Arrhythmogenic right ventricular dysplasia natural history: Difference between revisions
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Latest revision as of 17:48, 6 May 2020
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Arrhythmogenic right ventricular dysplasia Microchapters |
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Differentiating Arrhythmogenic right ventricular dysplasia from other Diseases |
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Diagnosis |
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Treatment |
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Arrhythmogenic right ventricular dysplasia natural history On the Web |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Natural History
- The first clinical signs of ARVD are usually during adolescence. However, signs of ARVD have been demonstrated in infants.
- There may be a long asymptomatic lead-time in individuals with ARVD. While this is a genetically transmitted disease, individuals in their teens may not have any characteristics of ARVD on screening tests.
Many individuals have symptoms associated with ventricular tachycardia, such as palpitations, light-headedness, or syncope. Others may have symptoms and signs related to right ventricular failure, such as lower extremity edema, liver congestion with elevated hepatic enzymes. Unfortunately, sudden death may be the first manifestation of disease.
ARVD is a progressive disease. Over time, the right ventricle becomes more involved, leading to right ventricular failure. The right ventricle will fail before there is left ventricular dysfunction. However, by the time the individual has signs of overt right ventricular failure, there will be histological involvement of the left ventricle. Eventually, the left ventricle will also become involved, leading to bi-ventricular failure. Signs and symptoms of left ventricular failure may become evident, including congestive heart failure, atrial fibrillation, and an increased incidence of thromboembolic events.
Complications
Prognosis
It accounts for up to 17% of all sudden cardiac deaths in the young. In Italy, the incidence is 40/10,000, making it the most common cause of sudden cardiac death in the young population. The left ventricle is involved in 50-67% of individuals. If the left ventricle is involved, it is usually late in the course of disease, and confers a poor prognosis. Once hypertrophic cardiomyopathy is excluded, it is a common cause of sudden cardiac death in competitive athletes.