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Figure 1 Time course of changes in cardiac troponin I (cTNI) levels for each of the 49 study patients after ICD implantation. Preoperative values are indicated by the first symbol in each curve at 0 h. The dotted line denotes the upper reference limit (cutoff) of the cTNI assay used, which is 1.5 ng/ml. The bulky lines represent patients with cTNI concentrations above cutoff value, whereas patients with cTNI concentrations below cutoff value are denoted by the thin lines.
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