Arrhythmia in Cardiac Sarcoidosis

Area of Science:

• Cardiology
• Immunology
• Pathology

Background:

• Cardiac sarcoidosis (CS) is a granulomatous inflammatory disease affecting the heart.
• CS can lead to diverse arrhythmias and sudden cardiac death (SCD), often as the initial presentation.
• Untreated CS results in significant arrhythmogenic morbidity and mortality.

Purpose of the Study:

• To summarize the current understanding of cardiac sarcoidosis, focusing on diagnosis, risk stratification, and management of arrhythmias.
• To highlight the challenges in CS diagnosis and the evolving role of advanced imaging.
• To discuss therapeutic strategies including corticosteroids, ICDs, and catheter ablation.

Main Methods:

• Review of current literature and clinical guidelines on cardiac sarcoidosis.
• Analysis of diagnostic approaches, including endomyocardial biopsy and advanced cardiac imaging.
• Evaluation of therapeutic interventions and their efficacy in managing CS-related arrhythmias.

Main Results:

• Endomyocardial biopsy is diagnostic but limited by patchy granuloma distribution.
• Advanced cardiac imaging is increasingly important for CS diagnosis.
• Corticosteroids, ICDs, and catheter ablation play roles in management, with careful patient selection crucial for ablation success.

Conclusions:

• Effective management of CS-related arrhythmias requires accurate diagnosis and risk stratification.
• Further research into CS pathophysiology and optimal therapeutic strategies is essential.
• Reducing the high morbidity and mortality of CS necessitates improved diagnostic pathways and targeted treatments.