One of the most common complaints are palpitations. Palpitations are sense of an irregular heartbeat. Although this can vary greatly between individuals, one of the most common feeling is “skipped beats.” In most cases, these symptoms are due to “extra heartbeats” which are termed premature ventricular contractions (PVC) and premature atrial contractions (PAC) depending on where the extra heartbeat originates from. PVCs have their focus of origin in the ventricles, or pumping chambers of the heart, and PACs have their focus of origin in the atria, or upper chambers of the heart. Each of these can cause similar symptoms. The difference can be determined with a monitor and or ekg.