Skip navigation
MedlinePlus Trusted Health Information for You U.S. National Library of MedicineNational Institutes of Health
Contact Us FAQs Site Map About MedlinePlus
español Home Health Topics Drugs & Supplements Medical Encyclopedia Dictionary News Directories Other Resources

 

Medical Encyclopedia

Other encyclopedia topics:  A-Ag  Ah-Ap  Aq-Az  B-Bk  Bl-Bz  C-Cg  Ch-Co  Cp-Cz  D-Di  Dj-Dz  E-Ep  Eq-Ez  F  G  H-Hf  Hg-Hz  I-In  Io-Iz  J  K  L-Ln  Lo-Lz  M-Mf  Mg-Mz  N  O  P-Pl  Pm-Pz  Q  R  S-Sh  Si-Sp  Sq-Sz  T-Tn  To-Tz  U  V  W  X  Y  Z  0-9 

Ectopic heartbeat

Printer-friendly versionEmail this page to a friend
Contents of this page:

Illustrations

Heart, section through the middle
Heart, section through the middle
Heart, front view
Heart, front view
Electrocardiogram (ECG)
Electrocardiogram (ECG)

Alternative Names    Return to top

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

Definition    Return to top

Ectopic heartbeat is an irregularity of the heart rate and heart rhythm involving extra or skipped heartbeats.

Causes    Return to top

Ectopic heartbeats are an arrhythmia involving small variations in an otherwise normal heartbeat. In many cases, they may occur without obvious cause and be benign.

Other times, however, they are associated with electrolyte abnormalities in the blood which should be corrected. They can also be associated with ischemia, or local reduction in blood supply to the heart. In addition, ectopic beats may be caused or made worse by excessive smoking, alcohol consumption, caffeine, certain medications, and some illicit drugs.

Ectopic beats are rare in children other than those with congenital heart disease. The majority of extra heartbeats in children are PAC's (premature atrial contractions), which are almost always benign.

In adults, ectopic beats can occur more commonly, and underlying reversible reasons should be investigated even if it turns out that no treatment is ultimately needed.

Symptoms    Return to top

Note: In many cases, the person may have no symptoms.

Exams and Tests    Return to top

A physical examination may show an occasional irregularity, but if the ectopic beats do not occur frequently, they may not be detectable on physical exam. Blood pressure is usually normal.

The following tests may be used to diagnosis an ectopic heartbeat:

Treatment    Return to top

Often ectopic heartbeats do not require treatment. The condition is treated if symptoms are severe or if extra beats are very frequent.

An underlying cause, if discovered, may also require treatment.

Outlook (Prognosis)    Return to top

Ectopic heartbeats are generally benign, requiring no treatment. Occasionally, they may indicate an increased risk for other cardiac arrhythmias.

Possible Complications    Return to top

Note: There usually are no complications.

When to Contact a Medical Professional    Return to top

Call your health care provider if you feel palpitations that are persistent or are accompanied by chest pain or other symptoms.

Call your health care provider if ectopic heartbeats have been diagnosed and the symptoms worsen or do not improve with treatment.

Prevention    Return to top

Moderation in caffeine, alcohol, and tobacco use may reduce the risk of ectopic heartbeats in some people. Exercise often helps persons who lead a sedentary lifestyle.

Update Date: 5/31/2006

Updated by: Glenn Gandelman, MD, MPH, Assistant Clinical Professor of Medicine, New York Medical College, Valhalla, NY. Review provided by VeriMed Healthcare Network.

A.D.A.M. Logo

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 1997-2008, A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.