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Impact of pre-treatment with Acetylsalicylic acid on the severity of a first Myocardial Infarction in diabetic patients
Session:
Painel 6 - Doença Coronária 7
Speaker:
Ana Rita Moura
Congress:
CPC 2020
Topic:
E. Coronary Artery Disease, Acute Coronary Syndromes, Acute Cardiac Care
Theme:
13. Acute Coronary Syndromes
Subtheme:
13.5 Acute Coronary Syndromes – Prevention
Session Type:
Posters
FP Number:
---
Authors:
Ana Rita Moura; Mariana Saraiva; Nuno Craveiro; Kevin Domingues; Vitor Paulo Martins; on behalf of the National Registry of Acute Coronary Syndrome of the Portuguese Society of Cardiology investigators
Abstract
<p><strong>Introduction</strong>: Diabetes Mellitus (DM) is one of the main risk factors for cardiovascular disease (CVD). Guidelines on the use of acetylsalicylic acid (ASA) for primary prevention of CVD in this population are conflicting. A potential reduction in the severity of a first episode of Acute Myocardial Infarction (AMI) could be seen has an additional argument for the use of ASA in primary prevention.</p> <p><strong>Aim</strong>: To evaluate the impact of prior intake of ASA on the presentation, severity and short-term prognosis of AMI in diabetic patients without history of CVD.</p> <p><strong>Methods</strong>: Retrospective analysis of diabetic patients without previous evidence of CVD diagnosed with type 1 AMI between January 2002 and December 2018, inserted in a multicentric registry of acute coronary syndromes. Patients were dichotomized according to whether or not they were taking ASA prior to the index event. Groups were compared according to clinical, analytical and imaging endpoints.</p> <p><strong>Results: </strong>A total of 2596 patients were included, predominantly men (66.4%), with a mean age of 68±12 years old. Patients on ASA (19.7%) were significantly older (71±10 vs. 67±12, p<0.001) and had a higher prevalence of hypertension (89.2% vs 77.9%, p<0.001), dyslipidaemia (69.8% vs. 61.1%, p<0.001) and chronic kidney disease (10.6% vs. 4.9%, p<0.001). Overall, there was a lower prevalence of AMI with ST-segment elevation (36.5% vs. 50.8%, p<0.001) in patients on ASA. However, the same group of patients had a significantly higher probability of evolution in Killip class > I (25.4% vs. 17.0%, p<0.001), a higher median BNP elevation (315 [126-623] vs. 166 [64-431], p<0.001); and a lower average ejection fraction upon discharge (49.0±12 vs. 51±12, p=0.011). Patients on prior regular intake of ASA also had a higher prevalence of multivessel disease (38.4% vs. 28.9%, p<0.001) and multiple significant stenosis (70.2% vs. 61.7%, p<0.001). There was no significant difference regarding the percentage of electrical complications (2.3% vs. 1.2%, p=0.06), use of intra-aortic balloon pump (1.0 vs. 0.9%, p=0.74) and in-hospital death (3.0% vs. 2.4%, p=0.46). In a logistic regression model adjusted for age, sex, comorbidities and previous medication as variates, prior ASA intake was an independent predictor of a lower rate of AMI with ST-segment elevation (ExpB -0.34; 95% CI, 0.57-0.89; p=0.003). On the contrary, when adjusted to these variables, prior ASA intake was not an independent predictor of higher BNP (p=0.13) or higher probability of multivessel disease (p=0.22) or presence of ≥1 significant stenosis (p=0.31).</p> <p><strong>Conclusions</strong>: In this population of diabetic patients with a first episode of ACS, prior use of ASA in the context of primary prevention was associated with a significant lower rate of ST-segment elevation myocardial infarction.</p>
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