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Background: Cardiac involvement in the sarcoidosis is known to ensue with diverse clinical forms and its investigation is challenging at times. This article features the under-perceived burden, patterns, and outcomes of different arrhythmias, which may have a prognostic significance in patients with sarcoidosis. Methods: We queried the National Inpatient Sample (NIS) for 2010-2014 to recognize sarcoidosis, arrhythmia, and comorbidities affecting hospitalizations. The nationwide estimates were attained using discharge records. We assessed incidence and trends in sarcoidosis-related arrhythmia and consequential inpatient mortality, hospital length of stay (LOS), hospitalization charges and predictors of mortality with multivariate analysis. Results: We identified 369,285 sarcoidosis-related hospitalizations. Of these, nearly one-fifth suffered from arrhythmias (n=73,424). The sarcoidosis patients developing arrhythmias were older (61.9 vs. 56.0 years) compared to those without. Males had the higher incidence of arrhythmias compared to females. Atrial fibrillation (Afib) (10.97%) was the most common subtype, followed by ventricular tachycardia (1.97%). There was a rising trend in arrhythmia-related hospital admissions and mortality among sarcoidosis, with Afib incidence displaying the highest increase. Traditional cardiac comorbidities were higher in the sarcoid-arrhythmia group. The arrhythmia group had significantly higher mortality (3.7% vs. 1.5%), mean hospital LOS (6.4 vs. 5.2 days) and hospital charges ($64,118 vs. $41,565) compared to non-arrhythmia group (P<0.001). Incident arrhythmia significantly increased the mortality odds in sarcoidosis (adjusted odds ratio, 2.06). Conclusions: The growing trend, deteriorating outcomes and higher mortality associated with sarcoidrelated arrhythmias highlight the importance of timely diagnosis and aggressive management in this population.