A sudden awareness of your heartbeat can be unsettling, whether it feels like a flutter, a thump, a skipped beat or a rapid pulse. This guide to managing heart palpitations explains what you can do in the moment, which patterns warrant medical review, and why a clear diagnosis matters more than simply trying to ignore the symptom.
Palpitations are common and are often harmless. They can occur in healthy hearts, particularly during stress, after poor sleep or following stimulants. However, the same sensation can occasionally reflect an abnormal heart rhythm or an underlying cardiac condition. The practical question is not only how to settle the feeling, but when it is sensible to seek specialist assessment.
What heart palpitations can feel like
People describe palpitations in different ways. You may notice a racing heartbeat, fluttering in the chest, a forceful beat, a brief pause followed by a heavy thud, or an irregular rhythm. The sensation may be felt in the chest, throat or neck, and it may last seconds, minutes or longer.
A short-lived isolated skipped beat is often caused by an extra heartbeat. These are common and may become more noticeable when you are tired, anxious or lying quietly in bed. Repeated episodes, a persistently fast pulse, or a rhythm that feels irregular should not be assumed to be benign without considering the wider clinical picture.
The timing of symptoms is useful. Palpitations that occur after coffee, alcohol or a difficult night’s sleep may have an identifiable trigger. Symptoms appearing during exertion, occurring without an obvious cause, or waking you from sleep deserve more careful attention, particularly if they are new or changing.
When palpitations need urgent help
Call 999 or attend A&E immediately if palpitations occur with chest pain or pressure, severe breathlessness, fainting, near-fainting, collapse, confusion, or symptoms of a stroke such as facial weakness, arm weakness or difficulty speaking. Urgent assessment is also appropriate if a very rapid heartbeat does not settle, especially when you feel unwell.
Do not drive yourself to hospital if you are dizzy, faint or experiencing chest pain. These symptoms may have causes unrelated to the heart, but they require prompt assessment rather than self-management at home.
If palpitations are recurrent but you are otherwise well, arrange a GP or cardiology review. This is particularly relevant if you have known heart disease, high blood pressure, diabetes, thyroid disease, sleep apnoea, a family history of sudden cardiac death, or a close relative diagnosed with an inherited rhythm condition.
What to do during an episode
If you have no emergency symptoms, stop what you are doing and sit down. Try to note the time, how the sensation began, whether the rhythm feels fast or irregular, and how long it lasts. If you have a smartwatch or home blood-pressure monitor that records pulse, it can be helpful to document the reading, but do not rely on a wearable device to rule out a heart problem.
Slow, steady breathing may help if anxiety is amplifying the sensation. Breathe in gently, then breathe out a little more slowly, without forcing your breath or straining. Avoid repeatedly checking your pulse, as this can increase worry and make a benign sensation feel more prominent.
It is sensible to avoid further caffeine, nicotine, alcohol and recreational drugs for the rest of the day. Drink water if you may be dehydrated, especially after exercise, illness, diarrhoea or alcohol. Dehydration can contribute to a fast heart rate, although it should not be used as an explanation for persistent or concerning symptoms.
Do not attempt internet-recommended manoeuvres, supplements or medication changes without clinical advice. Some manoeuvres can be suitable for particular rhythm disturbances, but they are not appropriate for everyone and should be discussed with a clinician who understands your medical history.
Identifying triggers without missing the bigger picture
Keeping a symptom diary for two to four weeks can make a consultation more productive. Record the date and time, duration, what you were doing, associated symptoms, your intake of caffeine or alcohol, recent sleep, medication changes and, where available, your pulse. A pattern is often more informative than a single episode.
Common contributors include stress, anxiety, fatigue, dehydration, fever, caffeine, alcohol, nicotine and recreational drugs. Hormonal changes, including those around the menopause, can also affect heart-rate awareness. Some prescribed medicines, over-the-counter cold remedies and asthma treatments can increase the likelihood of palpitations.
Reducing a likely trigger is reasonable, but avoid making several major changes at once if you are trying to understand the cause. For example, reducing caffeine gradually may be more realistic than stopping it abruptly, particularly if it causes headaches or affects your work. If symptoms continue despite avoiding obvious triggers, or if you need to restrict normal activities because of them, seek review rather than simply accepting the limitation.
Regular sleep, hydration, balanced meals and moderate physical activity support general cardiovascular health. Exercise is usually beneficial, but palpitations consistently brought on by exercise should be assessed before you push through them. The right approach depends on your symptoms, risk factors and existing heart history.
A guide to managing heart palpitations through assessment
A cardiology assessment aims to establish what your heart rhythm is doing when symptoms occur and whether there is an underlying cause. The first step is usually a detailed discussion of your symptoms, medical history, family history, medicines and lifestyle factors, followed by examination and an ECG.
An ECG records the heart’s electrical activity at one point in time. It can identify some rhythm problems immediately, but a normal ECG does not always exclude an intermittent issue. If episodes come and go, ambulatory monitoring may be more useful. This can involve wearing a monitor for 24 hours, several days or longer, depending on how frequently symptoms occur.
Blood tests may be arranged to look for contributors such as thyroid dysfunction, anaemia or electrolyte disturbance. An echocardiogram may be appropriate when there is concern about the heart’s structure or pumping function. Some patients may also require an exercise test or more specialised investigations.
This process is valuable because treatment depends on the diagnosis. Occasional extra beats in a structurally normal heart may need reassurance and trigger management alone. Other rhythm conditions may benefit from medication, a procedure such as catheter ablation, or treatment of a contributing condition. The aim is to provide proportionate care: neither dismissing a troubling symptom nor treating before the rhythm has been properly identified.
Preparing for a cardiology appointment
Bring a current list of prescribed medicines, over-the-counter products and supplements, including doses. If possible, note when palpitations began, what they feel like, how often they occur and whether there are associated symptoms such as breathlessness, chest discomfort, dizziness or reduced exercise tolerance.
It is also useful to mention any previous ECGs, monitoring results, heart scans or hospital attendance. Family history matters, especially unexplained sudden deaths at a young age, cardiomyopathy, atrial fibrillation or inherited rhythm disorders. This information helps determine which tests are appropriate and how quickly they should be arranged.
For patients seeking prompt consultant-led assessment in North London, Dr Dushyant Maradia’s private cardiology practice can provide specialist review, diagnostic planning and follow-up care. A consultation can help turn an uncertain symptom into a clear, clinically appropriate next step.
Palpitations should not automatically be treated as an emergency, but they should not be repeatedly brushed aside when they are new, recurrent or affecting daily life. Pay attention to the pattern, act promptly if warning symptoms occur, and seek a professional assessment when reassurance needs to be based on evidence rather than guesswork.
