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Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited heart condition in which the muscle of the right ventricle of the heart is replaced by fat and/or scar tissue. The condition often leads to the right ventricle losing the ability to pump blood. Individuals with ARVC often develop abnormal heart rhythms known as arrhythmias. Other symptoms of ARVC include chest palpitations, dizziness, fainting and shortness of breath. ARVC is caused by genetic changes in genes that instruct proteins to link one heart cell to the next. There is also some evidence that ARVC could be caused by an infection of the heart muscle.