Publications by authors named "Velicki L"

Introduction: Heart failure (HF) is a complex clinical syndrome. Accurate risk stratification and early diagnosis of HF are challenging as its signs and symptoms are non-specific. We propose to address this global challenge by developing the STRATIFYHF artificial intelligence-driven decision support system (DSS), which uses novel analytical methods in determining the risk, diagnosis and prognosis of HF.

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  • Hypertrophic cardiomyopathy (HCM) is a heart condition marked by thickening of the heart muscle, heightening the risk for serious heart issues, and this study looks into the expression of certain genes related to cell death (apoptosis) as potential markers for the disease's progression.
  • Blood samples from 93 HCM patients were analyzed using quantitative real-time PCR (qPCR) to assess gene expression and study the relationship between these genes and clinical parameters.
  • Results showed that many HCM patients had lower levels of specific apoptosis-regulating genes, whereas BAX and another gene were elevated in a significant number of cases, indicating a possible protective response in the heart, which may be explored further for improving treatment outcomes
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Gestational hypertension (GH) and preeclampsia (PE) are associated with the onset of hypertension. This study aimed to investigate whether the blood pressure (BP) pattern in GH is associated with the prevalence of hypertension later in life. In this prospective cohort study pregnant women screened for GH underwent medical history, laboratory analysis, ambulatory blood pressure monitoring (AMBP), and transthoracic echocardiography (with left ventricular global longitudinal strain (LVGLS)) assessment.

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Aim: We sought the cardiopulmonary exercise testing (CPET) parameter that most accurately reflected therapeutic efficacy in patients with hypertrophic cardiomyopathy (HCM).

Methods: Well-being questionnaire, N-terminal brain natriuretic peptide measurements, echocardiography, and CPET were performed in patients with symptomatic non-obstructive HCM during phase II, randomized, open-label multicentre study, before and after 16 weeks of traditional or sacubitril/valsartan treatment. Patients were followed 36 months after the initial CPET.

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Unlabelled: Fabry disease (FD) is a rare genetic disorder that affects various organs and systems in the body. The disease is caused by a deficiency in the lysosomal enzyme α-galactosidase A (AGAL), which leads to the accumulation of globotriaosylceramide (Gb3) within lysosomes. This accumulation can cause damage to cells and organ systems, leading to a wide range of symptoms and complications.

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Background And Aims: The question of when and how to treat truly asymptomatic patients with severe aortic stenosis (AS) and normal left ventricular (LV) systolic function is still subject to debate and ongoing research. Here, the results of extended follow-up of the AVATAR trial are reported (NCT02436655, ClinicalTrials.gov).

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Background: Post-operative atrial fibrillation (POAF) is a frequent complication after cardiac surgery. It is associated with prolonged hospital stay, increased morbidity, mortality rate and economic costs. The aim of the study was to determine the association between the values of Galectin3 and N-terminal pro-B-type natriuretic peptide (NTproBNP) with POAF after cardiac surgery.

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Background: There is evidence that right ventricular (RV) contractile function, especially its coupling with the pulmonary circulation, has an important prognostic value in patients with left ventricular dysfunction.

Aims: This study aimed to identify the best echocardiographic parameters of RV function and pulmonary artery systolic pressure (PASP) alone or in the form of the index of right ventricular-pulmonary artery coupling (RV-PA coupling) to determine the best predictor of 1-year major adverse cardiovascular events (MACE), which were defined as cardiovascular death and cardiac decompensation in heart failure patients with reduced ejection fraction (HFrEF).

Methods And Results: The study enrolled 191 HFrEF patients (mean age 62.

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Aim: Sacubitril/valsartan treatment reduces mortality and hospitalizations in heart failure with reduced ejection fraction but has limited application in hypertrophic cardiomyopathy (HCM). The aim of this study was to evaluate the effect of sacubitril/valsartan on peak oxygen consumption (VO) in patients with non-obstructive HCM.

Methods And Results: This is a phase II, randomized, open-label multicentre study that enrolled adult patients with symptomatic non-obstructive HCM (New York Heart Association class I-III) who were randomly assigned (2:1) to receive sacubitril/valsartan (target dose 97/103 mg) or control for 16 weeks.

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  • * Researchers analyzed data from the HOPE-2 registry, examining 2382 patients discharged alive and tracking their mortality and long-term COVID-19 symptoms.
  • * Findings reveal that patients with elevated troponin levels face higher mortality rates and are more likely to experience lasting cardiovascular issues, such as fatigue and dyspnea, after discharge.
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Simple and low-cost biosensing solutions are suitable for point-of-care applications aiming to overcome the gap between scientific concepts and technological production. To compete with sensitivity and selectivity of golden standards, such as liquid chromatography, the functionalization of biosensors is continuously optimized to enhance the signal and improve their performance, often leading to complex chemical assay development. In this research, the efforts are made on optimizing the methodology for electrochemical reduction of graphene oxide to produce thin film-modified gold electrodes.

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Hypertrophic cardiomyopathy (HCM) is the most prevalent heritable cardiomyopathy. HCM is considered to be caused by mutations in cardiac sarcomeric protein genes. Recent research suggests that the genetic foundation of HCM is much more complex than originally postulated.

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: Pulmonary valve infective endocarditis (PVIE) is a rare form of infective endocarditis (IE) and is associated with high mortality and severe complications. Guidelines for treatment of this form of IE are scarce and based on general recommendations. We report a case series of PVE.

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Background And Objective: Predicting the long-term expansion and remodeling of the left ventricle in patients is challenging task but it has the potential to be clinically very useful.

Methods: In our study, we present machine learning models based on random forests, gradient boosting, and neural networks, used to track cardiac hypertrophy. We collected data from multiple patients, and then the model was trained using the patient's medical history and present level of cardiac health.

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Background: Concern has risen about the effects of COVID-19 in interstitial lung disease (ILD) patients. The aim of our study was to determine clinical characteristics and prognostic factors of ILD patients admitted for COVID-19.

Methods: Ancillary analysis of an international, multicenter COVID-19 registry (HOPE: Health Outcome Predictive Evaluation) was performed.

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  • Patients with diabetes mellitus (DM) experience a higher long-term mortality rate post-COVID-19 compared to those without DM.
  • Among the studied symptoms, diabetics showed fewer cardiovascular complaints but a higher incidence of psychiatric issues like paranoia, and more respiratory complications as evidenced by abnormal spirometry.
  • Rates of readmission and reinfection after COVID-19 were similar for both diabetic and non-diabetic patients, indicating that the presence of diabetes does not significantly impact these outcomes.
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This study evaluated the effect of sacubtril/valsartan on cardiac remodeling, molecular and cellular adaptations in experimental (rat) model of hypertension-induced hypertrophic cardiomyopathy. Thirty Wistar Kyoto rats, 10 healthy (control) and 20 rats with confirmed hypertension-induced hypertrophic cardiomyopathy (HpCM), were used for this study. The HpCM group was further subdivided into untreated and sacubitril/valsartan-treated groups.

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  • Heart disease significantly worsens outcomes for COVID-19 survivors, leading to higher rates of post-COVID complications and increased mortality.
  • In a study involving over 7,000 patients, those with heart disease were generally older with more health issues compared to those without, showing a 2.63 times higher risk of death.
  • The research highlights that vaccination against COVID-19 offers substantial protection, drastically lowering the risk of mortality for patients with pre-existing heart conditions.
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  • Patients with a history of acute coronary syndrome (ACS) have a high risk of recurring cardiovascular issues, and recent therapies aim to lower these risks but may increase bleeding.
  • In a study of over 10,000 ACS patients, it was found that 53.4% qualified for the PEGASUS strategy, while 38.2% were eligible for the COMPASS strategy, with a notable overlap of 34.4% between the two.
  • Overall, about one-third of the patients could benefit from either prolonged dual antiplatelet therapy or dual pathway inhibition, indicating varying eligibility for these treatments among ACS patients.
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Hypertrophic cardiomyopathy (HCM) is a relatively common inherited cardiac disease that results in left ventricular hypertrophy. Machine learning uses algorithms to study patterns in data and develop models able to make predictions. The aim of this study is to identify HCM subtypes and examine the mechanisms of HCM using machine learning algorithms.

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Background: Heart failure patients demonstrate reduced functional capacity, hemodynamic function, and quality of life (QOL) which are associated with high mortality and morbidity rate. The aim of the present study was to assess the relationship between functional capacity, hemodynamic response to exercise and QOL in chronic heart failure.

Methods: A single-centre prospective study recruited 42 chronic heart failure patients (11 females, mean age 60 ± 10 years) with reduced left ventricular ejection fraction (LVEF = 23 ± 7%).

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Aim: To assess the effects of different test-set design strategies for magnetic resonance (MR) image classification using deep learning.

Methods: Error rates in 10 experimental settings were assessed. The performance of pretrained models and data augmentation were examined as possible contributing factors.

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The study aimed to determine if the non-dipping pattern of blood pressure (BP) influences preterm delivery in gestational hypertension (GH), but also maternal clinical findings and birth weight. Sixty women with GH, i.e.

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: Hypertrophic cardiomyopathy (HCM) is the most common inherited cardiac disease that affects approximately 1 in 500 people. Due to an incomplete disease penetrance associated with numerous factors, HCM is not manifested in all carriers of genetic mutation. Although about two-thirds of patients are male, it seems that female gender is associated with more severe disease phenotype and worse prognosis.

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Background: Cardiovascular disorders in general are responsible for 30% of deaths worldwide. Among them, hypertrophic cardiomyopathy (HCM) is a genetic cardiac disease that is present in about 1 of 500 young adults and can cause sudden cardiac death (SCD).

Objective: Although the current state-of-the-art methods model the risk of SCD for patients, to the best of our knowledge, no methods are available for modeling the patient's clinical status up to 10 years ahead.

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