journal
Journals Circulation. Arrhythmia and El...

Circulation. Arrhythmia and Electrophysiology

https://read.qxmd.com/read/37728002/abnormal-atrial-potentials-recorded-during-sinus-rhythm-or-pacing-represent-substrates-for-reentrant-atrial-tachycardia
#1
JOURNAL ARTICLE
Yosuke Nakatani, F Daniel Ramirez, Masateru Takigawa, Takashi Nakashima, Clémentine André, Cyril Goujeau, Philipp Krisai, Takamitsu Takagi, Tsukasa Kamakura, Vlachos Konstantinos, Aline Carapezzi, Ghassen Cheniti, Romain Tixier, Nicolas Welte, Remi Chauvel, Josselin Duchateau, Thomas Pambrun, Nicolas Derval, Frédéric Sacher, Meleze Hocini, Michel Haïssaguerre, Pierre Jaïs
BACKGROUND: Abnormal atrial potentials (AAPs) recorded during sinus rhythm/atrial pacing may indicate areas of slow conduction capable of supporting reentrant atrial tachycardia (AT). Therefore, we sought to examine the relationship between AAPs and AT circuits. METHODS: One hundred twenty-three reentrant ATs in 104 patients were analyzed. AAPs, consisting of fragmented potentials and split potentials, were assessed using the Rhythmia LUMIPOINT algorithm. RESULTS: There was 93±13% overlap between areas with AAPs during sinus rhythm/atrial pacing and areas of slow conduction along the reentry circuit during AT...
September 20, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37727989/reversible-pulsed-electrical-fields-as-an-in-vivo-tool-to-study-cardiac-electrophysiology-the-advent-of-pulsed-field-mapping
#2
JOURNAL ARTICLE
Jacob S Koruth, Petr Neuzil, Iwanari Kawamura, Kenji Kuroki, Jan Petru, Gediminas Rackauskas, Moritoshi Funasako, Audrius Aidietis, Vivek Y Reddy
BACKGROUND: During electrophysiological mapping of tachycardias, putative target sites are often only truly confirmed to be vital after observing the effect of ablation. This lack of mapping specificity potentiates inadvertent ablation of innocent cardiac tissue not relevant to the arrhythmia. But if myocardial excitability could be transiently suppressed at critical regions, their suitability as targets could be conclusively determined before delivering tissue-destructive ablation lesions...
September 20, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37646176/hypoxia-promotes-atrial-tachyarrhythmias-via-opening-of-atp-sensitive-potassium-channels
#3
JOURNAL ARTICLE
Mark J Specterman, Qadeer Aziz, Yiwen Li, Naomi A Anderson, Leona Ojake, Keat-Eng Ng, Alison M Thomas, Malcolm C Finlay, Richard J Schilling, Pier D Lambiase, Andrew Tinker
BACKGROUND: Hypoxia-ischemia predisposes to atrial arrhythmia. Atrial ATP-sensitive potassium channel (KATP ) modulation during hypoxia has not been explored. We investigated the effects of hypoxia on atrial electrophysiology in mice with global deletion of KATP pore-forming subunits. METHODS: Whole heart KATP RNA expression was probed. Whole-cell KATP current and action potentials were recorded in isolated wild-type (WT), Kir6.1 global knockout (6.1-gKO), and Kir6...
August 30, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37646164/predicting-lesion-durability-with-pfa-one-step-closer
#4
EDITORIAL
Jacob S Koruth, Iwanari Kawamura
No abstract text is available yet for this article.
August 30, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37638409/nonthermal-point-by-point-pulmonary-vein-isolation-using-a-novel-pulsed-field-ablation-system
#5
JOURNAL ARTICLE
Jan-Per Wenzel, Marc D Lemoine, Laura Rottner, Ilaria My, Fabian Moser, Julius Obergassel, Moritz Nies, Jan Rieß, Djemail Ismaili, Julius Nikorowitsch, Feifan Ouyang, Paulus Kirchhof, Andreas Rillig, Andreas Metzner, Bruno Reissmann
No abstract text is available yet for this article.
August 28, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37622312/payer-negotiated-prices-for-cardiac-electrophysiology-procedures-at-2022-to-2023-top-100-us-news-world-report-for-cardiology-and-heart-surgery-hospitals
#6
JOURNAL ARTICLE
Kunal Gupta, Ravi Gupta, Roy Xiao, Vinay K Rathi, P Elliott Miller, Joseph S Ross, Sanket S Dhruva
No abstract text is available yet for this article.
August 25, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37589197/temporal-trends-and-lesion-sets-for-persistent-atrial-fibrillation-ablation-a-meta-analysis-with-trial-sequential-analysis-and-meta-regression
#7
JOURNAL ARTICLE
Arunashis Sau, Sharan Kapadia, Sayed Al-Aidarous, James Howard, Afzal Sohaib, Markus B Sikkel, Ahran Arnold, Jonathan W Waks, Daniel B Kramer, Nicholas S Peters, Fu Siong Ng
BACKGROUND: Ablation for persistent atrial fibrillation (PsAF) has been performed for over 20 years, although success rates have remained modest. Several adjunctive lesion sets have been studied but none have become standard of practice. We sought to describe how the efficacy of ablation for PsAF has evolved in this time period with a focus on the effect of adjunctive ablation strategies. METHODS: Databases were searched for prospective studies of PsAF ablation...
August 17, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37589122/sex-and-gene-influence-arrhythmia-susceptibility-in-murine-models-of-calmodulinopathy
#8
JOURNAL ARTICLE
Lisa M Wren, Jean-Marc DeKeyser, David Y Barefield, Nicole A Hawkins, Elizabeth M McNally, Jennifer A Kearney, J Andrew Wasserstrom, Alfred L George
BACKGROUND: Pathogenic variants in genes encoding CaM (calmodulin) are associated with a life-threatening ventricular arrhythmia syndrome (calmodulinopathy). The in vivo consequences of CaM variants have not been studied extensively and there is incomplete understanding of the genotype-phenotype relationship for recurrent variants. We investigated effects of different factors on calmodulinopathy phenotypes using 2 mouse models with a recurrent pathogenic variant (N98S) in Calm1 or Calm2 ...
August 17, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37577822/dynamics-of-high-density-unipolar-epicardial-electrograms-during-pfa
#9
JOURNAL ARTICLE
Gerard Amorós-Figueras, Sergi Casabella-Ramon, Zoraida Moreno-Weidmann, Antoni Ivorra, Jose M Guerra, Tomás García-Sánchez
BACKGROUND: Pulsed field ablation (PFA) is a novel nonthermal cardiac ablation technology based on irreversible electroporation (IRE). While areas of IRE lead to durable lesions, the surrounding regions, where reversible electroporation occurs, recover. The behavior of local electrograms in areas of different electroporation levels remains unknown. The goal of this study is to characterize electrogram dynamics after PFA in IRE and reversible electroporation areas. METHODS: A total of 6 domestic swine were used...
August 14, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37577815/electrical-resynchronization-and-clinical-outcomes-during-long-term-follow-up-in-intraventricular-conduction-delay-patients-applied-left-bundle-branch-pacing-optimized-cardiac-resynchronization-therapy
#10
JOURNAL ARTICLE
Xueying Chen, Xiao Li, Yingnan Bai, Jingfeng Wang, Shengmei Qin, Jin Bai, Wei Wang, Yixiu Liang, Haiyan Chen, Yangang Su, Junbo Ge
BACKGROUND: Left bundle branch-optimized cardiac resynchronization therapy (LOT-CRT) has shown encouraging results for QRS duration reduction and heart function improvement. However, the feasibility and efficacy of LOT-CRT have not been well established in intraventricular conduction delay patients. This study aims to assess and compare the efficacy and clinical outcome of CRT based on left bundle branch pacing, combined with coronary sinus left ventricular pacing (LOT-CRT) with CRT via biventricular pacing (BiV-CRT) in intraventricular conduction delay patients indicated for CRT...
August 14, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37565354/myocarditis-and-sudden-cardiac-death-in-the-community-clinical-and-pathological-insights-from-a-national-registry-in-the-united-kingdom
#11
JOURNAL ARTICLE
Raghav T Bhatia, Gherardo Finocchiaro, Joseph Westaby, Nikhil Chatrath, Elijah R Behr, Michael Papadakis, Sanjay Sharma, Mary N Sheppard
No abstract text is available yet for this article.
August 11, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37565338/artificial-intelligence-enabled-electrocardiogram-in-the-detection-of-patients-at-risk-of-atrial-secondary-mitral-regurgitation
#12
JOURNAL ARTICLE
Jwan A Naser, Eunjung Lee, Hector I Michelena, Grace Lin, Patricia A Pellikka, Vuyisile T Nkomo, Peter A Noseworthy, Paul A Friedman, Zachi I Attia, Sorin V Pislaru
No abstract text is available yet for this article.
August 11, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37485717/catheter-ablation-of-atrial-fibrillation-in-adult-congenital-heart-disease-procedural-characteristics-and-outcomes
#13
JOURNAL ARTICLE
Tiffany Y Hu, Chaitra Janga, Mustapha Amin, Nicholas Y Tan, David O Hodge, Ramila A Mehta, Christopher J McLeod, Anca Chiriac, William R Miranda, Heidi M Connolly, Samuel J Asirvatham, Abhishek J Deshmukh, Alexander C Egbe, Malini Madhavan
BACKGROUND: The outcomes of catheter ablation for atrial fibrillation in adults with congenital heart disease are not well described. METHODS: In a retrospective study of adult patients with congenital heart disease who underwent catheter ablation for atrial fibrillation between 2000 and 2020 at Mayo Clinic, procedural characteristics and outcomes were collected. The primary outcomes were atrial arrhythmia (AA) recurrence following a 3-month blanking period and repeat ablation...
July 24, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37485688/impact-of-median-sternotomy-on-safety-and-efficacy-of-the-subcutaneous-implantable-cardioverter-defibrillator
#14
JOURNAL ARTICLE
Alan Sugrue, Rand Ibrahim, Marvin Lu, Neal K Bhatia, Laith Alkukhun, Joseph Adewumi, Robert D Schaller, Francis E Marchlinski, Benjamin D'Souza, Babak Nazer, Wendy Tzou, Faisal M Merchant, David S Frankel
BACKGROUND: Subcutaneous implantable cardioverter defibrillators (S-ICDs) are an attractive alternative to transvenous ICDs among those not requiring pacing. However, the risks of damage to the S-ICD electrode during sternotomy and adverse interactions with sternal wires remain unclear. We sought to determine the rates of damage to the S-ICD lead during sternotomy, inappropriate shocks from electrical noise due to interaction with sternal wires, and failure to terminate spontaneous or induced ventricular arrhythmias...
July 24, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37485681/novel-intercostal-extravascular-icd-lead-compatible-with-standard-pulse-generators-another-step-forward-in-icd-evolution
#15
EDITORIAL
Edoardo Bressi, Kenneth A Ellenbogen, Jordana Kron
No abstract text is available yet for this article.
July 24, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37485680/impact-of-diastolic-dysfunction-on-the-risk-of-sudden-cardiac-arrest
#16
JOURNAL ARTICLE
Samir Saba, Suresh Mulukutla, Floyd Thoma, Konstantinos N Aronis, Aditya Bhonsale, Krishna Kancharla, Andrew Voigt, Alaa A Shalaby, N A Mark Estes, Sandeep Jain
No abstract text is available yet for this article.
July 24, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37485678/ventricular-electrograms-duration-map-to-detect-ventricular-arrhythmia-substrate-the-vedum-project-study
#17
JOURNAL ARTICLE
Pietro Rossi, Filippo Maria Cauti, Marta Niscola, Michele Magnocavallo, Marco Polselli, Silvia Capone, Domenico Giovanni Della Rocca, Jorge Rodriguez-Garrido, Gianfranco Piccirillo, Ignasi Anguera, Paolo Dallaglio, Stefano Bianchi
BACKGROUND: The analysis of the wave-front activation patterns is crucial for the comprehension and treatment of ventricular tachycardia (VT). The ventricular electrograms duration map (VEDUM) is a potential method to identify areas (VEDUM area) with slow and inhomogeneous activation. There is no available data on the characteristics and the arrhythmogenic role of VEDUM areas identified during sinus/paced rhythm. METHODS: Patients referred for VT ablation were enrolled at 3 different centers...
July 24, 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37582165/correction-to-new-onset-atrial-fibrillation-in-left-bundle-branch-area-pacing-compared-with-right-ventricular-pacing
#18
JOURNAL ARTICLE
(no author information available yet)
No abstract text is available yet for this article.
August 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37582164/correction-to-orthostatic-hypotension-management-of-a-complex-but-common-medical-problem
#19
JOURNAL ARTICLE
(no author information available yet)
No abstract text is available yet for this article.
August 2023: Circulation. Arrhythmia and Electrophysiology
https://read.qxmd.com/read/37582163/initial-experience-with-intercostal-insertion-of-an-extravascular-icd-lead-compatible-with-existing-pulse-generators
#20
JOURNAL ARTICLE
Martin C Burke, Reinoud E Knops, Vivek Reddy, Johan Aasbo, Michael Husby, Alan Marcovecchio, Mark O'Connor, Rick Sanghera, Don Scheck, Shari Pepplinkhuizen, Adrian Ebner
BACKGROUND: This study assessed safety and feasibility of a novel extravascular implantable cardioverter defibrillator (ICD) lead when inserted anteriorly through a rib space and connected to various commercially available ICD pulse generators (PGs) placed in either a left mid-axillary or left pectoral pocket. Currently available or investigational, extravascular-ICDs include a subcutaneous or subxiphoid lead connected to customized extravascular-ICD PGs. METHODS: This novel extravascular-ICD (AtaCor Medical Inc, San Clemente, CA) employs a unique intercostal implant technique and is designed to function with commercial DF-4 ICD PGs...
August 2023: Circulation. Arrhythmia and Electrophysiology
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