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Journal Cover Journal of Arrhythmia
  [SJR: 0.205]   [H-I: 4]   [0 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Print) 1880-4276 - ISSN (Online) 1883-2148
   Published by Elsevier Homepage  [3030 journals]
  • Initial experience with the subcutaneous implantable
           cardioverter-defibrillator in a single Japanese center

    • Authors: Nobuhiro Nishii; Motomi Tachibana, Yoshimasa Morimoto, Satoshi Kawada, Akihito Miyoshi, Hiroyasu Sugiyama, Koji Nakagawa, Atsuyuki Watanabe, Kazufumi Nakamura, Hiroshi Morita, Hiroshi Ito
      Abstract: The subcutaneous implantable cardioverter-defibrillator (S-ICD) is recognized as a viable alternative to the transvenous ICD. The safety and efficacy of this device has been demonstrated in Western countries, but studies with S-ICD implantation in Japanese patients have not been reported.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-03-31
      DOI: 10.1016/j.joa.2017.02.004
  • Driving restrictions in patients with implantable cardioverter
           defibrillators and pacemakers

    • Authors: Eiichi Watanabe; Haruhiko Abe, Shigeyuki Watanabe
      Abstract: Implantable cardioverter-defibrillators (ICDs) improve the survival in patients at risk of sudden cardiac death. However, these patients have an ongoing risk of sudden incapacitation that may cause harm to individuals and others when driving. Considerable disagreement exists about whether and when these patients should be allowed to resume driving after ICD therapies. This information is critical for the management decisions to avoid future potentially lethal incidents and unnecessary restrictions for ICD patients.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-03-28
      DOI: 10.1016/j.joa.2017.02.003
  • Adenosine-guided radiofrequency catheter ablation of atrial fibrillation:
           A meta-analysis of randomized control trials

    • Authors: Konstantinos P. Letsas; Stamatis Georgopoulos, Michael Efremidis, Tong Liu, George Bazoukis, Konstantinos Vlachos, Nikolaos Karamichalakis, Louiza Lioni, Antonios Sideris, Joachim R. Ehrlich
      Abstract: The prognostic significance of adenosine-mediated dormant pulmonary vein conduction, and whether such dormant conduction should be eliminated, remains controversial. We sought to perform a meta-analysis of data from eligible studies to delineate the prognostic impact of adenosine-guided radiofrequency catheter ablation of atrial fibrillation.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-03-28
      DOI: 10.1016/j.joa.2017.02.002
  • Study design of GENERAL (general practitioners and embolism prevention in
           NVAF patients treated with rivaroxaban: Real-life evidence): A multicenter
           prospective cohort study in primary care physicians to investigate the
           effectiveness and safety of rivaroxaban in Japanese patients with NVAF

    • Authors: Kengo Kusano; Masaharu Akao, Hikari Tsuji, Kunihiko Matsui, Shinya Hiramitsu, Yutaka Hatori, Hironori Odakura
      Abstract: Rivaroxaban, a direct oral anticoagulant (DOAC), has become available for stroke prevention in patients with non-valular atrial fibrillation (NVAF). However, little is known about its effectiveness and safety when prescribed by general practitioners in real-life settings.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-03-08
      DOI: 10.1016/j.joa.2016.12.001
  • The tachycardia that outsmarted the SMART

    • Authors: David Foo; Pow-Li Chia, Andreas Kucher
      Abstract: A 57-year-old man presented with palpitations and shock delivery from his implantable cardioverter-defibrillator (ICD). He had a history of ischemic cardiomyopathy with an ejection fraction of 20%. One month prior to this presentation, he received a DX ICD (Iforia 5 VR-T DX, Biotronik SE & Co. KG) for primary prevention of sudden cardiac death. Two ventricular tachycardia (VT) zones (VT1 162–188 bpm; VT2 188–222 bpm) were programmed in addition to a ventricular fibrillation (VF) zone (>222 bpm).
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-28
      DOI: 10.1016/j.joa.2017.02.001
  • Airway support using a pediatric intubation tube in adult patients with
           atrial fibrillation: A simple and unique method to prevent heart movement
           during catheter ablation under continuous deep sedation

    • Authors: Masateru Takigawa; Atsushi Takahashi, Taishi Kuwahara, Kenji Okubo, Emiko Nakashima, Yuji Watari, Kazuya Yamao, Jun Nakajima, Yasuaki Tanaka, Katsumasa Takagi, Shigeki Kimura, Hiroyuki Hikita, Kenzo Hirao, Mitsuaki Isobe
      Abstract: The present study aimed to elucidate the safety and effectiveness of a noble and unique airway management technique in which a pediatric intubation tube is used in adult patients with atrial fibrillation (AF) undergoing catheter ablation (CA) under continuous deep sedation.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-18
      DOI: 10.1016/j.joa.2017.01.003
  • Asystole in focal epilepsy complicating a traumatic subdural hematoma

    • Authors: Yuk-Ming Lau; Chi-Hung Lo, Kathy Lai-Fun Lee, Chu-Pak Lau
      Abstract: Ictal asystole due to sinus node suppression is a cause of sudden unexplained death in epilepsy. Here, for the first time, we describe a complete atrioventricular nodal block in a patient with non-compressive traumatic subdural hematoma, who developed ictal asystole as a delayed presentation. A leadless VVI pacemaker (ventricular paced, ventricular sensed, and pacing inhibited in response to a sensed beat) was implanted as a preventive measure against seizure-related heart block.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-16
      DOI: 10.1016/j.joa.2017.01.004
  • Wavefront direction and cycle length affect left atrial electrogram

    • Authors: Kazuki Iso; Ichiro Watanabe, Rikitake Kogawa, Yasuo Okumura, Koichi Nagashima, Keiko Takahashi, Ryuta Watanabe, Masaru Arai, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama, Mizuki Nikaido
      Abstract: The relationship between atrial electrogram (EGM) characteristics in atrial fibrillation (AF) and those in sinus rhythm (SR) are generally unknown. The activation rate and direction may affect EGM characteristics. We examined characteristics of left atrial (LA) EGMs obtained during pacing from different sites.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-13
      DOI: 10.1016/j.joa.2017.01.001
  • Feasibility, safety, and potential demand of emergent brain magnetic

    • Authors: Maki Ono; Makoto Suzuki, Mitsuaki Isobe
      Abstract: The feasibility, safety, and potential demand of emergent magnetic resonance imaging (MRI) of patients with a cardiac implantable electronic device (CIED) in emergency situations are unknown.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-10
      DOI: 10.1016/j.joa.2017.01.002
  • Intracoronary acetylcholine application as a possible probe inducing J
           waves in patients with early repolarization syndrome

    • Authors: Toru Maruyama; Kazumasa Fujita, Kei Irie, Shouhei Moriyama, Mitsuhiro Fukata
      Abstract: Acetylcholine is widely used for a diagnostic provocation test of coronary spasm in patients with vasospastic angina. Acetylcholine usually induces coronary vasodilatation mediated by muscarinic receptor activation, but sometimes it evokes vasoconstriction of coronary arteries where the endothelium is damaged. Early repolarization syndrome is characterized by a J wave observed at the end of the QRS complex in a surface electrocardiogram. The J wave is attributed to the transmural voltage gradient at the early repolarization phase across the ventricular wall, which stems mainly from prominent transient outward current in the epicardium, but not in the endocardium.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-06
      DOI: 10.1016/j.joa.2016.12.005
  • High-resolution mapping and ablation of recurrent left lateral accessory
           pathway conduction

    • Authors: Francesco Solimene; Vincenzo Schillaci, Gergana Shopova, Francesco Maddaluno, Maurizio Malacrida, Giuseppe Stabile
      Abstract: Proper localization of the anatomical target during ablation of the accessory pathways (AP) and the ability to detect clear AP potentials on the ablation catheter are crucial for successful AP ablation. We report a case of recurring AP conduction that was finally eliminated using a novel ablation catheter equipped with high-resolution mini-electrodes. Smaller and closer electrodes result in high mapping resolution with less signal averaging and cancellation effects. Owing to improved sensitivity, the new catheter seems effective in detecting fragmented and high frequency signals, thus allowing more effective radiofrequency application and improving ablation success.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-02-04
      DOI: 10.1016/j.joa.2016.12.003
  • Percutaneous renal sympathetic denervation in catecholaminergic
           polymorphic ventricular tachycardia

    • Authors: Tolga Aksu; Erdem Guler
      Abstract: Catheter-based renal sympathetic denervation may be an alternative after unsuccessful conventional ablation attempts.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-01-28
      DOI: 10.1016/j.joa.2016.12.004
  • Simulation of ventricular rate control during atrial fibrillation using
           ionic channel blockers

    • Authors: Shin Inada; Nitaro Shibata, MD, PhD, Michiaki Iwata, PhD, Ryo Haraguchi, PhD, Takashi Ashihara MD, PhD, Takanori Ikeda, MD, PhD, Kazuyuki Mitsui, PhD, Halina Dobrzynski, PhD, Mark R. Boyett, PhD, Kazuo Nakazawa, PhD
      Abstract: The atrioventricular (AV) node is the only compartment that conducts an electrical impulse between the atria and the ventricles. The main role of the AV node is to facilitate efficient pumping by conducting excitation slowly between the two chambers as well as reduce the ventricular rate during atrial fibrillation (AF).
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-01-23
      DOI: 10.1016/j.joa.2016.12.002
  • Current use of direct oral anticoagulants for atrial fibrillation in
           Japan: Findings from the SAKURA AF Registry

    • Authors: Yasuo Okumura; Katsuaki Yokoyama, Naoya Matsumoto, Eizo Tachibana, Keiichiro Kuronuma, Koji Oiwa, Michiaki Matsumoto, Toshiaki Kojima, Shoji Hanada, Kazumiki Nomoto, Ken Arima, Fumiyuki Takahashi, Tomobumi Kotani, Yukitoshi Ikeya, Seiji Fukushima, Satoru Itoh, Kunio Kondo, Masaaki Chiku, Yasumi Ohno, Motoyuki Onikura, Atsushi Hirayama, the SAKURA AF Registry Investigators
      Abstract: Large-scale investigations on the use of oral anticoagulants including direct oral anticoagulants (DOACs) in patients with atrial fibrillation (AF) have not included Japanese patients.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-01-03
      DOI: 10.1016/j.joa.2016.11.003
  • Focal ablation for atrial tachycardia from the double-exit of the Marshall
           bundle inducing atrial fibrillation

    • Authors: Jung Yeon Chin; Jong Woo Kim, Ki-Woon Kang
      Abstract: Atrial fibrillation (AF) from the ligament/vein of Marshall (LOM/VOM) has previously been described. We report the case of a 23-year-old woman with an antiarrhythmic drug-resistant AF induced by two distinct atrial tachycardias (ATs). Focal ablation of these ATs from the double-exit of the Marshall bundle using a three-dimensional map eliminated AF triggering, even though pulmonary vein electrical isolation is the cornerstone for paroxysmal AF. Such mechanisms are important as triggering factors to plan ablation for paroxysmal AF.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-01-03
      DOI: 10.1016/j.joa.2016.11.002
  • Importance of exercise testing shortly after subcutaneous implantable
           cardioverter-defibrillator implantation in patients with Brugada syndrome
           – The first case of associated inappropriate shock in Japan

    • Authors: Kohei Ishibashi; Takashi Noda, Tsukasa Kamakura, Mitsuru Wada, Yuko Inoue, Hideo Okamura, Kengo Kusano
      First page: 156
      Abstract: We report the case of a 51-year-old patient with Brugada syndrome (BrS) who experienced inappropriate shock due to T-wave oversensing (TWOS) during exercise when the optimal sensing vector was selected based on the automatic analysis by a subcutaneous implantable cardioverter-defibrillator (S-ICD). After selecting another vector during exercise testing, TWOS did not re-occur. Selection of appropriate sensing vector based on analyses under various conditions, including during exercise after S-ICD implantation, should be considered for patients with BrS.
      Citation: Journal of Arrhythmia (2017)
      PubDate: 2017-03-07
      DOI: 10.1016/j.joa.2016.07.006
  • Scar characteristics derived from two- and three-dimensional
           reconstructions of cardiac contrast-enhanced magnetic resonance images:

    • Authors: Kazumasa Sonoda; Yasuo Okumura, Ichiro Watanabe, Koichi Nagashima, Hiroaki Mano, Rikitake Kogawa, Naoko Yamaguchi, Keiko Takahashi, Kazuki Iso, Kimie Ohkubo, Toshiko Nakai, Satoshi Kunimoto, Atsushi Hirayama
      Abstract: The relationship between cardiac contrast-enhanced magnetic resonance imaging (CE-MRI)-derived scar characteristics and substrate for ventricular tachycardia (VT) in patients with structural heart disease (SHD) has not been fully investigated.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-12-31
      DOI: 10.1016/j.joa.2016.11.001
  • Efficacy of ranolazine in preventing atrial fibrillation following cardiac
           surgery: Results from a meta-analysis

    • Authors: Chintan Trivedi; Ankit Upadhyay, Kinjal Solanki
      Abstract: Atrial fibrillation (AF) is a common complication after cardiac surgery. Ranolazine is a Food and Drug Administration approved anti-ischemic drug, which also has anti-arrhythmic properties. Recent studies have demonstrated the benefit of ranolazine in preventing post-operative AF (POAF) in patients undergoing cardiac surgery. Hence, we performed a meta-analysis of published studies comparing ranolazine plus standard therapy versus standard therapy for POAF prevention in patients undergoing cardiac surgery.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-12-05
  • Pulmonary vein potential mapping in atrial fibrillation with high density
           and standard spiral (lasso) catheters: A comparative study

    • Authors: Axel Meissner; Petra Maagh, Arnd Christoph, Ahmet Oernek, Gunnar Plehn
      Abstract: The dominant single-shot procedure for Pulmonary Vein Isolation (PVI) is the Cryoballoon Ablation (CBA) technique using a spiral catheter (Achieve™, AC) for mapping and monitoring purposes. We hypothesized that Basket Catheters, such as the High Density Mesh Mapper (HDMM), with its high-density mapping properties, could detect Pulmonary Vein Potentials (PVPs) that the octapolar AC would not be able to identify.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-11-25
  • Diffuse interstitial fibrosis assessed by cardiac magnetic resonance is
           associated with dispersion of ventricular repolarization in patients with
           hypertrophic cardiomyopathy

    • Authors: David Hurtado-de-Mendoza; Celia P. Corona-Villalobos, Iraklis Pozios, Jorge Gonzales, Yalda Soleimanifard, Sanjay Sivalokanathan, Diego Montoya-Cerrillo, Styliani Vakrou, Ihab Kamel, Wilfredo Mormontoy-Laurel, Ketty Dolores-Cerna, Jacsel Suarez, Sergio Perez-Melo, David A. Bluemke, Theodore P. Abraham, Stefan L. Zimmerman, M. Roselle Abraham
      Abstract: Hypertrophic cardiomyopathy (HCM) is characterized by myocyte hypertrophy, disarray, fibrosis, and increased risk for ventricular arrhythmias. Increased QT dispersion has been reported in patients with HCM, but the underlying mechanisms have not been completely elucidated. In this study, we examined the relationship between diffuse interstitial fibrosis, replacement fibrosis, QTc dispersion and ventricular arrhythmias in patients with HCM. We hypothesized that fibrosis would slow impulse propagation and increase dispersion of ventricular repolarization, resulting in increased QTc dispersion on surface electrocardiogram (ECG) and ventricular arrhythmias.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-11-19
  • Epicardially placed implantable cardioverter-defibrillator for a child
           with congenital long QT syndrome

    • Authors: Hirotaro Sugiyama; Motomi Tachibana, Hiroshi Morita, Nobuhiro Nishii, Akihito Miyoshi, Hiroyasu Sugiyama, Koji Nakagawa, Atsuyuki Watanabe, Kazufumi Nakamura, Hiroshi Ito
      Abstract: A 7-year-old boy presented at our hospital with syncope. At birth, electrocardiography had shown a long QT interval with torsade de pointes (TdP). Congenital long QT syndrome (LQTS) had been diagnosed by genetic testing, and was successfully controlled with oral propranolol. At age 7, TdP had recurred with syncope. Electrocardiography revealed a prominent long QT interval with T-wave alternans. The propranolol dose was increased, but TdP remained uncontrolled. A cardioverter-defibrillator (ICD) was implanted epicardially, and TdP completely resolved with atrial pacing.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-11-10
  • Remote magnetic catheter navigation versus conventional ablation in atrial
           fibrillation ablation: Fluoroscopy reduction

    • Authors: Paul Chun Yih Lim; Joseph Jia Hong Toh, Julian Kenrick Xing Yuan Loh, Edward Chun Yi Lee, Daniel Thuan Tee Chong, Boon Yew Tan, Kah Leng Ho, Chi Keong Ching, Wee Siong Teo
      Abstract: Percutaneous transcatheter radiofrequency ablation of atrial fibrillation with remote controlled magnetic navigation (RMN) has been shown to reduce radiation exposure to patients and physicians compared with conventional manual (MAN) ablation techniques.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-11-10
      DOI: 10.1016/j.joa.2016.08.007
  • A proposal of clinical ECG index “vagal score” for determining the
           mechanism of paroxysmal atrioventricular block

    • Authors: Sayaka Komatsu; Masataka Sumiyoshi, Seiji Miura, Yuki Kimura, Tomoyuki Shiozawa, Keiko Hirano, Fuminori Odagiri, Haruna Tabuchi, Hidemori Hayashi, Gaku Sekita, Takashi Tokano, Yuji Nakazato, Hiroyuki Daida
      Abstract: Paroxysmal atrioventricular block (P-AVB) is a well-known cause of syncope; however, its underlying mechanism is difficult to determine. This study aimed to evaluate a new ECG index, the “vagal score (VS),” to determine the mechanism of P-AVB.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-11-09
  • Anatomical dilatation of the superior vena cava associated with an
           arrhythmogenic response induced by SVC scan pacing after atrial
           fibrillation ablation

    • Authors: Hiroshi Imada; Koji Fukuzawa, Kunihiko Kiuchi, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Jun Kurose, Shumpei Mori, Tomofumi Takaya, Tatsuya Nishii, Kiyosumi Kagawa, Akihiro Yoshida, Hirata Ken-ichi
      Abstract: The relationship between pulmonary vein (PV) arrhythmogenicity and its anatomy has been reported. However, that of the superior vena cava (SVC) has not been well discussed. Arrhythmogenic response induced by pacing stimulation at SVC might help with identifying SVC arrhythmogenicity. The purpose of this study was to investigate the relationship between the anatomical dilatation of SVC and the arrhythmogenic response induced by pacing at SVC.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-27
  • Report of periprocedural oral anticoagulants in catheter ablation for
           atrial fibrillation: The Japanese Catheter Ablation Registry of Atrial
           Fibrillation (J-CARAF)

    • Authors: Yuji Murakawa; Akihiko Nogami, Morio Shoda, Koichi Inoue, Shigeto Naito, Koichiro Kumagai, Yasushi Miyauchi, Teiichi Yamane, Norishige Morita, Hideo Mitamura, Ken Okumura, Kenzo Hirao, on behalf of the Japanese Heart Rhythm Society Members
      Abstract: To obtain a perspective of the current status of catheter ablation for the cure of atrial fibrillation, the Japanese Heart Rhythm Society conducted a nationwide survey: the Japanese Catheter Ablation Registry of Atrial Fibrillation. In this report, we aimed to evaluate the periprocedural use of direct oral anticoagulants with respect to thromboembolic or bleeding complications.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-27
  • Complex fractionated atrial electrograms, high dominant frequency regions,
           and left atrial voltages during sinus rhythm and atrial fibrillation

    • Authors: Naoko Sasaki; Ichiro Watanabe, Yasuo Okumura, Koichi Nagashima, Rikitake Kogawa, Kazumasa Sonoda, Kazuki Iso, Keiko Takahashi, Masaru Arai, Ryuta Watanabe, Sayaka Kurokawa, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama, Mizuki Nikaido
      Abstract: Ablation targeting complex fractionated atrial electrograms (CFAEs) or high dominant frequency (DF) sites is generally effective for persistent atrial fibrillation (AF). CFAEs and/or high DF sites may exist in low-voltage regions, which theoretically represent abnormal substrates. However, whether CFAEs or high DF sites reflect low voltage substrates during sinus rhythm (SR) is unknown.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-27
  • Catechin and epicatechin reduce mitochondrial dysfunction and oxidative
           stress induced by amiodarone in human lung fibroblasts

    • Authors: Luciana Fernandes Silva Santos; Adriana Stolfo, Caroline Calloni, Mirian Salvador
      Abstract: Amiodarone (AMD) and its metabolite N-desethylamiodarone can cause some adverse effects, which include pulmonary toxicity. Some studies suggest that mitochondrial dysfunction and oxidative stress may play a role in these adverse effects. Catechin and epicatechin are recognized as important phenolic compounds with the ability to decrease oxidative stress. Therefore, the aim of this study was to evaluate the potential of catechin and epicatechin to modulate mitochondrial dysfunction and oxidative damage caused by AMD in human lung fibroblast cells (MRC-5).
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-22
      DOI: 10.1016/j.joa.2016.09.004
  • Molecular mechanisms underlying the pilsicainide-induced stabilization of
           hERG proteins in transfected mammalian cells

    • Authors: Takeshi Onohara; Ichiro Hisatome, Yasutaka Kurata, Peili Li, Tomomi Notsu, Kumi Morikawa, Naoyuki Otani, Akio Yoshida, Kazuhiko Iitsuka, Masaru Kato, Junichiro Miake, Haruaki Ninomiya, Katsumi Higaki, Yasuaki Shirayoshi, Takashi Nishihara, Toshiyuki Itoh, Yoshinobu Nakamura, Motonobu Nishimura
      Abstract: Pilsicainide, classified as a relatively selective Na+ channel blocker, also has an inhibitory action on the rapidly-activating delayed-rectifier K+ current (IKr) through human ether-a-go-go-related gene (hERG) channels. We studied the effects of chronic exposure to pilsicainide on the expression of wild-type (WT) hERG proteins and WT-hERG channel currents, as well as on the expression of mutant hERG proteins, in a heterologous expression system.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-19
      DOI: 10.1016/j.joa.2016.09.003
  • Manifestation of J wave induced by acetylcholine applied for a coronary
           spasm provocation test in a patient with aborted sudden cardiac death

    • Authors: Hiroyuki Kodama; Kazumasa Fujita, Shouhei Moriyama, Kei Irie, Hirotaka Noda, Taku Yokoyama, Mitsuhiro Fukata, Takeshi Arita, Keita Odashiro, Toru Maruyama, Koichi Akashi
      Abstract: A 51-year-old man with a resuscitation episode was referred to our hospital. Coronary angiography revealed a focal spasm overlapped with organic stenosis where a bare metal stent was implanted. Acetylcholine (ACh) provocation test did not induce chest pain. It revealed no discernible ST-T changes but unmasked a J wave at the end of the QRS complex, which was associated with short-coupled repetitive premature ventricular beats. A J wave reportedly appears immediately before the onset of ventricular fibrillation caused by vasospastic angina.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-14
      DOI: 10.1016/j.joa.2016.09.001
  • Syncope in a patient with a dual-chamber pacemaker: What is the possible

    • Authors: Yavuzer Koza; Ziya Simsek, Selim Aydemir, Remziye Doğan
      Abstract: A 90-year-old woman with hypertension and a history of a dual-chamber, rate-modulated (DDDR) pacemaker implantation 9 years previously presented to the hospital with complaints of syncope, moderate shortness of breath, and a headache. She denied any other symptoms. Her vital signs were as follows: blood pressure, 110/80mmHg; pulse, 35beats/min (bpm); and respiratory rate, 18 breaths/min. One month before presentation, she had undergone pacemaker replacement due to battery depletion at another hospital.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-07
      DOI: 10.1016/j.joa.2016.09.002
  • Influence of myopotential interference on the Wavelet discrimination
           algorithm in implantable cardioverter-defibrillator

    • Authors: Kazuya Mizukami; Hisashi Yokoshiki, Hirofumi Mitsuyama, Masaya Watanabe, Taro Tenma, Rui Kamada, Masayuki Takahashi, Ryo Sasaki, Motoki Maeno, Hiroyuki Tsutsui
      Abstract: Wavelet is a morphology-based algorithm for detecting ventricular tachycardia. The electrogram (EGM) source of the Wavelet algorithm is nominally programmed with the Can-RV coil configuration, which records a far-field ventricular potential. Therefore, it may be influenced by myopotential interference.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-10-01
      DOI: 10.1016/j.joa.2016.08.005
  • Long RP interval tachycardia. What is the mechanism'

    • Authors: Javier Jiménez-Díaz; María-Arantzazu González-Marín, Juan J. González-Ferrer, Felipe Higuera-Sobrino
      Abstract: A 41-year-old man with a history of tachycardia refractory to multiple antiarrhythmic drugs was sent to our institution. His 12-lead electrocardiogram demonstrated incessant narrow QRS complex tachycardia with negative P waves in the inferior leads and long RP interval. Occasionally, the tachycardia terminated after a P wave and then was restarted after a sinusal beat. An EP study was performed during tachycardia. Intracardiac electrograms during tachycardia and response to pacing maneuvers are shown.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-31
      DOI: 10.1016/j.joa.2016.06.004
  • Identification and management of right ventricular perforation using
           pacemaker and cardioverter-defibrillator leads: A case series and mini

    • Authors: Mohammad Ali Akbarzadeh; Reza Mollazadeh, Salma Sefidbakht, Soraya Shahrzad, Negar Bahrololoumi Bafruee
      First page: 1
      Abstract: Right ventricular perforation is a rare but serious complication of permanent pacemaker and implantable cardioverter-defibrillator implantation, with a reported prevalence rate of 0.1–6%. Generally, there is a high incidence of asymptomatic lead perforation with otherwise normal function. Some patients present with a stabbing chest pain and shortness of breath or pacemaker malfunction. However, in some cases, tamponade or adjacent tissue injury may be seen. The exact risk factors for lead perforation are not yet clear.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-30
      DOI: 10.1016/j.joa.2016.05.005
  • Byung Gyu Kim et al.: Reduced systemic vascular resistance is the
           underlying hemodynamic mechanism in nitrate-stimulated vasovagal syncope
           during head-up tilt-table test

    • Authors: Arttu Eräranta; Antti Tikkakoski, Ilkka H. Pörsti
      First page: 6
      Abstract: Dear Editor
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-01
      DOI: 10.1016/j.joa.2016.04.001
  • Non-vitamin K antagonist oral anticoagulants versus warfarin for
           cardioversion of atrial fibrillation in clinical practice: A single-center

    • Authors: Naoki Shibata; Itsuro Morishima, Kenji Okumura, Yasuhiro Morita, Kensuke Takagi, Ruka Yoshida, Hiroaki Nagai, Toshiro Tomomatsu, Yoshihiro Ikai, Kazushi Terada, Kazuhito Tsuzuki, Hideyuki Tsuboi, Takahito Sone, Toyoaki Murohara
      First page: 7
      Abstract: Anticoagulation therapy with the vitamin K antagonist (VKA) warfarin has been demonstrated to reduce thromboembolic risk after electrical cardioversion (ECV). However, data concerning ECV with non-VKA oral anticoagulants (NOACs) is limited. The objective of this study was to determine the efficacy and safety of NOACs in patients undergoing ECV in a real-world clinical practice at a single center in Japan.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-01
      DOI: 10.1016/j.joa.2016.04.003
  • Long-term reliability of sweet-tip type screw-in leads

    • Authors: Asuka Takano; Gaku Sekita, Minako Watanabe, Hiroshi Mukaida, Sayaka Komatsu, Haruna Tabuchi, Hidemori Hayashi, Takashi Tokano, Masataka Sumiyoshi, Yuji Nakazato, Hiroyuki Daida
      First page: 12
      Abstract: Active fixation leads have provided stable atrial and ventricular pacing; however, long-term follow-up data have not been satisfactory. The purpose of this study was to investigate the long-term reliability of active fixation leads and their electrical characteristic stability.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-22
      DOI: 10.1016/j.joa.2016.04.008
  • Mortality and predictors of appropriate implantable cardioverter
           defibrillator therapy in Japanese patients with Multicenter Automatic
           Defibrillator Implantation Trial II criteria

    • Authors: Yoshimori An; Kenji Ando, Yoshimitsu Soga, Akihiro Nomura, Michio Nagashima, Kentaro Hayashi, Yu Makihara, Masato Fukunaga, Ken-ichi Hiroshima, Masakiyo Nobuyoshi, Masahiko Goya
      First page: 17
      Abstract: Data regarding long-term mortality and factors influencing appropriate therapies in Japanese patients with implantable cardioverter defibrillators (ICD), who satisfy the Multicenter Automatic Defibrillator Implantation Trial II (MADIT II) criteria for primary prevention, remain scarce.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-27
      DOI: 10.1016/j.joa.2016.01.012
  • Immediate discontinuation of ablation during pulmonary vein isolation
           remarkably decreases the incidence of esophageal thermal lesions even when
           using steerable sheaths

    • Authors: Norikazu Watanabe; Yuta Chiba, Yoshimi Onishi, Shiro Kawasaki, Yumi Munetsugu, Yoshimasa Onuma, Hiroyuki Itou, Tatsuya Onuki, Yoshino Minoura, Taro Adachi, Mitsuharu Kawamura, Taku Asano, Kaoru Tanno, Yutarou Kubota, Kazuo Konishi, Youichi Kobayashi
      First page: 23
      Abstract: Left atrial–esophageal fistulas (LAEFs) are serious complications with high mortality after atrial fibrillation radiofrequency ablation (AFRA). Decreasing the incidence of esophageal thermal lesions (EsoTLs) that may lead to LAEFs is important. The aim of this study was to suppress EsoTL development and determine the appropriate alarm setting for a temperature-monitoring probe by using steerable sheath (STS) methods.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-03
      DOI: 10.1016/j.joa.2016.05.001
  • Functional characteristics of left ventricular synchronization via right
           ventricular outflow-tract pacing detected by two-dimensional strain

    • Authors: Yasutaka Hirayama; Yuichiro Kawamura, Nobuyuki Sato, Tatsuya Saito, Hideichi Tanaka, Yasuaki Saijo, Kenjiro Kikuchi, Katsumi Ohori, Naoyuki Hasebe
      First page: 28
      Abstract: Recently, due to the detrimental effects on the ventricular function associated with right ventricular apical (RVA) pacing, right ventricular septal (RVS) pacing has become the preferred pacing method. However, the term RVS pacing refers to both right ventricular outflow-tract (RVOT) and mid-septal (RVMS) pacing, leading to a misinterpretation of the results of clinical studies. The purpose of this study, therefore, was to elucidate the functional differences of RVA, RVOT, and RVMS pacing in patients with atrioventricular block.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-24
      DOI: 10.1016/j.joa.2016.04.009
  • Cardiac conduction defects and Brugada syndrome: A family with overlap
           syndrome carrying a nonsense SCN5A mutation

    • Authors: Hisaaki Aoki; Yoshihide Nakamura, Seiko Ohno, Takeru Makiyama, Minoru Horie
      First page: 35
      Abstract: Phenotypes often differ even within family members carrying the same SCN5A mutation. We aimed to evaluate the genetic modifiers in a family with Brugada syndrome (BrS) and sick sinus syndrome (SSS) with an SCN5A mutation that causes the truncated alpha-subunit of cardiac Na channel protein.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-07-03
      DOI: 10.1016/j.joa.2016.05.007
  • Spatiotemporal characteristics of atrial fibrillation electrograms: A
           novel marker for arrhythmia stability and termination

    • Authors: Shivshankar Thanigaimani; Anthony G. Brooks, Pawel Kuklik, Darragh J. Twomey, Samantha Franklin, Erik Noschka, Darius Chapman, Rajeev K. Pathak, Rajiv Mahajan, Prashanthan Sanders, Dennis H. Lau
      First page: 40
      Abstract: Sequentially mapped complex fractionated atrial electrograms (CFAE) and dominant frequency (DF) sites have been targeted during catheter ablation for atrial fibrillation (AF). However, these strategies have yielded variable success and have not been shown to correlate consistently with AF dynamics. Here, we evaluated whether the spatiotemporal stability of CFAE and DF may be a better marker of AF sustenance and termination.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-07-27
      DOI: 10.1016/j.joa.2016.05.009
  • Evaluation of the characteristics of rotational activation at
           high-dominant frequency and complex fractionated atrial electrogram sites
           during atrial fibrillation

    • Authors: Koji Kumagai; Kentaro Minami, Daisuke Kutsuzawa, Shigeru Oshima
      First page: 49
      Abstract: High-dominant frequency (DF) and continuous complex fractionated atrial electrogram (CFAE) sites as surrogates for localized sources maintaining atrial fibrillation (AF) are potential AF ablation targets. This study aimed to evaluate the characteristics of a rotational activation at high-DF and continuous CFAE sites in AF patients.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-07-12
      DOI: 10.1016/j.joa.2016.05.008
  • Red cell distribution width and all-cause mortality in patients with
           atrial fibrillation: A cohort study

    • Authors: Walid Saliba; Ofra Barnett-Griness, Gad Rennert
      First page: 56
      Abstract: Increased red cell distribution width (RDW), a measure of red cell size variability, has been associated with increased mortality in multiple cardiovascular diseases. However, whether RDW is associated with increased mortality in patients with atrial fibrillation remains unknown.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-07-11
      DOI: 10.1016/j.joa.2016.06.001
  • Successful intermuscular implantation of subcutaneous implantable
           cardioverter defibrillator in a Japanese patient with pectus excavatum

    • Authors: Yusuke Kondo; Marehiko Ueda, Joachim Winter, Miyo Nakano, Masahiro Nakano, Masayuki Ishimura, Kazuo Miyazawa, Kaoru Tateno, Yoshio Kobayashi
      First page: 63
      Abstract: The entirely subcutaneous implantable cardioverter-defibrillator (ICD) system was developed to provide a life-saving defibrillation therapy that does not affect the heart and vasculature. The subcutaneous ICD is preferred over the transvenous ICD for patients with a history of recurrent infection presenting major life-threatening rhythms. In this case report, we describe the first successful intermuscular implantation of a completely subcutaneous ICD in a Japanese patient with pectus excavatum. There were no associated complications with the device implantation or lead positioning.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-01
      DOI: 10.1016/j.joa.2016.04.005
  • Successful percutaneous epicardial catheter ablation of ventricular
           tachycardia arising from the crux of the heart in a patient with prior
           coronary artery bypass grafting

    • Authors: Naoki Yoshida; Takumi Yamada
      First page: 66
      Abstract: A 63-year-old man with a history of remote inferior myocardial infarction and coronary artery bypass grafting (CABG) underwent catheter ablation of ventricular tachycardia (VT). Epicardial catheter ablation of the VT was successful at the crux of the heart despite limited mapping within the pericardial space due to pericardial adhesion. Percutaneous subxiphoidal pericardial approach is usually impossible in patients with a history of open heart surgery due to pericardial adhesions. This report suggested that epicardial VT arising from the crux of the heart could be successfully treated by catheter ablation via subxiphoidal pericardial approach despite pericardial adhesions complicated by prior CABG.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-01
      DOI: 10.1016/j.joa.2016.04.007
  • Bidirectional ventricular tachycardia in cardiac sarcoidosis

    • Authors: Mina M. Benjamin; Kevin Hayes, Michael E. Field, Melvin M. Scheinman, Kurt S. Hoffmayer
      First page: 69
      Abstract: A 73-year-old man with history of pulmonary sarcoidosis was found to have runs of non-sustained bidirectional ventricular tachycardia (BVT) with two different QRS morphologies on a Holter monitor. Cardiac magnetic resonance delayed gadolinium imaging revealed a region of patchy mid-myocardial enhancement within the left ventricular basal inferolateral myocardium. An 18-fluorodeoxyglucose positron emission tomography (FDG-PET) showed increased uptake in the same area, consistent with active sarcoid, with no septal involvement.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-04
      DOI: 10.1016/j.joa.2016.05.003
  • Inappropriate shocks from a subcutaneous implantable
           cardioverter-defibrillator due to oversensing during periods of
           rate-related bundle branch block

    • Authors: Maria João Sousa; Tim Betts
      First page: 73
      Abstract: The subcutaneous implantable cardioverter-defibrillator (S-ICD) is a novel technology with proven efficacy in sudden cardiac death prevention; however, there is a lack of long-term safety data. We describe the case of a 55-year-old female patient implanted with an S-ICD due to idiopathic ventricular fibrillation, who subsequently presented with inappropriate shocks leading to ventricular fibrillation that was successfully terminated by another shock. Inappropriate shocks were due to intermittent T wave oversensing during periods of rate-dependent right bundle branch block.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-09-17
      DOI: 10.1016/j.joa.2016.05.006
  • Electrophysiologic similarities of overdose between digoxin and
           bufadienolides found in a Chinese aphrodisiac

    • Authors: Maxwell Bressman; Daniel Repplinger, William Slater, Mitchell Platt
      First page: 76
      Abstract: Classically derived from toad venom, bufadienolides are a group of cardioactive steroids with properties similar to digoxin. Some traditional Chinese medications, including several aphrodisiacs, contain bufadienolides. Owing to their physiologic similarities to digoxin, bufadienolides have been shown to produce a toxic profile similar to that of digoxin and there have been multiple case reports of the use of these aphrodisiacs resulting in death. This report will describe a case that illustrates the electrophysiologic similarities between bufadienolide toxicity and digoxin toxicity as well as the treatment of bufadienolide toxicity.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-30
      DOI: 10.1016/j.joa.2016.05.004
  • Reply: Takotsubo syndrome and polymorphic ventricular tachycardia: The
           chicken or the egg

    • Authors: Rintaro Hojo; Seiji Fukamizu, Masayasu Hiraoka
      First page: 79
      Abstract: Reply to Dr. Medias
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-06-24
      DOI: 10.1016/j.joa.2016.04.006
  • A multicenter study of the need of additional freezing for cryoballoon
           ablation in patients with atrial fibrillation: The AD-Balloon study

    • Authors: Koji Miyamoto; Atsushi Doi, Naoki Amaya, Yoshiaki Morita, Takashi Noda, Masanori Asakura, Toshimitsu Hamasaki, Hiroshi Tada, Masahiko Takagi, Satoshi Yasuda, Kengo Kusano
      First page: 81
      Abstract: Pulmonary vein isolation (PVI) is a cornerstone of catheter ablation in patients with paroxysmal atrial fibrillation (PAF), and balloon-based ablation has been recently performed worldwide. Ablation using the second-generation cryoballoon (CB2) (Arctic Front AdvanceTM, Medtronic, MN, USA) is useful for PVI; however, there is some debate concerning the optimal freezing time and number of cycles after PVI is achieved.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-07-27
      DOI: 10.1016/j.joa.2016.06.005
  • Crucial role of pulmonary vein firing as an initiator of typical atrial
           flutter: Evidence of a close relationship between atrial fibrillation and
           typical atrial flutter

    • Authors: Takashi Kaneshiro; Kentaro Yoshida, Yukio Sekiguchi, Hiroshi Tada, Kenji Kuroki, Keisuke Kuga, Yoshiyuki Kamiyama, Hitoshi Suzuki, Yasuchika Takeishi, Kazutaka Aonuma
      First page: 86
      Abstract: Several studies reported that cavotricuspid isthmus-dependent atrial flutter (typical AFL) frequently coexists with atrial fibrillation (AF); however, the underlying mechanisms have not been fully investigated. This study aimed to reveal the mechanisms of the initiation of typical AFL and the association between typical AFL and AF.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-18
      DOI: 10.1016/j.joa.2016.07.013
  • The utility of atrial pacing for identifying the electrical breakthrough
           sites between the left atrium and pulmonary veins

    • Authors: Shinya Sugiura; Koji Matsuoka, Hideki Noda, Naoya Kurata, Misa Uemori, Hirokazu Shioji, Akihiro Takasaki, Takafumi Koji, Takashi Tanigawa, Masaaki Ito
      First page: 92
      Abstract: Circumferential pulmonary vein (PV) isolation for atrial fibrillation (AF) is occasionally difficult to achieve because electrical breakthrough sites (EBSs) between the left atrium (LA) and PVs cannot be identified during ablation especially in the carina regions.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-09-19
      DOI: 10.1016/j.joa.2016.08.004
  • Major determinants for the selecting antithrombotic therapies in patients
           with nonvalvular atrial fibrillation in Japan (JAPAF study)

    • Authors: Koichi Kusakawa; Kouji H. Harada, Tatsuo Kagimura, Akio Koizumi
      First page: 99
      Abstract: Oral anticoagulants (OACs) can help prevent stroke in patients with nonvalvular atrial fibrillation (NVAF). The aim of this study was to characterize the use of OACs other than direct thrombin inhibitors (DTIs) for NVAF.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-11
      DOI: 10.1016/j.joa.2016.06.006
  • Effectiveness and safety of dabigatran versus warfarin in “real-world”
           Japanese patients with atrial fibrillation: A single-center observational

    • Authors: Miyoko Naganuma; Tsuyoshi Shiga, Takehiko Nagao, Atsushi Suzuki, Kagari Murasaki, Nobuhisa Hagiwara
      First page: 107
      Abstract: In “real-world” practice, anticoagulant therapy is indicated for patients whose clinical profiles are not addressed in randomized clinical trials. We assessed the effectiveness and safety of dabigatran versus warfarin in “real-world” Japanese patients with non-valvular atrial fibrillation (NVAF).
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-18
      DOI: 10.1016/j.joa.2016.07.007
  • Rationale and design of ASSAF-K (A study of the safety and efficacy of
           anticoagulant therapy in the treatment of atrial fibrillation in Kanagawa)

    • Authors: Yutaka Hatori; Hiroyuki Sakai, Tomoyuki Kunishima, Nobuo Hatori, Lin Chen, Tomoaki Ishigami, Naoki Satoh, on Behalf of the ASSAF-K Investigators
      First page: 111
      Abstract: Atrial fibrillation (AF) is one of the most prevalent cardiac arrhythmias associated with substantially increased risks of ischemic stroke and thromboembolism. Oral anticoagulants (OACs) are the cornerstone of AF management and effectively prevent AF-related stroke. As new non-vitamin K antagonist OACs (NOACs) have become available, the landscape of stroke prevention in AF has changed. However, there are considerable gaps between daily clinical practice and current guideline-based recommendations for anticoagulant therapy in Japan.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-26
      DOI: 10.1016/j.joa.2016.07.008
  • Trends in physiological coagulation factors in Japanese patients receiving
           novel oral anticoagulants

    • Authors: Tomoyuki Nagao; Hiroshi Hunakubo, Mayu Suzuki, Takashi Kataoka, Satoshi Okumura, Norihiro Shinoda, Ken Harada, Bunichi Kato, Masataka Kato, Nobuyuki Marui, Shinichi Sakai, Tetsuya Amano, Toyoaki Murohara
      First page: 117
      Abstract: Little is known about physiological anticoagulation effects via antithrombin III (AT III) and protein C/S (PC/PS) in patients using new oral anticoagulants (NOACs).
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-12
      DOI: 10.1016/j.joa.2016.07.011
  • Atrial electromechanical delay in patients undergoing heart

    • Authors: Mustafa Bulut; Mert Evlice, Mehmet Celik, Hayati Eren, Ömer F. Savluk, Rezzan D. Acar, Mustafa Tabakci, Mehmet Y. Emiroglu, Ozlem Otcu (Nurse), Ramazan Kargin, Mehmet Balkanay, Mustafa Akcakoyun
      First page: 122
      Abstract: We aimed to assess atrial electromechanical delay (AEMD) in patients who had undergone heart transplantation.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-09-16
      DOI: 10.1016/j.joa.2016.07.015
  • Comparison of hemodynamic effects of biventricular versus left ventricular
           only pacing in patients receiving cardiac resynchronization therapy: A
           before–after clinical trial

    • Authors: Babak Faghfourian; MD, Shahram Homayoonfar, MD, Mahdi Rezvanjoo, MD, Jalal Poorolajal, MD, PhD, Amir Hossein Emam, MD
      First page: 127
      Abstract: Biventricular (BiV) pacing is the most common mode of delivering cardiac resynchronization therapy (CRT). However, initial clinical studies have indicated that left ventricular (LV) pacing is not inferior to BiV pacing. This study was conducted to address whether LV only pacing can provide the same hemodynamic response as BiV pacing.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-30
      DOI: 10.1016/j.joa.2016.07.014
  • Comparison of the measured pre-ejection periods and left ventricular
           ejection times between echocardiography and impedance cardiography for
           optimizing cardiac resynchronization therapy

    • Authors: Kazuki Noda; Hideaki Endo, Takahide Kadosaka, Takashi Nakata, Tasuku Watanabe, Yosuke Terui, Shoko Kajitani, Yuto Monnma, Kenjiro Sato, Masanori Kanazawa, Sota Nakajima, Masateru Kondo, Tohru Takahashi, Akihiro Nakamura, Eiji Nozaki
      First page: 130
      Abstract: The pre-ejection period (PEP) and left ventricular ejection time (LVET) are easily measured by impedance cardiography (ICG). We hypothesized that the PEP/LVET measured by ICG would correlate with that measured by echocardiography, and that PEP/LVET measured by ICG would be useful for cardiac resynchronization therapy (CRT) optimization.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-09-12
      DOI: 10.1016/j.joa.2016.08.003
  • Relationship between right and left ventricular function in candidates for
           implantable cardioverter defibrillator with low left ventricular ejection

    • Authors: Laura Jimenez-Juan; Gauri R. Karur, Kim A. Connelly, Djeven Deva, Raymond T. Yan, Rachel M. Wald, Sheldon Singh, General Leung, Anastasia Oikonomou, Paul Dorian, Paul Angaran, Andrew T. Yan
      First page: 134
      Abstract: Indications for the primary prevention of sudden death using an implantable cardioverter defibrillator (ICD) are based predominantly on left ventricular ejection fraction (LVEF). However, right ventricular ejection fraction (RVEF) is also a known prognostic factor in a variety of structural heart diseases that predispose to sudden cardiac death. We sought to investigate the relationship between right and left ventricular parameters (function and volume) measured by cardiovascular magnetic resonance (CMR) among a broad spectrum of patients considered for an ICD.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-31
      DOI: 10.1016/j.joa.2016.07.005
  • Automatic atrial capture device control in real-life practice: A
           multicenter experience

    • Authors: Massimo Giammaria; Gianluca Quirino, Mariangela Alberio, Umberto Parravicini, Eliana Cipolla, Guido Rossetti, Antonio Ruocco, Gaetano Senatore, Francesco Rametta, Paolo Pistelli
      First page: 139
      Abstract: Device-based fully automatic pacing capture detection is useful in clinical practice and important in the era of remote care management.The main objective of this study was to verify the effectiveness of the new ACAP Confirm® algorithm in managing atrial capture in the medium term in comparison with early post-implantation testing.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-07-11
      DOI: 10.1016/j.joa.2016.06.002
  • Local conduction during acute myocardial infarction in rats: Interplay
           between central sympathetic activation and endothelin

    • Authors: Theofilos M. Kolettis; Marianthi Kontonika, Vassilios La Rocca, Antonios P. Vlahos, Giannis G. Baltogiannis, Zenon S. Kyriakides
      First page: 144
      Abstract: We investigated the effects of autonomic dysfunction and endothelin on local conduction and arrhythmogenesis during myocardial infarction. We recorded ventricular tachyarrhythmias, monophasic action potentials, and activation sequences in wild-type and ETB-deficient rats displaying high endothelin levels. Central sympathetic inputs were examined after clonidine administration. Clonidine mitigated early and delayed arrhythmogenesis in ETB-deficient and wild-type rats, respectively. The right ventricular activation delay increased in clonidine-treated ETB-deficient rats and slightly decreased in wild-type rats.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-31
      DOI: 10.1016/j.joa.2016.07.010
  • The inferior displacement of the His bundle and fast pathway in a patient
           with common type atrioventricular nodal tachycardia: Three-dimensional
           computed tomography analysis

    • Authors: Kunihiko Kiuchi; Koji Fukuzawa, Mori Shumpei, Tatsuya Nishii
      First page: 147
      Abstract: A 66-year-old woman with palpitations was referred to our center for catheter ablation due to drug-refractory, common type atrioventricular nodal tachycardia (AVNRT). A selective slow pathway ablation was attempted. A fast junctional rhythm with transient ventriculoatrial block followed by transient prolongation of the A–H interval occurred immediately after the radiofrequency (RF) application at the coronary sinus ostium (CSOS) level. To assess the location of the fast pathway and His bundle, we sought to visualize the anatomy of the triangle of Koch (TOK) by three-dimensional computed tomography (CT).
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-18
      DOI: 10.1016/j.joa.2016.07.009
  • Successful pacemaker lead extraction involving an ossified thrombus: A
           case report

    • Authors: Hideo Okamura; John S. Van Arnam, Marie Christine Aubry, Paul A. Friedman, Yong-Mei Cha
      First page: 150
      Abstract: A 41-year-old woman who had been fitted with a pacemaker 18 years prior presented for lead extraction because of device infection. First, we tried laser sheath. However, it cannot cross the binding in the innominate vein. Then we switched to the rotating mechanical sheath. Although it crunched through binding tissue, the progress halted. We removed the sheath and found pieces of calcified tissue in the sheath lumen. After removing the calcified tissue, both leads were extracted using the laser sheath, without complications.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-08-30
      DOI: 10.1016/j.joa.2016.06.007
  • Two cases of inappropriate implantable cardioverter-defibrillator
           therapies due to T wave oversensing induced by body twisting

    • Authors: Nobuhiro Nishii; Akihito Miyoshi, Motoki Kubo, Hiroyasu Sugiyama, Motomi Tachibana, Koji Nakagawa, Atsuyuki Watanabe, Hiroshi Morita, Hiroshi Ito
      First page: 152
      Abstract: T wave oversensing (TWOS) is a common cause of inappropriate implantable cardioverter-defibrillator (ICD) therapies. Various algorithms to avoid inappropriate ICD therapy are available; however, they are not helpful to avoid TWOS. Although the reproduction of TWOS is useful to resolve the problem of TWOS, it is sometimes difficult to reproduce TWOS. We report two cases of inappropriate ICD therapy due to TWOS, which were induced only by body twisting. We can successfully manage the device based on the evidence of reproduced TWOS.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-11-01
      DOI: 10.1016/j.joa.2016.06.003
  • Loss of atrial pacing in a patient with a dual-chamber permanent
           pacemaker: What is the mechanism'

    • Authors: Enes Elvin Gul; Usama Boles, Fariha Sadiq Ali, Hoshiar Abdollah
      First page: 159
      Abstract: A 56-year-old woman with prior history of dual-chamber permanent pacemaker (PPM) implantation (ELA Medical Symphony DR 2550, ELA Medical, Montrouge, France) for symptomatic complete heart block presented to the Cardiac Rhythm Device Clinic because of increased shortness of breath. A surface 12-lead electrocardiogram (ECG) showed no pacing activity in the atrium (Fig. 1). What is the mechanism'
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-09-15
      DOI: 10.1016/j.joa.2016.08.002
  • WITHDRAWN: “Heparin bridging” increases the risk of bleeding
           complications in patients with prosthetic devices and receiving
           anticoagulation therapy

    • Authors: Ryudo Fujiwara; Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Kaoru Takami, Mitsuru Takami, Satoko Tanaka, Mitsuaki Ito, Kimitake Imamura, Ken-ichi Hirata
      Abstract: The Publisher regrets that this article is an accidental duplication of an article that has already been published, 10.1016/j.joa.2011.11.003The duplicate article has therefore been withdrawn.
      Citation: Journal of Arrhythmia (2012)
      PubDate: 2012-06-04
      DOI: 10.1016/j.joa.2011.11.003
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