Abstract
Background: Cardiac sarcoidosis is generally recognized as a cause of ventricular tachycardia (VT) and sudden death. Before, we described the characteristics and outcome of VT due to cardiac sarcoidosis. This time, we make a study of sarcoid VT coursed from epicardium. Method and Result: In the 9 consecutive patients (57±11 years, 2 male) who admitted to our hospital with the diagnosis of VT associated with cardiac sarcoidosis and underwent radiofrequency catheter ablation, we were able to confirm 2 VTs (2 patients) coursed from epicardium. (31 VTs were appeared in 9 patients. 6.4%). The LVEF were 47% in the patient who have endcardium VT. (The meam LVEF of cardiac sarcoidosis patient 41±10%). VTs coursed from epicardium cannot induced from program stimulations. Both VTs coursed from posterior wall of left ventricle and cannot disappear catheter ablation from endocardium. Epicardium VTs have not purkinje-fiber potentials before or after the potential, and terminated naturally without sustain over 30 second. During 26 month follow-up, fatal VT episodes were not occur. Conclusion: Cardiac sarcoidosis provoke different types of VTs. In our study, VTs course from epicarium were fewer than that course from endocardium.
Published Version
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