The Effect Of Coronary Collateral Circulation On Myocardial Reperfusion In Patients With ST-segment Elevation Acute Myocardial Infarction

Objective: To analyze the impact of coronary collateral circulation(CCC)on myocardial reperfusion injury in patients with ST-segment elevation acute myocardial infarction(STEMI)after emergency percutaneous coronary intervention(PCI).Methods:From January 2017 to May 2020,130 patients with acute ST-elevation myocardial infarction in the Department of Cardiology,Second Affiliated Hospital of Xinjiang Medical University were selected from our hospital.The onset time of these patients was within 12 hours when they were admitted to the hospital,and they had complete obstruction.Infarction-related blood vessels(IRA)were divided into non-collateral circulation group and collateral circulation group according to the results of(Rentrop’s cla)after CAG in the emergency department.Rentrop grade 0 was classified as non-collateral circulation group 97 cases;Rentrop grade ≥ 1 were classified as having collateral circulation group 33 cases.The adverse cardiovascular events during hospitalization after emergency percutaneous coronary intervention between the two groups were compared and statistically analyzed.Results: Compared with the non-collateral circulation group,the collateral circulation group had lower incidence of no-reflow,heart failure,malignant arrhythmia,and cardiogenic shock.The comparison between the two groups was statistically significant(P<0.05).Conclusion: The existence of collateral circulation can reduce the incidence of myocardial reperfusion injury and no-reflow during hospitalization,heart failure,heart failure,cardiogenic shock,and malignant arrhythmia in STEMI patients after PCI.