiology consultation may involve. It is general information, not a diagnosis; a clinician can advise you based on your individual circumstances. Your cardiologist can advise on choosing the right cardiology test based on your symptoms and medical history.
What are heart palpitations?
Palpitations are sensations that make you unusually aware of your heartbeat. You might describe your heart as racing, pounding, fluttering, skipping a beat or beating irregularly. They may last a few seconds or continue for longer, and can occur at rest, during activity or after a trigger such as stress or caffeine. Learn more about ECG and echocardiogram checks and how they can contribute to a heart health assessment.
Sometimes the sensation reflects a change in heart rhythm, called an arrhythmia. At other times, a person may feel a normal heartbeat more strongly. Possible influences include emotional stress, lack of sleep, some medicines, caffeine, alcohol, smoking, fever or dehydration. Health conditions such as an overactive thyroid or anaemia can also be relevant. These are possibilities, not a way to diagnose the cause at home. If you are considering private care, our guide explains what to consider when choosing a private cardiologist in London.
When are palpitations an emergency?
Call 999 or go to A&E if palpitations are happening with chest pain or tightness, severe shortness of breath, fainting, collapse or feeling as though you may faint. Do not drive yourself if you feel seriously unwell. These symptoms need urgent assessment, whether or not you have previously been diagnosed with a heart condition.
If the palpitations have stopped but you experienced a concerning episode, seek prompt medical advice. In the UK, NHS 111 can help direct you to an appropriate service when you need urgent advice but it is not an immediate emergency. If symptoms return or become severe, call 999.
When should you book a cardiology assessment?
Consider speaking to a GP or cardiologist if palpitations keep returning, are becoming more frequent, last longer than usual or are affecting your sleep, activity or confidence. An assessment is also sensible if they begin during exercise, feel markedly different from your usual heartbeat, or occur alongside dizziness, unusual breathlessness or weakness—even if these symptoms are not severe enough to feel like an emergency.
Specialist advice may be particularly helpful if you have known heart disease, high blood pressure, a previous heart procedure, or a family history of significant heart problems or sudden cardiac death at a young age. These details do not automatically mean your palpitations are dangerous, but they can affect which checks are appropriate.
There is no single number of episodes that means everyone needs a cardiologist. A brief isolated flutter in someone who otherwise feels well is different from repeated episodes with dizziness or palpitations brought on by exertion. If you are unsure, start with a healthcare professional rather than trying to interpret the sensation on your own.
What to note before your appointment
A short symptom record can help a clinician understand what is happening, especially if the episode is not present during the consultation. If you can do so safely, note:
- When an episode starts, how long it lasts and how often it occurs.
- Whether the heartbeat feels fast, irregular, pounding or like a missed beat.
- What you were doing at the time, including exercise, rest or a stressful situation.
- Any associated symptoms, such as chest discomfort, breathlessness, dizziness or fainting.
- Relevant medicines, supplements, caffeine, alcohol or other possible triggers.
A smartwatch or phone may record heart-rate information, but a reading is not a diagnosis and a device can miss rhythm problems. Save a recording if you already have one, but do not delay urgent care to collect more data. Do not stop prescribed medicines or make major changes to your routine without medical advice.
What happens at a cardiology appointment?
A cardiologist will usually ask about the symptoms, your health and family history, medicines and possible triggers. They may check your pulse and blood pressure and review any previous test results. The choice of investigation depends on your history and examination; not everyone needs every test.
Common heart investigations
- Electrocardiogram (ECG): records the heart’s electrical activity during a short period. It can identify some rhythm or conduction abnormalities, but an intermittent episode may not happen while the ECG is being recorded.
- Ambulatory ECG monitoring: a portable monitor records heart rhythm over a longer period. Depending on the symptoms, the clinician may recommend a Holter monitor or another event-monitoring approach.
- Echocardiogram: an ultrasound scan that assesses the heart’s structure and pumping function when there is a reason to check these.
- Blood tests: may be used to look for relevant factors such as anaemia or thyroid problems, based on the clinical assessment.
The aim is to connect what you feel with any findings and decide whether reassurance, follow-up, further testing or treatment is appropriate. Treatment depends on the cause. Some people need no specific heart treatment; others may benefit from managing an underlying condition or receiving care for a diagnosed rhythm problem.
Choosing a cardiologist in London
When looking for a cardiologist in London for heart palpitations, check that the consultation is appropriate for your symptoms and that you understand how investigations and follow-up are arranged. It can be useful to bring a list of medicines, previous test results and your symptom notes. Ask how you will receive results and what to do if symptoms change while you are waiting.
Dr. Chabok provides cardiology consultations, diagnosis and treatment, including heart investigations and interventional procedures such as angioplasty and stenting. The practice lists clinics in London and Harefield. The right appointment depends on your symptoms and needs; a consultation is not a substitute for emergency care when warning signs are present.
A practical way to decide what to do
- Emergency symptoms now: call 999 for palpitations with chest pain, severe breathlessness, fainting, collapse or near-fainting.
- Urgent but not an emergency: contact NHS 111 or a healthcare professional for advice if symptoms have stopped but concern you, or are worsening.
- Recurring or disruptive symptoms: arrange a GP or cardiology assessment, particularly if you have heart disease or relevant risk factors.
- Prepare for assessment: record the pattern and associated symptoms, and bring your medicine list and any relevant results.
Palpitations deserve attention when they are new, persistent, recurrent or accompanied by other symptoms. A careful assessment can help distinguish a temporary sensation from a rhythm problem or another health issue, and guide the next steps without assuming the worst.
Frequently Asked Questions
Should I see a cardiologist for occasional palpitations?
Not every occasional palpitation needs specialist care. Seek advice if episodes recur, change, worry you or affect daily life. Get urgent help if they occur with chest pain, severe breathlessness, fainting or collapse.
Can an ECG detect palpitations that come and go?
An ECG records heart activity during the test, so it may not capture an intermittent episode. A clinician may suggest longer ambulatory monitoring if the symptoms and assessment make it appropriate.
Are palpitations during exercise more concerning?
Palpitations that occur during exercise should be discussed with a healthcare professional, particularly if they are new or come with dizziness, chest discomfort or unusual breathlessness. Stop exercising and seek urgent help for severe or emergency symptoms.
What should I bring to a private cardiology consultation?
Bring a list of medicines and supplements, relevant medical records or test results, and notes about when episodes happen and how they feel. If you have a device recording, you can share it, but it does not replace clinical assessment.
Can stress cause heart palpitations?
Stress can be one possible trigger, but it is not possible to confirm the cause from the sensation alone. Recurrent or concerning symptoms should be assessed rather than automatically attributed to stress.
Should I wait for a private appointment if I have chest pain with palpitations?
No. Palpitations with chest pain, severe breathlessness, fainting or collapse need emergency assessment. Call 999 rather than waiting for a routine or private appointment.
Frequently Asked Questions
Should I see a cardiologist for occasional palpitations?
Not every occasional palpitation needs specialist care. Seek advice if episodes recur, change, worry you or affect daily life. Get urgent help if they occur with chest pain, severe breathlessness, fainting or collapse.
Can an ECG detect palpitations that come and go?
An ECG records heart activity during the test, so it may not capture an intermittent episode. A clinician may suggest longer ambulatory monitoring if the symptoms and assessment make it appropriate.
Are palpitations during exercise more concerning?
Palpitations that occur during exercise should be discussed with a healthcare professional, particularly if they are new or come with dizziness, chest discomfort or unusual breathlessness. Stop exercising and seek urgent help for severe or emergency symptoms.
What should I bring to a private cardiology consultation?
Bring a list of medicines and supplements, relevant medical records or test results, and notes about when episodes happen and how they feel. A device recording can be useful to share, but it does not replace clinical assessment.
Can stress cause heart palpitations?
Stress can be one possible trigger, but it is not possible to confirm the cause from the sensation alone. Recurrent or concerning symptoms should be assessed rather than automatically attributed to stress.
Should I wait for a private appointment if I have chest pain with palpitations?
No. Palpitations with chest pain, severe breathlessness, fainting or collapse need emergency assessment. Call 999 rather than waiting for a routine or private appointment.