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Ectopic heartbeat
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Ectopic heartbeat

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PVB (premature ventricular beat); Premature beats; PVC (premature ventricular complex/contraction); Extrasystole

Ectopic heartbeats are small changes in a heartbeat that is otherwise normal. These changes lead to extra or skipped heartbeats. Often there is not a clear cause for these changes. They are mostly harmless.

The two most common types of ectopic heartbeats are:

  • Premature ventricular contractions (PVC)
  • Premature atrial contractions (PAC)

I Would Like to Learn About:

  • Causes

    Sometimes ectopic heartbeats are seen with:

    • Changes in the blood, such as a low potassium level (hypokalemia)
    • Decrease in blood supply to the heart
    • Heart muscle disease (cardiomyopathy)

    Ectopic beats may be caused or made worse by smoking, alcohol use, caffeine, stimulant medicines, and some street drugs.

    Ectopic heartbeats are rare in children without heart disease that was present at birth (congenital). Most extra heartbeats in children are premature atrial contractions (PACs). These are almost always harmless.

    In adults, ectopic heartbeats are common. They are most often due to PACs or PVCs. Your doctor should look into the cause, but no treatment is needed most of the time.

  • Symptoms

    Symptoms include:

    • Feeling your heart beat (palpitations)
    • Feeling like your heart stopped or skipped a beat
    • Feeling of occasional, forceful beats

    Note: There may be no symptoms.

  • Exams and Tests

    A physical exam may show an occasional uneven pulse. If the ectopic heartbeats do not occur very often, your doctor may not find them during a physical exam.

    Blood pressure is most often normal.

    The following tests may be done:

    • Continuous ambulatory cardiac monitoring (Holter monitor, patient-activated recording device, or implanted loop recorder)
    • Coronary angiography
    • ECG
    • Echocardiogram
  • Treatment

    The following may help reduce ectopic heartbeats for some people:

    • Limiting caffeine, alcohol, and tobacco
    • Regular exercise for people who are inactive

    Most ectopic heartbeats do not need to be treated. The condition is only treated if your symptoms are severe or if the extra beats occur very often.

    The cause of the heartbeats, if it can be found, may also need to be treated.

  • Outlook (Prognosis)

    In some cases, ectopic heartbeats may mean you are at greater risk for serious abnormal heart rhythms, such as ventricular tachycardia.

  • When to Contact a Medical Professional

    Call your health care provider if:

    • You keep feeling the sensation of your heart pounding or racing (palpitations).
    • You have palpitations with chest pain or other symptoms.
    • You have this condition and your symptoms get worse or do not improve with treatment.

Related Information

  PulseHeart palpitations...Alcohol use and sa...Caffeine in the di...BenignVentricular tachyc...    

References

Olgin JE. Approach to the patient with suspected arrhythmias. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap. 62.

Rubart M, Zipes D. Genesis of cardiac arrhythmias: electrophysiologic considerations. In: Bonow RO, Mann DL, Zipes DP, Libby P, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 9th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap 35.

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Review Date: 5/13/2014  

Reviewed By: Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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