急性冠狀動脈綜合征患者金屬裸支架、藥物洗脫支架的有效性與安全性比較研究
[Abstract]:Background Coronary atherosclerotic heart disease (CHD) is a common cardiovascular disease that seriously endangers human health. Compared with drug therapy alone, percutaneous coronary intervention (PTCA) Coronary stents have undergone different stages of development after years of technical development and clinical application. Drug-eluting stents (DES) have been developed in recent years to further improve percutaneous coronary intervention (PCI) compared with bare metal stents (BMS). Acute myocardial infarction (AMI) is a serious event in the development of coronary heart disease. Its pathological basis is usually the rupture of unstable atherosclerotic plaques, resulting in the aggregation of activated platelets in the lesion site to form acute thrombosis, and obstruction of coronary artery blood flow, resulting in acute ischemia and hypoxia of heart tissue. Coronary artery implantation of BMS and DES is an important method for the treatment of AMI, but for patients with acute ST-segment elevation myocardial infarction (STEMI) and undergoing PCI in China, BMS is effective and safe with the first and second generation drug-eluting stents (G1-DES and G2-DES). Objective: To compare the efficacy and safety of BMS, G1-DES and G2-DES in patients with STEMI who underwent emergency PCI and to provide real-world evidence for optimal clinical application of coronary stents. 1,623 consecutive patients were diagnosed as STEMI in Fuwai Hospital of Chinese Academy of Medical Sciences from April to May 2014 and underwent emergency PCI. The exclusion criteria included: (1) STEMI due to in-stent restenosis or stent thrombosis, excluding 95 patients; (2) stent placement other than BMS, G1-DES or G2-DES, or the same. 305 patients were excluded when different types of stents were placed. The final data of 1,223 patients were included. The patients were divided into three groups according to the type of stents, namely BMS group, G1-DES group and G2-DES group. Catheter events (MACE) included a combined endpoint consisting of target vessel-related myocardial infarction (TV-MI), target vessel reconstruction (TVR), target lesion reconstruction (TLR) and cardiac death, as well as the above independent endpoint events; the safety endpoint was in-stent thrombosis, which was defined as definite and highly probable by ARC in this study. After a year of follow-up, Kaplan-Meier method was used to compare the incidence of target vessel-related myocardial infarction (TV-MI), target vessel reconstruction (TVR), target lesion reconstruction (TLR), cardiac death and stent thrombosis. Multivariate Cox proportional hazard regression model and Logistic regression model were used to compare the above results. Out of 1,223 consecutive patients diagnosed with STEMI and undergoing emergency PCI, 1-year follow-up showed a significantly lower incidence of MACE events in G1-DES and G2-DES groups (20.4%, 4.2% and 4.1%, respectively, P 0.001; BMS and G1-DES, P 0.001; BMS and G2-DES, P There was no significant difference in the incidence of MACE events between G1-DES and G2-DES groups (P = 0.969). Among MACE events, the incidence of TV-MI was 2.6% (BMS), 0.3% (G1-DES) and 1.0% (G2-DES), respectively. There was a significant difference among the three groups (P = 0.017), and the post-event analysis showed that the incidence of TV-MI events in G1-DES group was lower than that in BMS group (P = 0.009). There was no significant difference between BMS group and G2-DES group (P = 0.070), and between G1-DES group and G2-DES group (P = 0.216). In addition, compared with BMS group, TVR, TLR and cardiac mortality in G1-DES and G2-DES groups were significantly reduced (TVR were 10.4%, 2.5% and 1.8%, TLR was 7.8%, 1.1% and 1.2%, cardiac mortality was 9.2%, 1.7% and 1.8%, respectively. There was no significant difference in the incidence of these events between G1-DES and G2-DES groups (P 0.458, 0.999 and 0.908, respectively). There was no difference in the incidence of stent thrombosis between the three groups within one year (P = 0.354). Kaplan-Meier curves showed that TLR-free survival and cardiac death-free survival rates were significantly higher in G1-DES and G2-DES groups within one year (P = 0.354). MultivariatCox proportional hazard regressianalysis showed that G1-DES and G2-DES decreased TVR (G1-DES, HR 0.24, 95% CI [0.11-0.50], P 0.001; G2-DES, HR = 0.40, 95% CI [0.40, 95% CI [0.27-0.58], P 0.57-0.58], P 0.001) and TLR (G1-DES, G1-DES, HR 0.24, 95% CI [0.11-0.50], P 0.001; G2-DES, HR = 0.40, HR = 0.40, 95% CI [0.27-0.58], P 0.58], P.001) and TLR (G1-DES, G1-DES, HR 0.15, 95% 0.05-0 There was no significant difference in the risk of TVR and TLR between the two groups. Logistic regression analysis showed that stent type was not a risk factor for stent thrombosis. The incidence of MACE events in BMS group was significantly higher than that in G1-DES and G2-DES groups, but there was no significant difference between G1-DES and G2-DES groups; (2) G1-DES or G2-DES could reduce the incidence and risk of TVR and TLR within one year compared with bare metal stents, but there was no clear difference between G1-DES and G2-DES. (3) There was no significant difference in the incidence and risk of in-stent thrombosis between the three groups within one year after stent placement. In addition, there was no significant difference between the three groups in the risk of cardiac death and the incidence of in-stent thrombosis. Background Acute coronary syndromes (ACS) include acute ST-segment elevation myocardial infarction (STEMI), non-ST-segment elevation myocardial infarction (NSTEMI) and unstable angina pectoris. The common pathological mechanism of ACS is that unstable plaque rupture or erosion causes thrombosis in varying degrees, which leads to acute decrease of coronary blood flow. Previous studies have reported that ACS is an independent risk factor for increased stent thrombosis compared with stable coronary artery disease. Therefore, careful selection of stent types should be made during interventional therapy for ACS. G1-DES and G2-DES should be used for ACS. The efficacy and safety of G1-DES and G2-DES in patients with ACS in China are still controversial, but there is no comparative study on the efficacy and safety of G1-DES and G2-DES in patients with ACS in China. Methods A prospective study was conducted to select consecutive patients with ACS who were admitted to Fuwai Hospital of Chinese Academy of Medical Sciences from January 2013 to December 2013 and received PCI treatment. Endovascular percutaneous transluminal angioplasty (PTCA) was performed in patients without stenting; (2) patients with stenting other than G1-DES or G2-DES, or with different types of stenting at the same time; (3) patients with non-ACS other than acute myocardial infarction or unstable angina. Data from 3,929 patients, including acute ST-segment elevation myocardial infarction, were finally included. 862 cases of myocardial infarction, 284 cases of non-ST-segment elevation myocardial infarction and 2,783 cases of unstable angina pectoris were divided into G1-DES group and G2-DES group according to the type of stent implantation. The follow-up period was 2 years, and the end-point events were as described above. The stent thrombosis reported in this study included definite and probable. Tendency score matching method was used to match 2,284 matched patients. Chi-square test, Kaplan-Meier method and multivariate Cox proportional hazard regression model were used to analyze and compare the incidence and risk factors of end-point events between the two groups. There was no significant difference in the incidence of MACE events (4.8% and 3.9% respectively, P = 0.302) between the G1-DES and G2-DES groups. TVR (5.5% and 3.5%, P = 0.019) / TLR (4.1% and 2.5%, P = 0.033) and cardiac mortality (0.5% and 1.40%, P = 0.032) were significantly different. There was no significant difference in the cumulative incidence of stent thrombosis between G1-DES and G2-DES (acute, subacute, late, very late and 2 years, respectively). Subacute in-stent thrombosis: 0.0% and 0.1%, P = 0.500; late in-stent thrombosis: 0.2% and 0.2%, P = 0.790; 2-year cumulative in-stent thrombosis: 0.7% and 0.5%, P = 0.826). Kaplan-Meier analysis showed that TLR survival rate was significantly increased (P = 0.038) in G2-DES group, but the survival rate of non-cardiogenic death was significantly decreased (P = 0.039). Case risk regression analysis showed that compared with G1-DES, (G2-DES was the protective factor (HR = 0.592,95% CI [0.370-0.947], P = 0.029) and there was no significant difference between the two groups in the risk of cardiac death and cumulative stent thrombosis (TV-MI: HR = 1.121, 95% CI [0.380-3.303], P = 0.836; and cardiac death: I IR = 2.469, 95.029). Accumulative stent thrombosis: HR = 1.197, 95% CI [0.471-3.041], P = 0.706. Study conclusions (1) There was no significant difference in MACE events between G1-DES and G2-DES in patients with acute coronary syndrome who received PCI treatment; (2) G2-DES was able to reduce the protection of target lesion reconstruction compared with G1-DES. Factors: (3) There was no significant difference between G1-DES and G2-DES in the risk of target-related myocardial infarction, cardiac death, and cumulative stent thrombosis.
【學(xué)位授予單位】:北京協(xié)和醫(yī)學(xué)院
【學(xué)位級別】:博士
【學(xué)位授予年份】:2016
【分類號】:R541.4
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