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Figure 1 Baseline, post-procedural and late (4–24 h) serum cTnI levels in 118 patients undergoing RFA and in 39 control patients having EPS alone. cTnI = cardiac troponin I; EPS = electrophysiologic studies; RFA = radiofrequency ablation. *p = NS; **p = 0.001; *** p < 0.001.