Publications by authors named "Marc Claeys"

Article Synopsis
  • Recent guidelines advocate for quick initiation of lipid-lowering therapy (LLT) in patients with acute coronary syndromes (ACS) to achieve significant reductions in LDL cholesterol levels.
  • A European study involving 286 ACS patients evaluated the effectiveness of two LLT strategies: high-intensity statin monotherapy (mono-HIS) and a combination of high-intensity statins with ezetimibe (combo-HIS).
  • Findings showed that while LDL-c targets were met in under half of the patients, combo-HIS was linked to a significantly greater reduction in LDL-c levels compared to mono-HIS, suggesting its potential for more effective management in post-ACS care.*
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Aims: To assess the impact of COVID-19 related public containment measures during recurrent COVID-19 waves on hospital admission rate for acute myocardial infarction (AMI).

Methods And Results: Clinical characteristics, reperfusion therapy modalities, COVID-19 status and in-hospital mortality of consecutive AMI patients who were admitted in a regional AMI network were recorded during one year starting in March 2020 and were compared with the year before. The COVID-19 study period encompassed two waves: the first in March-May 2020 and the second in October-December 2020.

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Background: Evidence-based recommendations for antithrombotic treatment in patients who have an indication for oral anticoagulation (OAC) after transcatheter edge-to-edge mitral valve repair (TEER) are lacking.

Aims: To compare bleeding and thrombotic risk for different antithrombotic regimens post-TEER with MitraClip in an unselected population with the need for OACs.

Methods: Bleeding and thrombotic complications (stroke and myocardial infarction) up to 3 months after TEER with mitraclip were evaluated in 322 consecutive pts with an indication for OACs.

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Aim: Recent guidelines recommend the use of a short 0-1h high sensitive cardiac troponin (hs-cTn) algorithm in patients presenting with chest pain at the emergency department (ED). This retrospective observational study evaluates the safety and effectiveness of the new 0-1h hs-cTn I protocol in comparison with the standard 0-3h cTn I protocol for the diagnosis of acute myocardial infarction (AMI).

Methods: A total of two times 100 consecutive chest pain patients presenting at the ED in November/December 2018 (standard 0-3h cTn I group) and in November/December 2020 (short 0-1h hs-cTn I group) were enrolled.

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Objectives: This study aimed to assess discordance between results of instantaneous wave-free ratio (iFR), fractional flow reserve (FFR), and intravascular ultrasound (IVUS) in intermediate left main coronary (LM) lesions, and its impact on clinical decision making and outcome.

Methods: We enrolled 250 patients with a 40%-80% LM stenosis in a prospective, multicenter registry. These patients underwent both iFR and FFR measurements.

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Article Synopsis
  • Patients who have experienced acute coronary syndrome (ACS) are at high risk for recurrent cardiovascular events, particularly shortly after the initial event.
  • The relationship between lowering low-density lipoprotein cholesterol (LDL-C) levels and reducing cardiovascular risks post-ACS has led to guidelines advocating for targeted lipid-lowering therapy (LLT), but many patients do not receive adequate treatment.
  • A new approach suggests aggressively starting a combined treatment of high-intensity statins and ezetimibe immediately after ACS, along with mentioning innovative treatments like PCSK9 inhibitors, while also addressing barriers to effective patient care.
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In 2019, a total of 70 original scientific papers or reviews were published in Acta Cardiologica. In this paper, we focus on the 10 best papers that we selected based upon the innovative character and/or upon the clinical relevance of their research. In different domains of cardiology, we highlight the most important findings from these 10 best research papers.

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Introduction: Different methods are used for atrial fibrillation (AF) cycle length (CL) measurement with variable results. Previous studies of pulmonary vein (PV) CL measurement showed contradictory results on predicting PV isolation (PVI) efficacy. A novel simple method of measuring the average of 10 consecutive Fastest Atrial Repetitive Similar morphology signal (FARS )-CL to characterize local atrial activity rate was evaluated prospectively.

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Background: The study aims to assess real-life short- and long-term outcomes of patients undergoing primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI) complicated with cardiogenic shock (CS). Outcome after left main (LM) PCI is of particular interest.

Methods: Procedural, 30-day, and >30-day mortality rates were assessed in 2744 CS-STEMI patients enrolled between 2012 and 2019 in a nationwide registry involving 49 centers.

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During the ESC congress in September 2020, the new ESC guidelines were presented and are available on the ESC website. The new guidelines describe management recommendations on following cardiovascular diseases: non-STE ACS, adult congenital heart disease, sports cardiology and atrial fibrillation. The present document gives a summary of these guidelines and highlights the most important recommendations and changes in the management of these diseases.

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The present study aims to assess the clinical and hemodynamic impact of percutaneous edge-to-edge mitral valve repair with MitraClip in patients with atrial functional mitral regurgitation (A-FMR) compared with ventricular functional mitral regurgitation (V-FMR). Mitral regurgitation (MR) grade, functional status (New York Heart Association class), and major adverse cardiac events (MACE; all-cause mortality or hospitalization for heart failure) were evaluated in 52 patients with A-FMR and in 307 patients with V-FMR. In 56 patients, hemodynamic assessment during exercise echocardiography was performed before and 6 months after intervention.

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The cardiovascular system is significantly affected in coronavirus disease-19 (COVID-19). Microvascular injury, endothelial dysfunction, and thrombosis resulting from viral infection or indirectly related to the intense systemic inflammatory and immune responses are characteristic features of severe COVID-19. Pre-existing cardiovascular disease and viral load are linked to myocardial injury and worse outcomes.

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Background: Functional mitral regurgitation (FMR) can be subclassified on the basis of its proportionality relative to left ventricular (LV) volume and function, indicating potential differences in underlying etiology. The aim of this study was to evaluate the association of FMR proportionality with FMR reduction, heart failure hospitalization and mortality after transcatheter edge-to-edge mitral valve repair (TEER).

Methods: This multicenter registry included 241 patients with symptomatic heart failure with reduced LV ejection fraction treated with TEER for moderate to severe or greater FMR.

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Background: Percutaneous coronary intervention (PCI) is increasingly performed in significant left main (LM) lesions. Left untreated, the prognosis is poor, but PCI and coronary bypass surgery (CABG) behold risks as well. Additional long-term outcome data might guide future treatment decisions.

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Aims: Important controversies remain concerning the determinants of life-threatening arrhythmias during ST-segment elevation myocardial infarction (STEMI) and their impact on late adverse events. This study sought to investigate which factors might facilitate ventricular tachycardia (VT) and ventricular fibrillation (VF), in a homogeneous population of anterior STEMI patients defined by abrupt left anterior descending coronary artery (LAD) occlusion and no collateral flow.

Methods And Results: The 967 patients, who entered into the CIRCUS (Does Cyclosporine ImpRove Clinical oUtcome in ST elevation myocardial infarction patients) study, were assessed for further analysis.

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Aims: Quality indicators (QIs) are tools to improve the delivery of evidence-base medicine. In 2017, the European Society of Cardiology (ESC) Association for Acute Cardiovascular Care (ACVC) developed a set of QIs for acute myocardial infarction (AMI), which have been evaluated at national and international levels and across different populations. However, an update of these QIs is needed in light of the accumulated experience and the changes in the supporting evidence.

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The current study assessed the effect of mitral regurgitation (MR) on thrombotic risk in nonrheumatic atrial fibrillation (AF). AF carries a thrombotic risk related to left atrial blood stasis. The prevalence of atrial thrombosis, defined as the presence of left atrial appendage thrombus and/or left atrial spontaneous echo contrast grade >2, was determined in 686 consecutive nonrheumatic AF patients without (adequate) anticoagulation scheduled for transesophageal echocardiography before electrical cardioversion and was related to the severity of MR adjusted for the CHADS-VASc score.

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Background: Hamman's sign is a rare phenomenon. Louis Hamman described this pathognomonic clicking chest noise in association with pneumomediastinum in 1937. This typical noise can also be present in left-sided pneumothorax.

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Aims: Smoking is linked to disease and survival in the general and transplant population. We studied the smoking history, disease and survival of patients after heart transplantation.

Methods: A total of 130 patients who underwent heart transplantation between 1995 and 2019 received a questionnaire to document their smoking history.

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