Abstract: Objective  To investigate the effects of continuous improvement of chest pain center on key indicators of direct percutaneous coronary intervention (PPCI)  in patients with acute ST segment elevation myocardial infarction (STEMI).Methods  A total of 90 patients with acute STEMI who underwent PPCI in our hospital from December 2017 to November 2018 were enrolled. Of which, 46 patients treated in the period of December 2017May 2018 were selected as control group, and 44 patients treated in the period of JuneNovember 2018 were selected as observation group. The first ECG acquisition time, WeChat transmission ratio, bypass emergency and coronary heart disease intensive care unit (CCU) ratio, and gateball expansion (DtoB) time were compared between two groups. Results  The first ECG acquisition time and DtoB time in observation group were lower than those in  control group (P<0.05); WeChat transmission ratio, bypass emergency departmentand CCU ratio in observation group were higher than those in control group (P<0.05). Conclusion  Continuous improvement of the chest pain center can increase the WeChat transmission ratio, bypass emergency department and CCU ratio of STEMI patients, and shorten the first ECG acquisition time and DtoB time, which can win time for further treatment of STEMI patients.

Key words: coronary disease, chest pain, electrocardiography, WeChat transmission; , ttransportation of patients