Publications by authors named "Antonios Antoniadis"

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.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF
Article Synopsis
  • Right ventricular (RV) failure significantly affects survival rates in heart failure (HF) patients, prompting the investigation of cardiac resynchronization therapy (CRT) for improving RV function.
  • A systematic review analyzed data from 30 studies, revealing CRT significantly enhances RV function metrics such as fractional area change and tricuspid annular plane systolic excursion while lowering pulmonary artery pressure.
  • Despite positive findings for some RV function indices, further research is needed to understand the long-term benefits of CRT and identify which patients gain the most from the treatment.
View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

Introduction: It has been postulated that nutrition may influence the risk for cutaneous melanoma (CM); therefore, we aimed to assess the associations of food groups and individual nutrient intakes with CM in a Greek population.

Methods: In this case-control study, 151 patients with histologically confirmed CM, newly diagnosed and treated in the Oncology Department of the "Laikon" University Hospital (Athens, Greece), and 151 age- and sex-matched healthy individuals residing in the Athens metropolitan area, recruited among participants for routine health examinations, were included. All participants completed a questionnaire comprising anthropometric measurements, sociodemographic, lifestyle, and health-related variables.

View Article and Find Full Text PDF

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).

View Article and Find Full Text PDF

Baseline right ventricular (RV) function potentially determines the response to Cardiac Resynchronization Therapy (CRT) but is not included in the current selection criteria. In this meta-analysis, we examined the value of echocardiographic indices of RV function as potential predictors of CRT outcomes in patients with standard indications for CRT. Baseline tricuspid annular plane systolic excursion was consistently higher in CRT responders, and this association appears independent of age, sex, ischemic etiology of heart failure, and baseline left ventricular ejection fraction.

View Article and Find Full Text PDF

Aims: The Iron Intravenous Therapy in Reducing the burden of Severe Arrhythmias in HFrEF (RESAFE-HF) registry study aims to provide real-word evidence on the impact of intravenous ferric carboxymaltose (FCM) on the arrhythmic burden of patients with heart failure with reduced ejection fraction (HFrEF), iron deficiency (ID), and implanted cardiac implantable electronic devices (CIEDs).

Methods And Results: The RESAFE-HF (NCT04974021) study was designed as a prospective, single-centre, and open-label registry study with baseline, 3, 6, and 12 month visits. Adult patients with HFrEF and CIEDs scheduled to receive IV FCM as treatment for ID as part of clinical practice were eligible to participate.

View Article and Find Full Text PDF

Atrial fibrillation (AF) is the most common arrhythmia. myAlgos is an mHealth disease management system consisting of physician-oriented platform and patient-oriented smartphone app. Our purpose was to assess the usability of myAlgos by physicians and patients and the effect of myAlgos on the quality of life (QoL) in patients with paroxysmal AF (PAF).

View Article and Find Full Text PDF

Purpose: The rationale of this study was to investigate the prevalence of daily and night symptoms and quality of sleep in Greek COPD patients as a means to evaluate their response to treatment with the fixed dose combination of aclidinium/formoterol (administered through the Genuair device).

Patients And Methods: This study was a multicenter, nationwide, non-interventional, observational study in 2105 patients suffering from COPD, who have recently started treatment with aclidinium/formoterol. Patients were attending to two visits, one baseline and a final visit, 3 months later.

View Article and Find Full Text PDF

Background: In syncopal patients without underlying structural disease, we sought to investigate the association of Adenosine Plasma Levels (ADP) with the clinical presentation of neurally mediated syncope (NMS) and the outcomes of Head-Up Tilt Table Test (HUTT) and Adenosine test (ADT).

Methods: We studied 124 patients with different clinical types of NMS, i.e.

View Article and Find Full Text PDF
Article Synopsis
  • There is no clear agreement on the best catheter ablation strategy for treating atrial fibrillation (AF), prompting a study to compare different approaches through network meta-analysis.
  • A systematic review of 67 randomized controlled trials involving nearly 10,000 patients revealed that strategies combining pulmonary vein isolation (PVI) with other techniques significantly reduced the risk of arrhythmia recurrence compared to PVI alone.
  • The findings suggested that combining PVI with methods like renal denervation and additional ablation lines enhances its effectiveness, while overall safety remains consistent across different strategies.
View Article and Find Full Text PDF

The identification of patients prone to atrial fibrillation (AF) relapse after catheter ablation is essential for better patient selection and risk stratification. The current prospective cohort study aims to validate a novel P-wave index based on beat-to-beat (B2B) P-wave morphological and wavelet analysis designed to detect patients with low burden AF as a predictor of AF recurrence within a year after successful catheter ablation. From a total of 138 consecutive patients scheduled for AF ablation, 12-lead ECG and 10 min vectorcardiogram (VCG) recordings were obtained.

View Article and Find Full Text PDF
Article Synopsis
  • - The study examines various catheter ablation (CA) strategies for treating paroxysmal atrial fibrillation (PAF) to determine their efficacy and safety, involving data from 43 randomized controlled trials with over 6,700 patients.
  • - Results showed that adding treatments like adjuvant ablation or sympathetic modulation to pulmonary vein isolation (PVI) significantly reduced the risk of arrhythmia recurrence compared to PVI with radiofrequency alone, while PVI with radiofrequency was better than non-PVI strategies.
  • - No major safety differences were found among the various CA strategies, indicating that while different PVI methods are generally similar in effectiveness, combining them with additional treatments could enhance results for patients.
View Article and Find Full Text PDF

Introduction: Electrophysiology (EP) procedures are nowadays the gold-standard method for tachyarrhythmia treatment with impressive success rates, but also with a considerable risk of complications, mainly vascular. A systematic review and meta-analysis was performed to evaluate the safety of ultrasound (US)-guided femoral vein access in EP procedures compared to the traditional anatomic landmark-guided method.

Methods: We searched Pubmed (MEDLINE), Embase, Web of Science, and Cochrane electronic databases for relevant entries, dated from January 1st, 2000 to June 30th, 2021.

View Article and Find Full Text PDF

Syncope is a common clinical condition affecting 50% of the general population; however, its exact pathophysiology and underlying mechanisms remain elusive. The adenosine test (ADT) has been proposed as a complementary diagnostic test in the work-up of syncope of unknown origin aiming to further elucidate the underlying pathogenetic mechanism of spontaneous syncope. Although ADT has not been endorsed by the recent European Society of Cardiology guidelines on syncope management, the use of a quick, safe and non-invasive test which can contribute to an accurate diagnosis and rationalised therapy, may deserve further consideration.

View Article and Find Full Text PDF
Article Synopsis
  • The study examined differences in coronary atherosclerosis between men and women, focusing on anatomical features and the role of endothelial shear stress (ESS) in plaque growth.
  • Researchers analyzed data from 1,183 coronary arteries, using ultrasound technology to assess characteristics and changes in plaque over a 6-10 month period.
  • Findings revealed that while women's coronary arteries and plaques were smaller, the rate of plaque progression and ESS were similar between genders; however, younger women exhibited a notably higher rate of plaque growth compared to younger men, indicating that age influences atherosclerosis differently across genders.
View Article and Find Full Text PDF

Early identification of patients at risk for paroxysmal atrial fibrillation (PAF) is essential to attain optimal treatment and a favorable prognosis. We compared the performance of a beat-to-beat (B2B) P-wave analysis with that of standard P-wave indices (SPWIs) in identifying patients prone to PAF. To this end, 12-lead ECG and 10 min vectorcardiogram (VCG) recordings were obtained from 33 consecutive, antiarrhythmic therapy naïve patients, with a short history of low burden PAF, and from 56 age- and sex-matched individuals with no AF history.

View Article and Find Full Text PDF

Background: The contribution of atrial and ventricular function in neurocardiogenic syncope (NCS) pathophysiology is elusive.

Hypothesis: We assessed the influence of echocardiographic properties to the age of presentation and NCS recurrences.

Methods: We assigned 124 patients with symptoms suggesting NCS, to those with syncope initiation at age <35 (group A, n = 56) and >35 years (group B, n = 68).

View Article and Find Full Text PDF

Purpose Of Review: Excessive supraventricular ectopic activity (ESVEA), in the form of frequent premature atrial contractions (PACs) and runs of PACs, is commonly observed in clinical practice and is frequently considered to be benign. Yet, recent studies have demonstrated a link between ESVEA and adverse cardiovascular outcomes. The aim of this meta-analysis was to examine the association between ESVEA and the risk of atrial fibrillation (AF), stroke, and mortality.

View Article and Find Full Text PDF

Objective: This study aims to (i) translate, culturally adapt, and preliminarily validate the arrhythmia-specific Umea22 (U22) questionnaire and (ii) assess the impact of radiofrequency (RF) ablation and medical treatment on the quality of life of patients with supraventricular tachycardias (SVTs).

Methods: A total of 140 patients with atrioventricular nodal re-entry tachycardia (AVNRT) and atrioventricular re-entry tachycardia (AVRT) were enrolled in the study. Of these, 100 patients underwent RF ablation (group A) and 40 patients were managed with antiarrhythmic medications (group B).

View Article and Find Full Text PDF