Publications by authors named "Samuel Buliard"
Currently, pulmonary vein isolation (PVI) is the gold standard in catheter ablation for atrial fibrillation (AF). However, PVI alone may be insufficient in the management of persistent AF, and complementary methods are being explored. One such method takes an anatomical approach-improving both its success rate and lesion durability may lead to improved treatment outcomes.
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- The study aims to differentiate atypical atrioventricular nodal reentrant tachycardia (AVNRT) from orthodromic reciprocating tachycardia using a new method called the "local VA index," based on coronary sinus signals during arrhythmia.
- The retrospective analysis involved 75 patients with 37 diagnosed with AVRT and 38 with AVNRT, revealing significant differences in specific measurements between the two groups.
- The local VA index showed potential as an effective tool for distinguishing these arrhythmias, with a suggested threshold of 40 ms, while also highlighting limitations in traditional pacing methods due to variability in patient results.
Aims: From a patient and health system perspective, managing worsening heart failure (WHF) as an outpatient has become a priority. Remote management allows early detection of WHF, enabling timely intervention with the aim of preventing hospitalization. The objective of the study was to evaluate the feasibility and safety of remotely managing WHF events using a multiparametric platform.
View Article and Find Full Text PDFBackground: Omnipolar technology (OT) was recently proposed to generate electroanatomic voltage maps with orientation-independent electrograms. We describe the first cohort of patients undergoing ventricular tachycardia (VT) ablation guided by OT.
Objective: The purpose of this study was to compare omnipolar and bipolar high-density maps with regard to voltage amplitude, late potential (LP) annotation, and isochronal late activation mapping distribution.
Article Synopsis
- Ventricular arrhythmias (VAs) are a leading cause of death in patients with repaired Tetralogy of Fallot (rTOF), and the study aimed to evaluate outcomes of patients who underwent programmed ventricular stimulation (PVS) followed by possible ablation before pulmonary valve replacement (PVR).
- The study included 77 patients between 2010 and 2018; ablation was performed in those deemed inducible or with slow conduction, and during follow-up, no sudden cardiac deaths were reported.
- Findings suggest that preoperative electrophysiological studies can identify rTOF patients at risk for VAs, enabling targeted ablation and better decision-making for implantable cardioverter-defibrillator (ICD)
Introduction: With the rarefaction of home medical visits, prehospital emergencies are ensured by the Mobile Emergency and Resuscitation Structures (SMUR) and the Firemen accompanied by Firefighters Nurses (FfNs).
Purpose Of Research: The main objective of this work is to describe the pathologies managed by the FfNs of the Loire district according to their International Classification of Primary Care version 2 and the Clinical Classification of Diseases of the initial SMUR during all interventions performed in 2019. The secondary objective will be to determine the associated Emergency Care Nursing Protocols (PISU).
Aims: The diagnostic accuracy of proprietary smartwatch algorithms and the interpretability of smartwatch ECG tracings may differ between available models. We compared the diagnostic potential for detecting atrial fibrillation (AF) of three commercially available smartwatches.
Methods: We performed a prospective, non-randomized, and adjudicator-blinded clinical study of 100 patients in AF and 100 patients in sinus rhythm, patients with atrial flutter were excluded.
Background: When worn on the wrist, smartwatch electrocardiograms may provide important but incomplete information.
Aims: We sought to evaluate the added benefit of placing the smartwatch on the ankle and on the chest to diagnose various electrocardiographic abnormalities compared with 12-lead electrocardiograms.
Methods: Two hundred and sixty patients with (n=189) or without (n=71) known cardiac disorders underwent 12-lead electrocardiogram and smartwatch electrocardiogram recordings of lead I (AW-I) and of leads I and II and pseudo chest leads V1 and V6 (AW-4).
Aims: Smartwatch electrocardiograms (ECGs) could facilitate the detection of sudden cardiac arrest (SCA)-associated abnormalities. We evaluated the feasibility of using smartwatch-derived ECGs for detecting SCA-associated abnormalities in young adults and its agreement with 12-lead ECGs.
Methods And Results: Twelve-lead and Apple Watch ECGs were registered in 155 healthy volunteers and 67 patients aged 18-45 years with diagnosis and ECG signs of long-QT syndrome (n = 10), Brugada syndrome (n = 12), ventricular pre-excitation (n = 19), hypertrophic cardiomyopathy (HCM, n = 13), and arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVC/D, n = 13).
Remote monitoring of patients with heart failure during the first national lockdown for COVID-19 in France.
Eur Heart J Digit Health
September 2021
Aims: Multiparametric remote monitoring of patients with heart failure (HF) has the potential to mitigate the health risks of lockdowns for COVID-19. We aimed to compare healthcare use, physiological variables, and HF decompensations during 1 month before and during the first month of the first French national lockdown for COVID-19 among patients undergoing remote monitoring.
Methods And Results: Transmitted vital parameters and data from cardiac implantable electronic devices were analysed in 51 patients.
Background: Possible mechanisms of left-axis deviation (LAD) in the setting of left bundle branch block (LBBB) include differences in cardiac electrophysiology, structure, or anatomic axis.
Objective: The purpose of this study was to clarify the mechanism(s) responsible for LAD in patients with LBBB.
Methods: Twenty-nine patients with nonischemic cardiomyopathies and LBBB underwent noninvasive electrocardiographic imaging (ECGi), cardiac computed tomography, and magnetic resonance imaging in order to define ventricular electrical activation, characterize cardiac structure, and determine the cardiac anatomic axis.
Background: The subcutaneous implantable cardioverter-defibrillator (S-ICD) remains a new technology requiring accurate assessment of the various aspects of its functioning. Isolated cases of delayed sensing of ventricular arrhythmia have been described.
Objective: The purpose of this multicenter study was to assess the quality of sensing during induced ventricular fibrillation (VF).