Navigating changes in your heartbeat can be frightening, often causing immediate anxiety about your heart health.
This practical guide clarifies what causes that sudden “skipping” or “fluttering” sensation and outlines exactly when you should seek medical advice.
The Sensation: A palpitation is simply an increased awareness of your own heartbeat. It can feel like your heart is racing, pounding, fluttering, or flipping over in your chest.
Location: While usually felt in the center of the chest, patients frequently report feeling these thuds or pulsations in their throat or neck.
Most Are Benign: Although alarming, the vast majority of isolated palpitations are harmless and are not a sign of a structural heart problem or an impending heart attack.
Skipped Beats: The most common cause of a fluttering sensation is an “ectopic” beat, which can be a Premature Atrial Contraction (PAC) or Premature Ventricular Contraction (PVC).
The Mechanics: An ectopic beat occurs when an early electrical signal fires from a chamber outside the heart’s natural pacemaker (the SA node), causing an early, weaker contraction.
The “Thud”: What feels like a skipped beat is actually the brief, normal pause after the early contraction, followed by a extra-strong, forceful beat as the heart resets its rhythm.
Stimulants: Dietary factors are the leading cause of benign extra beats. Excessive caffeine from coffee or energy drinks, nicotine, and alcohol heavily irritate the heart’s electrical pathways.
Stress and Hormones: High levels of stress, anxiety, or panic release adrenaline, which naturally spikes your heart rate and increases ectopic activity. Dehydration, lack of sleep, and hormonal fluctuations (such as during pregnancy or menopause) are also major triggers.
Medications: Over-the-counter remedies, particularly cold and flu treatments containing decongestants like pseudoephedrine, act as cardiac stimulants.
The 12-Lead ECG: If you visit a GP, the first step is a resting electrocardiogram to map the heart’s electrical signals. However, because palpitations come and go, a standard ECG is often completely normal.
Holter Monitors: To catch intermittent flutters, a cardiologist will use a portable Holter monitor. This small, wearable device records your heart’s electrical activity continuously for 24 hours, 7 days, or even longer while you go about your normal routine.
Echocardiogram: An ultrasound scan of the heart may be ordered to verify that the physical structure, chambers, and valves of your heart are completely healthy and undamaged.
The Systemic Checklist: You should seek urgent medical assessment if your palpitations are accompanied by dizziness, lightheadedness, feeling faint, or an actual blackout.
Emergency Symptoms: Call 999 immediately if a sudden change in heart rhythm occurs alongside severe shortness of breath, a crushing chest pain, or a feeling of extreme pressure.
Pre-existing Conditions: If you have a known history of structural heart disease, previous heart failure, a past heart attack, or a strong family history of sudden cardiac death, any new or changing palpitations require prompt investigation by a specialist.
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