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Figure 2 Relationship between left ventricular ejection fraction (LVEF) and peak cardiac troponin I (cTnI) level. A significantly lower LVEF was found in troponin-positive versus -negative patients (r = 0.44, p = 0.0006). All patients with LVEF <45% (left of thin vertical line) had sepsis or septic shock, and 11 of 13 were troponin-positive. The normal cutoff level for cTnI is indicated at 0.1 µg/l by a bold horizontal line.