Publications by authors named "Stefan Janssens"

Background: The evaluation of myocardial ischemia in patients with aortic valve stenosis (AS) with concomitant coronary artery disease (CAD) and possible microvascular dysfunction (MVD) is challenging because fractional flow reserve (FFR) and the resting full-cycle ratio (RFR) have not been validated in this clinical setting.

Objectives: The objectives of this study in patients with AS and CAD were: 1) to describe the relationship between hyperemic and resting indexes; 2) to investigate the acute and long-term effects of aortic valve replacement (AVR) on epicardial indexes and microvascular function; 3) to assess the impact of these changes on clinical decision making; and 4) to determine FFR/RFR ischemia cutoff points in AS.

Methods: In this prospective multicentric study, we performed serial measurements of FFR and RFR and evaluated MVD by means of coronary flow reserve, the index of microvascular resistance, and microvascular resistance reserve in patients with severe AS and intermediate to severe CAD before and 6 months after AVR.

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Aims: Early evaluation of the natriuretic response is recommended to guide diuretic therapy in acute decompensated heart failure (ADHF). However, its implementation in daily practice is hampered by implementation barriers and increased time constraints. The Readily Available Urinary Sodium Analysis in Patients with Acute Decompensated Heart Failure (EASY-HF) study assessed the feasibility, efficacy and safety of a nurse-led urinary sodium-based diuretic titration protocol with the use of a point-of-care urinary sodium sensor.

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  • Atrial fibrillation (AF) is a common issue in cancer patients, and this study aims to evaluate their clinical characteristics and management, particularly focusing on antithrombotic medications.
  • The study involved 1,514 patients with recent cancer diagnoses and confirmed AF, finding high rates of cardiovascular diseases and a significant number of patients not receiving optimal anticoagulation treatment upon admission.
  • Results indicate a significant underuse of appropriate antithrombotic therapy, suggesting the necessity for improved cardiovascular assessments in the care of cancer patients with AF.
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Placental growth factor (PlGF)-2 induces angio- and arteriogenesis in rodents but its therapeutic potential in a clinically representative post-infarction left ventricular (LV) dysfunction model remains unclear. We, therefore, investigated the safety and efficacy of recombinant human (rh)PlGF-2 in the infarcted porcine heart in a randomized, placebo-controlled blinded study. We induced myocardial infarction (MI) in pigs using 75 min mid-LAD balloon occlusion followed by reperfusion.

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Aims: Compared to heart failure (HF) with reduced ejection fraction, HF with preserved ejection fraction (HFpEF), and HF with mildly reduced ejection fraction (HFmrEF) are increasing in prevalence, yet little is known about the geographic variation in patient characteristics, treatments and outcomes among these two HF phenotypes. The aim of this study was to investigate geographic differences in HFpEF and HFmrEF.

Methods And Results: We conducted an individual patient analysis of five clinical trials enrolling patients with HFpEF or HFmrEF from North America (NA), Latin America (LA), Western Europe (WE), Central/Eastern Europe and Russia (CEER), and Asia-Pacific (AP).

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  • The text indicates a correction to a previously published scientific article.
  • The correction specifically references the article's Digital Object Identifier (DOI), which is 10.3389/fcvm.2022.1024044.
  • This suggests the need for clarification or amendment in the original findings or conclusions of the article.
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Background: Excessive interhospital variation threatens healthcare quality. Data on variation in patient outcomes across the whole cardiovascular spectrum are lacking. We aimed to examine interhospital variability for 28 cardiovascular All Patient Refined-Diagnosis-related Groups (APR-DRGs).

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Objective: Heart failure (HF) is characterised by collagen deposition. Urinary proteomic profiling (UPP) followed by peptide sequencing identifies parental proteins, for over 70% derived from collagens. This study aimed to refine understanding of the antifibrotic action of spironolactone.

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Inhaled nitric oxide (NO) has been used in pediatric and adult perioperative cardiac intensive care for over three decades. NO is a cellular signaling molecule that induces smooth muscle relaxation in the mammalian vasculature. Inhaled NO has the unique ability to exert its vasodilatory effects in the pulmonary vasculature without any hypotensive side-effects in the systemic circulation.

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  • Cancer significantly increases the risk of developing atrial fibrillation (AF), prompting a study (BLITZ-AF Cancer) to gather data on antithrombotic drug usage in affected patients for better care management.
  • Conducted across six European countries, the study enrolled 1,514 patients, revealing a diverse range of underlying health conditions and cancer types; 41.5% had high CHA2DS2-VASc scores indicating a higher stroke risk.
  • Findings showed a notable increase in the use of direct oral anticoagulants (DOACs) among patients, suggesting a shift in treatment approach by cardiologists from traditional therapies like vitamin K antagonists to newer alternatives.
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Acute myocardial infarction (AMI) is a prevalent and high-mortality cardiovascular condition. Despite advancements in revascularization strategies for AMI, it frequently leads to myocardial ischemia-reperfusion injury (IRI), amplifying cardiac damage. Murine models serve as vital tools for investigating both acute injury and chronic myocardial remodeling in vivo.

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Physician-oriented online education could be a pathway to improve care for patients with heart failure, however, it is difficult to measure the impact of such education. Self-efficacy is a potential outcome measure. In this article, we develop a methodology for analyzing an educational intervention for general practitioners (GPs) using self-efficacy as a concept.

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  • Immunosuppressive treatment for heart transplant patients can lead to osteoporosis, and researchers aimed to create a urinary proteomic profile (UPP) biomarker to identify this condition using peptide fragments from bone extracellular matrix.* -
  • The study involved analyzing urine samples from a cohort of heart transplant patients, where an 18-peptide marker called OSTEO18 was developed, showing promising results in differentiating between patients with and without osteoporosis through statistical methods.* -
  • Validation of OSTEO18 indicated it is a reliable biomarker with good sensitivity and specificity, enhancing osteoporosis risk assessment in heart transplant recipients, and it is in the process of being certified for clinical use.*
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Aims: Sodium restriction was not associated with improved outcomes in heart failure patients in recent trials. The skin might act as a sodium buffer, potentially explaining tolerance to fluctuations in sodium intake without volume overload, but this is insufficiently understood. Therefore, we studied the handling of an increased sodium load in patients with heart failure with reduced ejection fraction (HFrEF).

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Background: Impella™ is increasingly used in cardiogenic shock. However, thromboembolic and bleeding events are frequent during percutaneous mechanical circulatory support (pMCS).

Objective: Therefore, we aimed to explore the optimal anticoagulation regime for pMCS to prevent thromboembolism and bleedings.

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Background: We aimed to study the incidence of acute kidney injury (AKI) in out-of-hospital cardiac arrest (OHCA) patients treated according to low-normal or high-normal mean arterial pressure (MAP) targets.

Methods: A post hoc analysis of the COMACARE (NCT02698917) and Neuroprotect (NCT02541591) trials that randomized patients to lower or higher targets for the first 36 h of intensive care. Kidney function was defined using the Kidney Disease Improving Global Outcome (KDIGO) classification.

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  • A study looked at how well artificial intelligence (AI) can help find heart problems in breast cancer patients who received a specific type of chemotherapy called anthracycline.
  • Cardiotoxicity, which means heart damage, is a big concern with this treatment, so it’s important to catch it early.
  • The AI system was found to be really good at detecting dangerous drops in heart function, which could help patients monitor their heart health without needing expensive medical tests.
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Takotsubo syndrome (TTS) is a transient left ventricle dysfunction usually caused by a stressful trigger (emotional or physical). We report the case of a 77 year-old female patient who presented with TTS caused by a pheochromocytoma, a catecholamine-producing neuroendocrine tumour. Diagnosis was facilitated by acute kidney injury prompting renal ultrasound, recurrence of TTS and symptoms of episodic palpitations, profuse sweating and labile blood pressure.

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Background: Low ocular perfusion pressure (OPP), which depends on the mean arterial pressure (MAP) and intraocular pressure (IOP), is associated with glaucoma. We studied 24-h MAP dysregulations and OPP in relation to the progression of glaucoma damage.

Methods: We retrospectively analyzed 155 normal-tension glaucoma (NTG) and 110 primary open-angle glaucoma (POAG) patients aged 18 years old followed at the University Hospital Leuven with repeated visual field tests ( n  = 7000 measures, including both eyes) who underwent 24-h ambulatory blood pressure monitoring.

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Percutaneous ventricular assist devices (pVADs) are increasingly being used because of improved experience and availability. The Impella (Abiomed), a percutaneous microaxial, continuous-flow, short-term ventricular assist device, requires meticulous postimplantation management to avoid the 2 most frequent complications, namely, bleeding and hemolysis. A standardized approach to the prevention, detection, and treatment of these complications is mandatory to improve outcomes.

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Background: Heart failure (HF) is an important health problem and guidelines recommend multidisciplinary management. The pharmacist is an important member of the multidisciplinary heart failure team, both in the hospital and community setting. This study aims to explore the perceptions of community pharmacists on their role in HF care.

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  • Dapagliflozin is shown to enhance health outcomes in heart failure patients through improved scores on the Kansas City Cardiomyopathy Questionnaire (KCCQ) in a recent study (DELIVER trial).
  • The analysis focused on how dapagliflozin treatment affected individual KCCQ items, providing insights for clinicians to communicate treatment impact.
  • Results indicated significant improvements in various KCCQ components after 8 months of dapagliflozin treatment, especially regarding symptoms like lower limb edema and sleep issues related to shortness of breath.
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Background: A new definition of metabolically healthy obesity (MHO) has recently been proposed to stratify the heterogeneous mortality risk of obesity. Metabolomic profiling provides clues to metabolic alterations beyond clinical definition. We aimed to evaluate the association between MHO and cardiovascular events and assess its metabolomic pattern.

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Background Treatment for breast cancer (BC) frequently involves radiotherapy. Guidelines recommend screening for cardiac adverse events starting 10 years after radiotherapy. The rationale for this interval is unclear.

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