Publications by authors named "Vassilikos V"

Objective: Treating iron deficiency (ID) with ferric carboxymaltose (FCM) in patients with heart failure with reduced ejection fraction (HFrEF) enhances morbidity, quality of life (QoL), and exercise capacity.

Methods: In the presented single-center, prospective follow-up study, symptomatic patients with HFrEF with ID and CIEDs scheduled for IV FCM were followed up for 12-months. Arrhythmic activity was evaluated from CIEDs and non-invasive markers from Holter recordings before and after FCM.

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Purpose: Heart failure (HF) and atrial fibrillation (AF) are highly prevalent in hemodialysis. They are well-known significant modifiers of the disease associations with cardiovascular outcomes, but there is a lack of evidence regarding the effects of HF and AF on cardiorespiratory fitness. This study is the first to examine the possible association of the presence of HF and AF with exercise intolerance in patients undergoing hemodialysis.

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In the context of the global burden of cardiovascular disease, the development of novel, patient-targeted diagnostic and therapeutic strategies is of paramount importance. Acute coronary syndromes (ACS) comprise a subset of cardiovascular disease, with constantly increasing prevalence requiring urgent attention. Flow-mediated dilatation (FMD), a noninvasive method for the evaluation of endothelial function, has been previously implemented in patients with ACS.

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Background: The precise triggers for atherosclerotic plaque rupture and the underlying pathophysiology of coronary thrombogenesis remain elusive. Polymorphonuclear neutrophils, particularly their formation of neutrophil extracellular traps (NETs), have garnered attention in the context of coronary atherothrombosis. This study sought to explore the association of NETs burden with clinical and angiographic characteristics in ST-elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (pPCI) and thrombus aspiration (TA).

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Article Synopsis
  • * Diagnostic tests indicated that the patient had heart failure with reduced ejection fraction and chronic kidney disease.
  • * Daily hemodialysis sessions led to the restoration of sinus rhythm, highlighting how the removal of uremic toxins may help in managing AIVR, which usually has a favorable prognosis.
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Background: Left atrial (LA) fibrosis has been shown to be associated with atrial fibrillation (AF) recurrence. Beat-to-beat (B2B) index is a non-invasive classifier, based on B2B P-wave morphological and wavelet analysis, shown to be associated with AF incidence and recurrence. In this study, we tested the hypothesis that the B2B index is associated with the extent of LA low-voltage areas (LVAs) on electroanatomical mapping.

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Despite advancements in algorithms concerning the management of cardiogenic shock, current guidelines still lack the adequate integration of mechanical circulatory support devices. In recent years, more and more devices have been developed to provide circulatory with or without respiratory support, when conservative treatment with inotropic agents and vasopressors has failed. Mechanical circulatory support can be contemplated for patients with severe, refractory, or acute-coronary-syndrome-related cardiogenic shock.

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  • * Follow-up over approximately 29 months revealed that ILRs helped establish diagnoses in significant portions of these patients, particularly detecting issues like atrial fibrillation in those with a history of cryptogenic stroke.
  • * The findings suggest that ILRs not only aid in diagnosis but also lead to changes in treatment strategies for around one-fourth of the patients, making them a valuable tool in cardiac evaluations.
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Background: Heart failure (HF), a global health challenge, requires innovative diagnostic and management approaches. The rapid evolution of deep learning (DL) in healthcare necessitates a comprehensive review to evaluate these developments and their potential to enhance HF evaluation, aligning clinical practices with technological advancements.

Objective: This review aims to systematically explore the contributions of DL technologies in the assessment of HF, focusing on their potential to improve diagnostic accuracy, personalize treatment strategies, and address the impact of comorbidities.

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Background: A coronary artery aneurysm (CAA) is an abnormal dilation of a coronary artery segment often accompanied by coronary artery fistula (CAF), leading to communication between a coronary artery and a cardiac chamber or a part of the coronary venous system. Both CAAs and CAFs can present with symptoms and signs of myocardial ischemia and infarction.

Case Presentation: We describe the case of a 46-year-old woman with non-ST-elevation myocardial infarction (NSTEMI) caused by a "giant" CAA.

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  • - This study examines how cardiorespiratory fitness differs in hemodialysis patients after 2-day versus 3-day interdialytic intervals, with findings showing that the longer interval (3 days) leads to worse fitness levels primarily due to fluid buildup.
  • - Impaired cardiorespiratory fitness is a crucial predictor of mortality risks in hemodialysis patients, making this research vital as it focuses on a common issue faced by individuals receiving thrice-weekly hemodialysis.
  • - The research involved 28 hemodialysis patients who undertook exercise testing, revealing that those tested after the 2-day interval had significantly better oxygen uptake values during peak exercise compared to those tested after 3 days. *
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This is a case of a 59-year-old man presenting with myopericarditis. Over a 2-week period, he developed progressive symptoms and worsening pericardial effusion, leading to cardiac tamponade. Pericardiocentesis revealed hemopericardium, and multidetector computed tomography angiography showed left ventricular free wall rupture.

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After a myocardial infarction, the inflammatory response is connected to major adverse outcomes such as ischemia-reperfusion injury, adverse cardiac remodeling, infarct size and poor prognosis. INFlammatIoN amI sTudY (INFINITY) is a multicenter, prospective, observational, cohort study designed to investigate the prognostic role of the cytokines IL-6, IL-10, IL-18 and IL-17 and the adipokines leptin, apelin and chemerin in patients with acute coronary syndrome. The study will test if these inflammatory biomarkers reflect different clinical manifestations of coronary artery disease and have a prognostic role in a 6-month follow-up period.

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  • - A meta-analysis was conducted to evaluate the impact of SGLT-2 inhibitors on heart failure (HF) events in chronic kidney disease (CKD) patients, revealing a 32% reduction in the risk of HF events compared to placebo.
  • - The analysis included 12 randomized controlled trials with a total of 89,191 participants, showing that the effect of SGLT-2 inhibitors was more pronounced in patients with lower kidney function (eGFR <60 ml/min/1.73 m²).
  • - The findings suggest that SGLT-2 inhibitors could play a significant role in preventing HF events in advanced CKD patients, potentially changing treatment approaches.
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  • - This review paper details the historical progression and underlying mechanisms of acutely decompensated heart failure (ADHF), focusing on how the disease has evolved over time.
  • - It discusses the role of diuretics as a key treatment for managing fluid overload in ADHF, while noting the increasing issue of diuretic resistance that arises from factors like renal failure and long-term usage.
  • - Additionally, the paper explores ultrafiltration as a potential alternative or complementary treatment for ADHF, highlighting recent data and advancements in this area of heart failure management.
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Background: Diastolic dysfunction (DD) is a long-established marker of disease progression in patients with aortic valve stenosis (AS), indicating valvular myocardial damage. Recently, substantial observational data have emerged demonstrating that worse pre-operative DD assessed using echocardiography is associated with adverse long-term clinical outcomes after transcatheter aortic valve replacement (TAVR).

Aim: To systematically appraise and quantitatively synthesize current evidence on the prognostic impact of echocardiographic severe DD derived by echocardiography before TAVR.

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The present systematic review and meta-analysis aimed to investigate the prognostic value of stress hyperglycemia ratio (SHR) in patients with acute myocardial infarction (AMI). A total of 26 cohort studies, involving 87,974 patients, were analyzed. The frequentist meta-analysis showed that AMI patients with SHR in the upper quantile had a significantly higher hazard of major adverse cardiovascular and cerebrovascular events (MACCE, HR = 1.

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Heart failure (HF) is a debilitating disease with 26 million patients worldwide. Consistent and complex self-care is required on the part of patients to adequately adhere to medication and to the lifestyle changes that the disease necessitates. Mobile health (mHealth) is being increasingly incorporated in patient interventions in HF, as smartphones prove to be ideal platforms for patient education and self-help assistance.

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  • Patients with diabetes mellitus (DM), particularly type II DM (T2DM), are at a higher risk for developing heart failure (HF), yet there is limited data on how prevalent different stages of HF are among this group in Greece.
  • This study aims to investigate the occurrence and progression of HF stages in T2DM patients diagnosed in the last decade (with no prior HF history) and to identify factors that may lead to symptomatic HF in these patients.
  • Using a multi-center, prospective cohort design involving 300 patients across 11 specialized cardiology centers, the study will track various health data over 24 months to determine the rates of symptomatic HF and other HF stages in this population.
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Myocardial infarction with nonobstructive coronary arteries (MINOCA) is a distinct subtype of myocardial infarction (MI), occurring in about 8-10% of spontaneous MI cases referred for coronary angiography. Unlike MI with obstructive coronary artery disease, MINOCA's pathogenesis is more intricate and heterogeneous, involving mechanisms such as coronary thromboembolism, coronary vasospasm, microvascular dysfunction, dissection, or plaque rupture. Diagnosing MINOCA presents challenges and includes invasive and non-invasive strategies aiming to differentiate it from alternative diagnoses and confirm the criteria of elevated cardiac biomarkers, non-obstructive coronary arteries, and the absence of alternate explanations for the acute presentation.

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Background: Risk stratification for sudden cardiac death in post-myocardial infarction (post-MI) patients remains a challenging task. Several electrocardiographic noninvasive risk factors (NIRFs) have been associated with adverse outcomes and were used to refine risk assessment. This study aimed to evaluate the performance of NIRFs extracted from 45-min short resting Holter ECG recordings (SHR), in predicting ventricular tachycardia inducibility with programmed ventricular stimulation (PVS) in post-MI patients with preserved left ventricular ejection fraction (LVEF).

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The P wave, representing the electrical fingerprint of atrial depolarization, contains information regarding spatial and temporal aspects of atrial electrical-and potentially structural-properties. However, technical and biological reasons, including-but not limited to-the low amplitude of the P wave and large interindividual variations in normal or pathologic atrial electrical activity, make gathering and utilizing this information for clinical purposes a rather cumbersome task. However, even crude ECG descriptors, such as P-wave dispersion, have been shown to be of predictive value for assessing the probability that a patient already has or will shortly present with AF.

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This systematic review and meta-analysis aims to evaluate the predictive value of total atrial conduction time (TACT) assessed by tissue Doppler echocardiography (PA-TDI) in atrial fibrillation (AF) recurrence in patients following a rhythm-control strategy. A systematic approach following Preferred Reporting Items for Systematic Reviews and Meta-Analyses reporting guidelines was applied in electronic databases (Pubmed, Cochrane Library, and Web of Science), supplemented by scanning through studies' references. TACT was compared using a random-effects model and presented as a difference in means (MD).

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