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160 results on '"Lefroy, D."'

1. The European Rare Disease Network for HHT Frameworks for management of hereditary haemorrhagic telangiectasia in general and speciality care

Author

Shovlin, C.L., Buscarini, E., Sabbà, C., Mager, H.J., Kjeldsen, A.D., Pagella, F., Sure, U., Ugolini, S., Torring, P.M., Suppressa, P., Rennie, C., Post, M.C., Patel, M.C., Nielsen, T.H., Manfredi, G., Lenato, G.M., Lefroy, D., Kariholu, U., Jones, B., Fialla, A.D., Eker, O.F., Dupuis, O., Droege, F., Coote, N., Boccardi, E., Alsafi, A., Alicante, S., and Dupuis-Girod, S.

Published
2022
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2. Atrial fibrillation organisation correlates with ventricular response regularity in patients with persistent atrial fibrillation

Author

Ahsan, N, primary, Sau, A, additional, Neerahoo, R, additional, Qureshi, N, additional, Koa-Wing, M, additional, Keene, D, additional, Malcolme-Lawes, L, additional, Lefroy, D C, additional, Linton, N W F, additional, Lim, P B, additional, Varnava, A, additional, Whinnett, Z I, additional, Kanagaratnam, P, additional, Peters, N S, additional, and Ng, F S, additional

Published
2023
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3. Impact of left ventricular scar burden on response to two different modalities of conduction system CRT

Author

Ali, N A D I N E, primary, Arnold, A D, additional, Miyazawa, A A A, additional, Keene, D, additional, Chow, J J, additional, Peters, N S, additional, Kanagaratnam, P, additional, Qureshi, N, additional, Ng, F S, additional, Lefroy, D, additional, Francis, D P, additional, Shun-Shin, M, additional, Cole, G D, additional, and Whinnett, Z I, additional

Published
2023
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4. The European Rare Disease Network for HHT Frameworks for management of hereditary haemorrhagic telangiectasia in general and speciality care

Author

Verpleegafdeling Cardiologie, Team Medisch, Circulatory Health, Shovlin, C. L., Buscarini, E., Sabbà, C., Mager, H. J., Kjeldsen, A. D., Pagella, F., Sure, U., Ugolini, S., Torring, P. M., Suppressa, P., Rennie, C., Post, M. C., Patel, M. C., Nielsen, T. H., Manfredi, G., Lenato, G. M., Lefroy, D., Kariholu, U., Jones, B., Fialla, A. D., Eker, O. F., Dupuis, O., Droege, F., Coote, N., Boccardi, E., Alsafi, A., Alicante, S., Dupuis-Girod, S., Verpleegafdeling Cardiologie, Team Medisch, Circulatory Health, Shovlin, C. L., Buscarini, E., Sabbà, C., Mager, H. J., Kjeldsen, A. D., Pagella, F., Sure, U., Ugolini, S., Torring, P. M., Suppressa, P., Rennie, C., Post, M. C., Patel, M. C., Nielsen, T. H., Manfredi, G., Lenato, G. M., Lefroy, D., Kariholu, U., Jones, B., Fialla, A. D., Eker, O. F., Dupuis, O., Droege, F., Coote, N., Boccardi, E., Alsafi, A., Alicante, S., and Dupuis-Girod, S.

Published
2022

7. Non-invasive detection of exercise-induced cardiac conduction abnormalities in sudden cardiac death survivors in the inherited cardiac conditions

Author

Leong, KMW, Ng, FS, Shun-Shin, MJ, Koa-Wing, M, Qureshi, N, Whinnett, ZI, Linton, NF, Lefroy, D, Francis, DP, Harding, SE, Davies, DW, Peter, NS, Lim, PB, Behr, E, Lambiase, PD, Varnava, A, and Kanagaratnam, P

Subjects
parasitic diseases
Abstract

AIMS : Rate adaptation of the action potential ensures spatial heterogeneities in conduction across the myocardium are minimized at different heart rates providing a protective mechanism against ventricular fibrillation (VF) and sudden cardiac death (SCD), which can be quantified by the ventricular conduction stability (V-CoS) test previously described. We tested the hypothesis that patients with a history of aborted SCD due to an underlying channelopathy or cardiomyopathy have a reduced capacity to maintain uniform activation following exercise. METHODS AND RESULTS : Sixty individuals, with (n = 28) and without (n = 32) previous aborted-SCD event underwent electro-cardiographic imaging recordings following exercise treadmill test. These included 25 Brugada syndrome, 13 hypertrophic cardiomyopathy, 12 idiopathic VF, and 10 healthy controls. Data were inputted into the V-CoS programme to calculate a V-CoS score that indicate the percentage of ventricle that showed no significant change in ventricular activation, with a lower score indicating the development of greater conduction heterogeneity. The SCD group, compared to those without, had a lower median (interquartile range) V-CoS score at peak exertion [92.8% (89.8-96.3%) vs. 97.3% (94.9-99.1%); P

Published
2021

8. Septal late gadolinium enhancement on Cardiac MRI predicts failure to achieve left bundle pacing

Author

Ali, NADINE, primary, Arnold, AD, additional, Miyazawa, AA, additional, Keene, D, additional, Peters, NS, additional, Kanagaratnam, P, additional, Qureshi, N, additional, Ng, FS, additional, Linton, N, additional, Lefroy, D, additional, Francis, D, additional, Lim, PB, additional, Whinnett, ZI, additional, Kellman, P, additional, and Cole, GD, additional

Published
2021
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9. Voltage during atrial fibrillation is superior to voltage during sinus rhythm in localizing areas of delayed enhancement on magnetic resonance imaging: An assessment of the posterior left atrium in patients with persistent atrial fibrillation

Author

Qureshi, N, Kim, S, Cantwell, C, Afonso, V, Bai, WJ, Ali, R, Shun-Shin, M, Louisa, M-L, Luther, V, Leong, K, Lim, E, Wright, I, Nagy, S, Hayat, S, Ng, FS, Koa-Wing, M, Linton, N, Lefroy, D, Whinnett, Z, Davies, DW, Kanagaratnam, P, Peters, N, Lim, PB, British Heart Foundation, Rosetrees Trust, Imperial College Healthcare NHS Trust- BRC Funding, Wellcome Trust, Hansen Medical, Inc, St Jude Medical UK Ltd, and Medical Research Council (MRC)

Subjects
Male, Cardiac & Cardiovascular Systems, ROTORS, Magnetic Resonance Imaging, Cine, Article, Magnetic resonance imaging, 0903 Biomedical Engineering, Humans, Heart Atria, Atrial fibrillation voltage, Correlation of Data, 1102 Cardiorespiratory Medicine and Haematology, Science & Technology, LESIONS, ASSOCIATION, QUANTIFICATION, Atrial fibrosis, Middle Aged, Atrial fibrillation, Fibrosis, SCAR, Cardiovascular System & Hematology, Cardiovascular System & Cardiology, Catheter Ablation, Female, TACHYCARDIA, Electrophysiologic Techniques, Cardiac, Life Sciences & Biomedicine, INTEGRATION, MRI
Abstract

Background Bipolar electrogram voltage during sinus rhythm (VSR) has been used as a surrogate for atrial fibrosis in guiding catheter ablation of persistent atrial fibrillation (AF), but the fixed rate and wavefront characteristics present during sinus rhythm may not accurately reflect underlying functional vulnerabilities responsible for AF maintenance. Objective The purpose of this study was determine whether, given adequate temporal sampling, the spatial distribution of mean AF voltage (VmAF) better correlates with delayed-enhancement magnetic resonance imaging (MRI-DE)–detected atrial fibrosis than VSR. Methods AF was mapped (8 seconds) during index ablation for persistent AF (20 patients) using a 20-pole catheter (660 ± 28 points/map). After cardioversion, VSR was mapped (557 ± 326 points/map). Electroanatomic and MRI-DE maps were co-registered in 14 patients. Results The time course of VmAF was assessed from 1–40 AF cycles (∼8 seconds) at 1113 locations. VmAF stabilized with sampling >4 seconds (mean voltage error 0.05 mV). Paired point analysis of VmAF from segments acquired 30 seconds apart (3667 sites; 15 patients) showed strong correlation (r = 0.95; P

Published
2019

10. Laser doppler derived peripheral perfusion can distinguish haemodynamically tolerated VT from haemodynamically compromised VT

Author

Miyazawa, A, primary, Arnold, A, additional, Keene, D, additional, Shun-Shin, MJ, additional, Howard, JP, additional, Jelf, D, additional, Bangi, S, additional, Peters, NS, additional, Lefroy, D, additional, Lim, PB, additional, Ng, FS, additional, Linton, N, additional, Kanagaratnam, P, additional, Francis, DP, additional, and Whinnett, ZI, additional

Published
2021
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20. Quantification of Electromechanical Coupling to Prevent Inappropriate Implantable Cardioverter-Defibrillator Shocks

Author

Keene, D, Shun-Shin, M, Arnold, A, Howard, J, Lefroy, D, Davies, W, Lim, PB, Ng, FS, Koa-Wing, M, Qureshi, N, Linton, N, Shah, J, Peters, N, Kanagaratnam, P, Francis, D, Whinnett, Z, British Heart Foundation, Foundation for Circulatory Health, and Imperial College Healthcare NHS Trust- BRC Funding

Subjects
arrhythmia discrimination, implantable cardioverter-defibrillator, laser Doppler perfusion monitoring, hemodynamic monitoring, inappropriate therapy
Abstract

Objective To test specialised processing of laser Doppler signals for discriminating ventricular fibrillation(VF) from common causes of inappropriate therapies. Background Inappropriate ICD therapies remain a clinically important problem associated with morbidity and mortality. Tissue perfusion biomarkers, to assist automated diagnosis of VF, suffer the vulnerability of sometimes mistaking artefact and random noise for perfusion, which could lead to shocks being inappropriately withheld. Methods We developed a novel processing algorithm that combines electrogram data and laser Doppler perfusion monitoring, as a method for assessing circulatory status. We recruited 50 patients undergoing VF induction during ICD implantation. We recorded non-invasive laser Doppler and continuous electrograms, during both sinus-rhythm and VF. For each patient we simulated two additional scenarios that may lead to inappropriate shocks: ventricular-lead fracture and T-wave oversensing. We analysed the laser Doppler using three methods for reducing noise: (i)Running Mean, (ii)Oscillatory Height, (iii)a novel quantification of Electro-Mechanical coupling which gates laser Doppler against electrograms. We additionally tested the algorithm during exercise induced sinus tachycardia. Results Only the Electro-mechanical coupling algorithm found a clear perfusion cut-off between sinus rhythm and VF (sensitivity and specificity 100%). Sensitivity and specificity remained 100% during simulated lead fracture and electrogram oversensing. (AUC: Running Mean 0.91, Oscillatory Height 0.86, Electro-Mechanical Coupling 1.00). Sinus tachycardia did not cause false positives. Conclusions Quantifying the coupling between electrical and perfusion signals increases reliability of discrimination between VF and artefacts that ICDs may interpret as VF. Incorporating such methods into future ICDs may safely permit reductions of inappropriate shocks.

Published
2019

21. His resynchronization versus biventricular pacing in patients with heart failure and left bundle branch block

Author

Arnold, A, Shun-Shin, M, Keene, D, Howard, J, Sohaib, S, Wright, I, Cole, G, Qureshi, N, Lefroy, D, Koa-Wing, M, Linton, N, Lim, P, Peters, N, Davies, D, Muthumala, A, Tanner, M, Ellenbogen, K, Kanagaratnam, P, Francis, D, Whinnett, Z, British Heart Foundation, Foundation for Circulatory Health, and Wellcome Trust

Subjects
1117 Public Health And Health Services, Cardiovascular System & Hematology, cardiovascular system, cardiovascular diseases, 1102 Cardiovascular Medicine And Haematology
Abstract

Background His bundle pacing is a new method for delivering cardiac resynchronization therapy (CRT). Objectives The authors performed a head-to-head, high-precision, acute crossover comparison between His bundle pacing and conventional biventricular CRT, measuring effects on ventricular activation and acute hemodynamic function. Methods Patients with heart failure and left bundle branch block referred for conventional biventricular CRT were recruited. Using noninvasive epicardial electrocardiographic imaging, the authors identified patients in whom His bundle pacing shortened left ventricular activation time. In these patients, the authors compared the hemodynamic effects of His bundle pacing against biventricular pacing using a high-multiple repeated alternation protocol to minimize the effect of noise, as well as comparing effects on ventricular activation. Results In 18 of 23 patients, left ventricular activation time was significantly shortened by His bundle pacing. Seventeen patients had a complete electromechanical dataset. In them, His bundle pacing was more effective at delivering ventricular resynchronization than biventricular pacing: greater reduction in QRS duration (−18.6 ms; 95% confidence interval [CI]: −31.6 to −5.7 ms; p = 0.007), left ventricular activation time (−26 ms; 95% CI: −41 to −21 ms; p = 0.002), and left ventricular dyssynchrony index (−11.2 ms; 95% CI: −16.8 to −5.6 ms; p < 0.001). His bundle pacing also produced a greater acute hemodynamic response (4.6 mm Hg; 95% CI: 0.2 to 9.1 mm Hg; p = 0.04). The incremental activation time reduction with His bundle pacing over biventricular pacing correlated with the incremental hemodynamic improvement with His bundle pacing over biventricular pacing (R = 0.70; p = 0.04). Conclusions His resynchronization delivers better ventricular resynchronization, and greater improvement in hemodynamic parameters, than biventricular pacing.

Published
2018

25. P1829The magnitude of LV activation time reduction with His bundle pacing over biventricular pacing in LBBB predicts the incremental improvement in acute cardiac function

Author

Shun-Shin, M, primary, Arnold, A, additional, Keene, D, additional, Howard, J, additional, Sohaib, A, additional, Lim, P B, additional, Tanner, M, additional, Lefroy, D, additional, Peters, N, additional, Kanagaratnam, P, additional, Davies, D W, additional, Francis, D, additional, and Whinnett, Z, additional

Published
2018
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26. P3553Automated, high-precision echocardiographic and haemodynamic assessment of the effect of atrioventricular interval during right ventricular pacing in obstructed hypertrophic cardiomyopathy

Author

Arnold, A D, primary, Shun-Shin, M J, additional, Sohaib, A, additional, Chiew, K, additional, Howard, J P, additional, Keene, D, additional, Leong, K, additional, Ahmad, Y, additional, Cole, G, additional, Lefroy, D, additional, Kanagaratnam, P, additional, Varnava, A, additional, Francis, D P, additional, and Whinnett, Z I, additional

Published
2018
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27. P1146A novel automated cycle length algorithm allows rapid assessment of spatial distribution of AF cycle length in the persistent AF substrate

Author

Nagy, S, primary, Von Maydell, A M N, additional, Mann, I, additional, Afonso, V, additional, Kim, S, additional, Linton, N, additional, Lefroy, D, additional, Whinnett, Z, additional, Davies, W, additional, Ng, F S, additional, Koa-Wing, M, additional, Kanagaratnam, P, additional, Peters, N S, additional, Qureshi, N A, additional, and Lim, P B, additional

Published
2018
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29. 148The sawtooth EKG pattern of typical atrial flutter is not related to differences in conduction velocity around the flutter circuit

Author

Sau, A, primary, Sikkel, MB, additional, Luther, V, additional, Wright, I, additional, Guerrero, F, additional, Koa-Wing, M, additional, Lefroy, D, additional, Linton, N, additional, Qureshi, N, additional, Whinnett, Z, additional, Lim, PB, additional, Kanagaratnam, P, additional, Peters, N, additional, and Davies, DW, additional

Published
2017
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30. P1538Using high precision haemodynamic measurements to assess differences in AV optimum between different left ventricular lead positions in biventricular pacing

Author

Sohaib, S M A, primary, Shun-Shin, M., additional, Wright, I., additional, Lim, E., additional, Moore, P., additional, Lim, PB., additional, Koa Wing, M., additional, Lefroy, D., additional, Linton, N., additional, Davies, DW., additional, Peters, NS., additional, Kanagaratnam, P., additional, Francis, D., additional, and Whinnett, ZI., additional

Published
2017
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32. POSTERS (2)96CONTINUOUS VERSUS INTERMITTENT MONITORING FOR DETECTION OF SUBCLINICAL ATRIAL FIBRILLATION IN HIGH-RISK PATIENTS97HIGH DAY-TO-DAY INTRA-INDIVIDUAL REPRODUCIBILITY OF THE HEART RATE RESPONSE TO EXERCISE IN THE UK BIOBANK DATA98USE OF NOVEL GLOBAL ULTRASOUND IMAGING AND CONTINUEOUS DIPOLE DENSITY MAPPING TO GUIDE ABLATION IN MACRO-REENTRANT TACHYCARDIAS99ANTICOAGULATION AND THE RISK OF COMPLICATIONS IN PATIENTS UNDERGOING VT AND PVC ABLATION100NON-SUSTAINED VENTRICULAR TACHYCARDIA FREQUENTLY PRECEDES CARDIAC ARREST IN PATIENTS WITH BRUGADA SYNDROME101USING HIGH PRECISION HAEMODYNAMIC MEASUREMENTS TO ASSESS DIFFERENCES IN AV OPTIMUM BETWEEN DIFFERENT LEFT VENTRICULAR LEAD POSITIONS IN BIVENTRICULAR PACING102CAN WE PREDICT MEDIUM TERM MORTALITY FROM TRANSVENOUS LEAD EXTRACTION PRE-OPERATIVELY?103PREVENTION OF UNECESSARY ADMISSIONS IN ATRIAL FIBRILLATION104EPICARDIAL CATHETER ABLATION FOR VENTRICULAR TACHYCARDIA ON UNINTERRUPTED WARFARIN: A SAFE APPROACH?105HOW WELL DOES THE NATIONAL INSTITUTE OF CLINICAL EXCELLENCE (NICE) GUIDENCE ON TRANSIENT LOSS OF CONSCIOUSNESS (T-LoC) WORK IN A REAL WORLD? AN AUDIT OF THE SECOND STAGE SPECIALIST CARDIOVASCULAT ASSESSMENT AND DIAGNOSIS106DETECTION OF ATRIAL FIBRILLATION IN COMMUNITY LOCATIONS USING NOVEL TECHNOLOGY'S AS A METHOD OF STROKE PREVENTION IN THE OVER 65'S ASYMPTOMATIC POPULATION - SHOULD IT BECOME STANDARD PRACTISE?107HIGH-DOSE ISOPRENALINE INFUSION AS A METHOD OF INDUCTION OF ATRIAL FIBRILLATION: A MULTI-CENTRE, PLACEBO CONTROLLED CLINICAL TRIAL IN PATIENTS WITH VARYING ARRHYTHMIC RISK108PACEMAKER COMPLICATIONS IN A DISTRICT GENERAL HOSPITAL109CARDIAC RESYNCHRONISATION THERAPY: A TRADE-OFF BETWEEN LEFT VENTRICULAR VOLTAGE OUTPUT AND EJECTION FRACTION?110RAPID DETERIORATION IN LEFT VENTRICULAR FUNCTION AND ACUTE HEART FAILURE AFTER DUAL CHAMBER PACEMAKER INSERTION WITH RESOLUTION FOLLOWING BIVENTRICULAR PACING111LOCALLY PERSONALISED ATRIAL ELECTROPHYSIOLOGY MODELS FROM PENTARAY CATHETER MEASUREMENTS112EVALUATION OF SUBCUTANEOUS ICD VERSUS TRANSVENOUS ICD- A PROPENSITY MATCHED COST-EFFICACY ANALYSIS OF COMPLICATIONS & OUTCOMES113LOCALISING DRIVERS USING ORGANISATIONAL INDEX IN CONTACT MAPPING OF HUMAN PERSISTENT ATRIAL FIBRILLATION114RISK FACTORS FOR SUDDEN CARDIAC DEATH IN PAEDIATRIC HYPERTROPHIC CARDIOMYOPATHY: A SYSTEMATIC REVIEW AND META-ANALYSIS115EFFECT OF CATHETER STABILITY AND CONTACT FORCE ON VISITAG DENSITY DURING PULMONARY VEIN ISOLATION116HEPATIC CAPSULE ENHANCEMENT IS COMMONLY SEEN DURING MR-GUIDED ABLATION OF ATRIAL FLUTTER: A MECHANISTIC INSIGHT INTO PROCEDURAL PAIN117DOES HIGHER CONTACT FORCE IMPAIR LESION FORMATION AT THE CAVOTRICUSPID ISTHMUS? INSIGHTS FROM MR-GUIDED ABLATION OF ATRIAL FLUTTER118CLINICAL CHARACTERISATION OF A MALIGNANT SCN5A MUTATION IN CHILDHOOD119RADIOFREQUENCY ASSOCIATED VENTRICULAR FIBRILLATION120CONTRACTILE RESERVE EXPRESSED AS SYSTOLIC VELOCITY DOES NOT PREDICT RESPONSE TO CRT121DAY-CASE DEVICES - A RETROSPECTIVE STUDY USING PATIENT CODING DATA122PATIENTS UNDERGOING SVT ABLATION HAVE A HIGH INCIDENCE OF SECONDARY ARRHYTHMIA ON FOLLOW UP: IMPLICATIONS FOR PRE-PROCEDURE COUNSELLING123PROGNOSTIC ROLE OF HAEMOGLOBINN AND RED BLOOD CELL DITRIBUTION WIDTH IN PATIENTS WITH HEART FAILURE UNDERGOING CARDIAC RESYNCHRONIZATION THERAPY124REMOTE MONITORING AND FOLLOW UP DEVICES125A 20-YEAR, SINGLE-CENTRE EXPERIENCE OF IMPLANTABLE CARDIOVERTER DEFIBRILLATORS (ICD) IN CHILDREN: TIME TO CONSIDER THE SUBCUTANEOUS ICD?126EXPERIENCE OF MAGNETIC REASONANCE IMAGING (MEI) IN PATIENTS WITH MRI CONDITIONAL DEVICES127THE SINUS BRADYCARDIA SEEN IN ATHLETES IS NOT CAUSED BY ENHANCED VAGAL TONE BUT INSTEAD REFLECTS INTRINSIC CHANGES IN THE SINUS NODE REVEALED BY I (F) BLOCKADE128SUCCESSFUL DAY-CASE PACEMAKER IMPLANTATION - AN EIGHT YEAR SINGLE-CENTRE EXPERIENCE129LEFT VENTRICULAR INDEX MASS ASSOCIATED WITH ESC HYPERTROPHIC CARDIOMYOPATHY RISK SCORE IN PATIENTS WITH ICDs: A TERTIARY CENTRE HCM REGISTRY130A DGH EXPERIENCE OF DAY-CASE CARDIAC PACEMAKER IMPLANTATION131IS PRE-PROCEDURAL FASTING A NECESSITY FOR SAFE PACEMAKER IMPLANTATION?

Author

Philippsen, T., primary, Orini, M., primary, Martin, C.A., primary, Volkova, E., primary, Ormerod, J.O.M., primary, Sohaib, S.M.A., primary, Elamin, N., primary, Blake, Sarah, primary, Sawhney, V.S., primary, Ahmad, Saqib, primary, Waring, O.A.W., primary, Bowers, R.W., primary, Raiman, L., primary, Hazelwood, T.A.H., primary, Mills, R.K., primary, Corrado, C., primary, Honarbakhsh, S., primary, Von Maydell, A., primary, Norrish, G., primary, Chubb, H., primary, Toledano, M.T., primary, Ruiz, A., primary, van Zalen, J.J., primary, Foley, P.W., primary, Pearman, C.M., primary, Rehal, O., primary, Wong, L., primary, Brahmbhatt, D.H., primary, Khan, H., primary, Wardley, J., primary, Akbar, S., primary, Christensen, L.S., additional, Hansen, M.G., additional, Brandes, A., additional, Tinker, A., additional, Munroe, P.B., additional, Lambiase, P.D., additional, Honarbakhsh, S., additional, McLean, A., additional, Schilling, R.J., additional, Lane, J.D., additional, Chow, A., additional, Earley, M., additional, Hunter, R., additional, Khan, F., additional, Lambiase, P., additional, Sporton, S., additional, Dhinoja, M., additional, Camm, C.F., additional, Xavier, R., additional, de Sousa, M., additional, Betts, T.R., additional, Shun-Shin, M.J., additional, Wright, I., additional, Lim, E., additional, Lim, P.B., additional, Koawing, M., additional, Lefroy, D.C., additional, Linton, N.W.F., additional, Davies, D.W., additional, Peters, N.S., additional, Kanagaratnam, P., additional, Francis, D., additional, Whinnett, Z.I., additional, Khan, M., additional, Bowes, R., additional, Sahu, J., additional, Sheridan, P., additional, Rogers, D., additional, Kyriacou, A., additional, Kelland, N., additional, Lewis, N., additional, Lee, J., additional, Segall, E.T., additional, Diab, I., additional, Breitenstein, A.B., additional, Ullah, W.U., additional, Sporton, S.S., additional, Earley, M.E., additional, Finlay, M.F., additional, Dhinoja, M.D., additional, Schilling, R.J.S., additional, Hunter, R.H., additional, Ahmed, M, additional, Petkar, Sanjiv, additional, Davidson, N.C.D., additional, Stout, M.S., additional, Pearce, KP, additional, Leo, M., additional, Ginks, M.R., additional, Rajappan, K., additional, Bashir, Y., additional, Balasubramaniam, R.N., additional, Sopher, S.M., additional, Paisey, J.R., additional, Cheong, J., additional, Roy, D., additional, Adhya, S., additional, Williams, S., additional, O'Neill, M., additional, Niederer, S., additional, Providencia, R., additional, Srinivasan, N., additional, Ahsan, S., additional, Lowe, M., additional, Segal, O., additional, Hunter, R.J., additional, Finlay, M., additional, Earley, M.J., additional, Stella, S.E., additional, Cantwell, C.D., additional, Chowdhury, R.A., additional, Kim, S., additional, Linton, N., additional, Whinnett, Z., additional, Koa-Wing, M., additional, Lefroy, D., additional, Davies, D. Wyn, additional, Lim, P. Boon, additional, Qureshi, N., additional, Cantarutti, N.C., additional, Limongelli, G., additional, Elliott, P., additional, Kaski, J.P., additional, Williams, S.E., additional, Lal, K., additional, Harrison, J., additional, Whitaker, J., additional, Kiedrowicz, R., additional, Wright, M., additional, Schaeffter, T., additional, Razavi, R., additional, Karim, R., additional, Montanes, M.E.M., additional, Ella Field, E.F., additional, Walsh, H.W., additional, Callaghan, N.C., additional, Till, J.T., additional, Mangat, J.M., additional, Lowe, M.L., additional, Kaski, J.P.K., additional, Ruiz Duthil, A.D., additional, Li, A., additional, Saba, M.M., additional, Patel, N., additional, Beale, L., additional, Brickley, G, additional, Lloyd, G., additional, French, A., additional, Khavandi, A., additional, McCrea, W., additional, Barnes, E., additional, Chandrasekaran, B., additional, Parry, J., additional, Garth, L., additional, Chapman, J., additional, Todd, D., additional, Hobbs, J., additional, Modi, S., additional, Waktare, J., additional, Hall, M., additional, Gupta, D., additional, Snowdon, R., additional, Papageorgiou, N., additional, Providência, R., additional, Falconer, D., additional, Sewart, E., additional, Segal, O.R., additional, Ezzat, V., additional, Rowland, E., additional, Swift, M., additional, Charlton, P., additional, James, J., additional, Colling, A., additional, Starling, L., additional, Kontogeorgis, A., additional, Roses-Noguer, F., additional, Wong, T., additional, Jarman, J., additional, Clague, J., additional, Till, J., additional, Hawkins, M., additional, Burnell, S., additional, Coulson, J., additional, Smith, L.C., additional, Choudhury, M., additional, Oguguo, E., additional, Boyett, M., additional, Morris, G.M., additional, Flinn, W.L., additional, Chari, A., additional, Belham, M.R.D., additional, Pugh, P.J., additional, Somarakis, K, additional, Parasa, R, additional, Allata, A, additional, Hashim, H, additional, Mathew, T, additional, Kayasundar, S., additional, Venables, P., additional, Quinn, J., additional, Ivanova, J., additional, Brown, S., additional, Oliver, R., additional, Lyons, M., additional, Chuen, M., additional, Walsh, J., additional, Robinson, T., additional, Staniforth, A., additional, Ahsan, A., additional, and Jamil-Copley, S., additional

Published
2016
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33. A RAPID ACCESS ARRHYTHMIA CLINIC FOR THE DIAGNOSIS AND MANAGEMENT OF ARRHYTHMIAS IN THE POPULATION

Author

Martins, J L., Fox, K F., Wood, D A., Lefroy, D C., and Peters, N S.

Subjects
Care and treatment, Services, Cardiologists -- Services, Arrhythmia -- Care and treatment, Ambulatory care facilities -- Services, Clinics -- Services
Abstract

Introduction: The diagnosis of cardiac arrhythmias can be difficult in primary care without access to specialist cardiac investigations. Given the natural history of paroxysmal arrhythmias, it seems intuitive that prompt [...]

Published
2001

34. Mobile Right Atrial Thrombi in a Patient with the Hemoglobin SC Disease

Author

Savage, H. O., Ding, N., Eso, O., Sachdev, B., and Lefroy, D. L.

Subjects
Article Subject, education, cardiovascular system, cardiovascular diseases, circulatory and respiratory physiology
Abstract

The formation of Intracardiac thrombi is rare in the absence of structural heart disease or atrial fibrillation. We describe a case of spontaneous right atrial thrombus formation that occurred in a patient with a hypercoagulable condition who had been sub optimally anticoagulated.

Published
2011
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35. Young Investigators Competition1Left ventricular lead position, mechanical activation and myocardial scar in relation to the clinical outcome of cardiac resynchronisation therapy: the role of feature-tracking and contrast-enhanced cardiovascular magnetic resonance2Does the haemodynamic improvement of biventricular pacing truly arise from cardiac resynchronisation? quantifying the contribution of av and vv adjustment3Differential relationship of electrical delay with endocardial and epicardial left ventricular leads for cardiac resynchronisation therapy4Characterisation of the persistent af substrate through the assessment of electrophysiologic parameters in the organised vs. disorganised rhythm5Targeting cyclical highest dominant frequency in the ablation of persistent atrial fibrillation6Feasibility of fully mr-guided ablation with active tracking: from pre-clinical to clinical application

Author

Taylor, R.J., primary, Sohaib, S.M.A., primary, Gamble, J.H.P., primary, Qureshi, N.A., primary, Chu, G.S., primary, Chubb, H., primary, Umar, F., additional, Stegemann, B., additional, Leyva, F., additional, Wright, I., additional, Lim, E., additional, Koawing, M., additional, Lim, P.B., additional, Moore, P., additional, Linton, N., additional, Lefroy, D.C., additional, Davies, D.W, additional, Peters, N.S., additional, Kanagaratnam, P., additional, Francis, D.P., additional, Whinnett, Z.I., additional, Khiani, R., additional, Herring, N., additional, Foley, P.W.X., additional, Ginks, M.R., additional, Rajappan, K., additional, Bashir, Y., additional, Betts, T.R., additional, Kim, S.J., additional, Cantwell, C., additional, Ali, R., additional, Roney, C., additional, Shun-Shin, M., additional, Ng, F.S., additional, Lefroy, D., additional, Whinnett, Z., additional, Li, X., additional, Vanheusden, F.J., additional, Almeida, T.P., additional, Salinet, J.L., additional, Dastagir, N., additional, Varanasi, S.S., additional, Chin, S.H., additional, Siddiqui, S., additional, Man, S.H., additional, Stafford, P.J., additional, Sandilands, A.J., additional, Schlindwein, F.S., additional, Ng, G.A., additional, Harrison, J., additional, Williams, S.E., additional, Whitaker, J., additional, Weiss, S., additional, Krueger, S., additional, Stenzel, G., additional, Schaeffter, T., additional, Razavi, R., additional, and O'Neill, M., additional

Published
2015
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38. 24Acute and long-term outcomes for patients undergoing radiofrequency catheter ablation of scar-related ventricular tachycardia by robotic catheter navigation

Author

Luther, V., primary, Jamil-Copley, S., additional, Shun-Shin, M., additional, Koa-Wing, M., additional, Wright, I., additional, Hayat, S., additional, Linton, N., additional, Lim, P.B., additional, Lefroy, D., additional, Whinnett, Z., additional, Davies, D.W., additional, Peters, N.S., additional, and Kanagaratnam, P., additional

Published
2014
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39. ABSTRACTS FOR ORAL PRESENTATION, SESSION 3, HRC 2013

Author

Lee, G., primary, Hunter, R., additional, Lovell, M., additional, Finlay, M., additional, Sawhney, V., additional, Ullah, W., additional, Diab, I., additional, Dhinoja, M., additional, Earley, M., additional, Sporton, S., additional, Schilling, R. J., additional, Williams, S. E., additional, Linton, N. W. F., additional, Harrison, J., additional, Wright, M., additional, O'Neill, M., additional, Jamil-Copley, S., additional, Linton, N., additional, Koa-Wing, M., additional, Lim, P. B., additional, Hayat, S., additional, Qureshi, N., additional, Whinnett, Z., additional, Davies, W., additional, Peters, N., additional, Francis, D., additional, Kanagaratnam, P., additional, Ryan, B., additional, Kojodjojo, P., additional, Kyriacou, A., additional, Sandler, B., additional, Sohaib, A., additional, Wright, I., additional, Qureshi, N. A., additional, Bai, W., additional, Ariff, B., additional, Williams, A., additional, Monro, C., additional, Kim, S., additional, Kao-Wing, M., additional, Fu, N. S., additional, Davies, D. W., additional, Lefroy, D., additional, Peters, N. S., additional, Ryan, M. J., additional, Ezzat, V. A., additional, O'Leary, J., additional, Bull, C., additional, Chow, A., additional, Lambiase, P., additional, Lowe, M. D., additional, Anwar, A. S., additional, Collitt, S., additional, Iddon, P., additional, Rice, N., additional, Dodd, M., additional, Dunsdale, A., additional, Petkar, S., additional, Mudd, J., additional, Linker, N., additional, Fitzpatrick, A. P., additional, Fraser, S., additional, Choo, W. K., additional, Padfield, G., additional, Rushworth, G., additional, Bloe, C., additional, Forsyth, P., additional, Cross, S. J., additional, Leslie, S. J., additional, Phan, T. T., additional, Dewhurst, M., additional, Lee, D., additional, Williams, D., additional, James, S., additional, Thornley, A., additional, de Belder, M., additional, Turley, A., additional, Campbell, N. G., additional, Cantor, E., additional, Duncan, E. R., additional, Demartini, C., additional, Baker, V., additional, Diab, I. G., additional, Earley, M. J., additional, Davies, L. C., additional, Pettit, S. J., additional, Randles, D. A., additional, Shaw, M., additional, Hawkins, N. M., additional, Wright, D. J., additional, Lambiase, P. D., additional, Barr, C., additional, Knops, R., additional, Neuzil, P., additional, Theuns, D., additional, Johansen, J. B., additional, Hood, M., additional, Pederson, S., additional, Reeve, H. L., additional, and Boersma, L., additional

Published
2013
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40. POSTER SESSION 2, HRC 2011

Author

Shetty, A. K., primary, Mehta, P. A., additional, Squirrel, M., additional, Bostock, J., additional, Rinaldi, C. A., additional, Wright, G. A., additional, Lines, I., additional, Tomlinson, D. R., additional, Haywood, G. A., additional, Shetty, A. K., additional, Neiderer, S., additional, Ginks, M., additional, Duckett, S. G., additional, Ma, Y., additional, Chen, Z., additional, Sohal, M., additional, Mehta, P., additional, Kapetanakis, S., additional, Carr-White, G., additional, Kyriacou, A., additional, Pabari, P., additional, Lefroy, D., additional, Davies, D. W., additional, Peters, N., additional, Kanagaratnam, P., additional, Mayet, J., additional, Hughes, A., additional, Francis, D. P., additional, Whinnett, Z. I., additional, Khoo, C. W., additional, Krishnamoorthy, S., additional, Dwivedi, G., additional, Lip, G. Y. H., additional, Lim, H. S., additional, Nallur Shivu, G., additional, Brooks, V., additional, Johns, M. J., additional, Bleasdale, R. A., additional, Yung, L. T. M., additional, Wilson, S., additional, Slade, A. K. B., additional, Johnston, R. T., additional, Chernyshev, A. A., additional, Kovalev, I. A., additional, Zavadovsky, K. V., additional, Popov, S. V., additional, Garg, P., additional, Khan, I., additional, and Douglas, H., additional

Published
2011
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41. Pulmonary venous isolation by antral ablation with a large cryoballoon for treatment of paroxysmal and persistent atrial fibrillation: medium-term outcomes and non-randomised comparison with pulmonary venous isolation by radiofrequency ablation

Author

Kojodjojo, P., primary, O'Neill, M. D., additional, Lim, P. B., additional, Malcolm-Lawes, L., additional, Whinnett, Z. I., additional, Salukhe, T. V., additional, Linton, N. W., additional, Lefroy, D., additional, Mason, A., additional, Wright, I., additional, Peters, N. S., additional, Kanagaratnam, P., additional, and Davies, D. W., additional

Published
2010
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