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Prehospital system delay in patients with ST-segment elevation myocardial infarction in Singapore

查看全文 作　　者：Andrew Fu Wah [1]Ho;Pin Pin [2]Pek;Stephanie Fook-[3]Chong;Ting Hway [4]Wong;Yih Yng [5]Ng;Aaron Sung Lung [6]Wong;Marcus Eng Hock [2]Ong 高影响力作者 机构地区：[1]Singhealth Emergency Medicine Residency Program,Singapore Health Services;[2]Department of Emergency Medicine,Singapore General Hospital;[3]Division of Research,Singapore General Hospital;[4]Department of General Surgery,Singapore General Hospital;[5]Medical Department,Singapore Civil Defence Force;[6]Department of Cardiology,National Heart Centre高影响力机构 出　　处：《World Journal of Emergency Medicine》索引2015年第6卷第4期,共6页高影响力期刊 摘　　要：BACKGROUND: Timely reperfusion in ST-segment elevation myocardial infarction(STEMI)improves outcomes. System delay is that between first medical contact and reperfusion therapy,comprising prehospital and hospital components. This study aimed to characterize prehospital system delay in Singapore.METHODS: A retrospective chart review was performed for 462 consecutive STEMI patients presenting to a tertiary hospital from December 2006 to April 2008. Patients with cardiac arrest secondarily presented were excluded. For those who received emergency medical services(EMS),ambulance records were reviewed. Time intervals in the hospital were collected prospectively. The patients were divided into two equal groups of high/low prehospital system delay using visual binning technique.RESULTS: Of 462 patients, 76 received EMS and 52 of the 76 patients were analyzed. The median system delay was 125.5 minutes and the median prehospital system delay was 33.5minutes(interquartile range [IQR]=27.0, 42.0). Delay between call-received-by-ambulance and ambulance-dispatched was 2.48 minutes(IQR=1.47, 16.55); between ambulance-dispatch and arrival-at-patient-location was 8.07 minutes(IQR=1.30, 22.13); between arrival-at- and departurefrom-patient-location was 13.12 minutes(IQR=3.12, 32.2); and between leaving-patient-location to ED-registration was 9.90 minutes(IQR=1.62, 32.92). Comparing patients with prehospital system delay of less than 35.5 minutes versus more showed that the median delay between ambulancedispatch and arrival-at-patient-location was shorter(5.75 vs. 9.37 minutes, P<0.01). The median delay between arrival-at-patient-location and leaving-patient-location was also shorter(10.78 vs.14.37 minutes, P<0.01).CONCLUSION: Prehospital system delay in our patients was suboptimal. This is the first attempt at characterizing prehospital system delay in Singapore and forms the basis for improving efficiency of STEMI care. 关 键 词：Myocardial infarction Emergency medical services DELAY First medical contact Door to balloon
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