Pre-hospital delay and emergency medical services in acute myocardial infarction

Seok Kyu OhSeung Hun LeeHyun Kuk KimMyung Ho JeongJoo Myung LeeHyeon-Cheol GwonShung Chull ChaeIn-Whan SeongJong-Seon ParkJei Keon ChaeSeung-Ho HurKwang Soo ChaHyo-Soo KimKi-Bae SeungSeung-Woon RhaTae Hoon AhnChong-Jin KimJin-Yong HwangDong-Ju ChoiJunghan YoonSeung-Jae JooKyung-Kuk HwangDoo-Il Kim
Dept. of Internal Medicine (내과학)
Issue Date
The Korean Journal of Internal Medicine, Vol.35(1) : 119-132, 2020
Background/Aims: Minimising total ischemic time (TIT) is important for improving clinical outcomes in patients with ST-segment elevation myocardial infarction who have undergone percutaneous coronary intervention (PCI). TIT has not shown a significant improvement due to persistent pre-hospital delay. This study aimed to investigate the risk factors associated with pre-hospital delay. Methods: Individuals enrolled in the Korea Acute Myocardial Infarction Registry-National Institutes of Health between 2011 and 2015 were included in this study. The study population was analyzed according to the symptom-to-door time (STDT; within 60 or > 60 minutes), and according to the type of hospital visit (emergency medical services [EMS], non-PCI center, or PCI center). Results: A total of 4,874 patients were included in the analysis, of whom 28.4% arrived at the hospital within 60 minutes of symptom-onset. Old age (> 65 years), female gender, and renewed ischemia were independent predictors of delayed STDT. Utilising EMS was the only factor shown to reduce STDT within 60 minutes, even when cardiogenic shock was evident. The overall frequency of EMS utilisation was low (21.7%). Female gender was associated with not utilising EMS, whereas cardiogenic shock, previous myocardial infarction, familial history of ischemic heart disease, and off-hour visits were associated with utilising EMS. Conclusions: Factors associated with delayed STDT and not utilising EMS could be targets for preventive intervention to improve STDT and TIT.
Time factorsEmergency medical servicesMyocardial infarctionCardiogenic shockPrognosis
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1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
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