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Acute Coronary Syndrome, Antiplatelet Therapy, and Bleeding: A Clinical Perspective.

ABSTRACT: Inhibition of platelet function by means of dual antiplatelet therapy (DAPT) is the cornerstone of treatment of acute coronary syndrome (ACS). While preventing ischemic recurrences, inhibition of platelet function is clearly associated with an increased bleeding risk, a feared complication that may lead to significant morbidity and mortality. Since bleeding risk management is intrinsically associated with therapeutic adjustments undertaken during the whole clinical history of patients with acute coronary syndrome, single decisions taken from the very first day to years of follow-up might be decisive. This review aims at providing a clinically oriented, patient-tailored approach in reducing the risk and manage bleeding complications in ACS patients treated with DAPT. The steps in clinical decision making from the day of ACS to follow-up are analyzed. New treatment strategies to enhance the safety of DAPT are also described.

SUBMITTER: Tersalvi G

PROVIDER: S-EPMC7408729 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Acute Coronary Syndrome, Antiplatelet Therapy, and Bleeding: A Clinical Perspective.

Tersalvi Gregorio G Biasco Luigi L Cioffi Giacomo Maria GM Pedrazzini Giovanni G

Journal of clinical medicine 20200701 7

Inhibition of platelet function by means of dual antiplatelet therapy (DAPT) is the cornerstone of treatment of acute coronary syndrome (ACS). While preventing ischemic recurrences, inhibition of platelet function is clearly associated with an increased bleeding risk, a feared complication that may lead to significant morbidity and mortality. Since bleeding risk management is intrinsically associated with therapeutic adjustments undertaken during the whole clinical history of patients with acute ...[more]

PMID: 32630233

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Project description:PurposeTo assess the effect of acute coronary syndrome (ACS) patients' education on their adherence to dual antiplatelet therapy (DAPT) and on lifestyle modifications.MethodsPatients who were prescribed acetyl salicylic acid and clopidogrel DAPT within 15 days of having an ACS event were enrolled in this study. Patients were randomized into two arms: the first arm received the study intervention, which consisted of education on coronary artery disease and the importance of sustained platelet inhibition, whereas the second arm was the control group. Both arms received education on lifestyle modifications. Patients completed six visits over 1 year. At each visit, pill count was used to assess adherence to DAPT, data on lifestyle modifications were collected, and changes in weight and waist circumference were recorded. Cardiovascular risk factors were recorded at baseline and the occurrence of new events was monitored throughout the study.ResultsThere were 153 patients in Arm 1 and 168 in Arm 2. At Month 6, 99.3% of patients in Arm 1 were adherent compared with 94.4% in Arm 2 (p = 0.016). At Month 12, 303 (94.4%) patients from the overall population were adherent to DAPT and there was no significant difference between the two arms (p = 0.443). In addition, no statistically significant difference was found in mean change in weight (3 kg vs. 2 kg, p = 0.064) or mean change in waist circumference (3.5 cm vs. 2.6 cm, p = 0.071) between the two arms. There was a significant decrease in the percentage of smokers (p < 0.001) and a significant increase in the percentage of physically active patients (p < 0.001) within each arm between baseline and Month 12, but the percent change in smokers (z = 1.72, p = 0.085) and percent change in physically active patients (z = 0.76, p = 0.447) between the two arms were not significantly different. Fourteen myocardial infarctions and two strokes occurred throughout the study period.ConclusionPatient education on DAPT showed short-term effect on adherence to treatment. More effective education methods should be developed to improve long-term DAPT adherence.

Project description:BackgroundIn current clinical practice, controversy remains regarding the clinical benefits of prolonged dual antiplatelet therapy (DAPT) in acute coronary syndrome (ACS) patients facing high risks of both ischemia and bleeding ("bi-risk") following percutaneous coronary intervention (PCI). This study aimed to investigate the feasibility of identifying a group of bi-risk ACS patients after PCI using the OPT-BIRISK criteria, emphasizing extended DAPT treatment safety and efficacy beyond 12 months in these bi-risk ACS after PCI in real-world conditions.MethodsThis analysis compared extended DAPT and single antiplatelet therapy (SAPT) at 12-24 months in ACS patients undergoing PCI complicated with both ischemic and bleeding risk as defined by OPT-BIRISK criteria without premature DAPT discontinuation before 9 months or major clinical adverse events within 12 months. This was a post hoc analysis of the Optimal antiPlatelet Antiplatelet Therapy for Chinese Patients with Coronary Artery Disease (OPT-CAD) study. The main research outcome was the incidence of ischemic events within 12-24 months, which was determined as a composite of stroke, myocardial infarction, and cardiac death events. Through propensity score matching (PSM), groups were balanced. For the external validation of the OPT-BIRISK criteria to identify a bi-risk ACS patient, ischemic events, BARC 2, 3, 5 bleeding events, and BARC 3, 5 bleeding events at 5 years were analyzed.ResultsThe total number of ACS patients analyzed in this analysis was 7,049, of whom 4,146 (58.8%) were bi-risk patients and 2,903 (41.2%) were not. The frequency of ischemic events was significantly different between the two groups at 5 years (11.70% vs. 5.55%, P < 0.001), and the incidence of BARC 2,3,5 bleeding was significantly higher in the bi-risk group (6.90% vs. 4.03%, P < 0.001) than in the non-bi-risk group. Among the bi-risk patients without any clinical adverse events within 12 months that underwent extended DAPT treatment (n = 2,374, 75.7%) exhibited a lower risk of stroke at 12-24 months (1.10% vs. 2.10%, P = 0.036) relative to those that underwent SAPT (n = 763, 24.3%), while bleeding risk did not differ significantly between these groups. PSM cohort analysis results were consistent with those of overall group analyses.ConclusionIn conclusion, the findings showed that using the OPT-BIRISK criteria could help physicians identify ACS patients at a high risk of developing recurrent ischemia and bleeding episodes after PCI. Compared to antiplatelet monotherapy, a strategy of extended DAPT may offer potential benefits in lowering the risk of stroke without carrying a disproportionately high risk of serious bleeding problems among these patients who were event-free after a year of DAPT.

Dataset Information

Acute Coronary Syndrome, Antiplatelet Therapy, and Bleeding: A Clinical Perspective.

Publications

Acute Coronary Syndrome, Antiplatelet Therapy, and Bleeding: A Clinical Perspective.

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