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Journal Cover   Journal of Arrhythmia
  [SJR: 0.119]   [H-I: 2]   [0 followers]  Follow
   Full-text available via subscription Subscription journal
   ISSN (Print) 1880-4276 - ISSN (Online) 1883-2148
   Published by Elsevier Homepage  [2800 journals]
  • Editorial Board
    • Citation: Journal of Arrhythmia 31, 4 (2015)
      PubDate: 2015-08
      DOI: 10.1016/S1880-4276(15)00095-2
      Issue No: Vol. 31, No. 4 (2015)
  • Lead extraction using a laser system: Techniques, efficacy, and
    • Authors: Hideo Okamura
      Abstract: Transvenous lead extraction is becoming popular in Japan since the approval of laser extraction system in 2010. The laser system seems to be the standard method used by most physicians, owing to its efficacy and ease of handling. The efficacy and safety of this technology has been well proven in many studies and the data suggest that it can be used for Japanese patients safely. However, lead extraction can cause serious complications. Thus, it is important to learn the limitations as well as the basic techniques and efficacy of this procedure.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-08-18
      DOI: 10.1016/j.joa.2015.06.006
  • Biphasic P wave in inferior leads and the development of atrial
    • Authors: Hideki Hayashi; Minoru Horie
      Abstract: Anisotropic and slow conduction in the atrium underlie the development of atrial fibrillation (AF). This study aimed to investigate the P wave characteristics associated with the development of AF in patients with a biphasic P wave in the inferior leads.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-08-11
      DOI: 10.1016/j.joa.2015.06.008
  • Perioperative management for the prevention of bacterial infection in
           cardiac implantable electronic device placement
    • Authors: Katsuhiko Imai
      Abstract: Cardiac implantable electronic devices (CIEDs) have become important in the treatment of cardiac disease and placement rates increased significantly in the last decade. However, despite the use of appropriate antimicrobial prophylaxis, CIED infection rates are increasing disproportionately to the implantation rate. CIED infection often requires explantation of all hardware, and at times results in death. Surgical site infection (SSI) is the most common cause of CIED infection as a pocket infection.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-08-07
      DOI: 10.1016/j.joa.2015.06.007
  • Effect of adenosine triphosphate on left atrial electrogram interval and
           dominant frequency in human atrial fibrillation
    • Authors: Rikitake Kogawa; Yasuo Okumura, Ichiro Watanabe, Masayoshi Kofune, Koichi Nagashima, Hiroaki Mano, Kazumasa Sonoda, Naoko Sasaki, Kazuki Iso, Keiko Takahashi, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama
      Abstract: Complex fractionated atrial electrograms (CFAEs) and high dominant frequency (DF) are targets for atrial fibrillation (AF) ablation. Although adenosine triphosphate (ATP) is known to promote AF by shortening the atrial refractory period, its role in the pathogenesis of CFAEs and DF during AF is not fully understood.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-08-04
      DOI: 10.1016/j.joa.2015.07.001
  • Successful implantable cardioverter-defibrillator implantation through a
           communicating branch of the persistent left superior vena cava
    • Authors: Vineet Kumar; Naoki Yoshida, Takumi Yamada
      Abstract: A left pectoral dual chamber implantable cardioverter-defibrillator (ICD) was successfully implanted through a small branch communicating between a persistent left superior vena cava (PLSVC) and right-sided venous drainage with long sheaths. Postprocedural computed tomography identified the communicating branch. ICD lead implantation through a PLSVC is challenging and sometimes unsuccessful. This case illustrates an alternative approach for ICD lead implantation in patients with a PLSVC. A PLSVC system should be carefully inspected for any communicating branches that can be utilized for lead implantation in order to increase the chance of success and minimize the risk of complications.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-28
      DOI: 10.1016/j.joa.2015.01.005
  • Shortness of breath in a patient with complete heart block and permanent
           pacemaker: A case of effective pacemaker reprogramming
    • Authors: Sandeep Arora
      Abstract: An 82-year-old frail woman with a prior history of hypertension, complete heart block, and dual permanent pacemaker (Sensia DR SEDR01, Medtronic Inc., Minneapolis, MN) presented to pacemaker clinic with symptoms of shortness of breath (SOB), dizziness, and “low pulse rate”. Pacemaker interrogation showed underlying normal sinus rhythm, sinus rate of around 74beats/min with atrial sensed events, and ventricular paced rhythm with frequent symptomatic premature ventricular complexes (PVC). Pacemaker parameters were DDD, lower rate limit (LRL) of 60beats/min, and maximum tracking rate of 120beats/min, along with paced/sensed AV delay of 300/250ms.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-17
      DOI: 10.1016/j.joa.2015.04.010
  • Hemodynamic effects of Purkinje potential pacing in the left ventricular
           endocardium in patients with advanced heart failure
    • Authors: Mamoru Hamaoka; Takanao Mine, Takeshi Kodani, Hideyuki Kishima, Masataka Mitsuno, Tohru Masuyama
      Abstract: Various difficulties can occur in patients who undergo cardiac resynchronization therapy for drug-refractory heart failure with respect to placement of the left ventricular (LV) lead, because of anatomical features, pacing thresholds, twitching, or pacing lead anchoring, possibly requiring other pacing sites. The goal of this study was to determine whether Purkinje potential (PP) pacing could provide better hemodynamics in patients with left bundle branch block and heart failure than biventricular (BiV) pacing.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-17
      DOI: 10.1016/j.joa.2015.06.005
  • A case of premature ventricular contractions, ventricular tachycardia, and
           arrhythmic storm induced by right ventricular pacing during cardiac
           resynchronization therapy: Electrophysiological mechanism and catheter
    • Authors: Stefano Pedretti; Sara Vargiu, Marco Paolucci, Maurizio Lunati
      Abstract: A 77-year-old man with ischemic cardiomyopathy and a cardiac resynchronization therapy-defibrillator (CRT-D) device came to our attention due to incessant ventricular tachycardia and multiple implantable cardioverter defibrillator (ICD) shocks. An electrocardiogram showed non-sustained monomorphic ventricular tachycardias (NSVTs) constantly occurring after each biventricular stimulation. During an electrophysiological study, NSVTs reproducibly recurred only after right ventricular (RV) pacing; LV pacing did not induce any NSVTs.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-14
      DOI: 10.1016/j.joa.2015.06.002
  • Evaluation of periesophageal nerve injury after pulmonary vein isolation
           using the C-acetate breath test
    • Authors: Tomonori Kanaeda; Marehiko Ueda, Makoto Arai, Masayuki Ishimura, Takatsugu Kajiyama, Naotaka Hashiguchi, Masahiro Nakano, Yusuke Kondo, Yasunori Hiranuma, Arata Oyamada, Osamu Yokosuka, Yoshio Kobayashi
      Abstract: Pulmonary vein isolation (PVI) has become an important option for treating patients with atrial fibrillation (AF). Periesophageal nerve (PEN) injury after PVI causes pyloric spasms and gastric hypomotility. This study aimed to clarify the impact of PVI on gastric motility and assess the prevalence of gastric hypomotility after PVI.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-14
      DOI: 10.1016/j.joa.2015.06.004
  • Identifying the true origin of sustained monomorphic ventricular
           tachycardia associated with dilated-phase hypertrophic cardiomyopathy: A
           case of successful catheter ablation
    • Authors: Hiroshi Kawakami; Takayuki Nagai, Akira Fujii, Teruyoshi Uetani, Kazuhisa Nishimura, Katsuji Inoue, Jun Suzuki, Kazuhiro Satomi, Takafumi Okura, Jitsuo Higaki, Akiyoshi Ogimoto
      Abstract: This case report describes sustained monomorphic ventricular tachycardia (VT) caused by a large epicardial scar, related to dilated-phase hypertrophic cardiomyopathy mimicking VT originating from the apical septum. VT resolved with epicardial catheter ablation. The exit of the VT circuit suggested that a 12-lead electrocardiogram can be remote with respect to the critical isthmus in this case. In patients with structural heart disease, it is difficult to identify the VT reentrant circuit by surface electrocardiography, which shows only the exit site.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-13
      DOI: 10.1016/j.joa.2015.06.003
  • Efficacy of ablation at the anteroseptal line for the treatment of
           perimitral flutter
    • Authors: Bernard Abi-Saleh; Hadi Skouri, Daniel J. Cantillon, Jeffery Fowler, Oussama Wazni, Patrick Tchou, Walid Saliba
      Abstract: Left atrial flutter following atrial fibrillation (AF) ablation is increasingly common and difficult to treat. We evaluated the safety and efficacy of ablation of the anteroseptal line connecting the right superior pulmonary vein (RSPV) to the anteroseptal mitral annulus (MA) for the treatment of perimitral flutter (PMF).
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-07-07
      DOI: 10.1016/j.joa.2015.06.001
  • Effects of a high-fat diet on the electrical properties of porcine atria
    • Authors: Yasuo Okumura; Ichiro Watanabe, Koichi Nagashima, Kazumasa Sonoda, Naoko Sasaki, Rikitake Kogawa, Keiko Takahashi, Kazuki Iso, Kimie Ohkubo, Toshiko Nakai, Rie Takahashi, Yoshiki Taniguchi, Masako Mitsumata, Mizuki Nikaido, Atsushi Hirayama
      Abstract: Because obesity is an important risk factor for atrial fibrillation (AF), we conducted an animal study to examine the effect of a high-fat diet (HFD) on atrial properties and AF inducibility.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-17
      DOI: 10.1016/j.joa.2015.05.004
  • Kaya et al. Is it a typical crosstalk: Need for re-implantation'
    • Authors: Mohammad Ali Akbarzadeh
      Abstract: I have read with attention the case report by Kaya et al. entitled “Is it a typical crosstalk: Need for re-implantation'” [1] The authors described atrial lead malfunction in a patient with a dual-chamber pacemaker. The right atrial lead tip was in close proximity to the tricuspid valve, but was it located in the ventricle or atrium' Pacing of the ventricle and the low sensitivity for detection of atrial activation suggest that the tip is located in the ventricle with far-field atrial activity sensation.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-16
      DOI: 10.1016/j.joa.2015.04.009
  • Aortic perforation due to cardiac resynchronisation therapy defibrillator
           lead placement: Case report and medicolegal considerations
    • Authors: Antonino M. Grande; Antonio Fiore, Maurizio Merlano, Fabio Buzzi, Alessandro Mazzola
      Abstract: A 45-year-old woman with dilated cardiomyopathy was admitted for the upgrade of a previously implanted pacemaker. Echocardiography showed intraventricular dyssynchrony and a low ejection fraction (0.35). Treatment with a cardiac resynchronization therapy defibrillator (CRT-D) was selected and the device was implanted. CRT-D interrogation revealed proper function. Following procedure termination, the patient went into cardiac arrest and died despite resuscitation attempts. An autopsy revealed that the medial aspect of the right atrium was pierced by an active lead and that the aorta had a deep lesion, 2mm in length, on its lateral aspect.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-16
      DOI: 10.1016/j.joa.2015.05.002
  • Ability of magnetocardiography to detect regional dominant frequencies of
           atrial fibrillation
    • Authors: Kentaro Yoshida; Kuniomi Ogata, Takeshi Inaba, Yoko Nakazawa, Yoko Ito, Iwao Yamaguchi, Akihiko Kandori, Kazutaka Aonuma
      Abstract: Lead V1 on electrocardiography (ECG) can detect the dominant frequency (DF) of atrial fibrillation (AF) in the right atrium (RA). Paroxysmal AF is characterized by a frequency gradient from the left atrium (LA) to the right atrium (RA). We examined the ability of magnetocardiography (MCG) to detect regional DFs in both the atria.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-09
      DOI: 10.1016/j.joa.2015.05.003
  • A case of inappropriate implantable cardioverter defibrillator therapy
           induced by T-wave oversensing due to hyperkalemia
    • Authors: Kosuke Aoki; Katsunori Okajima, Kunihiko Kiuchi, Kiminobu Yokoi, Jin Teranishi, Akira Shimane
      Abstract: There have been reports of hyperkalemia-induced T-wave oversensing in patients with implantable cardioverter defibrillators (ICDs). However, a comparison of T-wave amplitudes and morphologies between the surface 12-lead electrocardiogram (ECG) and ICD electrogram has not been reported. We present the case of a 70-year-old man who received inappropriate ICD shocks due to hyperkalemia-induced T-wave oversensing. The T-wave amplitudes on both the ICD electrogram and 12-lead ECG corresponded and normalized after normalization of the potassium level.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-08
      DOI: 10.1016/j.joa.2015.04.007
  • The impact of yoga on atrial fibrillation: A review of The Yoga My Heart
    • Authors: Steven Brent Deutsch; Eric Lawrence Krivitsky
      Abstract: Atrial fibrillation is a common arrhythmia affecting thousands of individuals worldwide. It is a conduction disorder that causes the heart to beat irregularly and rapidly. There are a few medical approaches to manage this costly health care burden: antiarrhythmics to maintain normal sinus rhythm, beta blockers to achieve rate control while allowing atrial fibrillation to persist, and electro-physiologic intervention for rate and rhythm control. These treatments can be costly and are not without side effects.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-05
      DOI: 10.1016/j.joa.2015.05.001
  • A case of dual atrioventricular nodal nonreentrant tachycardia: An unusual
           cause of tachycardia-induced cardiomyopathy
    • Authors: Mohammad Ali Akbarzadeh; Amir Farjam Fazelifar, Negar Bahrololoumi Bafruee
      Abstract: We report on a 45-year-old female who developed cardiomyopathy due to incessant dual atrioventricular nodal nonreentrant tachycardia. Her condition was completely resolved by performing radiofrequency ablation of the slow pathway.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-06-01
      DOI: 10.1016/j.joa.2015.04.008
  • Clinical presentation and course of long QT syndrome in Thai children
    • Authors: Ankavipar Saprungruang; Kanyalak Vithessonthi, Vidhavas La-orkhun, Pornthep Lertsapcharoen, Apichai Khongphatthanayothin
      Abstract: Congenital long QT syndrome (LQTS) is a genetically transmitted cardiac channelopathy that can lead to lethal arrhythmia and sudden cardiac death in healthy young people. The clinical characteristics of LQTS are variable and depend on the subtype of long QT syndrome, which differ among populations. This single hospital-based case review study examined the clinical presentation of long QT syndrome and the outcomes of its treatment in 20 Thai children at King Chulalongkorn Memorial Hospital in Bangkok, Thailand.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-28
      DOI: 10.1016/j.joa.2015.03.009
  • Recurrent syncope in two patients with a sigmoid-shaped interventricular
           septum and no left ventricular hypertrophy
    • Authors: Yoshiaki Yamaguchi; Koichi Mizumaki, Jotaro Iwamoto, Kunihiro Nishida, Tamotsu Sakamoto, Yosuke Nakatani, Naoya Kataoka, Hiroshi Inoue
      Abstract: Sigmoid-shaped interventricular septum (SIS) is not uncommon in elderly patients and is considered a normal part of the aging process. However, several patients have been reported to have clinical symptoms due to the narrowing of the left ventricular outflow tract (LVOT). Two patients with SIS presented with recurrent episodes of syncope after drinking or taking sublingual nitroglycerin (NG). In both patients, a head-up tilt test involving provocation with alcohol, NG, or isoproterenol induced the vasovagal reflex along with an increase in the pressure gradient between the apex and LVOT.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-28
      DOI: 10.1016/j.joa.2015.04.006
  • A case of extensive encircling pulmonary vein isolation in a patient with
           severe scoliosis
    • Authors: Takahiro Kamihara; Shinji Kaneko, Masaya Fujita, Kazutoshi Yamaguchi, Shingo Narita, Tomoaki Haga, Daisuke Hayashi, Taiki Ohashi, Ryuji Kubota, Masanori Shinoda
      Abstract: The patient was a 62-year-old man with atrial fibrillation and severe scoliosis. Scoliosis may impair cardiorespiratory function. Enhanced computed tomography (CT) was helpful for the Brockenbrough method. Three-dimensional (3D) mapping also demonstrated clockwise rotation of the heart. We successfully isolated extensive encircling pulmonary vein in this patient using enhanced CT and 3D mapping. The CT venous images revealed appropriate localization of the vein and heart. CT and 3D mapping may ensure a more stable and safer procedure.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-21
      DOI: 10.1016/j.joa.2015.04.005
  • Persistence of non-vitamin K antagonist oral anticoagulant use in Japanese
           patients with atrial fibrillation: A single-center observational study
    • Authors: Tsuyoshi Shiga; Miyoko Naganuma, Takehiko Nagao, Kenji Maruyama, Atsushi Suzuki, Kagari Murasaki, Nobuhisa Hagiwara
      Abstract: Non-vitamin K antagonist oral anticoagulants (NOACs) show a favorable balance between efficacy and safety compared with warfarin for patients with non-valvular atrial fibrillation (NVAF). In “real-world” practice, however, NOAC adherence and persistence among patients are not clear. The aim of this study is to evaluate NOAC and warfarin persistence in Japanese patients with NVAF who newly started these drugs.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-18
      DOI: 10.1016/j.joa.2015.04.004
  • Comparison of the effects of bepridil and aprindine for the prevention of
           atrial fibrillation after cardiac and aortic surgery: A prospective
           randomized study
    • Authors: Mahito Ozawa; Takashi Komatsu, Yoshihiro Sato, Fusanori Kunugita, Hideaki Tachibana, Atsushi Tashiro, Hitoshi Okabayashi, Motoyuki Nakamura
      Abstract: Approximately one-third of the patients undergoing cardiovascular surgery reportedly experience paroxysmal atrial fibrillation (AF) during the postoperative period. However, the usefulness of antiarrhythmic drugs for preventing postoperative AF recurrence in the Japanese population has not been extensively studied.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-16
      DOI: 10.1016/j.joa.2015.04.003
  • Permanent cardiac pacing in a patient with persistent left superior vena
           cava and concomitant agenesis of the right-sided superior vena cava
    • Authors: M. Hassine; S. Hamdi, G. Chniti, M. Boussaada, N. Bouchehda, M. Mahjoub, K. Ben Hamda, F. Betbout, F. Maatouk, H. Gamra
      Abstract: Persistent left superior vena cava (PLSVC) can be incidentally detected during pacemaker implantation from the left pectoral side. Optimal site pacing is technically difficult, and lead stability of the right ventricle (RV) can lead to such a situation. We describe a case of successful single-chamber pacemaker implantation in a 76-year-old woman with a PLSVC and concomitant agenesis of the right-sided superior vena cava, after failed attempts with the conventional procedure. The pacemaker had been working well after 12 months of follow-up.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-15
      DOI: 10.1016/j.joa.2015.03.008
  • Usefulness of the wearable cardioverter defibrillator in patients in the
           early post-myocardial infarction phase with high risk of sudden cardiac
           death: A single-center European experience
    • Abstract: The effectiveness of the wearable cardioverter defibrillator (WCD) therapy in early post-myocardial infarction (MI) patients remains uncertain.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-14
      DOI: 10.1016/j.joa.2015.03.007
  • Usefulness of brain natriuretic peptide for predicting left atrial
           appendage thrombus in patients with unanticoagulated nonvalvular
           persistent atrial fibrillation
    • Authors: Yusuke Ochiumi; Eisuke Kagawa, Masaya Kato, Shota Sasaki, Yoshinori Nakano, Kiho Itakura, Yu Takiguchi, Shuntaro Ikeda, Keigo Dote
      Abstract: The CHADS2 scoring system is simple and widely accepted for predicting thromboembolism in patients with nonvalvular atrial fibrillation (NVAF). Although congestive heart failure (CHF) is a component of the CHADS2 score, the definition of CHF remains unclear. We previously reported that the presence of CHF was a strong predictor of left atrial appendage (LAA) thrombus. Therefore, the present study aimed to elucidate the relationship between LAA thrombus and the brain natriuretic peptide (BNP) level in patients with unanticoagulated NVAF.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-05-13
      DOI: 10.1016/j.joa.2015.04.002
  • Topographic variability of the left atrium and pulmonary veins assessed by
           3D-CT predicts the recurrence of atrial fibrillation after catheter
    • Authors: Kunihiko Kiuchi; Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Ken-ichi Hirata, Gaku Kanda, Katsunori Okajima, Akira Shimane, Shinichiro Yamada, Yasuyo Taniguchi, Yoshinori Yasaka, Hiroya Kawai
      Abstract: Catheter ablation (CA) is an established therapy for atrial fibrillation (AF). However, the assessment of anatomical information and predictors of AF recurrence remain unclear. We investigated the relationship between anatomical information on the left atrium (LA) and pulmonary veins (PVs) from three-dimensional computed tomography images and the recurrence of AF after CA.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-04-25
      DOI: 10.1016/j.joa.2015.03.006
  • Ablation of an atriofascicular accessory pathway with a zero-fluoroscopy
    • Authors: Riccardo Proietti; Sylvia Abadir, Martin L. Bernier, Vidal Essebag
      Abstract: A 16-year-old patient with recurrent palpitations and documented left bundle branch block superior axis wide complex tachycardia underwent an electrophysiological study and ablation with a zero-fluoroscopy procedure. The electrophysiological study showed a decremental antegrade conducting atriofascicular pathway. Three-dimensional CARTO-guided mapping of the tricuspid annulus in sinus rhythm was performed, and a distinct signal corresponding to the accessory pathway potential of the atriofascicular pathway was found in the posterolateral region.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-04-22
      DOI: 10.1016/j.joa.2015.03.005
  • A case of paroxysmal atrial fibrillation with a non-pulmonary vein trigger
           identified by intravenous adenosine triphosphate infusion
    • Authors: Masahiro Esato; Naoto Nishina, Yoshitomi Kida, YeongHwa Chun
      Abstract: A 54-year-old woman was referred to our institution with frequent chest discomfort and was diagnosed with drug-refractory paroxysmal atrial fibrillation. Radiofrequency catheter ablation (RFCA) was performed using a three-dimensional electroanatomic mapping system. After completion of left and right circumferential pulmonary vein isolation (CPVI), an intravenous bolus of adenosine triphosphate (ATP, 20mg) was administered to evaluate the electric reconduction between the pulmonary vein (PV) and left atrium (LA).
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-04-21
      DOI: 10.1016/j.joa.2015.03.004
  • Reduced systemic vascular resistance Is the underlying hemodynamic
           mechanism in nitrate-stimulated vasovagal syncope during head-up
           tilt-table test
    • Authors: Byung Gyu Kim; Sung Woo Cho, Hye Young Lee, Deok Hee Kim, Young Sup Byun, Choong Won Goh, Kun Joo Rhee, Byung Ok Kim
      Abstract: Nitroglycerin (NTG) challenge during head-up tilt-table testing (HUTT) is often utilized to determine the etiology of unexplained vascular syncope. However, conflicting results concerning nitrate-induced hemodynamic changes during HUTT have been reported. The purpose of this study was to assess the determinants of presyncopal symptoms during NTG-stimulated HUTT.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-04-16
      DOI: 10.1016/j.joa.2014.11.008
  • Prevention of immediate recurrence of atrial fibrillation with low-dose
           landiolol after radiofrequency catheter ablation
    • Authors: Daisuke Ishigaki; Takanori Arimoto, Tadateru Iwayama, Naoaki Hashimoto, Daisuke Kutsuzawa, Yu Kumagai, Satoshi Nishiyama, Hiroki Takahashi, Tetsuro Shishido, Takuya Miyamoto, Tetsu Watanabe, Isao Kubota
      Abstract: Immediate recurrence of atrial fibrillation (AF) after radiofrequency (RF) catheter ablation is commonly observed within 3d after the procedure. The mechanism and pharmacological management of immediate AF recurrence remain unclear.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-04-04
      DOI: 10.1016/j.joa.2015.02.003
  • Q wave and ST segment elevation in inferior leads: What is the
    • Authors: Morteza Safi; Isa Khaheshi, Mehdi Memaryan, Mohammad Ali Akbarzadeh
      Abstract: A 78-year-old obese woman consulted our cardiology department immediately after open cholecystectomy because of substernal and epigastric pain radiating to the back, accompanied by nausea and vomiting.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-04-01
      DOI: 10.1016/j.joa.2015.03.001
  • Coved-type ST-elevation during ablation of ischemic ventricular
    • Authors: Yuichi Hori; Shiro Nakahara, Naofumi Tsukada, Ayako Nakagawa, Akiko Hayashi, Takaaki Komatsu, Sayuki Kobayashi, Yoshihiko Sakai, Isao Taguchi
      Abstract: A coved-type electrocardiogram (ECG) change in Brugada syndrome is suggested to be the result of abnormally delayed depolarization over the right ventricular outflow tract; however, ischemia of the conus branch of the right coronary artery presents the same ECG change. A 63-year-old man with a history of myocardial infarction demonstrated a transient coved-type ECG change during catheter ablation of ventricular tachycardia. The ECG change appeared during left ventricular mapping without any chest symptoms, and recovered spontaneously.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-03-24
      DOI: 10.1016/j.joa.2015.02.001
  • Pace mapping in the atrium using bipolar electrograms from widely spaced
    • Authors: Raja J. Selvaraj; Sreekanth Yerram, Pradeep Kumar, Santhosh Satheesh, Ajith Ananthakrishna Pillai, Mahesh Kumar Saktheeswaran, Jayaraman Balachander
      Abstract: Pace mapping is a useful tool but is of limited utility for the atrium because of poor spatial resolution. We investigated the use of bipolar electrograms recorded from widely spaced electrodes in order to improve the resolution of pace mapping.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-03-22
      DOI: 10.1016/j.joa.2015.02.002
  • Sudden manifestation of sinus arrest nine months after catheter ablation
           treatment for persistent atrial fibrillation
    • Authors: Masateru Takigawa; Taishi Kuwahara, Kenji Okubo, Atsushi Takahashi
      Abstract: A 39-year-old man with a seemingly non-remodeled, small heart suffered persistent atrial fibrillation (AF). Extensive isolation of the pulmonary vein, superior vena cava, and posterior left atrium, in conjunction with right atrium focal ablation, was performed to ablate multiple AF foci during two catheter ablation sessions. Sinus arrest occurred suddenly during follow-up, despite the absence of recurrent AF, ultimately necessitating pacemaker implantation. This case underscores the necessity of careful follow-up after catheter ablation, highlighting the risk of sudden, severe sinus node dysfunction, even in young AF patients with small hearts.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-03-19
      DOI: 10.1016/j.joa.2014.11.007
  • Seasonal, weekly, and circadian distribution of ventricular fibrillation
           in patients with J-wave syndrome from the J-PREVENT registry
    • Authors: Shingo Maeda; Yoshihide Takahashi, Akihiko Nogami, Yasuteru Yamauchi, Yuki Osaka, Yasuhiro Shirai, Kensuke Ihara, Yasuhiro Yokoyama, Makoto Suzuki, Kaoru Okishige, Mitsuhiro Nishizaki, Kenzo Hirao
      Abstract: Ventricular fibrillation (VF) in Brugada syndrome (BrS) is known to occur more frequently during nighttime and from spring to early summer. In this study, we investigated whether early repolarization syndrome (ERS) has the same seasonal, weekly, and circadian distribution of VF events as BrS using data from the “J-wave associated with prior cardiac event” (J-PREVENT) registry.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-03-17
      DOI: 10.1016/j.joa.2015.01.004
  • Right coronary artery perforation by an active-fixation atrial pacing lead
           resulting in life-threatening tamponade
    • Authors: Eiichiro Nakagawa; Yukio Abe, Ryushi Komatsu, Takahiko Naruko, Akira Itoh
      Abstract: Cardiac tamponade resulting from perforation of a cardiac chamber is a relatively rare complication of pacemaker implantation. We report the first case of perforation of the right coronary artery related to the implantation of a screw-in atrial pacing lead, presenting as life-threatening cardiac tamponade.We report the case of a 72-year-old woman with complete atrioventricular block and dyspnea on exertion. A permanent pacemaker was implanted with bipolar Medtronic active-fixation leads positioned in the right atrial appendage and at the right ventricular basal septum without any difficulty.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-03-17
      DOI: 10.1016/j.joa.2015.01.002
  • Left atrial thrombus formation and resolution during dabigatran therapy: A
           Japanese Heart Rhythm Society report
    • Authors: Hideo Mitamura; Takayuki Nagai, Atsuyuki Watanabe, Seiji Takatsuki, Ken Okumura
      Abstract: Protocols on the use of novel oral anticoagulants for stroke prevention in patients with atrial fibrillation (AF) undergoing electrical cardioversion (ECV) are lacking.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-03-04
      DOI: 10.1016/j.joa.2014.12.010
  • Electrophysiological and anatomical background of the fusion configuration
           of diastolic and presystolic Purkinje potentials in patients with
           verapamil-sensitive idiopathic left ventricular tachycardia
    • Authors: Hiroshi Taniguchi; Yoshinori Kobayashi, Mitsunori Maruyama, Norishige Morita, Meiso Hayashi, Yasushi Miyauchi, Wataru Shimizu
      Abstract: It is unclear whether false tendons (FTs) are a substantial part of the reentry circuit of verapamil-sensitive idiopathic left ventricular tachycardia (ILVT). This study aimed to prove the association between FTs and the slow conduction zone by evaluating the electro-anatomical relationship between the so-called diastolic Purkinje (Pd) potentials and FTs using an electro-anatomical mapping (EAM) system (CARTO).
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-24
      DOI: 10.1016/j.joa.2015.01.003
  • Usefulness of a wearable cardioverter defibrillator combined with catheter
           ablation for ventricular tachyarrhythmia storms after a myocardial
           infarction: A case report
    • Authors: Yusuke Yoshikawa; Kazuaki Kaitani, Naoaki Onishi, Toshihiro Tamura, Chisato Izumi, Yoshihisa Nakagawa
      Abstract: We report a case of a 60-year-old man with recurrent poly- and monomorphic ventricular tachycardia related to a recent myocardial infarction. Due to drug-refractory ventricular tachycardia despite complete revascularization, he underwent catheter ablation. Afterwards, he was fitted with a wearable cardioverter defibrillator. Three months later, no ventricular tachycardia had been recorded and an electrophysiologic study failed to induce an episode. Thus, wearable cardioverter defibrillators are useful bridging devices pending a final decision to implant a cardioverter defibrillator.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-16
      DOI: 10.1016/j.joa.2014.12.009
  • Inappropriate mode switching clarified by using a chest radiograph
    • Authors: Brian Marino; Abhishek Jaiswal, Seth Goldbarg
      Abstract: An 80-year-old woman with a history of paroxysmal atrial fibrillation and atrioventricular node disease status post-dual chamber pacemaker placement was noted to have abnormal pacing episodes during a percutaneous coronary intervention. Pacemaker interrogation revealed a high number of short duration mode switching episodes. Representative electrograms demonstrated high frequency nonphysiologic recordings predominantly in the atrial lead. Intrinsic pacemaker malfunction was excluded. A chest radiograph showed excess atrial and ventricular lead slack in the right ventricular inflow.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-13
      DOI: 10.1016/j.joa.2015.01.001
  • The effectiveness of cardiac resynchronization therapy for patients with
           New York Heart Association class IV non-ambulatory heart failure
    • Authors: Soichiro Yamashita; Koji Fukuzawa, Akihiro Yoshida, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Akinori Matsumoto, Gaku Kanda, Kunihiko Kiuchi, Akira Shimane, Katsunori Okajima, Hidekazu Tanaka, Ken-ichi Hirata
      Abstract: We reviewed the effectiveness and safety of cardiac resynchronization therapy (CRT) for patients with New York Heart Association (NYHA) class IV non-ambulatory heart failure (NAHF).
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-13
      DOI: 10.1016/j.joa.2014.12.008
  • Coexistence of persistent left superior vena cava with common inferior
           pulmonary vein in a patient with atrial fibrillation
    • Authors: Kunihiko Kiuchi; Katsunori Okajima, Yu Takahashi, Kiminobu Yokoi, Akira Shimane
      Abstract: Coexistence of a persistent left superior vena cava (PLSVC) with a common inferior pulmonary vein (CIPV) is very rare. The electrical assessment of those thoracic veins was performed during the atrial fibrillation ablation.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-11
      DOI: 10.1016/j.joa.2014.12.007
  • Increased defibrillator therapies during influenza season in patients
           without influenza vaccines
    • Authors: Sheldon M. Singh; Russell J. de Souza, Ramanan Kumareswaran
      Abstract: The association between influenza vaccination and implantable cardiac defibrillator (ICD) therapies during influenza season is not known and is described in this study. Understanding this association is important since reduction in ICD therapies during influenza season via use of influenza vaccination would benefit patients physically and psychologically.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-03
      DOI: 10.1016/j.joa.2014.12.006
  • Ventricular bigeminy in acute organophorous poisoning – A rare ECG
    • Authors: Bharati Taksande; Bhawik Dhirawani
      Abstract: India being a land of farmer, the pesticides are freely and easily available and therefore organophosphorous poisoning is one of the major health issues. Suicidal poisoning is more common than accidental poisoning. Cardiac manifestations of organophosphorous poisoning are well known. It results in various electrocardiographic changes from sinus tachycardia to ST elevation. We hereby present a rare ECG finding of ventricular bigeminy in a case of acute organophosphorous poisoning.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-02-02
      DOI: 10.1016/j.joa.2014.12.004
  • Prevalence and associated factors of early repolarization pattern in
           healthy young northeastern Thai men: A correlation study with Brugada
    • Authors: Pattarapong Makarawate; Narumol Chaosuwannakit, Yossavadee Ruamcharoen, Aunejit Panthongviriyakul, Choowong Pongchaiyakul, Prapapan Tharaksa, Temsiri Sripo, Kittisak Sawanyawisuth
      Abstract: Early repolarization pattern (ERP) is characterized by J-point elevation with QRS notching or slurring in the terminal portion of the QRS complex. It may be associated with sudden death. Brugada syndrome (BS) is a genetic and fatal disease commonly found in northeastern Thai men. Data on the rate and predictors of ERP in Asian populations are limited. In addition, the correlation between ERP and BS has never been studied in an endemic area of BS. This study aimed to evaluate the prevalence of ERP and its associated factors in young, healthy male Asian subjects.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-01-29
      DOI: 10.1016/j.joa.2014.12.005
  • Successful transjugular extraction of a lead in front of the anterior
           scalene muscle by using snare technique
    • Authors: Ayako Okada; Kazunori Aizawa, Takeshi Tomita, Kouji Yoshie, Takahiro Takeuchi, Morio Shoda, Uichi Ikeda
      Abstract: The incidence of cardiovascular implantable electronic device infection is increasing. We report a case of and successful device removal in a 79-year-old man with implantable cardioverter-defibrillator infection. Right phrenic nerve paralysis was evident on chest radiography. The lead was in front of the anterior scalene muscle, close to the left phrenic nerve. Therefore, extraction carried a risk of bilateral phrenic nerve paralysis. The lead was successfully extracted from the right internal jugular vein by using the snare technique.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-01-17
      DOI: 10.1016/j.joa.2014.12.002
  • Feasibility and accuracy of a new mobile electrocardiography device,
           ER-2000, in the diagnosis of arrhythmia
    • Authors: Yae Min Park; Dae In Lee, Hwan Cheol Park, Jaemin Shim, Jong-Il Choi, Hong Euy Lim, Sang Weon Park, Young-Hoon Kim
      Abstract: We performed this study to evaluate the feasibility and accuracy of a new mobile electrocardiography (ECG) device, ER-2000®, in detecting cardiac arrhythmia, by comparing it to a 12-lead ECG used as the gold standard.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-01-13
      DOI: 10.1016/j.joa.2014.12.003
  • Dramatic improvement of refractory anemia caused by mechanical hemolysis
           in a patient with hypertrophic obstructive cardiomyopathy using
           dual-chamber pacing
    • Authors: Yosuke Miwa; Kyoko Soejima, Toshiaki Sato, Kenichi Matsushita, Junsuke Sueoka, Nobuyuki Takayama, Hideaki Yoshino
      Abstract: A 59-year-old woman with hypertrophic obstructive cardiomyopathy was admitted to our institution with worsening heart failure. She developed mechanical intracardiac hemolysis due to left ventricular outflow tract (LVOT) obstruction. Despite surgical myectomy, the LVOT pressure gradient (PG) remained high and hemolytic anemia recurred. A dual-chamber implantable cardioverter defibrillator was then implanted, which decreased the LVOT-PG and improved hemolysis.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-01-02
      DOI: 10.1016/j.joa.2014.12.001
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