is an abnormal heartbeat that is caused by an abnormal firing of electrical signals in the atria of the heart that interfere with electrical signals coming from the natural pacemaker of the heart (SA node). The rapid heartbeat does not allow enough time for the heart to fill before it contracts so blood flow to the rest of the body is compromised which may lead to symptoms of dizziness, lightheadedness, unconsciousness, and cardiac arrest.
© 2007 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.