PVCs are the most common ventricular arrhythmia. As with PACs, these are usually benign and not a predictor of future heart disease or problems.
They are spurred on by the same stimuli as PACs, for the most part. PVCs are usually only a problem in a patient with sustained PVCs (>6 in a row) or in a patient with significant heart disease.
They are caused by extra electrical impulses arising from one of the cardiac ventricles, usually the left ventricle.
Typical symptoms of PVCs are a feeling of palpitations or a skipped beat. Some will describe a sense of becoming aware of their heartbeat all of a sudden. They have been known to awake a patient from sleep, however this is usually not the case.

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