Premature beats that start in your heart’s upper chambers are premature atrial contractions, or PACs. Those that start in the lower chambers are premature ventricular contractions, or PVCs. Watch an animation of a normal heartbeat.

Understanding the Context

They can happen to anyone but are more often found in older adults. PVCs are extra heartbeats that can make the heart beat out of rhythm. They are very common and may not be a concern. Learn when treatment is needed.

PVCS OR PACS? : r/PVCs

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Key Insights

Premature ventricular contractions (PVCs) are a type of irregular heartbeat. They occur when the electrical signal to start your heartbeat comes from your lower heart chambers. What Are Premature Ventricular Contractions (PVCs)? If your heart feels out of rhythm or “flutters,” especially when you're anxious or stressed, it could be caused by premature ventricular... Most premature ventricular complexes (PVCs) are harmless, but learn when to worry about PVCs and when to seek medical advice.

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Final Thoughts

When Are PVCs More Than Just a Heartbeat Quirk? - Verywell Health Premature ventricular contractions (PVCs) are common and usually no cause for concern. We review signs that you may need to see a doctor. Premature Ventricular Contractions (PVCs) are early contractions that originate in the ventricles, the bottom chambers of the heart. These contractions are typically caused by ventricular irritability. PVCs can occur suddenly and disrupt the normal electrical conduction process in the heart.