Premature Ventricular Contraction (PVC) is a dysrhythmia that is produced by an ectopic beat originating in a ventricle and being discharged at a rate faster than that of the next normally occurring beat. PVC's of 6 minutes or more is life threatening.
Ventricular Bigeminy is a PVC where every other beat is a ventricular complex.
Ventricular Tachycardia is a life threatening dysrhythmia that originated from an irritable focus within the ventricle. It is an ineffective rhythm for maintaining cardiac output. It is an emergency.
Ventricular Fibrillation is a dysrhythmia that is characterized by the random and chaotic discharging of impulses within the ventricle at rates that exceed 300 beats per minute. It produces clinical death and must be reversed immediately. It is an emergency.
