Christenson, R. H., Leino, E. V., Giugliano, R. P., Bahr, R. D. Usefulness of prodromal unstable angina pectoris in predicting better survival and smaller infarct size in acute myocardial infarction (The InTIME-II Prodromal Symptoms Substudy) Am J Cardiol. 2003;92(5):598-600.

Prodromal unstable angina on presentation is a significant predictor of smaller infarct size, reflected by smaller creatine kinase-MB and creatine kinase total measurements and lower 30-day, 6-month, and 5-year mortality. These findings suggest that prodromal unstable angina is an important physiologic marker that should be routinely collected for risk stratification.