Skipped Heartbeats and PVCs: What the Sensation Can Mean
That 'flip-flop' or skipped-beat feeling can come from PVCs, PACs, or other rhythm patterns. Here's how to think about the sensation.
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That sudden "flip-flop," the feeling that your heart skipped a beat or did a little somersault in your chest — it's one of the most common and most unsettling heart sensations there is. A premature ventricular contraction (PVC) is one possible explanation, but so are premature atrial contractions, normal rhythm variation, and other intermittent rhythms. The useful question is not what it "feels like" alone, but what rhythm is present when the sensation happens.
What a "Skipped Beat" Actually Is
Despite how it feels, your heart may not be truly skipping. What may be happening is an extra early beat:
- A PVC is an early beat from the heart's lower chambers (ventricles).
- A PAC (premature atrial contraction) is an early beat from the upper chambers.
The early beat comes sooner than expected, then there's a slightly longer pause before the next normal beat. That pause lets the heart fill with a little extra blood, so the following beat is more forceful — and that's the thump or flip-flop you feel. Ironically, you often feel the pause and the big beat after, not the extra beat itself.
Why PVCs Are So Common
Premature beats are common, including in people without known heart disease. Many people have them without noticing. Common contributors include:
- Caffeine and alcohol
- Stress and anxiety
- Poor sleep or fatigue
- Nicotine
- Dehydration or electrolyte imbalances (low potassium or magnesium)
- Stimulant medications, including some decongestants
In an otherwise healthy heart, occasional premature beats are often considered low risk, but the context matters: frequency, symptoms, exertional pattern, ECG findings, and cardiac history all change the interpretation.
Patterns That Are Often Lower Risk
More reassuring features include:
- They're occasional and brief.
- They tend to go away with exercise (your normal rhythm speeds up and "outpaces" them).
- You feel otherwise well — no dizziness, breathlessness, or chest pain.
- They're clearly linked to a trigger like too much coffee or a rough night's sleep.
Features That Tend to Prompt a Closer Look or Can Indicate an Emergency
Certain patterns make PVCs more likely to reflect something beyond a benign extra beat — and they overlap with features used when evaluating palpitations generally (American Family Physician, 2017):
- They become frequent or feel like they're happening constantly.
- They come in runs (several in a row).
- They're accompanied by lightheadedness, breathlessness, fatigue, or chest discomfort.
- They get worse with exertion rather than better.
- There's a known heart condition or a family history of heart disease or sudden cardiac death.
Very frequent PVCs over long periods can, in some people, affect heart function — which is exactly why documenting how often they're really occurring is useful. The concern with "runs" is specific: three or more consecutive ventricular beats at a rate above 100 beats per minute is the formal definition of ventricular tachycardia, a rhythm that ranges from brief and self-limited (nonsustained, lasting under 30 seconds) to sustained and dangerous (Cochrane Database of Systematic Reviews, 2026). That's why a cluster of skips feels different from a lone one — and why it's worth measuring.
When Skipped Beats Come With Other Symptoms
A skipped-beat sensation by itself is interpreted differently from skipped beats paired with chest pain or pressure, severe shortness of breath, fainting or near-fainting, or a sustained, very rapid or markedly irregular heartbeat. Those combinations are recognized in clinical references as higher-risk than an isolated extra-beat sensation.
The Key Question: How Often Is This Really Happening?
When it comes to PVCs, frequency is everything — and it's nearly impossible to judge from feeling alone. A short office EKG might catch one, none, or be falsely reassuring.
Extended monitoring answers the question directly. A Zio® patch records every beat for up to 14 days, so a physician can count exactly how many PVCs you're having, whether they cluster or run together, and whether they line up with your symptoms. That "PVC burden" is what guides whether anything needs to be done at all. Major cardiology guidelines specifically endorse ambulatory tools — Holter monitors, adhesive patch recorders, and mobile cardiac outpatient telemetry — for capturing an arrhythmia in people whose symptoms come and go (ACC/AHA/HRS syncope guidelines, American Family Physician, 2018). Even single-lead recorders can be useful for documenting "palpitations of uncertain etiology" when a standard office EKG comes back normal (American Family Physician, 2020).
How to Get Monitored
Telehealth can shorten the path to outpatient rhythm documentation. Through physician review, a Zio® patch can be sent to the home when appropriate — worn during normal life and read by a physician afterward.
In the Meantime
- Ease off caffeine, alcohol, and nicotine and see if it helps.
- Prioritize sleep and hydration.
- Note when the skips happen and what preceded them.
The Bottom Line
A skipped-beat sensation can reflect a benign premature beat, especially when episodes are occasional and tied to common triggers such as caffeine, stress, or poor sleep. But frequent skips, runs of them, or skips paired with other symptoms are better understood by measurement — and frequency can only be estimated accurately from a recording, not from feeling alone.
Sources & Further Reading
This article draws on peer-reviewed clinical literature:
- Palpitations: Evaluation in the Primary Care Setting. American Family Physician (2017) — clinical features associated with a cardiac cause.
- ACC/AHA/HRS Syncope Evaluation and Treatment Guidelines. American Family Physician (2018) — ambulatory monitoring options for intermittent symptoms.
- KardiaMobile for ECG Monitoring and Arrhythmia Diagnosis. American Family Physician (2020) — recording palpitations of uncertain etiology.
- AI-Enabled Electrocardiography and Ventricular Tachycardia. Cochrane Database of Systematic Reviews (2026) — definition of ventricular tachycardia.
This blog post is for educational purposes only and is not a substitute for professional medical advice. If you're experiencing chest pain, severe shortness of breath, or think you're having a heart attack, call 911 immediately.