Premature ventricular contraction

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Science and technology

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What Wikipedia says

A premature ventricular contraction (PVC) is a common event where the heartbeat is initiated by Purkinje fibers in the ventricles rather than by the sinoatrial node. PVCs may cause no symptoms or may be perceived as a "skipped beat" or felt as palpitations in the chest. PVCs do not usually pose any danger.

Excerpt from the Wikipedia article “Premature ventricular contraction”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: YitzhakNat, CC BY-SA 4.0, via Wikimedia Commons.