Abstract
We investigated the usefulness of PH-ECG (pre-hospital 12-leads electrocardiogram) performed by paramedics during emergency ambulance transportation to the reperfusion therapy of acute myocardial infarction. Subjects: 882 catheterization patients of acute myocardial infarction admitted by Yokohama Cardiovascular Workshop Emergency Medical System from 2010 through 2012. Methods: Retrospect study on time from door-to-cardiac catheter laboratory time (D2CCL), door-to-balloon time (D2B), and door-to-reperfusion time (D2R) comparing with type and part of the infarction and having PH-ECG or not. Results: In both the group with all cases and the group with ST-elevation myocardial infarction (STEMI), significant reductions of the D2CCL and D2R were observed in the patients who underwent PH-ECG as compared to the patients who did not undergo PH-ECG. In non-ST elevation myocardial infarction (NSTEMI) group, significant was reductions of the D2R. In the comparison depending on the location of the infarction (anterior wall, inferior wall, posterior/lateral wall), significant reductions of the D2CCL and D2R were observed with implementation of PH-ECG. Conclusion: Our findings suggested that implementation of PH-ECG of AMI patients may reduce the time to reperfusion not only STEMI group but also NSTEMI group. PH-ECG is expected shortening to reperfusion time regardless of an infarction site.
