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  • Title: Transfer distance effect on reperfusion: timeline of ST-elevation patients transferred for primary percutaneous coronary intervention.
    Author: Minha S, Loh JP, Satler LF, Pendyala LK, Barbash IM, Magalhaes MA, Suddath WO, Pichard AD, Torguson R, Waksman R.
    Journal: Cardiovasc Revasc Med; 2014; 15(8):369-74. PubMed ID: 25223909.
    Abstract:
    OBJECTIVES: This study aims to establish if transfer distance impacts the outcome of ST-elevation myocardial infarction (STEMI) patients transferred to a percutaneous coronary intervention (PCI). BACKGROUND: Regional emergency care systems were designed to decrease delays in reperfusion of patients but the effect of transfer distance on outcome is less established. METHODS: We compare the characteristics and outcomes of STEMI patients transferred from a distance >25 miles (GT25) to those transferred from distances ≤25 miles (LT25) by utilizing data from a regional STEMI care network in the greater Washington DC area. RESULTS: Within the transferred patients (n=1065), 609 patients (57%) were transferred from GT25 (median distance 36 miles), while 456 (43%) were transferred from LT25 (median distance 13 miles). Most of the baseline characteristics between the groups were similar. Door-to-balloon (DTB) was defined as the time elapsed from the presentation to the center without PCI capability to flow restoration in the culprit artery. No differences were noted in the median DTB (GT25: 158min [122-213] vs. 149 [118-219]; p=0.5) or in in-hospital mortality (8% vs. 7.2%; p=0.617). By implementing the regional STEMI care network, a constant decrease in DTB was noted throughout its years of operation. CONCLUSIONS: For STEMI patients presenting to a non-PCI capable center, a network care system for PCI mitigates the distance factor on DTB time. This is turn translates into comparable outcomes.
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