Please note: reference image is displayed in place of Flash media.
Premature Ventricular Contraction (PVC) is an abnormal heartbeat, or arrhythmia, in which the ventricle contracts early without receiving a signal from the AV node.
The electrical system of the heart is made up of several parts that communicate with one another to signal the heart muscle fibers when to contract. The SA node starts the signal causing the atria to contract. This signal travels through the AV node and on to the bundle of His, bundle branches causing the ventricles to contract. The flow of electrical signals is what produces a normal heartbeat.
PVCs are caused by an abnormal firing of electrical signals in the ventricles that interfere with the normal electrical signal pathways of the heart. PVCs are also called heart palpitations. PVCs are a common arrhythmia and can occur in individuals without heart disease. Most often, these arrhythmias are harmless and certain lifestyle changes can help prevent PVCs.
©2022 Medmovie.com. All rights reserved. Medmovie.com creates and licenses medical illustrations and animations for educational use. Our goal is to increase your understanding of medical terminology and help communication between patients, caregiver and healthcare professionals. The content in the Media Library is for your information and education purposes only. The Media Library is not a substitute for professional medical advice, diagnosis or treatment for specific medical conditions.