Objective To evaluate the efficacy and safety of low-dose tirofiban combined with dual anti-platelet therapy in patients undergoing coronary stent implantation for acute coronary syndrome.Methods From October 2010 to July 2013,a total of 306 patients undergoing percutaneous coronary intervention (PCI) for acute coronary syndrome were enrolled and divided into 2 groups:triple anti-platelet group (156 patients) and dual anti-platelet group (150 patients).Patients in triple anti-platelet group received low-dose tirofiban with starting dose 0.4 μ g/(kg· min) and 0.1 μ g/(kg·min) after 30 min for 24-36 h on the basis of dual anti-platelet therapy.Patients in dual anti-platelet group only received dual anti-platelet therapy.Information of the bleeding time,the clotting time,the platelet count change,the major adverse cardiac events (MACE),bleeding events in both groups were observed and the efficacy and safety were evaluated.Results The rate of thrombus of stent and target vessel revascularization were 2.0％ (3/150) and 2.7％ (4/150) in dual anti-platelet group,0.6％ (1/156) and 0.6％ (1/156) in triple anti-platelet group,and there were no significant differences between two groups (P ＞ 0.05).There was no significant difference in the rate of bleeding events between two groups (P ＞ 0.05).The bleeding time and clotting time in two groups were extended at different degree,but there were no significant differences (P ＞ 0.05).Conclusions Additional use of low-dose tirofiban is effective and safe in patients undergoing coronary stent implantation for acute coronary syndrome.It could not only reduce the MACE rate but also improve the coronary blood flow.Moreover,it does not increase the bleeding events.

Objective To analyze the characteristics of Han and Uygur patients with acute myocardial infarction (AMI)of coronary artery disease and its risk factors in Kashi area.Methods The clinical data of 98 cases of Han and Uygur 152 cases with AMI (including acute ST segment elevation myocardial infarction and acute non ST segment elevation myocardial infarction)were retrospectively analyzed.And risk factors were analyzed.Results Uygur patients with AMI in hypertension,diabetes,smoking,obesity and Han patients with no significant difference(P >0.05).In Uygur patients with AMI high density lipoprotein cholesterol(HDL -C)was (1.10 ±0.36)mmol/L,which was lower than Han patients (1.41 ±0.53)mmol/L(t =6.701,P <0.05),triglyceride(TG)[(2.21 ±1.40)mmol/L] higher than Han patients[(1.76 ±0.77)mmol/L](t =6.393,P <0.05),total cholesterol and low density lipoprotein cholesterol and Han patients compared with no significant difference(P >0.05).The level of fibrinogen(FIB)in Uygur AMI patients[(4.02 ±0.84)g/L]was higher than that in Han patients[(3.69 ±0.69)g/L](t =8.420,P =0.004).Uygur patients with acute myocardial infarction coronary angiography showed multiple lesions in the majority, the involvement of blood vessels in the anterior descending branch,there was no significant difference between the Han patients(P =0.713).No obvious abnormal vessels of Han and Uygur AMI patients in coronary angiography showed no statistically significant differences(P =0.003).Conclusion Uygur patients had more history of dyslipidemia,triglyceride and fibrinogen levels were higher than the Han nationality,low density lipoprotein levels were lower than that of the Han nationality.Patients with no obvious lesion in the coronary artery were less than the Han patients.

Objective To explore the value of peripheral blood sCD146 as a long-term survival ben-efit marker in elderly patients with acute ST segment elevation myocardial infarction(ASTEMI)after PCI.Methods A total of 210 patients who were diagnosed with ASTEMI and underwent PCI in our hospital from January 2021 to July 2022 were enrolled,and according to the postopera-tive sCD146 level,they were divided into low-,medium-and high-level groups(69,65 and 76 cases respectively).All of them were followed up,with endpoint events including all cause death,cardiac death,and major adverse cardiovascular events(MACE).Kaplan-Meier survival curve was plotted to compare the cumulative survival rate of each group,and COX regression analysis was used to analyze the relationship between peripheral blood sCD146 level and prognosis.Results The mor-tality rate and MACE incidence were significantly higher in the high-level group than the low-and medium-level groups(P＜0.05).Kaplan-Meier curve analysis showed that the high-level group had obviously lower cumulative survival rate than the other two groups(P＜0.05).COX regres-sion analysis revealed that the sCD146 level in peripheral blood after PCI was independently cor-related with the occurrence of death in ASTEMI patients after PCI(OR=1.530,95％CI:1.144-2.044,P=0.004).Conclusion The peripheral blood level of sCD146 is closely related to long-term survival benefits in ASTEMI patients after PCI,and sCD146 can be used as a biomarker to evaluate their long-term survival benefits.