Differential effects of dual antiplatelet therapy in patients presented with acute coronary syndrome vs. stable ischaemic heart disease after coronary artery bypass grafting

2020 ◽  
Author(s):  
Ki Hong Choi ◽  
Young Bin Song ◽  
Dong Seop Jeong ◽  
Yong Ho Jang ◽  
David Hong ◽  
...  
Keyword(s):  
Acute Coronary Syndrome ◽  
Heart Disease ◽  
Coronary Artery ◽  
Antiplatelet Therapy ◽  
Lower Risk ◽  
Dual Antiplatelet Therapy ◽  
Artery Bypass ◽  
Cardiovascular Death ◽  
Bypass Grafting ◽  
Coronary Syndrome

Abstract Aims The current study sought to evaluate whether long-term clinical outcomes according to the use of dual antiplatelet therapy (DAPT) or single antiplatelet therapy (SAPT) differed between acute coronary syndrome (ACS) and stable ischaemic heart disease (SIHD) patients who underwent coronary artery bypass grafting surgery (CABG). Methods and results Between January 2001 and December 2017, 3199 patients with ACS (55.3%) and 2583 with SIHD (44.7%) who underwent isolated CABG were enrolled. The study population was stratified using DAPT or SAPT in ACS patients and SIHD patients. The primary outcome was a cardiovascular death or myocardial infarction (MI) at 5 years. After CABG, DAPT was more frequently used in patients with ACS than in those with SIHD [n = 1960 (61.3%) vs. n = 1313 (50.8%), P < 0.001]. Among patients with ACS, the DAPT group showed a significantly lower risk of cardiovascular death or MI at 5 years than the SAPT group [DAPT vs. SAPT, 4.0% vs. 7.8%, hazard ratio (HR) 0.521, 95% confidence interval (CI) 0.339–0.799; P = 0.003]. In contrast, among patients with SIHD, there was no significant difference in the rate of cardiovascular death or MI at 5 years between the use of DAPT and SAPT (4.0% vs. 4.0%, HR 0.991, 95% CI 0.604–1.626; P = 0.971). These findings were robust to multiple sensitivity analyses and competing risk analysis. In the subgroup analysis, the use of DAPT was associated with a significantly lower risk of cardiovascular death or MI among SIHD patients with a previous percutaneous coronary intervention (PCI), with a significant interaction between the use of DAPT and PCI history (interaction P = 0.011). Conclusion Among ACS patients who underwent CABG, the use of DAPT was associated with lower cardiovascular death or MI than the use of SAPT, but this was not the case in SIHD patients. Trial registration ClinicalTrials.gov, NCT03870815.

scholarly journals Timing of dual antiplatelet therapy in acute coronary syndrome: a problem of coronary artery bypass grafting accessibility for patients

2020 ◽  
Vol 25 (8) ◽  
pp. 3812
Author(s):  
T. S. Golovina ◽  
Yu. N. Neverova ◽  
R. S. Tarasov
Keyword(s):  
Acute Coronary Syndrome ◽  
Coronary Artery ◽  
Antiplatelet Therapy ◽  
Coronary Artery Bypass ◽  
Dual Antiplatelet Therapy ◽  
Artery Bypass ◽  
St Segment Elevation ◽  
Coronary Syndrome ◽  
St Segment ◽  
Elevation Acute Coronary Syndrome

The feasibility of dual antiplatelet therapy as early as possible in patients with ST-segment elevation acute coronary syndrome, where percutaneous coronary intervention is recommended, has been proven: it improves treatment outcomes by reducing the risk of adverse ischemic events, including stent thrombosis and myocardial infarction.This article provides a detailed analysis of the evidence data and current recommendations on the validity and timing of dual antiplatelet therapy for acute coronary syndrome. The emphasis is made on the controversy regarding the early dual antiplatelet therapy in non-ST-segment elevation acute coronary syndrome. The rationale for using dual antiplatelet therapy only after coronary angiography and determining the revascularization strategy is described, which should increase the accessibility of coronary artery bypass graft surgery for patients.

ANTIPLATELET THERAPY AND SECONDARY PROPHYLAXIS AFTER CORONARY BYPASS SURGERY IN ACUTE CORONARY SYNDROME

2021 ◽  
pp. 45-51
Author(s):  
Jalilov A.K. ◽  
Ibragimov R.G.
Keyword(s):  
Myocardial Infarction ◽  
Acute Coronary Syndrome ◽  
Coronary Artery ◽  
Coronary Artery Bypass Grafting ◽  
Antiplatelet Therapy ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Grafting ◽  
Artery Bypass Grafting ◽  
Coronary Syndrome

Antiplatelet therapy with aspirin and clopidogrel has clear advantages in reducing serious adverse cardiovascular events and mortality following acute coronary syndrome. Although these drugs may pose an additional risk of bleeding in the small percentage of acute coronary syndrome patients who will undergo coronary artery bypass grafting, the benefits are vastly superior, and most bleeding can be reduced, if possible, by delaying coronary artery bypass grafting. Short-acting anticoagulants can be administered flexibly, allowing platelet function to be restored after clopidogrel is discontinued. The postoperative bleeding time may clarify the need for platelet transfusion in case of bleeding. Coronary artery bypass grafting without the use of a heart-lung machine may offer some benefits by avoiding heparinization and the inflammatory response associated with bypass surgery. Secondary prophylaxis with antiplatelet therapy, beta-blockers, lipid-lowering therapy, and ACE inhibitors or angiotensin-converting enzyme inhibitors is critical to the long-term success of revascularization. In this regard, it should be borne in mind that regardless of the method of revascularization, patients with acute coronary syndrome are characterized by the clinical benefit of taking antiplatelet agents such as aspirin and clopidogrel, since these drugs reduce the risk of serious adverse events. On the other hand, antiplatelet agents also increase the risk of bleeding in patients who will eventually undergo coronary artery bypass grafting. However, scientists indicate that in most cases, the benefits of early initiation of antiplatelet therapy outweigh the potential risks [1]. In addition, the beneficial effects of aspirin and clopidogrel in acute coronary syndrome are additive. In the study of clopidogrel, indicated for the prevention of recurrence of unstable angina and non-ST-segment elevation myocardial infarction, patients taking both clopidogrel and aspirin were less likely to die of cardiac death, non-fatal myocardial infarction, or stroke at 30 days and 1 year compared with patients who took only aspirin [22]. All these studies confirm that antiplatelet therapy with aspirin and clopidogrel should be carried out in the early stages of acute coronary syndrome. In patients with ST-segment elevation myocardial infarction, clopidogrel improves outcomes in addition to aspirin. In a trial of clopidogrel and metoprolol for myocardial infarction, clopidogrel, in addition to aspirin, was associated with a significant reduction in death, re-heart attack, or stroke compared with aspirin alone [14].

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