If you’ve ever had a fluttering heart, or noticed that your heart seems to skip a beat, you might be experiencing premature ventricular contractions (PVCs), a relatively common type of arrhythmia in both adults and children.
PVCs are the result of extra, abnormal heartbeats that begin in the ventricles, or lower pumping chambers, and disrupt your regular heart rhythm, which is controlled by a natural pacemaker known as the sinus node. This natural pacemaker creates electrical impulses that travel across the atria to the ventricles, causing them to contract and pump blood out to your lungs and body in what is known as normal sinus rhythm.
In the case of PVCs, the heart doesn’t actually skip a beat. Instead an extra beat comes sooner than normal. Then there’s typically a pause that causes the next beat to be more forceful, which is what most individuals detect. Although the range differs for each individual, we typically begin to see problems in patients with premature ventricular contractions that comprise 20 percent or more of total heartbeats.
PVCs can be caused by heart disease or scarring that can interfere with the heart’s normal electrical impulses. They can also be triggered by certain medications, alcohol, stress, exercise or caffeine. Continue reading