Publications by authors named "Angel Mayedo"

Introduction: Both atrial fibrillation (AF) and amyloidosis increase stroke risk. We evaluated the best anticoagulation strategy in AF patients with coexistent amyloidosis.

Methods: Consecutive AF patients with concomitant amyloidosis were divided into two groups based on the postablation stroke-prophylaxis approach; group 1: left atrial appendage occlusion (LAAO) in eligible patients and group 2: oral anticoagulation (OAC).

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Background: High-voltage pulses can cause hemolysis.

Objectives: The authors evaluated the occurrence of hemoglobinuria after pulsed-field ablation (PFA) and its impact on renal function in patients with atrial fibrillation (AF).

Methods: A consecutive series of patients with AF undergoing PFA were included in this analysis.

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  • The study analyzed the impact of pulsed-field ablation (PFA) on pulmonary hypertension (PH) in patients with non-paroxysmal atrial fibrillation (AF), comparing it with standard radiofrequency ablation (RFA).
  • It involved 28 patients who had previously undergone multiple RFAs and experienced PH, assessing changes in pulmonary artery pressure before and after the treatment.
  • Results showed that PFA did not worsen mean pulmonary artery pressure compared to RFA, highlighting PFA as a potentially safer option for these patients.
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  • Earlier studies link severe HIV infection with an increased risk of atrial fibrillation (AF), prompting this research on catheter ablation outcomes for HIV+ AF patients.
  • The study included 1438 AF patients, with 31 having HIV, and used propensity matching to compare outcomes between HIV+ and non-HIV patients after their first catheter ablation.
  • Results showed that HIV patients experienced significantly higher recurrence of AF after 5 years (100% vs. 54%) and had more non-pulmonary vein triggers, particularly from the coronary sinus and left atrial appendage, although outcomes after further ablation of these triggers were similar between the two groups.
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Aims: This study aimed to examine the clinical benefits of targeted ablation of all Premature ventricular complex (PVC) morphologies vs. predominant PVC only.

Methods And Results: A total of 171 consecutive patients with reduced left ventricular ejection fraction (LVEF) and ≥2 PVC morphology with high burden (>10%/day) undergoing their first ablation procedure were included in the analysis.

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Article Synopsis
  • Atrial fibrillation (AF) is common among patients with premature ventricular complexes (PVC), as found in a study of 394 patients undergoing PVC ablation between 2016 and 2019.
  • Out of these, 24% had AF, which was linked to older age, lower left ventricular ejection fraction, and higher CHA DS -VASc scores compared to those without AF.
  • At the 2-year mark, recurrence of PVCs was notably higher in patients with AF (17.7%) than in those without (9.4%), indicating that AF negatively impacts the success of PVC ablation.
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Introduction: Obesity, a known risk factor for atrial fibrillation (AF), is potentially reversible through lifestyle changes, including diet and physical activity. However, lack of compliance is a major obstacle in attaining sustained weight loss. We investigated the impact of patient engagement using a digital monitoring system on compliance for lifestyle-change measures and subsequent outcome.

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Objectives: In this study, the authors investigated the ablation success of scar homogenization with combined (epicardial + endocardial) vs endocardial-only approach for ventricular tachycardia (VT) in patients with ischemic cardiomyopathy (ICM) at 5 years of follow-up.

Background: Best ablation approach to achieve long-term success rate in VT patients with ICM is not known yet.

Methods: Consecutive ICM patients undergoing VT ablation at our center were classified into group 1: endocardial + epicardial scar homogenization and group 2: endocardial scar homogenization.

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Tests to detect active viral infection and related immune response in the staff and patients attending health care facilities effectively identified positive cases presenting with or without symptoms of coronavirus disease (COVID)-19. Subsequent home isolation of these contagious cases helped curb the chance of the spread of infection at the workplace. Furthermore, serologic tests conducted postvaccination facilitated the detection of individuals with poor immune response following active immunization that would likely require further safety measures to protect themselves from contracting the infection in health care facilities.

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Aims: We evaluated the efficacy of an ablation strategy empirically targeting pulmonary veins (PVs) and posterior wall (PW) and the prevalence and clinical impact of extrapulmonary trigger inducibility and ablation in a large cohort of patients with persistent atrial fibrillation (PerAF).

Methods And Results: A total of 1803 PerAF patients were prospectively enrolled. All patients underwent pulmonary vein antrum isolation (PVAI) extended to the entire PW.

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Article Synopsis
  • The study evaluated the long-term outcomes of ablation procedures targeting specific heart areas in patients with paroxysmal atrial fibrillation, focusing on recurrence and treatment efficacy.
  • A total of 1,633 patients were divided into two groups: those without comorbidities and those with cardiovascular issues, with recurrence rates after 10 years being higher in the comorbidity group (51% vs. 31%).
  • Despite these differences, both groups showed high success rates in remaining arrhythmia-free after repeat ablation, indicating the importance of addressing non-pulmonary vein triggers regardless of existing health conditions.
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Background We compared the cognitive status and quality of life in patients with atrial fibrillation undergoing left atrial appendage occlusion (LAAO) or remaining on oral anticoagulation (OAC) after atrial fibrillation ablation. Methods and Results Cognition was assessed by the Montreal Cognitive Assessment (MoCA) survey at baseline and follow-up. Consecutive patients receiving LAAO or OAC after atrial fibrillation ablation were screened, and patients with a score of ≤17 were excluded from the study.

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Background: This study evaluated the arrhythmia profile and ablation outcome in women with atrial fibrillation (AF) aged ≥75 years.

Methods: A total of 573 consecutive female patients undergoing first AF ablation were classified into group 1: ≥75 years (n = 221) and group 2: < 75 years (n = 352). Isolation of PVs, posterior wall and superior vena cava was performed in all.

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Introduction: Atrial fibrillation (AF) is a complex and multi-factorial rhythm disorder. Catheter ablation is widely used for the management of AF. However, it is limited by relapse of the arrhythmia necessitating repeat procedures.

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Background: We evaluated the efficacy of a new method in identifying peri-device leak (PDL) using morphology of the thrombus formed inside the left atrial appendage (LAA) as seen on follow-up transesophageal echo (TEE).

Method: A total of 291 consecutive patients undergoing Watchman procedure were included in this analysis. TEE was performed at 45 days postprocedure.

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