Abstract: Objective To evaluate the effect of the establishment of the chest pain center(CPC) on the diagnosis and treatment process and short-term prognosis in the elderly patients with acute non-ST-elevation myocardial infarction(NSTEMI). Methods A total of 33 patients with NSTEMI who were treated in the Department of Emergency of our hospital before the construction of the CPC were enrolled as the control group, and 37 patients with NSTEMI who were treated after the construction of the CPC in April 2019 were recruited into the observation group. Diagnosis and treatment process related indicators, including time of emergency double antibody treatment, time of first medical contact to percutaneous coronary intervention(PCI), and the hospital mortality, the incidence of malignant arrhythmia, heart failure and other adverse cardiac events in two groups were observed and compared. The levels of left ventricular ejection fraction(LVEF), left ventricular end systolic volume(LVESV) and left ventricular end diastolic volume(LVEDV) before and after treatment in two groups one week after PCI were detected for evaluation of the short-term prognosis. Results There were no significant difference in the constituent ratios of the way of hospital admission, emergency PCI and elective PCI between the two groups(P> 0.05). The duration of emergency dual antiplatelet therapy in the patients with intermediate and high risk, and the duration of first medical exposure-PCI in the patients with high risk in the observation group were shorter than those in the control group(P<0.05). There were no significant difference in the LVEDV, LVESV, and LVEF at 1 week after PCI between the two groups(P> 0.05). The incidence rate of cardiac adverse events in the observation group during hospitalization was significantly lower than that in the control group(10.81% vs 27.27%, P<0.05). Conclusions The establishment of CPC can shorten the diagnosis and treatment process and improve the short-term prognosis in the elderly patients with NSTEMI.

Key words: chest pain center, acute non-ST-segment elevation myocardial infarction, diagnosis and treatment process, recent prognosis