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Heart Rhythm: the Official Journal of the Heart Rhythm Society

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https://www.readbyqxmd.com/read/28629853/from-trailer-parks-to-the-human-atria-the-meandering-path-of-rotors
#1
EDITORIAL
Mohammed Saeed, Hakan Oral
No abstract text is available yet for this article.
June 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28629852/bioelectronic-block-of-paravertebral-sympathetic-nerves-mitigates-post-myocardial-infarction-ventricular-arrhythmias
#2
Ray W Chui, Una Buckley, Pradeep S Rajendran, Tina Vrabec, Kalyanam Shivkumar, Jeffrey L Ardell
BACKGROUND: Autonomic dysfunction contributes to induction of ventricular tachyarrhythmia (VT). OBJECTIVE: To determine the efficacy of charge-balanced direct current (CBDC), applied to the T1-T2 segment of the paravertebral sympathetic chain, on VT inducibility post-myocardial infarction (MI). METHODS: In a porcine model, CBDC was applied in acute animals (n=7) to optimize stimulation parameters for sympathetic blockade and in chronic MI animals (n=7) to evaluate the potential for VTs...
June 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28629851/another-piece-of-the-puzzle-assessment-of-mechanical-dispersion-by-magnetic-resonance-in-long-qt-syndrome
#3
EDITORIAL
Elena Arbelo
No abstract text is available yet for this article.
June 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28629850/function-follows-form-when-electrophysiology-derives-from-anatomy
#4
EDITORIAL
Mehdi Namdar, Dipen C Shah
No abstract text is available yet for this article.
June 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28625929/verification-of-a-novel-atrial-fibrillation-cryoablation-dosing-algorithm-guided-by-time-to-pulmonary-vein-isolation-results-from-the-cryo-dosing-study-cryoballoon-ablation-dosing-based-on-the-assessment-of-time-to-effect-and-pulmonary-vein-isolation-guidance
#5
Arash Aryana, David N Kenigsberg, Marcin Kowalski, Charles H Koo, Hae W Lim, Padraig Gearoid O'Neill, Mark R Bowers, Robert B Hokanson, Kenneth A Ellenbogen
BACKGROUND: There are no recommendations on the optimal dosing for cryoablation of atrial fibrillation (Cryo-AF). OBJECTIVE: We developed and prospectively tested a Cryo-AF dosing protocol guided exclusively by time-to-pulmonary vein (PV) isolation (TT-PVI) in patients undergoing a first-time Cryo-AF. METHODS: In this multicenter study, we examined the acute/long-term safety/efficacy of Cryo-AF using the proposed dosing algorithm (Cryo-AFDosing, n=355) against a conventional, non-standardized approach (Cryo-AFConventional, n=400) in a non-randomized fashion...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28625928/second-generation-cryoballoon-ablation-in-the-setting-of-left-common-pulmonary-veins-procedural-findings-and-clinical-outcome
#6
Erwin Ströker, Ken Takarada, Carlo de Asmundis, Juan-Pablo Abugattas, Giacomo Mugnai, Vedran Velagic, Valentina de Regibus, Hugo-Enrique Coutiño, Rajin Choudhury, Saverio Iacopino, Yves De Greef, Kaoru Tanaka, Pedro Brugada, Gian-Battista Chierchia
BACKGROUND: A left common pulmonary vein (LCPV) accounts as the most frequent PV variation. The use of the cryoballoon (CB) for isolating these veins, is still debatable. To date, no data are available regarding the feasibility, acute PV isolation, and clinical outcome of the second-generation CB (CB-A) in this setting. OBJECTIVE: To investigate the performance of the CB-A in patients with LCPVs. METHODS: In a total cohort of 433 patients having undergone CB-A ablation for drug-refractory atrial fibrillation (AF) together with pre-procedural CT-scanning, 146 patients presented a LCPV...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28625927/entrainment-and-high-density-three-dimensional-mapping-in-right-atrial-macro-reentry-provide-critical-complementary-information-entrainment-may-unmask-visual-reentry-as-passive
#7
Bhupesh Pathik, Geoffrey Lee, Chrishan Nalliah, Stephen Joseph, Joseph B Morton, Paul B Sparks, Prashanthan Sanders, Peter M Kistler, Jonathan M Kalman
BACKGROUND: With the recent advent of high-density(HD) 3D mapping, the utility of entrainment is uncertain. On the other hand, the limitations of visual representation and interpretation of these high-resolution 3D maps are unclear. OBJECTIVES: Using both HD 3D mapping and entrainment mapping in right atrial(RA) macro-reentry, we sought to determine their strengths and limitations. METHODS: 15 patients were studied. The number and type of circuits accounting for ≥90% of the tachycardia cycle length(TCL) using HD 3D mapping were verified using systematic entrainment mapping...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28624663/role-of-exercise-electrocardiogram-to-screen-for-t-wave-oversensing-after-implantation-of-subcutaneous-implantable-cardioverter-defibrillator
#8
Muhammad R Afzal, Christopher Evenson, Auroa Badin, Dilesh Patel, Hemant Godara, Michael Essandoh, Toshimasa Okabe, Jaret Tyler, Mahmoud Houmsse, Ralph Augostini, John Hummel, Steven Kalbfleisch, Emile G Daoud, Raul Weiss
BACKGROUND: During early experience with subcutaneous implantable cardioverter defibrillator (S-ICD(TM)), several patients had inappropriate shocks from TWOS during exercise. This prompted some operators to perform routine treadmill exercise test after implantation of S-ICD to screen for TWOS. Meanwhile, improvements have been made in the detection algorithms by the manufacturer. OBJECTIVE: To assess whether routine treadmill exercise post S-ICD(TM) implantation is warranted...
June 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28627451/a-leadless-pacemaker-surrounded-by-three-valvular-prosthesis
#9
Serge Boveda, Philippe Durand, Stéphane Combes, Claude-Jean Mariottini
No abstract text is available yet for this article.
June 13, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28619695/a-prolonged-pr-interval-an-unfavorable-shareholder-of-the-profits-of-cardiac-resynchronization-therapy
#10
EDITORIAL
Norbert M van Hemel
No abstract text is available yet for this article.
June 12, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28610990/atrial-ventricular-differences-in-rabbit-cardiac-voltage-gated-na-currents-basis-for-atrial-selective-block-by-ranolazine
#11
Rachel E Caves, Hongwei Cheng, Stéphanie C Choisy, Hanne C Gadeberg, Simon M Bryant, Jules C Hancox, Andrew F James
BACKGROUND: Class 1 antiarrhythmic drugs are highly effective in restoring and maintaining sinus rhythm in atrial fibrillation patients but carry a risk of ventricular tachyarrhythmia. The anti-anginal agent, ranolazine, is a prototypic atrial-selective voltage-gated Na(+) channel blocker but the mechanisms underlying its atrial-selective action remain unclear. OBJECTIVE: The present study examined the mechanisms underlying the atrial-selective action of ranolazine...
June 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28610989/making-lead-extraction-safer
#12
EDITORIAL
George H Crossley
No abstract text is available yet for this article.
June 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28610988/genome-wide-association-study-of-heart-rate-and-its-variability-in-hispanic-latino-cohorts
#13
Kathleen F Kerr, Christy L Avery, Henry J Lin, Laura M Raffield, Qian S Zhang, Brian L Browning, Sharon R Browning, Matthew P Conomos, Stephanie M Gogarten, Cathy C Laurie, Tamar Sofer, Timothy A Thornton, Chancellor Hohensee, Rebecca D Jackson, Charles Kooperberg, Yun Li, Raúl Méndez-Giráldez, Marco V Perez, Ulrike Peters, Alexander P Reiner, Zhu-Ming Zhang, Jie Yao, Nona Sotoodehnia, Kent D Taylor, Xiuqing Guo, Leslie A Lange, Elsayed Z Soliman, James G Wilson, Jerome I Rotter, Susan R Heckbert, Deepti Jain, Eric A Whitsel
BACKGROUND: Although time-domain measures of heart rate variability (HRV) are used to estimate cardiac autonomic tone and disease risk in multi-ethnic populations, the genetic epidemiology of HRV in Hispanics/Latinos has not been characterized. OBJECTIVE: Conduct a genome-wide association study (GWAS) of heart rate (HR) and its variability in the Hispanic Community Health Study / Study of Latinos, Multi-Ethnic Study of Atherosclerosis, and Women's Health Initiative Hispanic SNP-Health Association Resource project (n=13,767)...
June 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28610987/-tracking-interlead-heterogeneity-of-r-and-t-wave-morphology-to-disclose-latent-risk-for-sudden-cardiac-death
#14
Richard L Verrier, Heikki Huikuri
Sudden cardiac death (SCD) due primarily to ventricular fibrillation claims 1.5 million lives worldwide each year. In 45-50% of cases, it is the first manifestation of underlying heart disease. Traditional risk factors including smoking, hypertension, age, sex, as well as depressed left ventricular ejection fraction lack sufficient sensitivity and specificity to forewarn impending life-threatening arrhythmias. There has been a decades-long search for electrocardiographic (ECG) markers of SCD risk. Several interval-based indices such as QT dispersion and Tpeak-Tend interval held initial promise but ultimately yielded mixed results...
June 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28606636/-statins-protect-against-arrhythmogenic-calcium-alternans-in-the-post-mi-diabetic-heart-pleiotropy-on-steroids
#15
EDITORIAL
Richard L Verrier
No abstract text is available yet for this article.
June 9, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28606635/atrial-and-ventricular-activation-sequence-after-ventricular-induction-entrainment-pacing-during-fast-slow-atrioventricular-nodal-reentrant-tachycardia-new-insight-into-the-use-of-v-a-a-v-for-the-differential-diagnosis-of-supraventricular-tachycardia
#16
Yoshiaki Kaneko, Tadashi Nakajima, Tadanobu Irie, Takashi Iizuka, Shuntaro Tamura, Masahiko Kurabayashi
BACKGROUND: The atrial and ventricular response observed immediately after cessation of ventricular induction/entrainment pacing is commonly analyzed to discriminate atrial tachycardia (AT) from other supraventricular tachycardias (SVTs) during electrophysiology studies. However, the response in fast-slow atrioventricular nodal reentrant tachycardia (F/S-AVNRT) remains poorly investigated. OBJECTIVE: To analyze the atrial and ventricular activation patterns after VP in F/S-AVNRT...
June 9, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28606634/the-subcutaneous-defibrillator-modest-step-or-quantum-leap
#17
EDITORIAL
Miguel A Leal, Richard L Page
No abstract text is available yet for this article.
June 9, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28606633/leadless-pacing-meets-the-real-world-the-maturation-of-clinical-evidence-behind-a-miniaturized-pacemaker
#18
EDITORIAL
Mark W Preminger, Suneet Mittal
No abstract text is available yet for this article.
June 9, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28603002/association-of-pre-procedural-cardiac-magnetic-resonance-imaging-with-outcomes-of-ventricular-tachycardia-ablation-in-patients-with-idiopathic-dilated-cardiomyopathy
#19
Konstantinos C Siontis, Hyungjin Myra Kim, Ghaith Sharaf Dabbagh, Rakesh Latchamsetty, Jadranka Stojanovska, Krit Jongnarangsin, Fred Morady, Frank M Bogun
BACKGROUND: Knowledge of complex arrhythmogenic substrates can help plan ventricular tachycardia (VT) ablation in idiopathic dilated cardiomyopathy (DCM). OBJECTIVE: We sought to assess whether pre-procedural late-gadolinium enhancement magnetic resonance imaging (LGE-MRI) can improve ablation outcomes in DCM. METHODS: Consecutive patients (n=96) with idiopathic DCM underwent VT ablation with open-irrigated catheters (2006-2016). Before 2012, LGE-MRI was not performed at our institution in patients with implanted devices, but it has been performed routinely in all patients after the implementation of a new MRI protocol in 2012...
June 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28603001/low-lateral-thoracic-site-for-cardiac-implantable-electronic-device-implantation-a-viable-alternative-in-patients-with-limited-access-options-after-infected-device-extraction
#20
Jackson J Liang, Robert D Schaller, Danesh S Modi, Andres Enriquez, Gregory E Supple, Joshua M Cooper
BACKGROUND: Device reimplantation after extraction due to cardiac implantable electronic device (CIED) infection in pacemaker-dependent patients can be challenging in patients with limited access options. OBJECTIVE: We describe a straight-forward, low lateral thoracic implantation technique for patients with a patent axillary vein but unavailable bilateral pectoral sites. METHODS: We included 9 pacemaker-dependent patients (mean age 70±13, 7 male) who underwent CIED extraction and low lateral thoracic reimplant, in whom bilateral pectoral sites were unavailable...
June 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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