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J Am Coll Cardiol, 1999; 34:402-408
© 1999 by the American College of Cardiology Foundation
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Detection of myocardial injury during transvenous implantation of automatic cardioverter-defibrillators

Tanja M. Hurst, MD*, Michael Hinrichsa, Christiane Breidenbacha, Norbert Katz, PhD* and Bernd Waldecker, MDa

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



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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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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.

 





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