Electrogram-Guidance: A Method to Increase the Precision and Diagnostic Yield of Endomyocardial Biopsy for Suspected Cardiac Sarcoidosis and Myocarditis

摘要

BackgroundEndomyocardial biopsy (EMB) is of value in determining the underlying etiology of a cardiomyopathy. The sensitivity, however, for focal disorders, such as lymphocytic myocarditis and cardiac sarcoidosis (CS), is low. The sensitivity of routine fluoroscopically guided EMB is low. Abnormal intracardiac electrograms are seen at sites of myocardial disease. However, the exact value for electrogram-guided EMB is unknown.