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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  [2801 journals]
  • Impact of transesophageal echocardiography during transseptal puncture on
           atrial fibrillation ablation
    • Abstract: The aim of our study was to demonstrate the added value of routine transesophageal echocardiography (TEE) for correctly positioning the transseptal system in the fossa ovalis (FO), thus potentially preventing complications during fluoroscopy-guided transseptal puncture (TP), and for assessing the optimal puncture site within the FO according to the expected procedure type.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-28
      DOI: 10.1016/j.joa.2015.12.005
  • Molecular pathogenesis of long QT syndrome type 1
    • Authors: Jie Wu; Wei-Guang Ding, Minoru Horie
      Abstract: Long QT syndrome type 1 (LQT1) is a subtype of a congenital cardiac syndrome caused by mutation in the KCNQ1 gene, which encodes the α-subunit of the slow component of delayed rectifier K+ current (IKs) channel. Arrhythmias in LQT1 are characterized by prolongation of the QT interval on ECG, as well as the occurrence of life-threatening cardiac events, frequently triggered by adrenergic stimuli (e.g., physical or emotional stress). During the past two decades, much advancement has been made in understanding the molecular pathogenesis underlying LQT1.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-27
      DOI: 10.1016/j.joa.2015.12.006
  • Home monitoring report from a single lead Lumax DX implantable
           cardioverter defibrillator: New observations in a new system
    • Authors: Yuval Konstantino; Alex Kleiman, Guy Amit
      Abstract: A 56-year-old man underwent a single lead Lumax 640 DX implantable cardioverter defibrillator implantation for primary prevention of sudden cardiac death. A DX system consists of a single lead, which provides atrial as well as ventricular electrograms, and enhances atrial arrhythmia detection. Three months after the implantation, high-frequency episodes were detected on the far field and the atrial channels, but not on the bipolar right ventricular channel; these were classified as atrial tachycardia.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-25
      DOI: 10.1016/j.joa.2015.12.004
  • Molecular pathogenesis of long QT syndrome type 2
    • Authors: Jennifer L. Smith; Corey L. Anderson, Don E. Burgess, Claude S. Elayi, Craig T. January, Brian P. Delisle
      Abstract: The molecular mechanisms underlying congenital long QT syndrome (LQTS) are now beginning to be understood. New insights into the etiology and therapeutic strategies are emerging from heterologous expression studies of LQTS-linked mutant proteins, as well as inducible pluripotent stem cell derived cardiomyocytes (iPSC-CMs) from LQTS patients. This review focuses on the major molecular mechanism that underlies LQTS type 2 (LQT2). LQT2 is caused by loss of function (LOF) mutations in KCNH2 (also known as the human Ether-à-go-go-Related Gene or hERG).
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-22
      DOI: 10.1016/j.joa.2015.11.009
  • Letter to the Editor: Marino et al. Inappropriate mode switching clarified
           by using a chest radiograph
    • Authors: Mohammad Ali Akbarzadeh
      Abstract: To the Editor,
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-19
      DOI: 10.1016/j.joa.2015.12.002
  • Management of antithrombotic therapy during cardiac implantable device
    • Authors: Ahmed AlTurki; Riccardo Proietti, David H. Birnie, Vidal Essebag
      Abstract: Anticoagulants are commonly used drugs that are frequently encountered during device placement. Deciding when to halt or continue the use of anticoagulants is a balance between the risks of thromboembolism versus bleeding. Patients taking warfarin with a high risk of thromboembolism should continue to take their warfarin without interruption during device placement while ensuring their international normalized ratio remains below 3. For patients who are taking warfarin and have low risk of thromboembolism, either interrupted or continued warfarin may be used, with no evidence to clearly support either strategy.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-18
      DOI: 10.1016/j.joa.2015.12.003
  • Post-marketing surveillance on the long-term use of dabigatran in Japanese
           patients with nonvalvular atrial fibrillation: Preliminary report of the
           J-dabigatran surveillance
    • Authors: Hiroshi Inoue; Shinichiro Uchiyama, Hirotsugu Atarashi, Ken Okumura, Yukihiro Koretsune, Masahiro Yasaka, Takeshi Yamashita, Makiko Ohnishi, Nobutaka Yagi, Taku Fukaya, for the J-Dabigatran Surveillance Investigators
      Abstract: A post-marketing surveillance (PMS) study is being conducted to investigate the safety and effectiveness of the long-term use of dabigatran etexilate (dabigatran) in Japanese patients with nonvalvular atrial fibrillation (NVAF). Results of an interim analysis of this prospective cohort study including patient characteristics and adverse drug reactions (ADRs) collected up to September 17, 2014 are reported here.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-16
      DOI: 10.1016/j.joa.2015.11.008
  • Usefulness of combined CARTO electroanatomical mapping and manifest
           entrainment in ablating adenosine triphosphate-sensitive atrial
           tachycardia originating from the atrioventricular node vicinity
    • Authors: Ken Okumura; Shingo Sasaki, Masaomi Kimura, Daisuke Horiuchi, Kenichi Sasaki, Taihei Itoh, Hirofumi Tomita, Yuji Ishida, Takahiko Kinjo
      Abstract: By using a noncontact mapping system, adenosine triphosphate (ATP)-sensitive atrial tachycardia (ATP-AT) originating from the atrioventricular (AV) node vicinity was successfully ablated at the entrance to the slow conduction zone indicated by the manifest entrainment technique. We aimed to prospectively validate the efficacy of the combination of CARTO electroanatomical mapping and manifest entrainment in ablating this ATP-AT.
      Citation: Journal of Arrhythmia (2016)
      PubDate: 2016-01-13
      DOI: 10.1016/j.joa.2015.11.004
  • Editorial Board
    • Citation: Journal of Arrhythmia 31, 6 (2015)
      PubDate: 2015-12
      DOI: 10.1016/S1880-4276(15)00148-9
      Issue No: Vol. 31, No. 6 (2015)
  • Mechanisms of cardiac arrhythmias
    • Authors: Gary Tse
      Abstract: Blood circulation is the result of the beating of the heart, which provides the mechanical force to pump oxygenated blood to, and deoxygenated blood away from, the peripheral tissues. This depends critically on the preceding electrical activation. Disruptions in the orderly pattern of this propagating cardiac excitation wave can lead to arrhythmias. Understanding of the mechanisms underlying their generation and maintenance requires knowledge of the ionic contributions to the cardiac action potential, which is discussed in the first part of this review.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-12-16
      DOI: 10.1016/j.joa.2015.11.003
  • Electrophysiological validation of total atrial conduction time
           measurement by tissue doppler echocardiography according to age and sex in
           healthy adults
    • Abstract: We sought to validate total atrial conduction time (TACT) measurement via tissue Doppler imaging (TDI) by comparing the electrophysiological study (EPS) measurements of healthy subjects, according to age and sex.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-12-14
      DOI: 10.1016/j.joa.2015.11.006
  • Outcomes of single- or dual-chamber implantable cardioverter defibrillator
           systems in Japanese patients
    • Authors: Akiko Ueda; Yasushi Oginosawa, Kyoko Soejima, Haruhiko Abe, Ritsuko Kohno, Hisaharu Ohe, Yuichi Momose, Mika Nagaoka, Noriko Matsushita, Kyoko Hoshida, Yosuke Miwa, Mutsumi Miyakoshi, Ikuko Togashi, Akiko Maeda, Toshiaki Sato, Hideaki Yoshino
      Abstract: There are no criteria for selecting single- or dual-chamber implantable cardioverter defibrillators (ICDs) in patients without a pacing indication. Recent reports showed no benefit of the dual-chamber system despite its preference in the United States. As data on ICD selection and respective outcomes in Japanese patients are scarce, we investigated trends regarding single- and dual-chamber ICD usage in Japan.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-12-10
      DOI: 10.1016/j.joa.2015.09.007
  • Differential diagnostic dilemma between pulmonary embolism and acute
           coronary syndrome
    • Authors: Enes Elvin Gul; Kjell C. Nikus, Halil I. Erdogan, Kurtulus Ozdemir
      Abstract: Acute pulmonary embolism (PE) is a frequent life-threatening condition in emergency departments. Careful diagnosis is important, and different diagnostic tests such as electrocardiogram (ECG), biochemical markers, echocardiogram, and computed tomography are required. Although ECG is a cheap and rapid diagnostic test for pulmonary embolism, it has some limitations in the differential diagnosis of acute coronary syndrome and acute PE. Herein, we report ECG results of a patient diagnosed with acute PE mimicking acute coronary syndrome.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-12-09
  • Combined catheter ablation for atrial fibrillation and Watchman® left
           atrial appendage occlusion procedures: Five-year experience
    • Authors: Karen P. Phillips; Daniel T. Walker, Julie A. Humphries
      Abstract: Patients with atrial fibrillation (AF) may benefit from undergoing concomitant interventions of left atrial catheter ablation and device occlusion of the left atrial appendage (LAA) as a two-pronged strategy for rhythm control and stroke prevention. We report on the outcome of combined procedures in a single center case series over a 5-year timeframe.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-12-08
      DOI: 10.1016/j.joa.2015.11.001
  • An overlap of Brugada syndrome and arrhythmogenic right ventricular
    • Authors: Shohei Kataoka; Naoki Serizawa, Kazutaka Kitamura, Atsushi Suzuki, Tsuyoshi Suzuki, Tsuyoshi Shiga, Morio Shoda, Nobuhisa Hagiwara
      Abstract: Overlapping characteristics of Brugada syndrome (BrS) and arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) have been reported in recent studies, but little is known about the overlapping disease state of BrS and ARVC/D. A 36-year-old man, hospitalized at our institution for syncope, presented with this overlapping disease state. The electrocardiogram showed spontaneous coved-type ST-segment elevation, and ventricular fibrillation was induced by right ventricular outflow tract stimulation in an electrophysiological study.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-30
  • Usefulness of filtered unipolar electrogram morphology for evaluating
           transmurality of ablated lesions during pulmonary vein isolation
    • Authors: Rikitake Kogawa; Ichiro Watanabe, Yasuo Okumura, Hiroaki Mano, Kazumasa Sonoda, Koichi Nagashima, Naoko Sasaki, Kimie Ohkubo, Keiko Takahashi, Kazuki Iso, Sayaka Kurokawa, Toshiko Nakai, Atsushi Hirayama
      Abstract: Although alteration of the amplitude and morphology of bipolar electrograms is used widely as a guide of the ablation effect, there is little information concerning unipolar electrograms. The amplitude and morphology of filtered bipolar (BP) and filtered unipolar (UP) electrograms were compared during pulmonary vein isolation in patients with atrial fibrillation.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-27
  • Characterization of the novel mutant A78T-HERG from a long QT syndrome
           type 2 patient: Instability of the mutant protein and stabilization by
           heat shock factor 1
    • Authors: Takehito Kondo; Ichiro Hisatome, Shouichi Yoshimura, Endang Mahati, Tomomi Notsu, Peili Li, Kazuhiko Iitsuka, Masaru Kato, Kazuyoshi Ogura, Junichiro Miake, Takeshi Aiba, Wataru Shimizu, Yasutaka Kurata, Shinji Sakata, Naoe Nakasone, Haruaki Ninomiya, Akira Nakai, Katsumi Higaki, Yasushi Kawata, Yasuaki Shirayoshi, Akio Yoshida, Kazuhiro Yamamoto
      Abstract: The human ether-a-go-go-related gene (HERG) encodes the α-subunit of rapidly activating delayed-rectifier potassium channels. Mutations in this gene cause long QT syndrome type 2 (LQT2). In most cases, mutations reduce the stability of the channel protein, which can be restored by heat shock (HS).
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-24
  • Translation and validation of the Malay version of the Stroke Knowledge
    • Authors: Siti Noorkhairina Sowtali; Dariah Mohd Yusoff, Sakinah Harith, Monniaty Mohamed
      Abstract: To date, there is a lack of published studies on assessment tools to evaluate the effectiveness of stroke education programs.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-24
  • Initial experience and treatment of atrial fibrillation using a novel
           irrigated multielectrode catheter: Results from a prospective two-center
    • Abstract: PV electrical isolation has become the cornerstone of catheter ablation for the treatment of atrial fibrillation (AF). Several strategies have been proposed to achieve this goal. The aim of this study was to assess the efficacy and safety of AF ablation using a new circular irrigated multielectrode ablation catheter designed to achieve single-delivery pulmonary vein (PV) isolation.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-24
      DOI: 10.1016/j.joa.2015.09.011
  • Current topics in catecholaminergic polymorphic ventricular tachycardia
    • Authors: Naokata Sumitomo
      Abstract: Catecholaminergic polymorphic ventricular tachycardia (CPVT) is induced by emotions or exercise in patients without organic heart disease and may be polymorphic or bidirectional in nature. The prognosis of CPVT is not good, and therefore prevention of sudden death is of utmost importance. Genetic variants of CPVT include RyR2, CASQ2, CALM2, TRD, and possibly KCNJ2 and ANK2 gene mutations. Hypotheses that suggest the causes of CPVT include weakened binding of FKBP12.6 and RyR2, a store overload-induced Ca2+ release (SOICR), unzipping of intramolecular domain interactions in RyR2, and molecular and functional abnormalities caused by mutations in the CASQ2 gene.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-24
      DOI: 10.1016/j.joa.2015.09.008
  • Successful intraprocedural anticoagulation with bivalirudin during
           pulmonary vein isolation in a patient with known heparin-induced
           thrombocytopenia type II
    • Authors: Barbara Bellmann; Patrick Nagel, Bogdan G. Muntean
      Abstract: We report the case of a 56-year-old female who presented with symptomatic paroxysmal atrial fibrillation. Anamnestic heparin-induced thrombocytopenia (HIT) type II was suspected, and a rapid diagnostic test showed antibodies against platelet factor 4. The heparin-induced platelet activation-assay was negative. Radiofrequency pulmonary vein isolation with intraprocedural anticoagulation using bivalirudin was ultimately performed. Dosing was controlled by monitoring the activated clotting time. Post-procedural blood tests were normal.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-19
  • Influence of primary and secondary prevention indications on anxiety about
           the implantable cardioverter-defibrillator
    • Authors: Anita Rahmawati; Akiko Chishaki, Tomoko Ohkusa, Hiroyuki Sawatari, Miyuki Tsuchihashi-Makaya, Yuko Ohtsuka, Mori Nakai, Mami Miyazono, Nobuko Hashiguchi, Harumizu Sakurada, Masao Takemoto, Yasushi Mukai, Shujirou Inoue, Kenji Sunagawa, Hiroaki Chishaki
      Abstract: Implantable cardioverter-defibrillators (ICDs) have been established for primary and secondary prevention of fatal arrhythmias. However, little is known about the influence of ICD indications on quality of life (QOL) and psychological disturbances. This study aimed to examine whether there were differences in QOL and psychological distress in patients that have an ICD for primary or secondary prevention of fatal arrhythmias.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-19
  • Conservative therapy for the management of cardiac implantable electronic
           device infection
    • Authors: Yukio Sekiguchi
      Abstract: Along with the increased frequency of implantation, the incidence of cardiac implantable electronic device (CIED) infection, which can have serious or fatal complications, has also increased. Although several successful conservative therapies for CIED infection have been reported, retained infected devices remain a source of relapse, which is closely related to a higher mortality rate. Presently, complete hardware removal is initially recommended for infected CIED patients, and indications for conservative therapy, including continuous administration of antibiotics, require careful consideration.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-19
      DOI: 10.1016/j.joa.2015.09.012
  • Molecular autopsy in victims of inherited arrhythmias
    • Authors: Christopher Semsarian; Jodie Ingles
      Abstract: Sudden cardiac death (SCD) is a rare but devastating complication of a number of underlying cardiovascular diseases. While coronary artery disease and acute myocardial infarction are the most common causes of SCD in older populations, inherited cardiac disorders comprise a substantial proportion of SCD cases aged less than 40 years. Inherited cardiac disorders include primary inherited arrhythmogenic disorders such as familial long QT syndrome (LQTS), Brugada syndrome (BrS), catecholaminergic polymorphic ventricular tachycardia (CPVT), and inherited cardiomyopathies, most commonly hypertrophic cardiomyopathy (HCM).
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-19
      DOI: 10.1016/j.joa.2015.09.010
  • Inherited bradyarrhythmia: A diverse genetic background
    • Authors: Taisuke Ishikawa; Yukiomi Tsuji, Naomasa Makita
      Abstract: Bradyarrhythmia is a common heart rhythm abnormality comprising number of diseases and is associated with decreased heart rate due to the failure of action potential generation and propagation at the sinus node. Permanent pacemaker implantation is often used therapeutically to compensate for decreased heart rate and cardiac output. The vast majority of bradyarrhythmia cases are attributable either to aging or to structural abnormalities of the cardiac conduction system, caused by underlying structural heart disease.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-19
      DOI: 10.1016/j.joa.2015.09.009
  • Incidence of cardiac implantable electronic device infections and
           migrations in Japan: Results from a 129 institute survey
    • Authors: Hiroshi Nakajima; Masami Taki
      Abstract: We conducted a survey of the infection burden associated with the implantation of cardiac implantable electronic devices (CIEDs) in Japan.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-04
      DOI: 10.1016/j.joa.2015.09.006
  • Development of an alert system for subjects with paroxysmal atrial
    • Authors: R.A. Thuraisingham
      Abstract: Knowledge of the onset of atrial fibrillation (AF) episodes in patients with paroxysmal atrial fibrillation (PAF) will enable them to better manage this condition. Current advances in mobile technology allow RR interval data to be obtained in real time. An analysis technique using RR interval data is presented with a view to alert a subject before a PAF episode.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-03
      DOI: 10.1016/j.joa.2015.08.006
  • Takotsubo syndrome and polymorphic ventricular tachycardia: The chicken or
           the egg
    • Authors: John E. Madias
      Abstract: To the Editor,
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-03
      DOI: 10.1016/j.joa.2015.09.005
  • Practical applicability of landiolol, an ultra-short-acting
           β1-selective blocker, for rapid atrial and ventricular
           tachyarrhythmias with left ventricular dysfunction
    • Authors: Yuko Wada; Takeshi Aiba, Yasuyuki Tsujita, Hideki Itoh, Mitsuru Wada, Ikutaro Nakajima, Kohei Ishibashi, Hideo Okamura, Koji Miyamoto, Takashi Noda, Yasuo Sugano, Hideaki Kanzaki, Toshihisa Anzai, Kengo Kusano, Satoshi Yasuda, Minoru Horie, Hisao Ogawa
      Abstract: Landiolol effectively controls rapid heart rate in atrial fibrillation or flutter (AF/AFL) patients with left ventricular (LV) dysfunction. However, predicting landiolol Responders and Non-Responders and patients who will experience adverse effects remains a challenge. The aim of this study was to clarify the potential applicability of landiolol for rapid AF/AFL and refractory ventricular tachyarrhythmias (VTs) in patients with heart failure.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-11-02
      DOI: 10.1016/j.joa.2015.09.002
  • Autonomic and cardio-respiratory responses to exercise in Brugada Syndrome
    • Authors: Raoyrin Chanavirut; Pattarapong Makarawate, Ian A. Macdonald, Naruemon Leelayuwat
      Abstract: Imbalances of the autonomic nervous (ANS), the cardiovascular system, and ionics might contribute to the manifestation of The Brugada Syndrome (BrS). Thus, this study has aimed to investigate the cardio-respiratory fitness and the responses of the ANS both at rest and during a sub-maximal exercise stress test, in BrS patients and in gender-matched and age-matched healthy sedentary controls.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-10-29
      DOI: 10.1016/j.joa.2015.09.001
  • A case report of successful permanent pacemaker implantation via the iliac
    • Authors: Tetsuo Yamaguchi; Takamichi Miyamoto, Yasuteru Yamauchi, Tohru Obayashi
      Abstract: An 85-year-old man was referred to our hospital with a pacemaker pocket infection. A permanent pacemaker had been implanted via the right subclavian vein. The pacemaker and pacing leads were removed and a temporary pacemaker was implanted. After vancomycin treatment for 4 weeks, pacemaker implantation via the right external iliac vein was performed under local anesthesia because of left subclavian vein occlusion, infection of the right pocket, and difficulty with epicardial lead insertion. The iliac vein approach is an effective alternative in patients in whom the pectoral approach cannot be used.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-10-29
      DOI: 10.1016/j.joa.2015.08.004
  • Measurement of diffuse ventricular fibrosis with myocardial T1 in patients
           with atrial fibrillation
    • Authors: Jay A. Montgomery; Wissam Abdallah, Zachary T. Yoneda, Evan Brittain, Sam G. Aznaurov, Babar Parvez, Keith Adkins, S. Patrick Whalen, J.C. Estrada, Sharon Shen, George H. Crossley, Arvindh Kanagasundram, Pablo Saavedra, Christopher R. Ellis, Mark Lawson, Dawood Darbar, M. Benjamin Shoemaker
      Abstract: Atrial fibrillation (AF) is associated with cardiac fibrosis, which can now be measured noninvasively using T1-mapping with cardiac magnetic resonance imaging (CMRI). This study aimed to assess the impact of AF on ventricular T1 at the time of CMRI.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-10-29
      DOI: 10.1016/j.joa.2015.08.005
  • Pseudofusion in a dual chamber pacemaker: Is this pacemaker working
    • Authors: Mohammad Ali Akbarzadeh; Abolfath Alizadeh, Negar Bahrololoumi Bafruee
      Abstract: A 57-year-old woman with a history of dizziness due to episodes of complete heart block and bradycardia was referred to the electrophysiology ward for pacemaker implantation. A dual chamber pacemaker (Medtronic, Relia, Medtronic, Minneapolis, USA) was implanted. Its analysis showed normal function (atrial lead capture threshold 0.5V at 0.4ms, ventricular lead capture threshold 0.75V at 0.4ms, and P-wave and R wave amplitude sensing 2mV and 8mV, respectively). The pacemaker was programmed in the DDDR mode with a lower rate limit of 60bpm, atrial and ventricular output of 3.5V and 3.5V at 0.4ms respectively, atrial and ventricular sensitivity of 0.5mV and 2.8mV respectively, a paced atrioventricular interval (pAVI) of 180ms, and a sensed atrioventricular interval of 150ms.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-10-29
      DOI: 10.1016/j.joa.2015.09.003
  • Left cardiac sympathetic denervation: An important treatment option for
           patients with hereditary ventricular arrhythmias
    • Authors: Yongkeun Cho
      Abstract: Medications such as ß-blockers are currently the primary treatment for patients with hereditary arrhythmia syndromes such as long QT syndrome (LQTS) and catecholaminergic polymorphic ventricular tachycardia (CPVT). However, these drugs are ineffective in some patients, and the other treatment option, that is implantable cardioverter defibrillator (ICD) implantation, is associated with significant complications in young and active patients. Left cardiac sympathetic denervation (LCSD) may reduce the wide gap between life-long ß-blocker medication and ICD implantation.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-10-29
      DOI: 10.1016/j.joa.2015.08.002
  • Arrhythmia management after device removal
    • Authors: Nobuhiro Nishii
      Abstract: Arrhythmic management is needed after removal of cardiac implantable electronic devices (CIEDs). Patients completely dependent on CIEDs need temporary device back-up until new CIEDs are implanted. Various methods are available for device back-up, and the appropriate management varies among patients. The duration from CIED removal to implantation of a new CIED also differs among patients. Temporary pacing is needed for patients with bradycardia, a wearable cardioverter defibrillator (WCD) or catheter ablation is needed for patients with tachyarrhythmia, and sequential pacing is needed for patients dependent on cardiac resynchronization therapy.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-10-23
      DOI: 10.1016/j.joa.2015.09.004
  • Effectiveness of Ventricular Intrinsic Preference (VIP™) and
           Ventricular AutoCapture (VAC) algorithms in pacemaker patients: Results of
           the validate study
    • Authors: Rakesh Yadav; Aparna Jaswal, Sridevi Chennapragada, Prakash Kamath, Shirish M.S. Hiremath, Dhiman Kahali, Sumit Anand, Naresh K. Sood, Anil Mishra, Jitendra S. Makkar, Upendra Kaul
      Abstract: Several past clinical studies have demonstrated that frequent and unnecessary right ventricular pacing in patients with sick sinus syndrome and compromised atrio-ventricular conduction (AVC) produces long-term adverse effects. The safety and efficacy of two pacemaker algorithms, Ventricular Intrinsic Preference™ (VIP) and Ventricular AutoCapture (VAC), were evaluated in a multi-center study in pacemaker patients.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-09-29
      DOI: 10.1016/j.joa.2015.07.004
  • An appropriate shock of the wearable cardioverter-defibrillator in an
           outpatient setting
    • Authors: Jun Kishihara; Shinichi Niwano, Hironori Nakamura, Tazuru Igarashi, Naruya Ishizue, Tamami Fujiishi, Jun Oikawa, Masami Murakami, Hidehira Fukaya, Junya Ako
      Abstract: The wearable cardioverter-defibrillator (WCD) represents an alternative clinical approach to prevent sudden cardiac death as a bridge to therapy when making a final decision regarding the need for an implantable cardioverter defibrillator (ICD), especially in patients who are in the so-called gray zone according to ICD guidelines. Although the WCD system was introduced in Japan in April 2014, data regarding its usage and experience are limited. We report the first case of appropriate shock therapy using the WCD in an outpatient setting in Japan.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-09-23
      DOI: 10.1016/j.joa.2015.08.003
  • Impact of esophageal temperature monitoring guided atrial fibrillation
           ablation on preventing asymptomatic excessive transmural injury
    • Authors: Kunihiko Kiuchi; Katsunori Okajima, Akira Shimane, Gaku Kanda, Kiminobu Yokoi, Jin Teranishi, Kousuke Aoki, Misato Chimura, Takayoshi Toba, Shogo Oishi, Takahiro Sawada, Yasue Tsukishiro, Tetsuari Onishi, Seiichi Kobayashi, Yasuyo Taniguchi, Shinichiro Yamada, Yoshinori Yasaka, Hiroya Kawai, Akihiro Yoshida, Koji Fukuzawa, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Ken-ichi Hirata, Hiroshi Tada, Hiro Yamasaki, Yoshihisa Naruse, Miyako Igarashi, Kazutaka Aonuma
      Abstract: Even with the use of a reduced energy setting (20–25W), excessive transmural injury (ETI) following catheter ablation of atrial fibrillation (AF) is reported to develop in 10% of patients. However, the incidence of ETI depends on the pulmonary vein isolation (PVI) method and its esophageal temperature monitor setting. Data comparing the incidence of ETI following AF ablation with and without esophageal temperature monitoring (ETM) are still lacking.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-09-16
      DOI: 10.1016/j.joa.2015.07.003
  • Clinical implication of monitoring rivaroxaban and apixaban by using
           anti-factor Xa assay in patients with non-valvular atrial fibrillation
    • Authors: Kozue Ikeda; Hideaki Tachibana
      Abstract: Although patients taking non-vitamin K antagonist oral anticoagulants (NOACs) do not require routine coagulation monitoring, high-risk patients require monitoring to assess pharmacodynamics.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-09-15
      DOI: 10.1016/j.joa.2015.08.001
  • Efficacy of bilateral thoracoscopic sympathectomy in a patient with
           catecholaminergic polymorphic ventricular tachycardia
    • Authors: Katsunori Okajima; Kunihiko Kiuchi, Kiminobu Yokoi, Jin Teranishi, Kosuke Aoki, Akira Shimane, Yoshihide Nakamura, Motoko Kimura, Yoshio Horikawa, Masato Yoshida, Yoshimasa Maniwa
      Abstract: A 27-year-old woman with frequent implantable cardioverter defibrillator (ICD) shocks related to catecholaminergic polymorphic ventricular tachycardia (VT) experienced aborted sudden death due to incessant polymorphic VT despite the administration of beta-blockers, verapamil, and flecainide. Catheter ablation failed to suppress the polymorphic VT. Based on the temporary efficacy of the local anesthetic administered at the left and right cervical sympathetic nerves to suppress VT under an isoproterenol infusion, stepwise, bilateral thoracoscopic sympathectomy was performed.
      Citation: Journal of Arrhythmia (2015)
      PubDate: 2015-08-29
      DOI: 10.1016/j.joa.2015.07.002
  • 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
  • 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
  • The impact of yoga on atrial fibrillation: A review of The Yoga My Heart
    • Authors: Steven Brent Deutsch; Eric Lawrence Krivitsky
      First page: 337
      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
  • 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
      First page: 339
      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
  • 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
      First page: 345
      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
  • 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
      First page: 352
      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
  • 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
      First page: 359
      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
  • 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
      First page: 364
      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
  • 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
      First page: 371
      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
  • Biphasic P wave in inferior leads and the development of atrial
    • Authors: Hideki Hayashi; Minoru Horie
      First page: 376
      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
  • 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
      First page: 381
      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
  • 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
      First page: 388
      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
  • 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
      First page: 391
      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 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
      First page: 395
      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
  • 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
      First page: 398
      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
  • 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
      First page: 401
      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
  • 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
      First page: 406
      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
  • Kaya et al. Is it a typical crosstalk: Need for re-implantation'
    • Authors: Mohammad Ali Akbarzadeh
      First page: 410
      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
  • Shortness of breath in a patient with complete heart block and permanent
           pacemaker: A case of effective pacemaker reprogramming
    • Authors: Sandeep Arora
      First page: 411
      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
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