Publications by authors named "Geuns R"

Background: Ticagrelor monotherapy after 1-3 months of dual antiplatelet therapy (DAPT) has shown to be effective and safe after percutaneous coronary intervention (PCI), including in patients with an ST elevation myocardial infarction (STEMI). Direct omission of aspirin could further reduce bleeding complications and may reduce the incidence and expansion of intramyocardial haemorrhage (IMH), a frequent complication after revascularisation for a STEMI.

Methods: This multicentre open label pilot study randomises 200 STEMI patients within 24 hours after primary PCI and before the first subsequent dose of aspirin to ticagrelor monotherapy or ticagrelor plus aspirin for twelve months.

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Background: Elevated Lp(a) (lipoprotein[a]) is a risk marker for atherosclerotic disease, but the underlying mechanisms remain elusive. We examined the association of Lp(a) with changes in coronary atherosclerosis following intensive lipid-lowering therapy.

Methods: In the PACMAN-AMI trial (Effects of the PCSK9 Antibody Alirocumab on Coronary Atherosclerosis in Patients With Acute Myocardial Infarction), 300 patients with acute myocardial infarction were randomized to receive biweekly alirocumab 150 mg or placebo in addition to high-intensity statins.

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  • The study investigates the impact of non-culprit (NC) lesions in patients with NSTEMI compared to those with STEMI, focusing on high-risk plaque features and their influence on clinical outcomes.
  • Among 438 patients, both NSTEMI and STEMI groups showed similar prevalence of high-risk plaques, but NSTEMI patients had a higher rate of major adverse cardiovascular events (MACE) after two years.
  • The findings suggest that the presence of high-risk plaques in NC lesions is critical for dictating future cardiovascular events, indicating the need for further research on effective revascularization strategies in NSTEMI patients.
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  • * Patients in the trial receive either evolocumab or a placebo for 12 weeks, alongside high-intensity statin therapy, and are monitored for changes in plaque size and composition using advanced imaging techniques.
  • * This study is notable for being the first to assess how significant reductions in low-density lipoprotein cholesterol (LDL-C) could impact the health of non-critical coronary lesions shortly after treatment.
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  • - The study evaluated the safety and efficacy of using an upper-extremity approach for secondary access during transfemoral transcatheter aortic valve implantation (TAVI) compared to the traditional lower-extremity method, as it may reduce significant bleeding risks.
  • - Conducted between November 2022 and November 2023 in the Netherlands, the TAVI XS trial involved 238 patients with severe aortic stenosis, who were randomly assigned to either the upper or lower access groups.
  • - Results showed that the upper-extremity approach had a lower incidence of clinically relevant bleeding (4.2% vs. 13.4% for the lower extremity), suggesting it could be a safer option for patients undergoing
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Introduction: Patients with acute coronary syndrome (ACS) have high event rates related to non-culprit (NC) lesions, therefore plaque composition of these lesions is of great interest. Although marginal atherosclerotic lesions were studied extensively, more significant lesions might have more high-risk characteristics.

Aim: To compare differences in high-risk lesion characteristics between significant versus non-stenotic NC plaques in ACS and the discrepancies with chronic coronary syndrome (CCS) patients.

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  • Recurrent events after myocardial infarction (MI) often arise from non-flow limiting lesions, which may differ between sexes, prompting this study to investigate these potential differences among MI patients.
  • The study examined 420 patients, finding that female patients had longer NC lesions and smaller lumen areas and diameters, as well as thinner fibrous caps compared to male patients.
  • Despite females exhibiting more high-risk plaque characteristics, both genders experienced similar rates of major cardiovascular events at two years, suggesting the need for further research on long-term outcomes related to these differences.
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Background: The long-term impact of drug-coated balloon (DCB) angioplasty for the treatment of patients with de novo coronary artery lesions remains uncertain. We aimed to assess the non-inferiority of DCB angioplasty with rescue stenting to intended drug-eluting stent (DES) deployment for patients with de novo, non-complex coronary artery lesions.

Methods: REC-CAGEFREE I was an open-label, randomised, non-inferiority trial conducted at 43 sites in China.

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Importance: Previous studies investigated atherosclerotic changes induced by lipid-lowering therapy in extensive coronary segments irrespective of baseline disease burden (a vessel-level approach).

Objective: To investigate the effects of lipid-lowering therapy on coronary lesions with advanced atherosclerotic plaque features and presumably higher risk for future events.

Design, Setting, And Participants: The PACMAN-AMI randomized clinical trial (enrollment: May 2017 to October 2020; final follow-up: October 2021) randomized patients with acute myocardial infarction to receive alirocumab or placebo in addition to high-intensity statin therapy.

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In at least one-half of the patients with angina or ischemia and nonobstructive coronary arteries undergoing coronary function testing, coronary artery spasm (CAS) is detected. CAS is associated with an adverse prognosis regarding recurrent complaints and ischemic events. Current treatment options are mainly focused on the complaints, not on the underlying pathophysiological process.

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  • Mortality rates in patients with cardiogenic shock due to acute myocardial infarction (AMICS) remain high, prompting research into how prehospital symptom duration affects patient outcomes.
  • A study analyzed data from 1,363 AMICS patients, revealing that longer symptom durations significantly increased the 30-day mortality rates, especially for those with symptoms lasting over 24 hours.
  • The findings highlight the importance of early identification and intervention, suggesting that prolonged symptoms are a strong predictor of poor survival rates in AMICS patients, particularly those receiving mechanical circulatory support.
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Background: During transcatheter aortic valve implantation (TAVI), secondary access is required for angiographic guidance and temporary pacing. The most commonly used secondary access sites are the femoral artery (angiographic guidance) and the femoral vein (temporary pacing). An upper extremity approach using the radial artery and an upper arm vein instead of the lower extremity approach using the femoral artery and femoral vein may reduce clinically relevant secondary access site-related bleeding complications, but robust evidence is lacking.

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Coronary atherosclerosis remains a leading cause of morbidity and mortality worldwide. The underlying pathophysiology includes a complex interplay of endothelial dysfunction, lipid accumulation and inflammatory pathways. Multiple structural and inflammatory features of the atherosclerotic lesions have become targets to identify high-risk lesions.

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The femoral vein is commonly used as a pacemaker access site during transcatheter aortic valve replacement (TAVR). Using an upper arm vein as an alternative access site potentially causes fewer bleeding complications and shorter time to mobilization. We aimed to assess the safety and efficacy of an upper arm vein as a temporary pacemaker access site during TAVR.

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Background And Aims: The healthcare burden of acute chest pain is enormous. In the randomized ARTICA trial, we showed that pre-hospital identification of low-risk patients and rule-out of non-ST-segment elevation acute coronary syndrome (NSTE-ACS) with point-of-care (POC) troponin measurement reduces 30-day healthcare costs with low major adverse cardiac events (MACE) incidence. Here we present the final 1-year results of the ARTICA trial.

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Objective: Prehospital rule-out of non-ST-segment elevation acute coronary syndrome (NSTE-ACS) in low-risk patient with a point-of-care troponin measurement reduces healthcare costs with similar safety to standard transfer to the hospital. Risk stratification is performed identical for men and women, despite important differences in clinical presentation, risk factors and age between men and women with NSTE-ACS. Our aim was to compare safety and healthcare costs between men and women in prehospital identified low-risk patients with suspected NSTE-ACS.

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  • Patients who undergo FFR-guided revascularization after a myocardial infarction still face high rates of repeat major cardiovascular events, often due to nonculprit lesions identified as high-risk by optical coherence tomography (OCT).
  • The study, called PECTUS-obs, evaluates how OCT can help detect high-risk plaques in nonculprit lesions, which were defined by specific characteristics such as lipid content and plaque stability.
  • Out of 438 enrolled patients, 34% had at least one high-risk plaque, and 15.4% of those with high-risk plaques experienced recurrent major adverse cardiovascular events within a two-year period.
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Background: The frequency, characteristics, and outcomes of patients treated with high-intensity lipid-lowering therapy and showing concomitant atheroma volume reduction, lipid content reduction, and increase in fibrous cap thickness (ie, triple regression) are unknown.

Objectives: This study was designed to investigate rates, determinants, and prognostic implications of triple regression in patients presenting with acute myocardial infarction and treated with high-intensity lipid-lowering therapy.

Methods: The PACMAN-AMI (Effects of the PCSK9 Antibody Alirocumab on Coronary Atherosclerosis in Patients with Acute Myocardial Infarction) trial used serial intravascular ultrasound, near-infrared spectroscopy, and optical coherence tomography to compare the effects of alirocumab vs placebo in patients receiving high-intensity statin therapy.

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  • - Cardiogenic shock (CS) following acute myocardial infarction (AMI) leads to high rates of morbidity and mortality, with a study examining 2328 patients revealing a 30-day mortality rate of 39% and common characteristics among non-survivors.
  • - Patients who did not survive presented with lower blood pressure, higher heart rates, elevated blood lactate and glucose levels, and a greater prevalence of conditions like diabetes and prior coronary events.
  • - The study found that while a significant percentage of patients received mechanical support (mainly through intra-aortic balloon pumps) and vasoactive agents, and many underwent multivessel percutaneous coronary intervention (PCI), these treatments were administered despite limited evidence supporting their effectiveness in improving survival.
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Objectives: The very long-term mortality of off-pump and on-pump coronary artery bypass grafting (CABG) versus percutaneous coronary intervention (PCI) in a randomized complex coronary artery disease population is unknown. This study aims to investigate the impact of on-pump and off-pump CABG versus PCI on 10-year all-cause mortality.

Methods: The SYNTAX trial randomized 1800 patients with three-vessel and/or left main coronary artery disease to PCI or CABG and assessed their survival at 10 years.

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Background: P2Y12 inhibitor monotherapy is a promising novel strategy to reduce bleeding complications compared to dual antiplatelet therapy (DAPT) in patients undergoing percutaneous coronary intervention (PCI). In order to personalise treatment with DAPT based on patients' bleeding risk, we compared outcomes after PCI between P2Y12 inhibitor monotherapy and DAPT according to bleeding risk.

Methods: A search for randomized clinical trials (RCTs) comparing P2Y12 inhibitor monotherapy after a short period of DAPT to standard DAPT after PCI was performed.

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Background Little is known about changes in physical activity (PA) and sedentary behavior (SB) patterns in the acute phase of a myocardial infarction (MI). We objectively assessed PA and SB during hospitalization and the first week after discharge. Methods and Results Consecutively admitted patients hospitalized with an MI were approached to participate in this prospective cohort study.

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