Effect of Prehospital Blood Draws on Length of Stay for Chest Pain Patients in the Emergency Department: A Pilot Study.

This article provides research of cardiac biomarkers being drawn in the prehospital setting compared with the emergency department (ED) on intervals critical to the diagnosis of acute myocardial infarction. This is a retrospective chart review of patients brought to the ED of a single, urban teaching hospital by a single emergency medical service (EMS) agency with a chief complaint of "chest pain." We abstracted specific patient characteristics, intervals, positive troponin values, and rates of hemolysis from hospital records utilizing a custom data abstraction tool designed for this study through consensus of the authors.