Full Text Journal Articles by
Author Gregory K Feld

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Sex Differences in Ablation Strategy, Lesion Sets, and Complications of Catheter Ablation for Atrial Fibrillation: An Analysis From the GWTG-AFIB Registry.

Fahd N Yunus, Alexander C Perino, DaJuanicia N Holmes, Roland A Matsouaka, Anne B Curtis, Kenneth A Ellenbogen, David S Frankel, Bradley P Knight, Andrea M Russo, William R Lewis, Jonathan P Piccini, Mintu P Turakhia, ,

<h4>Background</h4>When presenting for atrial fibrillation (AF) ablation, women, compared with men, tend to have more nonpulmonary vein triggers and advanced atrial disease. Whether this informs differences in AF ablation strategy is not well described. We aimed to characterize ablation strategy and complications by sex, using the Get With The Guidelines-AF ... Read more >>

Circ Arrhythm Electrophysiol (Circulation. Arrhythmia and electrophysiology)
[2021, 14(11):e009790]

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Association between specific antiarrhythmic drug prescription in the post-procedural blanking period and recurrent atrial arrhythmias after catheter ablation for atrial fibrillation.

Chaitanya L Malladi, Douglas Darden, Omar Aldaas, Praneet S Mylavarapu, Michael Eskander, Florentino Lupercio, Frederick T Han, Kurt S Hoffmayer, Farshad Raissi, Gordon Ho, David Krummen, Gregory K Feld, Jonathan C Hsu,

<h4>Purpose</h4>To evaluate if specific AADs prescribed in the blanking period (BP) after catheter ablation of atrial fibrillation (AF) may be associated with reduced risk of early recurrence (ER) and/or late recurrence (LR) of atrial arrhythmias.<h4>Methods</h4>A total of 478 patients undergoing first-time ablation at a single institution were included. Outcomes were: ... Read more >>

PLoS One (PloS one)
[2021, 16(6):e0253266]

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Diagnosis and ablation of atrial flutter: The prototypical reentrant atrial arrhythmia.

Gregory K Feld,

Heart Rhythm (Heart rhythm)
[2021, 18(7):1239-1240]

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Association between early recurrences of atrial tachyarrhythmias and long-term outcomes in patients after repeat atrial fibrillation ablation.

Douglas Darden, Omar Aldaas, Chaitanya L Malladi, Praneet S Mylavarapu, Muhammad Bilal Munir, Frederick T Han, Kurt S Hoffmayer, Farshad Raissi, Gordon Ho, David Krummen, Gregory K Feld, Jonathan C Hsu,

<h4>Purpose</h4>Early recurrence of atrial tachyarrhythmia (ER) is predictive of late recurrence of atrial tachyarrhythmia (LR) after first-time atrial fibrillation (AF) ablation, but the association in patients undergoing repeat AF ablation is unknown. We aim to determine the incidence and prognostic significance of ER after repeat ablation.<h4>Methods</h4>A total of 259 consecutive ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2021, :]

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Fasciculoventricular and atrioventricular accessory pathways in patients with Danon disease and preexcitation: A multicenter experience.

Douglas Darden, Jonathan C Hsu, Wendy S Tzou, Johannes C von Alvensleben, Mary Brooks, Kurt S Hoffmayer, Michela Brambatti, William H Sauer, Gregory K Feld, Eric Adler,

<h4>Background</h4>Studies have suggested that a fasciculoventricular pathway (FVP) may be the cause of preexcitation in patients with Danon disease, a rare X-linked dominant genetic disorder of hypertrophic cardiomyopathy.<h4>Objective</h4>The purpose of this study was to describe the prevalence of ventricular preexcitation on resting 12-lead electrocardiogram (ECG) in patients with Danon disease ... Read more >>

Heart Rhythm (Heart rhythm)
[2021, 18(7):1194-1202]

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Ablation of mitral annular flutter ablation utilizing a left atrial anterior line versus a lateral mitral isthmus line: a systematic review and meta-analysis.

Omar M Aldaas, Florentino Lupercio, Andrew Y Lin, Frederick T Han, Kurt S Hoffmayer, Farshad Raissi, Gordon Ho, David Krummen, Gregory K Feld, Jonathan C Hsu,

<h4>Purpose</h4>Mitral annular flutter (MAF) is a common arrhythmia after atrial fibrillation ablation. We sought to compare the efficacy and safety of catheter ablation utilizing either a left atrial anterior wall (LAAW) line or a lateral mitral isthmus (LMI) line.<h4>Methods</h4>We performed a systematic review for all studies that compared LAAW versus ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2022, 63(1):87-95]

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A simple improvement on existing technology to enhance transseptal puncture and left atrial access using large diameter sheaths for mapping, ablation, and LAA occlusion procedures.

Gregory K Feld, Jonathan C Hsu,

J Cardiovasc Electrophysiol (Journal of cardiovascular electrophysiology)
[2021, 32(3):735-736]

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Alternating wide complex tachycardia after surgical aortic valve replacement.

Douglas Darden, Michael Eskander, Gregory K Feld,

A 51-year-old male developed recurrent episodes of palpitations and pre-syncope after surgical aortic valve replacement. Electrocardiograms after surgery revealed a wide complex tachycardia with alternating left bundle branch and right bundle branch block morphologies. An electrophysiology study (EPS) demonstrated typical bundle branch reentry ventricular tachycardia (BBRVT) treated successfully with right ... Read more >>

Indian Pacing Electrophysiol J (Indian pacing and electrophysiology journal)
[2021, 21(3):191-195]

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Intraluminal Esophageal Temperature Monitoring Using the Circa S-Cath™ Temperature Probe to Guide Left Atrial Ablation in Patients with Atrial Fibrillation.

Sapan Bhuta, Jonathan Hsu, Kurt S Hoffmayer, Michael Mello, Thomas Savides, Malek Bashti, Jessica Hunter, Kathryn Lewis, Gregory K Feld,

<h4>Introduction</h4>Radiofrequency catheter ablation is a common treatment for atrial fibrillation (AF), during which thermal esophageal injury may rarely occur and lead to an atrio-esophageal fistula. Therefore, we studied the utility of the Circa S-Cath™ multi-sensor luminal esophageal temperature (LET) probe to prevent esophageal thermal injury.<h4>Methods and results</h4>Thirty-six patients, enrolled prospectively, ... Read more >>

J Atr Fibrillation (Journal of atrial fibrillation)
[2020, 13(4):2386]

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Meta-analysis of the Usefulness of Catheter Ablation of Atrial Fibrillation in Patients With Heart Failure With Preserved Ejection Fraction.

Omar M Aldaas, Florentino Lupercio, Douglas Darden, Praneet S Mylavarapu, Chaitanya L Malladi, Frederick T Han, Kurt S Hoffmayer, David Krummen, Gordon Ho, Farshad Raissi, Ulrika Birgersdotter-Green, Gregory K Feld, Jonathan C Hsu,

Catheter ablation improves clinical outcomes in atrial fibrillation (AF) patients with heart failure (HF) with reduced ejection fraction (HFrEF). However, the role of catheter ablation in HF with a preserved ejection fraction (HFpEF) is less clear. We performed a literature search and systematic review of studies that compared AF recurrence ... Read more >>

Am J Cardiol (The American journal of cardiology)
[2021, 142:66-73]

Cited: 1 time

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Comparison of Outcomes After Ablation of Atrial Fibrillation in Patients With Heart Failure With Preserved Versus Reduced Ejection Fraction.

Omar M Aldaas, Chaitanya L Malladi, Praneet S Mylavarapu, Florentino Lupercio, Douglas Darden, Frederick T Han, Kurt S Hoffmayer, David Krummen, Gordon Ho, Farshad Raissi, Gregory K Feld, Jonathan C Hsu,

Catheter ablation improves outcomes in atrial fibrillation (AF) patients with heart failure (HF) with reduced ejection fraction (HFrEF). We sought to evaluate the efficacy and safety of catheter ablation of AF in HF patients with a preserved ejection fraction (HFpEF). We performed a retrospective study of all patients who underwent ... Read more >>

Am J Cardiol (The American journal of cardiology)
[2020, 136:62-70]

Cited: 1 time

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Procedural Patterns and Safety of Atrial Fibrillation Ablation: Findings From Get With The Guidelines-Atrial Fibrillation.

Zak Loring, DaJuanicia N Holmes, Roland A Matsouaka, Anne B Curtis, John D Day, Nihar Desai, Kenneth A Ellenbogen, Gregory K Feld, Gregg C Fonarow, David S Frankel, Jodie L Hurwitz, Bradley P Knight, Jose A Joglar, Andrea M Russo, Mandeep S Sidhu, Mintu P Turakhia, William R Lewis, Jonathan P Piccini,

<h4>Background</h4>Catheter ablation is an increasingly used treatment for symptomatic atrial fibrillation (AF). However, there are limited prospective, nationwide data on patient selection and procedural characteristics. This study describes patient characteristics, techniques, treatment patterns, and safety outcomes of patients undergoing AF ablation.<h4>Methods</h4>A total of 3139 patients undergoing AF ablation between 2016 ... Read more >>

Circ Arrhythm Electrophysiol (Circulation. Arrhythmia and electrophysiology)
[2020, 13(9):e007944]

Cited: 2 times

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Effect of closed loop stimulation versus accelerometer on outcomes with cardiac resynchronization therapy: the CLASS trial.

Jonathan C Hsu, Douglas Darden, Maylene Alegre, Ulrika Birgersdotter-Green, Gregory K Feld, Kurt S Hoffmayer, Frederick Han, David Krummen, Farshad Raissi, Gordon Ho, Pam R Taub, Marcus A Urey, Eric Adler,

<h4>Purpose</h4>Chronotropic incompetence (CI) in patients with heart failure is common and associated with impaired exercise intolerance and adverse outcomes. This study sought to determine the effects of closed loop stimulation (CLS) rate-adaptive pacing on functional capacity in patients with heart failure with reduced ejection fraction (HFrEF) and CI implanted with ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2021, 61(3):479-485]

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Ventricular Tachycardia Storm Originating From Moderator Band Requiring Extracorporeal Membrane Oxygenation.

Douglas Darden, Jonathan C Hsu, Sanjay Shah, Kurt Hoffmayer, Gregory K Feld, Frederick T Han,

A 67-year-old man presented with dizziness secondary to ventricular tachycardia (VT) originating from the moderator band. The VT was refractory to multiple antiarrhythmic medications requiring extracorporeal membrane oxygenation and eventual curative ablation. We highlight a malignant form of idiopathic VT, unique electrocardiogram characteristics, and ablation considerations. (<b>Level of Difficulty: Intermediate.</b>). ... Read more >>

JACC Case Rep (JACC. Case reports)
[2020, 2(6):946-950]

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Ensuring bidirectional cavotricuspid isthmus conduction block during ablation for typical atrial flutter-A new twist on an old problem.

Gregory K Feld,

J Cardiovasc Electrophysiol (Journal of cardiovascular electrophysiology)
[2020, 31(7):1658-1660]

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Clinical factors associated with baseline history of atrial fibrillation and subsequent clinical outcomes following initial implantable cardioverter-defibrillator placement.

Shaun Giancaterino, Marin Nishimura, Ulrika Birgersdotter-Green, Kurt S Hoffmayer, Frederick T Han, Farshad Raissi, Gordon Ho, David Krummen, Gregory K Feld, Jonathan C Hsu,

<h4>Background</h4>Atrial fibrillation (AF) is frequently present in patients with heart failure (HF) and an implantable cardioverter-defibrillator (ICD). This study aims to identify clinical factors associated with a baseline history of AF in ICD recipients, and compares subsequent clinical outcomes in those with and without a baseline history of AF.<h4>Methods</h4>We studied ... Read more >>

Pacing Clin Electrophysiol (Pacing and clinical electrophysiology : PACE)
[2020, 43(6):542-550]

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Ventricular arrhythmias in patients with biventricular assist devices.

Andrew Y Lin, Hao Tran, Michela Brambatti, Eric Adler, Victor Pretorius, Travis Pollema, Jonathan C Hsu, Gregory K Feld, Kurt Hoffmayer, Frederick Han, David Krummen, Gordon Ho,

<h4>Purpose</h4>Ventricular arrhythmias (VAs) are common in patients after left ventricular assist device (LVAD) implant and are associated with worse outcomes. However, the prevalence and impact of VA in patients with durable biventricular assist device (BIVAD) is unknown. We performed a retrospective cohort study of patients with BIVADs to evaluate the ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2020, 58(3):243-252]

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Role of adjunctive posterior wall isolation in patients undergoing atrial fibrillation ablation: a systematic review and meta-analysis.

Florentino Lupercio, Andrew Y Lin, Omar M Aldaas, Jorge Romero, David Briceno, Kurt S Hoffmayer, Frederick T Han, Luigi Di Biase, Gregory K Feld, Jonathan C Hsu,

<h4>Background</h4>The posterior wall of the left atrium may promote atrial fibrillation (AF) due to its propensity for fibrosis, in addition to a high prevalence of non-pulmonary vein triggers. Multiple smaller studies have assessed the incremental value of posterior wall isolation (PWI) in addition to standard atrial fibrillation. Similarly, this method ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2020, 58(1):77-86]

Cited: 1 time

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Meta-analysis of Effect of Modest (≥10%) Weight Loss in Management of Overweight and Obese Patients With Atrial Fibrillation.

Omar M Aldaas, Florentino Lupercio, Frederick T Han, Kurt S Hoffmayer, David Krummen, Gordon Ho, Farshad Raissi, Ulrika Birgersdotter-Green, Gregory K Feld, Jonathan C Hsu,

Obesity and atrial fibrillation (AF) are growing epidemics with significant overlap in co-morbidities. Multiple smaller studies have evaluated the effects of weight loss and risk factor modification on recurrence of AF, reduction in AF burden and improvement in AF symptom severity. The objective of this study was to determine if ... Read more >>

Am J Cardiol (The American journal of cardiology)
[2019, 124(10):1568-1574]

Cited: 4 times

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Cardiac Resynchronization Defibrillator Therapy for Nonspecific Intraventricular Conduction Delay Versus Right Bundle Branch Block.

Hiro Kawata, Haikun Bao, Jeptha P Curtis, Karl E Minges, Teferi Mitiku, Ulrika Birgersdotter-Green, Gregory K Feld, Jonathan C Hsu,

<h4>Background</h4>The benefits of cardiac resynchronization therapy (CRT) in patients with non-left bundle branch block (LBBB) conduction abnormality have not been fully explored.<h4>Objectives</h4>This study sought to evaluate clinical outcomes among Medicare-aged patients with nonspecific intraventricular conduction delay (NICD) versus right bundle branch block (RBBB) in patients eligible for implantation with a ... Read more >>

J Am Coll Cardiol (Journal of the American College of Cardiology)
[2019, 73(24):3082-3099]

Cited: 1 time

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Adaptive cardiac resynchronization therapy is associated with decreased risk of incident atrial fibrillation compared to standard biventricular pacing: A real-world analysis of 37,450 patients followed by remote monitoring.

Jonathan C Hsu, David Birnie, Robert W Stadler, Jeffrey Cerkvenik, Gregory K Feld, Ulrika Birgersdotter-Green,

<h4>Background</h4>The AdaptivCRT algorithm (aCRT) automatically adjusts atrioventricular delays each minute to achieve ventricular fusion through left ventricular (LV) or biventricular (BiV) pacing. aCRT is associated with superior clinical outcomes compared to standard BiV pacing, but the association of aCRT and subsequent atrial fibrillation (AF) in a real-world population has not ... Read more >>

Heart Rhythm (Heart rhythm)
[2019, 16(7):983-989]

Cited: 7 times

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Predictors of rate-adaptive pacing in patients implanted with implantable cardioverter-defibrillator and subsequent differential clinical outcomes.

Nils Källner, Marin Nishimura, Ulrika Birgersdotter-Green, Kurt S Hoffmayer, Frederick T Han, David E Krummen, Farshad Raissi, Gregory K Feld, Jonathan C Hsu,

<h4>Purpose</h4>Patients with severe cardiomyopathy often have chronotropic incompetence, which is predominantly managed by activating rate-adaptive pacing in patients implanted with an implantable cardioverter-defibrillator (ICD) capable of atrial pacing. The purpose of this study was to determine predictors of rate-adaptive pacing activation, the cumulative incidence of activation, and the association of ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2019, 55(1):83-91]

Cited: 0 times

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Lead extraction for reduction of chronic pain related to cardiovascular implantable electronic device.

Kathryn Lewis, Mingyan Dai, Kristen K Patton, Yong-Mei Cha, Travis Pollema, Gregory K Feld, Ulrika Birgersdotter-Green, Victor Pretorius,

AIMS:Chronic pain at the cardiovascular implantable electronic device (CIED) generator or lead insertion site that is not otherwise manageable carries a IIA indication for extraction. However, limited data exist evaluating causes of pain and outcomes of extraction in eliminating pain. A multi-centre retrospective observational study was conducted to evaluate outcomes ... Read more >>

Europace (Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology)
[2019, 21(5):781-786]

Cited: 2 times

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Long-term mode and timing of premature ventricular complex recurrence following successful catheter ablation.

Derek Lee, Kurt S Hoffmayer, Jonathan C Hsu, Amir Schricker, Ulrika Birgersdotter-Green, Farshad Raissi, Gregory K Feld, David E Krummen,

<h4>Purpose</h4>Catheter ablation of premature ventricular contractions (PVCs) is highly successful and has become the hallmark treatment for symptomatic or highly prevalent cases. However, few studies exist that evaluate the outcomes of ablation and likely mechanisms of PVC recurrence beyond 1 year of follow-up.<h4>Methods</h4>This study is a retrospective analysis of patients who ... Read more >>

J Interv Card Electrophysiol (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing)
[2019, 55(2):153-160]

Cited: 2 times

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Management of Arrhythmias and Cardiac Implantable Electronic Devices in Patients With Left Ventricular Assist Devices.

Gordon Ho, Oscar Ö Braun, Eric D Adler, Gregory K Feld, Victor G Pretorius, Ulrika Birgersdotter-Green,

For patients with end-stage heart failure, the use of mechanical circulatory support has increased in the last decade due to improved outcomes with durable left ventricular assist devices. The management of these complex patients requires coordinated care by a multidisciplinary team including cardiac electrophysiologists because atrial and ventricular arrhythmias are ... Read more >>

JACC Clin Electrophysiol (JACC. Clinical electrophysiology)
[2018, 4(7):847-859]

Cited: 3 times

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