A5082879553- Cardiac Arrhythmias and Treatments
- Atrial Fibrillation Management and Outcomes
- Cardiac pacing and defibrillation studies
- Cardiac electrophysiology and arrhythmias
- Cardiovascular Effects of Exercise
- Health Systems, Economic Evaluations, Quality of Life
- Vascular anomalies and interventions
- Cardiac Structural Anomalies and Repair
- Diabetes, Cardiovascular Risks, and Lipoproteins
- Electronic Health Records Systems
- EEG and Brain-Computer Interfaces
- Lipoproteins and Cardiovascular Health
- Venous Thromboembolism Diagnosis and Management
- Central Venous Catheters and Hemodialysis
- Voice and Speech Disorders
- Lipid metabolism and disorders
- Biomedical and Chemical Research
- Cardiac Health and Mental Health
- Takotsubo Cardiomyopathy and Associated Phenomena
- ECG Monitoring and Analysis
- Cardiovascular Function and Risk Factors
- Quality and Safety in Healthcare
- Electroconvulsive Therapy Studies
- Gastroesophageal reflux and treatments
- Diet and metabolism studies
St George’s University Hospitals NHS Foundation Trust
2015-2023
University Health Network
2023
Toronto General Hospital
2023
University of Toronto
2023
St George's Hospital
2012-2022
St George's Hospital
2012-2021
St George's, University of London
2013-2020
Imperial College London
2015-2019
Somerset Hospital
2010
Southmead Hospital
2008
Thermal injury to the oesophagus is an important cause of life-threatening complication after ablation for atrial fibrillation (AF). protection oesophageal lumen by infusing cold liquid reduces thermal a limited extent. We tested ability more powerful method temperature control reduce incidence injury.A single-centre, prospective, double-blinded randomized trial was used investigate ensoETM device protect from injury. This compared in 1:1 randomization with group standard practice utilizing...
Background Maintenance of atrial fibrillation (AF) is related to electrical inhomogeneity and resultant chaotic reentry. Our aim was test the hypothesis that abnormalities P morphology on surface electrocardiogram (ECG) predict recurrent AF following cardioversion (ECV). Methods A 12‐lead ECG recorded after ECV for persistent in 77 patients (51 men, 65 ± 10 years) repeated 1 month later. P‐wave duration obtained each lead using blinded on‐screen measurement. Maximum (P‐max) defined as...
Abstract Introduction The ganglionated plexuses (GPs) of the intrinsic cardiac autonomic system are implicated in arrhythmogenesis. GP localization by stimulation epicardial fat pads to produce atrioventricular dissociating (AVD) effects is well described. We determined anatomical distribution left atrial GPs that influence (AV) dissociation. Methods and Results High frequency was delivered through a Smart‐Touch catheter atrium patients undergoing fibrillation (AF) ablation. Three...
Non-laser-based methods are safe in lead extraction but the past have been less effective than laser methods. In decade, new equipment has introduced including Evolution® Mechanical Dilator Sheath and RL. We sought to determine impact of on outcome mechanical extraction.We considered 288 consecutive patients (age 66 ± 18 years) who underwent transvenous (TLE) 522 leads decade end 2014. Three groups were identified: Group 1 (pre-Evolution® period, 76 patients, 133 leads), 2 (original 115 221...
The Biosense Webster ThermoCool® SmartTouch® Surround Flow (STSF) catheter is a recently developed ablation incorporating (SF) technology to ensure efficient cooling and force sensing quantify tissue contact. In our unit, it superseded the SF from time of its introduction in May 2015. Procedure-related data were collected prospectively for first 100 procedures performed department using STSF catheter. From database 654 unit catheter, we selected one match each procedure, matching procedure...
Abstract Aims Restoring sinus rhythm (SR) by ablation alone is an endpoint used in radiofrequency (RF) for long-standing persistent atrial fibrillation (AF) but not with cryotherapy. The simultaneous use of two cryotherapy catheters can improve efficiency; we compared this RF chronic AF aiming termination to SR alone. Methods and results Consecutive patients undergoing their first >6 months duration were screened. A total 100 participants randomized 1:1 multi-catheter or RF. For...
Cryotherapy for Simultaneous CTI Ablation and PVI Introduction Pulmonary vein isolation (PVI) cavotricuspid isthmus (CTI) ablation are often performed as part of the same procedure. In many cases, is by cryotherapy then radiofrequency (RF) energy. We sought to determine whether it more efficient perform simultaneously with using separate cryogenerators. Methods Results cryoablation during Arctic Front cryoballoon in 25 consecutive patients clinical indications both (PVI/CTI‐cryo group)....
Skin burns are a rare complication associated with radiofrequency catheter ablation of cardiac arrhythmias. Burns related to the indifferent electrode patch may be severe and result in significant comorbidity. We describe our experience skin discuss potential predisposing possible causative factors.
Small series has shown that cardiac resynchronisation therapy (CRT) can be achieved in a majority of patients using exclusively cephalic venous access. We sought to determine whether this method is suitable for widespread use.A group 19 operators including 11 trainees three pacing centres attempted use access alone all CRT device implants over period 8 years. The route each lead, the procedure outcome, duration, and complications were collected prospectively. Data also 105 consecutive...
To investigate the utility of simultaneous multi-catheter cryotherapy for treatment APs that were previously resistant to standard radiofrequency (RF) catheter ablation. Catheter ablation is established in accessory pathways (AP), with high rates permanent procedural success a single attempt. However, there are still instances acute failure and AP recurrences RF methods. Seven consecutive cases pre-excitation syndromes prior failed had novel treatment. Cryotherapy was delivered using two 8...
Abstract Background Cardiac resynchronization therapy‐defibrillator (CRT‐D) implantation via the cephalic vein is feasible and safe. Recent evidence has suggested a higher implantable cardioverter‐defibrillator (ICD) lead failure in multi‐lead defibrillator therapy route. We evaluated relationship between CRT‐D ICD failure. Methods Data was collected from three implanting centers October 2008 September 2017. In total 633 patients were included. Patient characteristics with recorded....
ABSTRACT Background Thermal injury to the esophagus is a known complication of ablation for atrial fibrillation (AF) and accounts most procedure-related mortality. protection esophageal lumen by infusing cold liquid can reduce thermal limited extent. A method control local luminal temperature investigated this study. Objective To investigate ability powerful device protect from ablation-related injury. Methods single-center, prospective, double-blinded randomized controlled trial was used...