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Heart Disease Focus DictionaryA-E | F-J | K-O | P-S | T-Zventricular arrhythmias: Occurs when the beat is regular but may be so rapid that it interferes with normal cardiac pumping. ventricular fibrillation: An erratic, disorganized firing of impulses from the ventricles. The ventricles quiver and are unable to pump blood to the body or contract properly. ventricular tachycardia (V-tach): A rapid heart rhythm originating from the lower chambers (or ventricles) of the heart. The rapid rate prevents the heart from filling adequately and therefore ejecting properly. Wolff-Parkinson-White Syndrome: When there's an extra conduction pathway, the electrical signal may arrive at the ventricles too soon.
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