A premature ventricular beat (PVB) is an extra heartbeat caused by abnormal electrical activity. It starts in the ventricles (the lower chambers of the heart) before a normal heartbeat occurs. PVB interferes with the heart’s normal rhythm and causes a pause before the next heartbeat. It may feel like a heartbeat is skipped.
PVBs are common, especially among the elderly. They can occur in people who are healthy, in which case they are harmless. However, when they occur after a heart attack or heart surgery, they can lead to dangerous heart rhythms. In some cases, these rhythms can cause sudden death. You should contact your doctor right away if you suspect you have PVBs after a heart attack or heart surgery.
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The causes of PVBs include:
PVB frequency increases with age and PVBs are most common in the elderly. PVBs are also more common in men. Other factors that may increase your chance of PVBs include:
In many cases, there are no symptoms. When symptoms do occur they can include:
In people with heart disease, PVBs can cause decreased blood flow from the heart to other parts of the body. This can produce lightheadedness and fainting.
Your doctor will ask about your symptoms and medical history. A physical exam will be done. You may be referred to a cardiologist.
Tests may include:
In most cases, no treatment is needed. However, it can be helpful to reduce stress and avoid caffeine, alcohol, and tobacco. If a medication you are taking may be causing the PVBs, your doctor may change the medication or adjust the dosage.
You may need to take medication if you have significant symptoms from PVBs, have heart disease, or if the pattern of the PVBs indicates a risk of developing more serious heart rhythm problems. Beta-blockers are generally tried first since they are relatively safe medications. Antiarrhythmic medications may be used, but they may also increase the chances of developing dangerous heart rhythms. Other medications that may be used include calcium channel blockers. Talk with your doctor about the best treatment for you.
Heart Rhythm Society
Society of Thoracic Surgeons
Canadian Cardiovascular Society
Ventricular arrhythmias. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T909129/Ventricular-arrhythmias. Updated June 28, 2016. Accessed September 26, 2016.
Selzman KA, Gettes LS. Exercise-induced premature ventricular beats: Should we do anything differently? Circulation. 2004;109:2374-2375.
Ventricular premature beats (VPB). The Merck Manual Professional Edition website. Available at: http://www.merckmanuals.com/professional/cardiovascular_disorders/arrhythmias_and_conduction_disorders/ventricular_premature_beats_vpb.html. Updated September 2013. Accessed December 29, 2014.
Last reviewed December 2015 by Michael J. Fucci, DO
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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