Publications by authors named "Ignatios Ikonomidis"

Transthyretin amyloid (ATTR) cardiomyopathy mimics left ventricular hypertrophy (LVH) and has been identified as a specific cause of heart failure (HF). The aim of this study was to assess the prevalence of ATTR among patients presenting to the Emergency Department (ED) with acute HF (AHF) and LVH and explore their clinical characteristics and outcomes. Of 127 AHF patients with LVH, 95 completed the diagnostic protocol, which included monoclonal paraprotein testing and technetium-99 m pyrophosphate scintigraphy.

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  • Cardiac resynchronization therapy (CRT) enhances left ventricular function in heart failure patients, but its mechanisms remain partly unclear; this study aimed to investigate these mechanisms using 2D speckle tracking echocardiography (2D-STE).
  • The study involved 46 patients who underwent CRT and evaluated their cardiac performance at baseline and post-CRT implementation through 2D-STE and a 6-minute walk test, observing a 48% response rate at 6 months, particularly in those with dilated cardiomyopathy.
  • Optimizing CRT by adjusting the activation timing of the ventricular electrodes was found to significantly improve left ventricular function, with improvements in effective stroke volume and rotational mechanics serving as key indicators of successful therapy
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Background/objectives: To investigate the potential association between the endothelial dysfunction and arterial stiffness with retinal changes observed through optical coherence tomography (OCT) and OCT-angiography (OCT-A) in patients with retinal vein occlusion (RVO).

Methods: Participants in this cross-sectional study were 28 patients with RVO. The demographic and clinical characteristics of all participants were recorded.

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Transesophageal echocardiography (TEE) is a vital diagnostic tool in clinical practice, particularly in transcatheter interventions where it aids in both pre-operative planning and intra-operative guidance. Traditional TEE probes often require general anesthesia due to patient discomfort. However, the development of miniaturized TEE probes presents a promising alternative, enabling routine examinations and interventions with minimal sedation.

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  • Polycystic Ovarian Syndrome (PCOS) is a widespread endocrine disorder in women of reproductive age, marked by symptoms like excess androgens, irregular ovulation, and cystic ovaries.
  • PCOS not only impacts reproductive health but also poses long-term risks for heart and metabolic issues, leading to conditions like arterial stiffness and potential cardiovascular disease.
  • The review explores the causes of PCOS, its connection to insulin resistance and cardiovascular health, along with diagnostic challenges and treatment options, emphasizing the need for a holistic approach to manage both reproductive and cardiometabolic health.
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  • The study investigates whether carotid-to-femoral pulse wave velocity (PWV), a measure of arterial stiffness, can predict cardiovascular risks beyond the SCORE2 risk score in individuals without existing atheromatosis.
  • Over a 6-year follow-up of 747 participants, results show that higher PWV is an independent predictor of first cardiovascular events (like strokes and heart attacks) and enhances the predictive power of SCORE2.
  • The findings suggest that including PWV in risk assessments may significantly improve the identification of individuals at risk for major adverse cardiovascular events (MACE), validating its importance in cardiovascular health monitoring.
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Diabetes mellitus (DM) is a prevalent disease in the general population and also a well-established risk factor for the development of ischemic stroke. Patients who have been diagnosed with diabetes have a 20% higher risk for developing ischemic stroke in comparison to non-diabetic individuals. The aim of the current systematic review is to provide the latest evidence regarding the association between antidiabetic treatment and the prevention of ischemic stroke.

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  • The study aimed to explore the relationship between endothelial glycocalyx damage and arterial stiffness with retinal changes in patients with type 2 diabetes mellitus (DM) using advanced imaging techniques like OCT and OCT-A.
  • Involving 65 patients with DM and 42 control participants, a variety of clinical examinations were conducted, including measuring microvessel characteristics and assessing arterial stiffness.
  • Key findings indicate that patients with DM had increased endothelial glycocalyx damage and arterial stiffness, which were linked to significant changes in retinal structures, including increased foveal avascular zone and diabetic macular edema.
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Patients with SARS-CoV-2 infection carry an increased risk of cardiovascular disease encompassing various implications, including acute myocardial injury or infarction, myocarditis, heart failure, and arrhythmias. A growing volume of evidence correlates SARS-CoV-2 infection with myocardial injury, exposing patients to higher mortality risk. SARS-CoV-2 attacks the coronary arterial bed with various mechanisms including thrombosis/rupture of preexisting atherosclerotic plaque, de novo coronary thrombosis, endotheliitis, microvascular dysfunction, vasculitis, vasospasm, and ectasia/aneurysm formation.

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Clinical studies have previously established the role of olive products in cardiovascular disease (CVD) prevention, whilst the identification of the responsible constituents for the beneficial effects is still pending. We sought to assess and compare the cardioprotective potential of oleuropein (OL), hydroxytyrosol (HT), oleocanthal (OC) and oleanolic Acid (OA), regarding Ischemia/Reperfusion Injury (IRI) and CVD risk factors alleviation. The scope of the study was to design a potent and safe combinatorial therapy for high-cardiovascular-risk patients on a bench-to-bedside approach.

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Psoriasis predisposes to cardiovascular dysfunction. We investigated whether glycocalyx dietary supplement (GDS), which contains glycosaminoglycans and fucoidan, improves endothelial glycocalyx and arterial stiffness in psoriatic patients. Fifty participants with psoriasis under biological agents were randomly assigned to GDS (n = 25) or placebo (n = 25) for 4 months.

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Backround: Metabolic-dysfunction Associated Steatotic Liver Disease (MASLD) has been associated with increased cardiovascular risk. The aim of this Randomized Double-blind clinical Trial was to evaluate the effects of coenzyme-Q10 supplementation in patients with MASLD in terms of endothelial, vascular and myocardial function.

Methods: Sixty patients with MASLD were randomized to receive daily 240 mg of coenzyme-Q10 or placebo.

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  • The study aimed to evaluate how semaglutide affects vascular and liver function in type 2 diabetes (T2DM) and nonalcoholic fatty liver disease (NAFLD) patients.
  • A total of 75 subjects participated, with 50 receiving semaglutide and 25 receiving a different treatment; assessments were made at 4 and 12 months post-treatment.
  • Results showed that semaglutide significantly improved liver health and vascular markers compared to the control, indicating beneficial effects in managing both arterial stiffness and liver fibrosis in these patients.
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The association of obesity with right ventricular function and the interplay between right heart and pulmonary circulation is incompletely understood. We evaluate the role of obesity as a determinant of right ventricular-pulmonary artery coupling (RVAC). We retrospectively studied consecutive subjects without overt cardiovascular or pulmonary disease.

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Transoesophageal echocardiography (TOE) is a well-established and valid imaging modality, providing more accurate and of higher quality information than transthoracic echocardiography (TTE) for several specific diagnoses and recently a useful guide of an increasing number of catheter-based and surgical interventions. The present paper represents an effort by the Echocardiography Working Group (WG) of the Hellenic Society of Cardiology to state the essential steps of the TOE exam performed beyond the echo lab: a) in the operating rooms intraoperatively during either transcatheter interventions, or cardiothoracic surgery and b) in the intensive care unit for critically ill patients' monitoring. This paper includes information and tips and tricks about the pre-procedural evaluation, the procedural echocardiographic guidance, and post-procedural evaluation of the result and potential complications.

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Transoesophageal echocardiography (TOE) is a well-established imaging modality, providing more accurate and of higher quality information than transthoracic echocardiography (TTE) for a wide spectrum cardiac and extra-cardiac diseases. The present paper represents an effort by the Echocardiography Working Group (WG) of the Hellenic Cardiology Society to state the essential steps of the typical TOE exam performed in echo lab. This is an educational text, describing the minimal requirements and the preparation of a meticulous TOE examination.

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Background: Mitral annular disjunction (MAD) refers to the arrhythmic mitral valve prolapse (MVP) syndrome associated with ventricular arrhythmias and sudden cardiac death. Although the pathophysiology of this disease is still under investigation, specific imaging criteria that establish the diagnosis have been recognized. In this article, we demonstrate most of these criteria using three-dimensional transthoracic echocardiography (3D-TTE) and provide added value in the management of MAD syndrome.

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: Glucagon-like peptide-1 receptor agonists (GLP-1RA) and sodium-glucose cotransporter-2 inhibitors (SGLT-2i) are cardioprotective drugs. We investigated their effects on left atrial function, a major determinant of cardiac diastolic dysfunction in type 2 diabetes mellitus. We also explored the association of changes in arterial stiffness with those of the LA strain after treatment.

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Inflammatory responses in small vessels play an important role in the development of cardiovascular diseases, including hypertension, stroke, and small vessel disease. This involves various complex molecular processes including oxidative stress, inflammasome activation, immune-mediated responses, and protein misfolding, which together contribute to microvascular damage. In addition, epigenetic factors, including DNA methylation, histone modifications, and microRNAs influence vascular inflammation and injury.

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The effect of different diet patterns on psoriasis (PSO) and psoriatic arthritis (PSA) is unknown. Τhe aim of our study was to evaluate the effectiveness of a Mediterranean diet (MD) and Ketogenic diet (KD), in patients with PSO and PSA. Twenty-six patients were randomly assigned to start either with MD or KD for a period of 8 weeks.

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Objective: Obesity and arterial hypertension (AH) in children represent well-recognized risk factors for cardiovascular (CV) events during adult life. We investigated any changes regarding several CV risk (CVR) factors in children after a 10-year follow-up period.

Methods: A cohort of 143 healthy children, elementary/high school students, 6-16 years old, was initially evaluated in 2010-2011 regarding CVR factors [obesity, blood pressure (BP), aortic stiffness (PWV), lipid profile] plus food habits/sports activity.

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Background: Currently available injectable drugs that target proprotein convertase subtilisin/kexin type 9 (PCSK9) reduce serum LDL cholesterol and improve cardiovascular outcomes. This phase 2 study assessed NNC0385-0434, an oral PCSK9 inhibitor, in individuals receiving oral lipid-lowering therapy.

Methods: In this randomised, double-blind, placebo-controlled and active-controlled trial, 42 research sites across seven countries (Belgium, Germany, Greece, Japan, the Netherlands, Poland, and the USA) recruited individuals with established atherosclerotic cardiovascular disease (aged ≥40 years) or at high risk of atherosclerotic cardiovascular disease (aged >50 years), who had LDL cholesterol concentration of at least 1·8 mmol/L and were receiving maximum tolerated statins and stable lipid-lowering therapy.

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Olive is rich in polyphenols such as hydroxytyrosol (HT) that have antioxidative and anti-inflammatory effects. In this study, we examined the short-term effects of olive oil extract (OE) enriched with HT on left atrial function, left ventricular (LV) function, and arterial elastic properties in patients with chronic coronary artery disease (CAD). Sixty-one patients with chronic CAD were enrolled.

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