A heart that “skips a beat” is almost always an extra heartbeat firing slightly early, not a missed one. These early beats, called premature contractions, are so common that 40% to 75% of people have them when monitored over 24 to 48 hours. Most of the time they’re harmless, but the sensation can be unsettling enough to send you searching for answers.
Why It Feels Like a Skip
Your heart has a built-in electrical pacemaker that keeps a steady rhythm. Sometimes a stray electrical signal fires before the next scheduled beat, causing the heart to contract a fraction of a second too early. That premature beat is usually weaker than normal because the heart hasn’t had time to fill completely with blood, so you barely feel it.
What you do feel is what comes next. After the early beat, your heart pauses slightly longer than usual before the next regular beat. During that pause, the heart fills with more blood than it typically would, so the following contraction is noticeably stronger. That “thump” or lurching sensation is what most people register as a skipped beat. It’s actually the recovery beat, not a missing one.
Where the Extra Beats Come From
Premature beats can originate in two places. When the stray signal starts in the upper chambers of the heart, it’s called a premature atrial contraction (PAC). When it starts in the lower chambers, it’s a premature ventricular contraction (PVC). PVCs tend to produce a more noticeable thump because the lower chambers are responsible for pumping blood to the rest of your body, so the disruption is more forceful.
Both types can cause the same range of sensations: a fluttering feeling, a single hard beat, a brief pause, or a sense that your heart “flipped.” Some people feel nothing at all and only discover they have premature beats during a routine exam.
Common Triggers
Premature beats often have identifiable triggers. The most frequently reported ones include:
- Caffeine and alcohol, both of which can increase cardiac irritability
- Stress and anxiety, which raise adrenaline levels
- Dehydration, which changes the balance of electrolytes your heart depends on
- Poor sleep or general fatigue
- Smoking and nicotine
- Certain medications, particularly nasal decongestants containing pseudoephedrine
- Hormonal shifts during pregnancy or menopause
- Heavy, high-sugar, or high-fat meals, which can provoke palpitations shortly after eating
For many people, reducing or eliminating one or two of these triggers is enough to make the skipped beats disappear. Staying well hydrated and managing stress are two of the simplest starting points.
When Skipped Beats Are Harmless
The vast majority of premature beats carry no health risk. If you feel an occasional skip during an otherwise normal day, your heart is structurally healthy, and you have no other symptoms, there’s typically nothing to worry about. Even frequent premature beats in people with no underlying heart disease often require no treatment at all.
The key word is “occasional.” A few extra beats per hour, or even a few dozen scattered across a day, fall well within the range of normal. Most people become aware of them during quiet moments, lying in bed at night for instance, simply because there’s less going on to distract from subtle body sensations.
When to Take Them Seriously
Skipped beats become more significant when they’re accompanied by other symptoms or happen in very high volumes. Pay attention if you experience any of the following alongside the skipping sensation:
- Fainting or near-fainting, especially during physical activity
- Chest pain or pressure
- Significant shortness of breath
- Sustained rapid or irregular heartbeat that doesn’t settle on its own
- Dizziness that lasts more than a few seconds
Fainting during exercise combined with an unusual heart rhythm is a particularly important warning sign and warrants prompt medical evaluation. These symptoms can indicate that the irregular rhythm is interfering with your heart’s ability to pump blood effectively.
Volume matters too. Research suggests that when premature ventricular beats make up more than about 15% to 24% of all heartbeats over a 24-hour period, the constant irregular pumping can gradually weaken the heart muscle. In some cases, weakening has been observed at burdens as low as 10%, depending on where in the heart the extra beats originate. This is uncommon, but it’s the main reason doctors monitor people with very frequent PVCs over time.
How Doctors Evaluate Skipped Beats
If your skipped beats are frequent or bothersome enough to investigate, the first step is usually a heart monitor. A standard Holter monitor records your heart’s electrical activity continuously for about 24 hours. Newer adhesive patch monitors can be worn for up to 14 days, which increases the chances of catching irregular rhythms that don’t happen every day. In one comparison study, the longer-wearing patch detected significantly more rhythm events than a standard 24-hour monitor.
The monitor results tell your doctor two things: what type of premature beat you’re having and how many occur over the recording period. That second number, expressed as a percentage of your total heartbeats, is called your “burden” and helps determine whether the beats could affect heart function over time. An echocardiogram (an ultrasound of the heart) may also be ordered to check that the heart’s structure and pumping strength look normal.
Treatment Options
For infrequent, symptom-free premature beats, the treatment is reassurance and lifestyle adjustments. Cutting back on caffeine, alcohol, and stimulants, improving sleep, and managing stress often make a meaningful difference.
When the beats are frequent enough to cause disruptive symptoms, medication is the typical next step. A beta blocker, which slows the heart rate and dampens the effect of adrenaline, is the standard first-line option. It’s usually started at a low dose and gradually increased until symptoms improve. If a beta blocker doesn’t provide enough relief, other heart rhythm medications can be considered.
For people with a high burden of PVCs that don’t respond well to medication, or when the extra beats are beginning to weaken the heart, catheter ablation is an option. This procedure targets and destroys the small patch of tissue generating the abnormal signals. Success rates are high: about 85% of patients see a major reduction in PVCs at six months, and roughly 82% maintain that improvement at three years. People without underlying heart disease and those whose PVCs originate from more accessible locations in the heart tend to have the best long-term outcomes.
Living With Occasional Skips
If you’ve felt your heart skip and landed on this page, the most likely explanation is a premature beat that’s completely benign. These are one of the most common heart rhythm variations in healthy people, and noticing them doesn’t mean something is wrong with your heart. Tracking your triggers, particularly caffeine, alcohol, sleep, and stress, often gives you a surprising degree of control over how often they happen.