ST-segment elevation myocardial infarction (STEMI) predominantly affects older adults. Lower incidence among younger patients may challenge diagnosis. This study from HIP Investigator Dr. Brian Patterson was a 3-year, 10-center retrospective cohort study that included emergency department (ED) STEMI patients at or above 18 years of age treated with emergent PCI to determine if there is a delay in PCI for younger patients.
The primary outcome was door-to-balloon (D2B) time. They compared characteristics and outcomes among younger vs. older STEMI patients, and among age subgroups. While they found no statistically significant difference in D2B times between patients over 50 years old and those under 50 years old, nonwhite patients and those who smoke were disproportionately represented within the younger population. The very young and very old had higher odds of D2B times over 90 min.
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