Ischemic Stroke and Troponin Elevation

Mechanisms and Clinical Significance

Type 2 myocardial infarction can occur from supply-demand mismatch when increased oxygen demand or decreased supply leads to myocardial injury without primary coronary thrombosis, affecting patients with acute ischemic stroke 1
15% of intracerebral hemorrhage patients have troponin elevation >0.4 ng/mL within 24 hours of admission, which is associated with increased in-hospital mortality, according to the American Heart Association 2

Serial troponin measurements at 3-6 hour intervals are essential to establish a rising/falling pattern characteristic of acute myocardial injury versus chronic elevation, as recommended by the American College of Cardiology 3
The magnitude of troponin elevation correlates with mortality risk, with higher levels associated with worse outcomes in patients with acute ischemic stroke, according to the American College of Cardiology 1
Echocardiography should be considered to assess for wall motion abnormalities and structural heart disease in patients with troponin elevation after stroke, as recommended by the American College of Cardiology 1