Highly Sensitive Cardiac Troponin T Values Remain Constant after Brief Exercise- or Pharmacologic-Induced Reversible Myocardial Ischemia

100 patients undergoing nuclear stress testing (SPECT) for suspected ischemic heart disease (18 with reversible perfusion defects, 41 with fixed, 41 with none), after excluding patients with baseline cTnT >30 ng/L or combined fixed/reversible defects.

Nuclear stress testing (61 dynamic, 39 pharmacological) with serial high-sensitivity cardiac troponin T (hsTnT) measurements.

Baseline hsTnT levels vs post-stress test levels across groups with reversible, fixed, or no perfusion defects.

Change in high-sensitivity cardiac troponin T (hsTnT) concentrations at 18 min, 4 h, and 24 h after stress testing.surrogate