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EHRA/EAPCI expert consensus statement on catheter-based left atrial appendage occlusion - an update.

Glikson M, Wolff R, Hindricks G, Mandrola J, Camm AJ, Lip GYH, Fauchier L, Betts TR, Lewalter T, Saw J, Tzikas A, Sternik L, Nietlispach F, Berti S, Sievert H, Bertog S, Meier B; ESC Scientific Document Group .

Europace. 2019 Aug 31. pii: euz258. doi: 10.1093/europace/euz258. [Epub ahead of print] No abstract available.


EHRA/EAPCI expert consensus statement on catheter-based left atrial appendage occlusion - an update.

Glikson M, Wolff R, Hindricks G, Mandrola J, Camm AJ, Lip GYH, Fauchier L, Betts TR, Lewalter T, Saw J, Tzikas A, Sternik L, Nietlispach F, Berti S, Sievert H, Bertog S, Meier B.

EuroIntervention. 2019 Aug 31. pii: EIJY19M08_01. doi: 10.4244/EIJY19M08_01. [Epub ahead of print] No abstract available.


Targeting Nonpulmonary Vein Sources in Persistent Atrial Fibrillation Identified by Noncontact Charge Density Mapping.

Willems S, Verma A, Betts TR, Murray S, Neuzil P, Ince H, Steven D, Sultan A, Heck PM, Hall MC, Tondo C, Pison L, Wong T, Boersma LV, Meyer C, Grace A.

Circ Arrhythm Electrophysiol. 2019 Jul;12(7):e007233. doi: 10.1161/CIRCEP.119.007233. Epub 2019 Jun 27.


Rationale and design of the PRAETORIAN-DFT trial: A prospective randomized CompArative trial of SubcutanEous ImplanTable CardiOverter-DefibrillatoR ImplANtation with and without DeFibrillation testing.

Quast ABE, Baalman SWE, Betts TR, Boersma LVA, Bonnemeier H, Boveda S, Brouwer TF, Burke MC, Delnoy PPHM, El-Chami M, Kuschyk J, Lambiase P, Marquie C, Miller MA, Smeding L, Wilde AAM, Knops RE.

Am Heart J. 2019 Aug;214:167-174. doi: 10.1016/j.ahj.2019.05.002. Epub 2019 May 16.


Myocardial Perfusion Is Impaired and Relates to Cardiac Dysfunction in Patients With Atrial Fibrillation Both Before and After Successful Catheter Ablation.

Wijesurendra RS, Liu A, Notaristefano F, Ntusi NAB, Karamitsos TD, Bashir Y, Ginks M, Rajappan K, Betts TR, Jerosch-Herold M, Ferreira VM, Neubauer S, Casadei B.

J Am Heart Assoc. 2018 Aug 7;7(15):e009218. doi: 10.1161/JAHA.118.009218.


Guidance for Optimal Site Selection of a Leadless Left Ventricular Endocardial Electrode Improves Acute Hemodynamic Response and Chronic Remodeling.

Sieniewicz BJ, Behar JM, Gould J, Claridge S, Porter B, Sidhu BS, Niederer S, Betts TR, Webster D, James S, Turley AJ, Rinaldi CA.

JACC Clin Electrophysiol. 2018 Jul;4(7):860-868. doi: 10.1016/j.jacep.2018.03.011. Epub 2018 May 2.


Thrombo-embolic events in left ventricular endocardial pacing: long-term outcomes from a multicentre UK registry.

Sawhney V, Domenichini G, Gamble J, Furniss G, Panagopoulos D, Lambiase P, Rajappan K, Chow A, Lowe M, Sporton S, Earley MJ, Dhinoja M, Campbell N, Hunter RJ, Haywood G, Betts TR, Schilling RJ.

Europace. 2018 Dec 1;20(12):1997-2002. doi: 10.1093/europace/euy107.


Effect of Different Cutpoints for Defining Success Post-Catheter Ablation for Persistent Atrial Fibrillation: A Substudy of the STAR AF II Trial.

Conti S, Jiang CY, Betts TR, Chen J, Deisenhofer I, Mantovan R, Macle L, Morillo CA, Haverkamp W, Weerasooriya R, Albenque JP, Nardi S, Menardi E, Novak P, Sanders P, Verma A.

JACC Clin Electrophysiol. 2017 May;3(5):522-523. doi: 10.1016/j.jacep.2016.12.006. Epub 2017 May 15. No abstract available.


Management of Tamponade Complicating Catheter Ablation for Atrial Fibrillation: Early Removal of Pericardial Drains Is Safe and Effective and Reduces Analgesic Requirements and Hospital Stay Compared to Conventional Delayed Removal.

Pedersen MEF, Leo M, Kalla M, Malhotra A, Stone M, Wong K, Rajappan K, Ginks M, Betts TR, Bashir Y.

JACC Clin Electrophysiol. 2017 Apr;3(4):367-373. doi: 10.1016/j.jacep.2016.09.016. Epub 2016 Nov 30.


Incidence of pericardial effusion after left atrial appendage closure: The impact of underlying heart rhythm-Data from the EWOLUTION study.

Schmidt B, Betts TR, Sievert H, Bergmann MW, Kische S, Pokushalov E, Schmitz T, Meincke F, Mazzone P, Stein KM, Ince H, Boersma LVA.

J Cardiovasc Electrophysiol. 2018 Jul;29(7):973-978. doi: 10.1111/jce.13626. Epub 2018 May 21.


Acute electrical and hemodynamic effects of endocardial biventricular pacing using the WiSE CRT system and conventional epicardial biventricular pacing.

Leo M, Webster D, Betts TR.

J Arrhythm. 2017 Dec 21;34(1):87-89. doi: 10.1002/joa3.12019. eCollection 2018 Feb.


Electrical latency predicts the optimal left ventricular endocardial pacing site: results from a multicentre international registry.

Sieniewicz BJ, Behar JM, Sohal M, Gould J, Claridge S, Porter B, Niederer S, Gamble JHP, Betts TR, Jais P, Derval N, Spragg DD, Steendijk P, van Gelder BM, Bracke FA, Rinaldi CA.

Europace. 2018 Dec 1;20(12):1989-1996. doi: 10.1093/europace/euy052.


Endocardial left ventricular pacing across the interventricular septum for cardiac resynchronization therapy: Clinical results of a pilot study.

Gamble JHP, Herring N, Ginks MR, Rajappan K, Bashir Y, Betts TR.

Heart Rhythm. 2018 Jul;15(7):1017-1022. doi: 10.1016/j.hrthm.2018.02.032. Epub 2018 Mar 2.


Real-world safety and efficacy of WATCHMAN LAA closure at one year in patients on dual antiplatelet therapy: results of the DAPT subgroup from the EWOLUTION all-comers study.

Bergmann MW, Ince H, Kische S, Schmitz T, Meincke F, Schmidt B, Foley D, Betts TR, Grygier M, Protopopov AV, Stein KM, Boersma LVA.

EuroIntervention. 2018 Apr 20;13(17):2003-2011. doi: 10.4244/EIJ-D-17-00672.


Safety and efficacy of early anticoagulation drug regimens after WATCHMAN left atrial appendage closure: three-month data from the EWOLUTION prospective, multicentre, monitored international WATCHMAN LAA closure registry.

Bergmann MW, Betts TR, Sievert H, Schmidt B, Pokushalov E, Kische S, Schmitz T, Meincke F, Stein KM, Boersma LVA, Ince H.

EuroIntervention. 2017 Sep 20;13(7):877-884. doi: 10.4244/EIJ-D-17-00042.


Cost-Effectiveness Analysis of Quadripolar Versus Bipolar Left Ventricular Leads for Cardiac Resynchronization Defibrillator Therapy in a Large, Multicenter UK Registry.

Behar JM, Chin HM, Fearn S, Ormerod JO, Gamble J, Foley PW, Bostock J, Claridge S, Jackson T, Sohal M, Antoniadis AP, Razavi R, Betts TR, Herring N, Rinaldi CA.

JACC Clin Electrophysiol. 2017 Feb;3(2):107-116. doi: 10.1016/j.jacep.2016.04.009.


Endocardial left ventricular pacing for cardiac resynchronization: systematic review and meta-analysis.

Gamble JHP, Herring N, Ginks M, Rajappan K, Bashir Y, Betts TR.

Europace. 2018 Jan 1;20(1):73-81. doi: 10.1093/europace/euw381. Review.


Impact of acute atrial fibrillation termination and prolongation of atrial fibrillation cycle length on the outcome of ablation of persistent atrial fibrillation: A substudy of the STAR AF II trial.

Kochhäuser S, Jiang CY, Betts TR, Chen J, Deisenhofer I, Mantovan R, Macle L, Morillo CA, Haverkamp W, Weerasooriya R, Albenque JP, Nardi S, Menardi E, Novak P, Sanders P, Verma A; STAR AF II Investigators.

Heart Rhythm. 2017 Apr;14(4):476-483. doi: 10.1016/j.hrthm.2016.12.033. Epub 2016 Dec 21.


Percutaneous left atrial appendage occlusion using different technologies in the United Kingdom: A multicenter registry.

Betts TR, Leo M, Panikker S, Kanagaratnam P, Koa-Wing M, Davies DW, Hildick-Smith D, Wynne DG, Ormerod O, Segal OR, Chow AW, Todd D, Cabrera Gomez S, Kirkwood GJ, Fox D, Pepper C, Foran J, Wong T.

Catheter Cardiovasc Interv. 2017 Feb 15;89(3):484-492. doi: 10.1002/ccd.26782. Epub 2016 Sep 21.


Premature termination of radiofrequency delivery during pulmonary vein isolation due to oesophageal temperature alerts: impact on acute and chronic pulmonary vein reconnection.

Leo M, Pedersen MF, Rajappan K, Ginks M, Bashir Y, Betts TR.

Europace. 2017 Jun 1;19(6):954-960. doi: 10.1093/europace/euw102.


The Role of Adenosine in Pulmonary Vein Isolation: A Critical Review.

Dallaglio PD, Betts TR, Ginks M, Bashir Y, Anguera I, Rajappan K.

Cardiol Res Pract. 2016;2016:8632509. doi: 10.1155/2016/8632509. Epub 2016 Feb 15. Review.


Catheter ablation of atrial fibrillation in patients with heart failure: impact of maintaining sinus rhythm on heart failure status and long-term rates of stroke and death.

Ullah W, Ling LH, Prabhu S, Lee G, Kistler P, Finlay MC, Earley MJ, Sporton S, Bashir Y, Betts TR, Rajappan K, Thomas G, Duncan E, Staniforth A, Mann I, Chow A, Lambiase P, Schilling RJ, Hunter RJ.

Europace. 2016 May;18(5):679-86. doi: 10.1093/europace/euv440. Epub 2016 Feb 3.


Procedural Success of Left Ventricular Lead Placement for Cardiac Resynchronization Therapy: A Meta-Analysis.

Gamble JHP, Herring N, Ginks M, Rajappan K, Bashir Y, Betts TR.

JACC Clin Electrophysiol. 2016 Feb;2(1):69-77. doi: 10.1016/j.jacep.2015.08.009. Epub 2015 Nov 10.


Implant success and safety of left atrial appendage closure with the WATCHMAN device: peri-procedural outcomes from the EWOLUTION registry.

Boersma LV, Schmidt B, Betts TR, Sievert H, Tamburino C, Teiger E, Pokushalov E, Kische S, Schmitz T, Stein KM, Bergmann MW; EWOLUTION investigators.

Eur Heart J. 2016 Aug;37(31):2465-74. doi: 10.1093/eurheartj/ehv730. Epub 2016 Jan 27.


EWOLUTION: Design of a registry to evaluate real-world clinical outcomes in patients with AF and high stroke risk-treated with the WATCHMAN left atrial appendage closure technology.

Boersma LV, Schmidt B, Betts TR, Sievert H, Tamburino C, Teiger E, Stein KM, Bergmann MW.

Catheter Cardiovasc Interv. 2016 Sep;88(3):460-5. doi: 10.1002/ccd.26358. Epub 2015 Dec 31.


Expert consensus document: Defining the major health modifiers causing atrial fibrillation: a roadmap to underpin personalized prevention and treatment.

Fabritz L, Guasch E, Antoniades C, Bardinet I, Benninger G, Betts TR, Brand E, Breithardt G, Bucklar-Suchankova G, Camm AJ, Cartlidge D, Casadei B, Chua WW, Crijns HJ, Deeks J, Hatem S, Hidden-Lucet F, Kääb S, Maniadakis N, Martin S, Mont L, Reinecke H, Sinner MF, Schotten U, Southwood T, Stoll M, Vardas P, Wakili R, West A, Ziegler A, Kirchhof P.

Nat Rev Cardiol. 2016 Apr;13(4):230-7. doi: 10.1038/nrcardio.2015.194. Epub 2015 Dec 24. Review.


Massive vegetation in device-related endocarditis.

Ormerod JO, Keiralla A, Uberoi R, Betts TR.

Eur Heart J. 2016 May 14;37(19):1550. doi: 10.1093/eurheartj/ehv662. Epub 2015 Dec 15. No abstract available.


No Benefit of Complex Fractionated Atrial Electrogram Ablation in Addition to Circumferential Pulmonary Vein Ablation and Linear Ablation: Benefit of Complex Ablation Study.

Wong KC, Paisey JR, Sopher M, Balasubramaniam R, Jones M, Qureshi N, Hayes CR, Ginks MR, Rajappan K, Bashir Y, Betts TR.

Circ Arrhythm Electrophysiol. 2015 Dec;8(6):1316-24. doi: 10.1161/CIRCEP.114.002504. Epub 2015 Aug 17.


A device to narrow the coronary sinus for angina.

Ormerod JO, Gamble JH, Betts TR.

N Engl J Med. 2015 May 14;372(20):1966. doi: 10.1056/NEJMc1503672. No abstract available.


Approaches to catheter ablation for persistent atrial fibrillation.

Verma A, Jiang CY, Betts TR, Chen J, Deisenhofer I, Mantovan R, Macle L, Morillo CA, Haverkamp W, Weerasooriya R, Albenque JP, Nardi S, Menardi E, Novak P, Sanders P; STAR AF II Investigators.

N Engl J Med. 2015 May 7;372(19):1812-22. doi: 10.1056/NEJMoa1408288.


Cardiac Resynchronization Therapy Delivered Via a Multipolar Left Ventricular Lead is Associated with Reduced Mortality and Elimination of Phrenic Nerve Stimulation: Long-Term Follow-Up from a Multicenter Registry.

Behar JM, Bostock J, Zhu Li AP, Chin HM, Jubb S, Lent E, Gamble J, Foley PW, Betts TR, Rinaldi CA, Herring N.

J Cardiovasc Electrophysiol. 2015 May;26(5):540-6. doi: 10.1111/jce.12625. Epub 2015 Mar 5.


Letter by Gamble et al regarding article, "inappropriate shocks due to subcutaneous air in a patient with a subcutaneous cardiac defibrillator".

Gamble JH, Grogono J, Rajappan K, Betts TR, Bashir Y, Khiani R.

Circ Arrhythm Electrophysiol. 2014 Dec;7(6):1281. doi: 10.1161/CIRCEP.114.002348. No abstract available.


Inter- and intravein differences in cardiac output with cardiac resynchronization pacing using a multipolar LV pacing lead.

Jones MA, Khiani R, Foley P, Webster D, Qureshi N, Wong KC, Rajappan K, Bashir Y, Betts TR.

Pacing Clin Electrophysiol. 2015 Feb;38(2):267-74. doi: 10.1111/pace.12531. Epub 2014 Nov 20.


Multisite left ventricular pacing in cardiac resynchronization therapy.

Gamble JH, Betts TR.

Future Cardiol. 2014 Jul;10(4):469-77. doi: 10.2217/fca.14.31. Review.


The benefit of tissue contact monitoring with an electrical coupling index during ablation of typical atrial flutter--a prospective randomised control trial.

Jones MA, Webster D, Wong KC, Hayes C, Qureshi N, Rajappan K, Bashir Y, Betts TR.

J Interv Card Electrophysiol. 2014 Dec;41(3):237-44. doi: 10.1007/s10840-014-9943-6. Epub 2014 Sep 19.


A pacemaker magnet check alone is sufficient for the majority of patients postpacemaker implant.

Jones MA, Wong KC, Qureshi N, Rajappan K, Bashir Y, Betts TR.

Pacing Clin Electrophysiol. 2014 Dec;37(12):1619-23. doi: 10.1111/pace.12475. Epub 2014 Sep 8.


Management and optical coherence tomography imaging of an acute coronary artery injury induced by radiofrequency catheter ablation.

Leo M, De Maria GL, Betts TR, Banning AP.

Int J Cardiol. 2014 Jun 15;174(2):e44-6. doi: 10.1016/j.ijcard.2014.04.042. Epub 2014 Apr 13. No abstract available.


The benefits of using a bismuth-containing, radiation-absorbing drape in cardiac resynchronization implant procedures.

Jones MA, Cocker M, Khiani R, Foley P, Qureshi N, Wong KC, Rajappan K, Betts TR.

Pacing Clin Electrophysiol. 2014 Jul;37(7):828-33. doi: 10.1111/pace.12349. Epub 2014 Feb 23.


Barriers to patients eligible for screening investigations and insertion of primary prevention implantable cardioverter defibrillators.

Sadarmin PP, Wong KC, Rajappan K, Bashir Y, Betts TR.

Europace. 2014 Nov;16(11):1575-9. doi: 10.1093/europace/euu054. Epub 2014 Mar 25.


Periprocedural stroke risk in patients undergoing catheter ablation for atrial fibrillation on uninterrupted warfarin.

Page SP, Herring N, Hunter RJ, Withycombe E, Lovell M, Wali G, Betts TR, Bashir Y, Dhinoja M, Earley MJ, Sporton SC, Rajappan K, Schilling RJ.

J Cardiovasc Electrophysiol. 2014 Jun;25(6):585-90. doi: 10.1111/jce.12411. Epub 2014 Apr 17.


Steerable sheath technology in the ablation of atrial fibrillation.

Joseph J, Wong KC, Ginks MR, Bashir Y, Betts TR, Rajappan K.

Recent Pat Cardiovasc Drug Discov. 2013 Dec;8(3):171-7. Review.


Risk stratification key in patients with syncope.

Leo M, Betts TR.

Practitioner. 2013 Nov-Dec;257(1766):15-9, 2.


Development of a technique for left ventricular endocardial pacing via puncture of the interventricular septum.

Betts TR, Gamble JH, Khiani R, Bashir Y, Rajappan K.

Circ Arrhythm Electrophysiol. 2014 Feb;7(1):17-22. doi: 10.1161/CIRCEP.113.001110. Epub 2014 Jan 14.


The determinants of successful RF ablation - is measurement of tissue contact the next step?

Jones MA, Wong KC, Bashir Y, Betts TR, Rajappan K.

Recent Pat Cardiovasc Drug Discov. 2013 Aug;8(2):151-61. Review.


Left ventricular endocardial pacing via the interventricular septum for cardiac resynchronization therapy: first report.

Gamble JH, Bashir Y, Rajappan K, Betts TR.

Heart Rhythm. 2013 Dec;10(12):1812-4. doi: 10.1016/j.hrthm.2013.07.033. Epub 2013 Jul 23. No abstract available.


Mitral isthmus ablation is feasible, efficacious, and safe using a remote robotic catheter system.

Wong KC, Jones M, Webb T, Qureshi N, Bashir Y, Betts TR, Rajappan K.

Pacing Clin Electrophysiol. 2013 Nov;36(11):1364-72. doi: 10.1111/pace.12201. Epub 2013 Jun 10.


The Prevalence of Low Left Atrial Appendage Emptying Velocity and Thrombus in Patients Undergoing Catheter Ablation for Atrial Fibrillation on Uninterrupted Peri-procedural Warfarin Therapy.

Herring N, Page SP, Ahmed M, Burg MR, Hunter RJ, Earley MJ, Sporton SC, Newton JD, Sabharwal NK, Myerson SG, Bashir Y, Betts TR, Schilling RJ, Rajappan K.

J Atr Fibrillation. 2013 Apr 6;5(6):761. doi: 10.4022/jafib.761. eCollection 2013 Apr-May.


Feasibility of mitral isthmus and left atrial roof linear lesions using an 8 mm tip cryoablation catheter.

Betts TR, Jones M, Wong KC, Qureshi N, Rajappan K, Bashir Y.

J Cardiovasc Electrophysiol. 2013 Jul;24(7):775-80. doi: 10.1111/jce.12129. Epub 2013 Mar 29.


Absolute risk reduction in total mortality with implantable cardioverter defibrillators: analysis of primary and secondary prevention trial data to aid risk/benefit analysis.

Betts TR, Sadarmin PP, Tomlinson DR, Rajappan K, Wong KC, de Bono JP, Bashir Y.

Europace. 2013 Jun;15(6):813-9. doi: 10.1093/europace/eus427. Epub 2013 Jan 30.


Entrainment with long postpacing intervals from within the flutter circuit: what is the mechanism?

Wong KC, Rajappan K, Bashir Y, Betts TR.

Circ Arrhythm Electrophysiol. 2012 Oct;5(5):e90-1; discussion e92. doi: 10.1161/CIRCEP.111.969030. No abstract available.


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