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Detection of myocardial injury during transvenous implantation of automatic cardioverter-defibrillators

^a Department of Cardiology, University of Giessen, Giessen, Germany
^* Department of Clinical Chemistry, University of Giessen, Giessen, Germany

View larger version (20K): [in a new window]   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.

View larger version (10K): [in a new window]   Figure 2 Comparison of mean defibrillation energy applied during ICD testing in patients with and without cTNI concentrations elevated above cutoff value (1.5 ng/ml). cTNI = cardiac troponin I; DFE = defibrillation energy.