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Updated: Aug 3, 2026

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
Published on: October 28, 2020
[Arrhythmogenic right ventricular dysplasia and Uhl disease. Anatomic study of 100 cases after sudden death]
Insights
Arrhythmogenic right ventricular dysplasia (ARVD) is a key cause of sudden cardiac death in young adults. Pathologists play a crucial role in diagnosing this condition, which involves fatty tissue replacing heart muscle.
Area of Science:
- Cardiology
- Pathology
- Genetics
Context:
- Arrhythmogenic right ventricular dysplasia (ARVD) is a significant cause of sudden unexpected death, particularly in young adults.
- Pathological examination of 100 cases highlights diagnostic challenges and limitations.
- The disease is characterized by the replacement of right ventricular muscle with fatty tissue.
Purpose:
- To assess the diagnostic value and limitations of endomyocardial biopsy in ARVD.
- To emphasize the high prevalence of ARVD in sudden unexpected deaths among young individuals.
- To highlight associated cardiac lesions and potential etiological factors.
Summary:
- This study analyzed 100 cases of ARVD, focusing on its role in sudden death and diagnostic considerations for pathologists.
- Key findings include the thinness of the right ventricular wall, muscle cell absence replaced by fatty tissue, and associated cardiac abnormalities.
- Apoptotic anomalies are implicated in the loss of right ventricular muscle.
Impact:
- Underscores the importance of recognizing ARVD in forensic pathology and clinical practice.
- Recommends genetic screening for family members of affected individuals.
- Contributes to understanding the pathophysiology and diagnostic criteria for ARVD.
Abstract:
Assessing 100 cases of arrhythmogenic right ventricular dysplasia causing unexpected sudden death, we stress two aspects of the disease, specially concerning pathologists: diagnosis value and limitations of endomyocardial biopsy and high frequency of the disease among unexpected sudden death in young adults. When the disease is identified genetic screening should be performed among patient's family members. The anterior right ventricular wall is very thin (partly or completely) and microscopic examination shows absence of muscle cells, replaced by normal fatty tissue. Associated lesions are often present: slight abnormalities of left ventricle, mucoid degeneration of auriculo-ventricular valves and recently described lesions of His conductive tissue. Apoptotic anomalies are now incriminated for agenesy or disappearing right ventricular muscle.
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