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22 Results Found for “dominant frequency”
Prof. Jonathan Kalman discusses the rapid uptake of pulsed field ablation, its potential advantages over thermal ablation, and how the role of AF ablation may continue to expand.
Ventricular fibrillation (VF) is characterized by rapid (>300 beats a per minute), irregular electrical activation with variable electrocardiographic waveforms that prevents coordinated myocardial contraction, resulting in immediate loss of cardiac output.1 It most commonly occurs in the context of coronary ...
Conduction system pacing (CSP) is being increasingly adopted as a more physiological alternative to right ventricular and biventricular pacing and is an integral part of the European Heart Rhythm Association (EHRA) core curriculum for the device specialist.1–6 Left bundle branch ...
Forty-seven years ago, Andreas Gruentzig introduced ‘percutaneous transluminal coronary angioplasty’ (PTCA) as a new approach to treating symptomatic occlusive coronary artery disease.1 The mechanism of balloon angioplasty (BA) formed the foundation around which newer equipment and technologies were developed, including ...
Heart failure (HF), a prevalent disease, is the common final pathway of several conditions, which result in the activation of numerous neurohumoral pathways. Cardiorenal interaction plays an essential role in the progression of the disease, and the use of diuretics ...
The POTTER AF registry looked at oesophageal fistula formation following atrial fibrillation ablation, with focus on the real world incidence, characteristics, optimal management and patient outcomes. In this touchCARDIO interview, we speak with Professor Roland Tilz (University Heart Center Lü...
Hypertrophic cardiomyopathy (HCM), along with its more common subgroup, hypertrophic obstructive cardiomyopathy (HOCM), is the most common monogenic cardiovascular disorder, with a prevalence of about 1 in 500,1 and a dominant inheritance pattern, thus clustering in affected families. Patients with HCM often ...
Vasovagal syncope is common, and while it is usually associated with a benign prognosis, it results in significant physical and psychological morbidity for affected individuals. Despite comprehensive understanding of the underlying pathophysiology, there have been few definitive therapeutic advances until ...
Introduction: Identifying ablation targets for persistent atrial fibrillation (PersAF) remains challenging. Dominant frequency (DF) and organization index (OI) of atrial electrograms (AEGs) are proposed to identify driver sites that contribute to AF perpetuation. This work aims to use DF and ...
Electrophysiological Substrates in Papillary Muscle Arrhythmias – Implications for Catheter Ablation
Premature ventricular complexes (PVCs) can cause significant left ventricular (LV) dysfunction leading to debilitating symptoms.1 Multiple single-centre studies have shown that the catheter ablation is effective in curing these PVCs.2,3 However, catheter ablation of ventricular arrhythmias (VAs) originating from papillary ...
Atrial fibrillation (AF) is one of the most frequent arrhythmias worldwide, and, despite progress in the management of patients with AF, remains one of the major causes of stroke, heart failure, sudden death, and cardiovascular morbidity.1 The incidence and ...
With the introduction of invasive and noninvasive phase mapping in humans, visualisation of rotor activity during atrial fibrillation has emerged as a new concept.1–3 However, phase maps rendered during human atrial fibrillation using noninvasive information from body-surface electrocardiograms (ECGs) versus ...
Welcome to the winter edition of the European Journal of Arrhythmia and Electrophysiology. Throughout 2016, we have featured a number of topical reviews, research articles, case reports and editorials across the field of arrhythmia and electrophysiology. Insertion of implantable cardiac devices ...
Brugada syndrome (BrS), first described in 1992, is an autosomal dominant, arrhythmogenic disease. There is a male predominance of the syndrome and the prevalence is highest in Asian and Southeast Asian countries, reaching 0.5.1 per 1,000.1 BrS is diagnosed in patients with ST-segment ...
Background: Conventional radiofrequency (RF) ablation for atrial fibrillation (AF) can cause significant patient discomfort even under mild conscious sedation (mCS), contributing to the predominant use of cryoablation (Cryo) for pulmonary vein isolation (PVI). We hypothesized that by reducing energy delivery ...
Clinically, bipolar electrograms (EGMs) are interpreted based on time and voltage characteristics such as amplitude and fractionation index. However, this discards much of the information within the signal. EGMs can also be analysed in the frequency and time-frequency domain. Omnipolar ...
Introduction: Characterising patient-specific atrial fibrillation (AF) phenotype may lead to individualised approaches and improve ablation outcomes. Our novel mapping approach based on signal recurrence plots has not previously been applied to whole chamber, bi-atrial recording of AF. Methods: Simultaneous bi-atrial 30...
Electrograms (EGMs) contain information in the frequency domain (FD) and time-frequency domain (TFD) that is not currently assessed clinically. Greater utilisation of this information could lead to improved understanding of the local electroarchitecture. The Langendorff perfusion system allows EGMs from ...
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