Clinical Study Of Stent Balloon Expansion After In Situ During Emergency Coronary Angioplasty After STEMI

Objective To through observing the release of coronary stent during emergency coronary angioplasty after STEMI patients,The comparison between the patients with no posterior dilatation and those with stent balloon dilatation was observed.To investigate the safety and efficacy of stent balloon dilatation for STEMI patients.Thus,it can provide a reference for the operation of emergency coronary angioplasty for STEMI patients.Methods A total of 105 patients with acute st-segment elevation myocardial infarction who were hospitalized in chenzhou no.1 people’s hospital from May 2018 to May 2019 and underwent emergency PCI were randomly assignedacute st-segment elevation myocardial infarction who underwent emergency PCI in Chenzhou first people’s hospital from May 2018 to May 2019 were selected.Among them,48 cases of coronary stents during emergency PCI were treated as the control group without posterior expansion after named pressure release,including 26 males and22 females,with an average age of 61.4±9.6 years.57 cases of coronary stents were treated with a named pressure release followed by stent balloon for 3 times of named in-situ expansion,including 29 males and 28 females,with an average age of 60.6±9.6 years.General data of observation group and control group were collected in detail,Including gender,age,smoking status,complications(diabetes,hypertension,hyperlipidemia),The blood flow of TIMI immediately after the operation,and the ST segment decreased by > 50% 2 hours after the operation,Left ventricular ejection fraction(LVEF)7 days after surgery,left ventricularend-diastolic diameter(LVEDD)7 days after surgery,Intraoperative complications(coronary interlining,coronary perforation,acute thrombosis,slow or no reflow,malignant arrhythmias),Total MACE(including sudden cardiac death,non-fatal myocardial infarction,ischemic stroke)within 30 days after surgery and so on.SPSS 22.0statistical software was used to analyze the data differences of each group.Results1.There was no statistical difference in age,sex,smoking status,the criminal vascular and complications between the observation group and the control group(P > 0.05).2.There was no statistically significant difference between the observation group and the control group in grade 0,grade 1 and grade 2TIMI blood flow immediately after the operation(P > 0.05).There were statistically significant differences in TIMI blood flow level 3 between groups(P < 0.05).3.In the experimental group and the control group,the number of patients with ST segment decreased by > by 50% after 2 hours in the observation group was higher than that in the control group,and there was a statistical difference.4.Comparison of intraoperative complications between the observation group and the control group: there was no statistical difference in coronary artery perforation,coronary artery dissection,acute thrombosis,and malignant arrhythmia(P > 0.05).There was a statistical difference between slow or no reflow(P < 0.05).5.LVEDD and LVEF in the observation group were improved 7 days after surgery compared with the control group,and the difference wasstatistically significant(P < 0.05).6.Comparison of myocardial enzyme indexes between the observation group and the control group: CK and ck-mb peaks in the two groups were statistically significant(P < 0.05).Conclusion Orthotopic stent balloon dilatation during emergency PCI in STEMI patients does not increase the risk of intraoperative complications.The blood flow of TIMI immediately after the operation,the ST segment decreased 2 hours after the operation,the myocardial enzymology and the LVEF and LVEDD at 7 days all showed improvement.However,the total MACE within 30 days had no effect,and this operation was worthy of clinical discussion and application.