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Do patients with a prehospital electrocardiographic diagnosis of ST-segment–elevation myocardial infarction (STEMI) fare better when they bypass the emergency department (ED) on the way to the cardiac catheterization laboratory for primary percutaneous coronary intervention (PCI)? To find out, researchers analyzed data from 12,581 patients with STEMI in a large U.S. registry who were transported by emergency medical services (EMS) directly to a PCI-capable hospital. Of this cohort, 1316 patients (10.5%) bypassed the ED; the rest did not. This percentage increased from 8.5% in 2008 to 11.5% in 2011; patients were also more likely to bypass the ED during regular work hours than during off-hours (18% vs. 4% of the time).
The median time between…