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Journal of Arrhythmia
   Full-text available via subscription Subscription journal
     ISSN (Print) 1880-4276 - ISSN (Online) 1883-2148
     Published by Elsevier Homepage  [2575 journals]   [H-I: 1]
  • Editorial Board
    • Pages: iii - iv
      Citation: Journal of Arrhythmia 30, 6 (2014)
      PubDate: 2014-12
      DOI: 10.1016/S1880-4276(14)00173-2
      Issue No: Vol. 30, No. 6 (2014)
  • Right-sided infective endocarditis as a potentially fatal complication in
           patients with long-term refractory severe bradyarrhythmia after cervical
           spinal cord injury: A case report
    • Authors: Naoki Miura; Hideaki Suzuki, Shota Maesawa, Tomoaki Koakutsu, Yasuharu Matsumoto, Koji Fukuda, Yutaka Kagaya, Shigeki Kushimoto, Hiroaki Shimokawa
      Abstract: Bradyarrhythmia is usually a spontaneously subsiding complication of cervical spinal cord injury. However, in severe cases, it can lead to cardiac arrest. We report a case of cervical spinal cord injury, complicated by right-sided infective endocarditis after the placement of a temporary pacing catheter in the right ventricle for severe bradyarrhythmia that led to cardiac arrest. Although the patient׳s condition was successfully treated by pacing catheter removal and pharmacological therapy, right-sided infective endocarditis would be a fatal complication in cases of cervical spinal cord injury where cardiac pacing is required for long-term refractory severe bradyarrhythmia.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-12-06
      DOI: 10.1016/j.joa.2014.11.002
  • Fabry cardiomyopathy presenting with a high defibrillation threshold: A
           short case report
    • Authors: Takashi Kanda; Masaharu Masuda, Akihiro Sunaga, Masashi Fujita, Osamu Iida, Shin Okamoto, Takayuki Ishihara, Kiyonori Nanto, Tatsuya Shiraki, Fusako Sera, Masaaki Uematsu
      Abstract: Fabry disease is an X-linked recessive glycosphingolipid storage disorder caused by a deficiency of lysosomal enzyme α-galactosidase A. It is recognized that Fabry disease patients often have ventricular arrhythmias. Although the effectiveness of implantable cardioverter-defibrillator (ICD) therapy in patients with ventricular fibrillation is established, there is little evidence regarding ICD therapy for Fabry disease. Here, we report the case of patient with Fabry disease who was treated with an ICD and presented with high defibrillation thresholds.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-12-02
  • Programmed electrical stimulation for risk stratification of patients with
           ischemic cardiomyopathy
    • Authors: Asaf Danon; Jorge E. Schliamser, Idit Lavi, Arie Militianu
      Abstract: Patients with ischemic cardiomyopathy (ICM) are at an increased risk for sudden death. Although earlier trials used programmed electrical stimulation (PES) for risk stratification, more recent data demonstrate the benefit of implantable cardiac defibrillators (ICDs) in selected patients with reduced left ventricular ejection fraction (LVEF) without performing PES. However, little is known about the outcome of non-inducible patients. The purpose of this study was to evaluate the efficacy of PES for mortality risk stratification in patients with ICM.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-12-01
  • Demonstration of a hidden interaction between the aortomitral continuity
           and the conduction system in a case of idiopathic left ventricular outflow
           tract ventricular tachycardia
    • Authors: Masahiro Mizobuchi; Yoshihisa Enjoji
      Abstract: We describe a case of idiopathic left ventricular outflow ventricular tachycardia. Monomorphic ventricular arrhythmia (VA) with a right bundle branch block morphology and an inferior axis was induced through exercise or isoproterenol infusion. During VA bigeminy, a spiked presystolic potential (PP) preceding the VA with a qrS pattern in the unipolar electrogram was recorded at the aortomitral continuity (AMC). Radiofrequency catheter ablation eliminated the VA despite the persistence of sinus-PP bigeminy.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-11-27
  • We do our work with all our heart
    • Authors: İsmail Ateş; Zeynettin Kaya, Mehmet Doğru
      Abstract: These original images were encountered during interventional procedures. Awareness about the abnormalities that they depict is important to identify them. We present an original image of the coronary sinus lead. The lead was placed in the posterolateral branch of the coronary sinus during cardiac resynchronization therapy combined with implantation of an implantable cardioverter-defibrillator. We observed that the lead achieved a heart shape in the left anterior oblique position (Fig. 1). We would like to dedicate this image to all physicians who are devoted to their work.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-11-27
      DOI: 10.1016/j.joa.2014.11.001
  • Immediate electrical storm of Torsades de Pointes after CRT-D implantation
           in an ischemic cardiomyopathy patient
    • Authors: Adnan Kaya; Aylin Sungur, Ahmet Ilker Tekkesin, Ceyhan Turkkan, Ahmet Taha Alper
      Abstract: Cardiac resynchronization therapy with an implantable cardioverter-defibrillator (CRT-D) is the preferred treatment for patients with severe heart failure, dyssynchrony, and an increased risk of sudden cardiac death or for primary ventricular arrhythmia survivors. Rarely, left ventricular epicardial pacing can induce ventricular tachyarrhythmia rather than a beneficial effect. We describe an ischemic cardiomyopathy patient who underwent CRT-D therapy and developed sustained torsades de pointes (TdP) immediately after switching to biventricular pacing (BVP) mode.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-11-27
  • Visualization of the radiofrequency lesion after pulmonary vein isolation
           using delayed enhancement magnetic resonance imaging fused with magnetic
           resonance angiography
    • Authors: Kunihiko Kiuchi; Katsunori Okajima, Akira Shimane, Kiminobu Yokoi, Jin Teranishi, Kousuke Aoki, Misato Chimura, Hideo Tsubata, Taishi Miyata, Yuuki Matsuoka, Takayoshi Toba, Shogo Ohishi, Takahiro Sawada, Yasue Tsukishiro, Tetsuari Onishi, Seiichi Kobayashi, Shinichiro Yamada, Yasuyo Taniguchi, Yoshinori Yasaka, Hiroya Kawai, Kazushi Ikeuchi, Yutaka Shigenaga, Takayuki Ikeda
      Abstract: The radiofrequency (RF) lesions for atrial fibrillation (AF) ablation can be visualized by delayed enhancement magnetic resonance imaging (DE-MRI). However, the quality of anatomical information provided by DE-MRI is not adequate due to its spatial resolution. In contrast, magnetic resonance angiography (MRA) provides similar information regarding the left atrium (LA) and pulmonary veins (PVs) as computed tomography angiography. We hypothesized that DE-MRI fused with MRA will compensate for the inadequate image quality provided by DE-MRI.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-11-27
  • Frequent neurally mediated reflex syncope in a young patient with
           dextrocardia: Efficacy of catheter ablation of the superior vena
           cava–aorta ganglionated plexus
    • Authors: Hidetaka Suenaga; Masato Murakami, Tomoyuki Tani, Shigeru Saito
      Abstract: Neurally mediated reflex syncope is the most common cause of syncope in young individuals without cardiac or neurological pathology. We report a case of successful catheter ablation in a 17-year-old male with neurally mediated syncope (NMS) of the cardioinhibitory type. The patient had dextrocardia situs inversus totalis with a mirror-image reversal of the thoracic and abdominal organs. Because he experienced multiple syncope episodes despite pharmacological intervention, we performed endocardial ablation of the superior vena cava–aorta ganglionated plexus.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-11-26
  • Usefulness of entrainment mapping using the activation sequence of the
           last captured excitation in complex dual-loop atrial tachycardia
    • Authors: Akira Fujiki; Ryozo Yoshioka, Masao Sakabe
      Abstract: Electroanatomical mapping is useful for locating the atrial reentrant circuit, but analysis of the dynamic relation of the reentrant circuit is sometimes difficult. This article describes three cases of complex dual-loop reentrant atrial tachycardia analyzed by entrainment mapping using not only the postpacing interval (PPI) but also the activation sequence of the last captured beats.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-11-06
      DOI: 10.1016/j.joa.2014.09.006
  • Failure of communication and capture: The perils of temporary unipolar
           pacing system
    • Authors: Efe Sahinoglu; Thomas J. Wool, Kenneth J. Wool
      Abstract: We present a case of a patient with pacemaker dependence secondary to complete heart block who developed loss of capture of her temporary pacemaker. Patient developed torsades de pointes then ventricular fibrillation, requiring CPR and external cardioversion. After patient was stabilized, it was noticed that loss of capture of pacemaker corresponded with nursing care, when the pulse generator was lifted off patient׳s chest wall, and that patient׳s temporary pacing system had been programmed to unipolar mode without knowledge of attending cardiologist.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-10-29
      DOI: 10.1016/j.joa.2014.09.004
  • Investigation of optimal position for implantable loop recorders by
           potential mapping with Reveal DX
    • Authors: Akira Kawashima; Fumi Tanimoto, Tsuyoshi Nagao, Takeshi Toyoshima, Yuji Okuyama
      Abstract: Electrode positioning is important for the operation of implantable loop recorders (ILRs). This study aimed to investigate optimal electrode positions for the implantation of ILRs.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-10-23
      DOI: 10.1016/j.joa.2014.09.005
  • Left intraventricular dyssynchrony caused by a false tendon
    • Authors: Tadanobu Irie; Koji Kurosawa, Yoshiaki Kaneko, Tadashi Nakajima, Rieko Tateno, Masahiko Kurabayashi
      Abstract: Left ventricular (LV) false tendons are usually benign, intraventricular myocardial structures, which may cause functional malfunction or deformation of the LV cavity due to mechanical stretching and dilatation of the LV wall. We present a case of non-ischemic cardiomyopathy complicated with intraventricular dyssynchrony that was caused by complete left bundle branch block and the mechanical pressure exerted by the stiff false tendon on the weakened mid-septum during systole.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-10-22
      DOI: 10.1016/j.joa.2014.09.002
  • Defibrillation lead placement using a transthoracic transatrial approach
           in a case without transvenous access due to lack of the right superior
           vena cava
    • Authors: Yosuke Otsuka; Hideo Okamura, Syunsuke Sato, Ikutaro Nakajima, Kohei Ishibashi, Kouji Miyamoto, Takashi Noda, Takeshi Aiba, Shiro Kamakura, Junjiro Kobayashi, Satoshi Yasuda, Hisao Ogawa, Kengo Kusano
      Abstract: A 65-year-old woman with a history of syncope was diagnosed with hypertrophic cardiomyopathy. She had previously undergone mastectomy of the left breast owing to breast cancer. Holter electrocardiogram (ECG) and monitor ECG revealed sick sinus syndrome (Type II) and non-sustained ventricular tachycardia. Sustained ventricular tachycardia and ventricular fibrillation were induced in an electrophysiological study. Although the patient was eligible for treatment with a dual chamber implantable cardioverter defibrillator (ICD), venography revealed lack of the right superior vena cava (R-SVC).
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-10-21
      DOI: 10.1016/j.joa.2014.09.003
  • Spatial and temporal variability of the complex fractionated atrial
           electrogram activity and dominant frequency in human atrial fibrillation
    • Authors: Rikitake Kogawa; Yasuo Okumura, Ichiro Watanabe, Masayoshi Kofune, Koichi Nagashima, Hiroaki Mano, Kazumasa Sonoda, Naoko Sasaki, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama
      Abstract: The presence of complex fractionated atrial electrograms (CFAEs) and high dominant frequencies (DFs) during atrial fibrillation (AF) have been demonstrated to be related to AF maintenance. Therefore, sequential mapping of CFAEs and DFs have been used for target sites of AF ablation. However, such mapping strategies are valid only if the CFAEs and DFs are spatiotemporally stable during the mapping procedure. We obtained spatially stable multi-electrode recordings to assess the spatiotemporal stability of CFAEs and DFs.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-25
      DOI: 10.1016/j.joa.2014.08.004
  • Evaluation of defibrillation safety and shock reduction in implantable
           cardioverter-defibrillator patients with increased time to detection: A
           randomized SANKS study
    • Authors: Mahito Noro; Xin Zhu, Takahito Takagi, Naohiko Sahara, Yuriko Narabayashi, Hikari Hashimoto, Naoshi Ito, Yoshinari Enomoto, Shingo Kujime, Tuyoshi Sakai, Takao Sakata, Noriko Matushita, Seiji Fukamizu, Yoshifumi Okano, Yoshiaki Anami, Tomoyuki Tejima, Kouji Kuroiwa, Takanori Ikeda, Harumizu Sakurada, Kaoru Sugi
      Abstract: The need for ways to minimize the number of implantable cardioverter-defibrillator (ICD) shocks is increasing owing to the risk of its adverse effects on life expectancy. Studies have shown that a longer detection time for ventricular tachyarrhythmia reduces the safety of therapies, in terms of syncope and mortality, but not substantially in terms of the success rate. We aimed to evaluate the effects of increased number of intervals to detect (NID) VF on the safety of ICD shock therapy and on the reduction of inappropriate shocks.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-25
      DOI: 10.1016/j.joa.2014.08.003
  • Magnetic resonance imaging of the left atrial appendage post pulmonary
           vein isolation: Implications for percutaneous left atrial appendage
    • Authors: Sheldon M. Singh; Laura Jimenez-Juan, Asaf Danon, Gorka Bastarrika, Andriy V. Shmatukha, Graham A. Wright, Eugene Crystal
      Abstract: There is increasing interest in performing left atrial appendage (LAA) occlusion at the time of atrial fibrillation (AF) ablation procedures. However, to date there has been no description of the acute changes to the LAA immediately following pulmonary vein (PV) isolation and additional left atrium (LA) substrate modification. This study assessed changes in the size and tissue characteristics of the LAA ostium in patients undergoing PV isolation.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-23
      DOI: 10.1016/j.joa.2014.08.005
  • QRS–ST–T triangulation with repolarization shortening as a
           precursor of sustained ventricular tachycardia during acute myocardial
    • Authors: Velislav N. Batchvarov; Elijah R. Behr
      Abstract: We present segments from a 24-hour 12-lead digital Holter recording in a 48-year-old man demonstrating transient ST elevations in the inferior leads that triggered sustained ventricular tachycardia/ventricular fibrillation (VT/VF) requiring cardioversion. The onset of VT was preceded by a gradual increase in the ST with marked QRS broadening that lacked distinction between the end of the QRS and the beginning of the ST (QRS–ST–T “triangulation”), and shortening of the QT interval not caused by an increased heart rate.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-20
      DOI: 10.1016/j.joa.2014.08.006
  • Recurrence of atrial fibrillation within three months after pulmonary vein
           isolation for patients with paroxysmal atrial fibrillation: Analysis using
           external loop recorder with auto-trigger function
    • Authors: Shiro Kawasaki; Kaoru Tanno, Akinori Ochi, Koichiro Inokuchi, Yuta Chiba, Yoshimi Onishi, Yoshimasa Onuma, Yumi Munetsugu, Miwa Kikuchi, Hiroyuki Ito, Tatsuya Onuki, Fumito Miyoshi, Yoshino Minoura, Norikazu Watanabe, Taro Adachi, Taku Asano, Youichi Kobayashi
      Abstract: Pulmonary vein isolation (PVI) via catheter ablation has been shown to be a highly effective treatment option for patients with symptomatic paroxysmal atrial fibrillation (AF). The recurrence of AF within 3 months after PVI is not considered to be the result of ablation procedure failure, because early recurrence of AF is not always associated with late recurrence. We examined the usefulness of an external loop recorder with an auto-trigger function (ELR-AUTO) for the detection of atrial fibrillation following PVI to characterize early recurrence and to determine the implications of AF occurrence within 3 months after PVI.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-20
      DOI: 10.1016/j.joa.2014.08.002
  • Japan Implantable Devices in Coronary Artery Disease (JID-CAD) study
    • Authors: Akihiko Shimizu; Takeshi Mitsuhashi, Takashi Nitta, Hideo Mitamura, Takashi Kurita, Haruhiko Abe, Yuji Nakazato, Naokata Sumitomo, Kazushige Kadota, Kazuo Kimura, Ken Okumura, the Committee for Implantable Devices Enrollment Assessment in the Japanese Heart Rhythm Society
      Abstract: There is little information regarding appropriate therapies for coronary artery disease (CAD) patients with implantable devices – such as implantable cardioverter-defibrillators (ICDs), cardiac resynchronization therapy devices (CRT-Ds) and cardiac resynchronization therapy pacemaker (CRT-P) devices – in Japan. To address this lack of information, we have launched the Japan Implantable Devices in Coronary Artery Disease (JID-CAD) study.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-14
      DOI: 10.1016/j.joa.2014.07.005
  • Clinical course of a case of variant angina treated with a pacemaker for
           cardiopulmonary arrest due to complete atrioventricular block and
           pulseless electrical activity
    • Authors: Yuichiro Yamada; Kazuho Kamishima, Hirotaka Kawarai, Shoji Haruta
      Abstract: In the Journal of Arrhythmia, we previously reported the case of a 55-year-old woman with variant angina who was implanted with a pacemaker to treat cardiopulmonary arrest due to complete atrioventricular block and pulseless electrical activity [1]. In this report, we follow the clinical outcome of the pacemaker implantation in this patient. Upon implantation, we simulated the proper and effective response of the pacemaker to prepare for the possibility that the patient might encounter coronary ischemia-induced bradycardia.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-09-14
      DOI: 10.1016/j.joa.2014.06.003
  • Premature ventricular beats initiate recurrent ventricular fibrillation in
           early repolarization syndrome
    • Authors: Nauman Ahmed; Antonio Frontera, Edward Duncan, Glyn Thomas
      Abstract: An early repolarization (ER) pattern on electrocardiography was historically considered a benign finding; however, this finding in the inferior and lateral leads has recently been associated with idiopathic ventricular fibrillation (VF). Here we describe a case of a 29-year-old man with an ER pattern, who experienced recurrent implantable cardioverter-defibrillator (ICD) shocks for ventricular tachycardia (VT) and VF. An ICD interrogation demonstrated how VF and VT were repeatedly initiated by closely coupled premature ventricular beats.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-28
      DOI: 10.1016/j.joa.2014.07.001
  • Oral direct renin inhibitor aliskiren reduces oxidative stress and serum
           matrix metalloproteinase-2 levels in patients with permanent atrial
    • Authors: Yoshizumi Takei; Minoru Ichikawa, Yoshiyuki Kijima
      Abstract: We aimed to determine the effects of the oral direct renin inhibitor aliskiren on in vivo oxidative stress in atrial fibrillation (AF) patients. In this study, 150mg oral direct renin inhibitor aliskiren was administered once daily to 12 permanent AF patients. Aliskiren significantly reduced urinary excretion of the oxidative stress biomarker 8-iso-prostglandin F2α and serum levels of matrix metalloproteinase-2(MMP-2). We concluded that aliskiren reduces in vivo oxidative stress and serum MMP-2 levels in patients with permanent AF.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-26
      DOI: 10.1016/j.joa.2014.07.002
  • Is it a typical crosstalk: Need for re-implantation?
    • Authors: Zeynettin Kaya; Kursat Akbuga, Alpay Aribas, Ilknur Can
      Abstract: With constantly evolving technology and an ever-increasing number of patients with pacemakers, clinicians will encounter various pacemaker malfunctions in their practice. While some of these issues can be solved even by using only the pacemaker׳s mode settings, others require re-intervention; neglecting a pacemaker׳s malfunction without full investigation threatens the patient׳s life. In this report, we describe a patient with a dual-chamber pacemaker with neglected or unresolved dyssynchronization that occurred 2 years after implantation.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-26
      DOI: 10.1016/j.joa.2014.07.004
  • Enlargement of the left atrium is associated with increased infiltration
           of immune cells in patients with atrial fibrillation who had undergone
    • Authors: Takeshi Yamashita; Akiko Sekiguchi, Shinya Suzuki, Takayuki Ohtsuka, Koichi Sagara, Hiroaki Tanabe, Takashi Kunihara, Hitoshi Sawada, Tadanori Aizawa
      Abstract: Enlargement of the left atrium (LA) is a risk factor of atrial fibrillation (AF) recurrence after pharmacological and nonpharmacological interventions for AF. However, structural changes associated with LA enlargement have not been fully elucidated.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-23
      DOI: 10.1016/j.joa.2014.07.003
  • Serum phosphate levels reflect responses to cardiac resynchronization
           therapy in chronic heart failure patients
    • Authors: Yoshiyuki Kamiyama; Hitoshi Suzuki, Shinya Yamada, Takashi Kaneshiro, Yasuchika Takeishi
      Abstract: Recent studies have shown that high levels of serum phosphate are associated with adverse cardiovascular events. However, little is known about the relation between phosphate levels and improvement of cardiac function in chronic heart failure (CHF) patients who underwent cardiac resynchronization therapy (CRT). The purpose of this study was to examine whether serum phosphate levels were able to predict responders to CRT and adverse cardiac events.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-20
      DOI: 10.1016/j.joa.2014.06.006
  • Left atrial anomalous muscular band detected by computed tomography before
           catheter ablation in a patient with atrial fibrillation
    • Authors: Katsunori Okajima; Kimitake Imamura, Gaku Kanda, Akira Shimane
      Abstract: A 65-year-old man was referred to our hospital with persistent atrial fibrillation (AF). Before the ablation procedure, 3-dimensional computed tomography revealed a left atrial anomalous muscular band connecting the posterior side of the left atrial roof and the right edge of the fossa ovalis. During the first ablation procedure, the band interfered with the manipulation of the catheter, resulting in only the left pulmonary vein (PV) being isolated. However, AF recurred. During the second procedure, careful catheter manipulation permitted complete right PV isolation, after which, the patient has not had AF recurrence for more than 3 years.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-07
      DOI: 10.1016/j.joa.2014.06.004
  • Visualizing radiofrequency lesions using delayed-enhancement magnetic
           resonance imaging in patients with atrial fibrillation: A modification of
           the method used by the University of Utah group
    • Authors: Kunihiko Kiuchi; Katsunori Okajima, Akira Shimane, Kiminobu Yokoi, Jin Teranishi, Kousuke Aoki, Misato Chimura, Hideo Tsubata, Taishi Miyata, Yuuki Matsuoka, Takayoshi Toba, Shogo Ohishi, Takahiro Sawada, Yasue Tsukishiro, Tetsuari Onishi, Seiichi Kobayashi, Shinichiro Yamada, Yasuyo Taniguchi, Yoshinori Yasaka, Hiroya Kawai, Kazushi Ikeuchi, Yutaka Shigenaga, Takayuki Ikeda
      Abstract: Atrial tissue fibrosis has previously been identified using delayed-enhancement MRI (DE-MRI) in patients with atrial fibrillation (AF). Although the clinical importance of DE-MRI is well recognized, the visualization of atrial fibrosis and radiofrequency (RF) lesions has still not been achieved in Japan, primarily because of the differences in contrast agents, volume-rendering tools, and technical experience. The objective of this study was to visualize RF lesions by using commercially available tools.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-07
      DOI: 10.1016/j.joa.2014.06.005
  • A case of short-coupled premature ventricular beat-induced ventricular
           fibrillation with early repolarization in the inferolateral leads
    • Authors: Hidekazu Kondo; Tetsuji Shinohara, Naohiko Takahashi
      Abstract: This case report describes a 19-year-old man with early repolarization (ER) in the inferolateral leads and a normal QT interval who survived a cardiac arrest that was likely related to polymorphic ventricular tachycardia (VT). Electrocardiograms (ECGs) also showed unifocal premature ventricular beats (PVBs) with a relatively narrow QRS duration. A Holter ECG documented occasional short-coupled PVBs following non-sustained VTs. Pharmacological stress testing was also performed to assess the effects of anti-arrhythmic drugs on ER (the J wave) and PVBs.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-08-01
      DOI: 10.1016/j.joa.2014.06.002
  • Nationwide survey of catheter ablation for atrial fibrillation: The
           Japanese catheter ablation registry of atrial fibrillation
           (J-CARAF)–A report on periprocedural oral anticoagulants
    • Authors: Yuji Murakawa; Akihiko Nogami, Morio Shoda, Koichi Inoue, Shigeto Naito, Koichiro Kumagai, Yasushi Miyauchi, Teiichi Yamane, Norishige Morita, Hideo Mitamura, Ken Okumura, on behalf of the Japanese Heart Rhythm Society׳s members
      Abstract: Catheter ablation has become an established therapy for the treatment of atrial fibrillation (AF). To obtain a perspective on the current status of this therapy in Japan, the Japanese Heart Rhythm Society (JHRS) conducted a nationwide survey, the Japanese Catheter Ablation Registry of Atrial Fibrillation (J-CARAF). In this study, we focused on whether periprocedural use of novel oral anticoagulants (NOACs) was related with excessive thromboembolic or bleeding complications.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-07-05
      DOI: 10.1016/j.joa.2014.05.003
  • Long-term outcomes of catheter ablation of ventricular tachycardia in
           patients with structural heart disease
    • Authors: Masahiko Goya; Masato Fukunaga, Ken-ichi Hiroshima, Kentaro Hayashi, Yu Makihara, Michio Nagashima, Yoshimori An, Seiji Ohe, Kennosuke Yamashita, Kenji Ando, Hiroyoshi Yokoi, Masashi Iwabuchi, Kouji Katayama, Tomoaki Ito, Harushi Niu
      Abstract: Catheter ablation of ventricular tachycardia (VT) is feasible. However, the long-term outcomes for different underlying diseases have not been well defined.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-07-03
      DOI: 10.1016/j.joa.2014.06.001
  • Measurement of the ventriculoatrial interval from the coronary sinus
           during para-Hisian pacing may fail to distinguish ventriculoatrial nodal
           conduction from conduction over a septal accessory pathway
    • Authors: Takafumi Iijima; Yoshiaki Kaneko, Tadashi Nakajima, Tadanobu Irie, Masaki Ota, Akihiro Saito, Masahiko Kurabayashi
      Abstract: Para-Hisian pacing (PHP) helps differentiate retrograde conduction over an accessory pathway (AP) from retrograde conduction over the atrioventricular (AV) node. This study examined a potential limitation of this technique, focusing on the measurement of the ventriculoatrial (V–A) interval from the coronary sinus (CS) during PHP.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-07-03
      DOI: 10.1016/j.joa.2014.05.005
  • A case of cardiac sarcoidosis presenting with double tachycardia
    • Authors: Keiko Takahashi; Yasuo Okumura, Ichiro Watanabe, Koichi Nagashima, Hiroaki Mano, Kazumasa Sonoda, Rikitake Kogawa, Naoko Sasaki, Kazuki Iso, Kimie Okubo, Toshiko Nakai, Atsushi Hirayama
      Abstract: Although the most feared cardiac manifestation in cardiac sarcoidosis is the onset of ventricular arrhythmia, some patients may present with supraventricular arrhythmias. We present a rare case of cardiac sarcoidosis associated with double tachycardia manifesting as atrial flutter and ventricular tachycardia.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-27
      DOI: 10.1016/j.joa.2014.05.004
  • Incidence of esophageal injury after pulmonary vein isolation in patients
           with a low body mass index and esophageal temperature monitoring at a
           39°C setting
    • Authors: Kunihiko Kiuchi; Katsunori Okajima, Akira Shimane, Gaku Kanda, Kiminobu Yokoi, Jin Teranishi, Kousuke Aoki, Misato Chimura, Hideo Tsubata, Taishi Miyata, Yuuki Matsuoka, Takayoshi Toba, Shogo Ohishi, Takahiro Sawada, Yasue Tsukishiro, Tetsuari Onishi, Seiichi Kobayashi, Yasuyo Taniguchi, Shinichiro Yamada, Yoshinori Yasaka, Hiroya Kawai, Takashi Harada, Masato Ohsawa, Yasutomo Azumi, Mitsuharu Nakamoto
      Abstract: Esophageal injury following catheter ablation of atrial fibrillation (AF) is reported to occur in 35% of patients. Even with a low energy setting (20–25W), lesions develop in 10% of patients. Body mass index (BMI) has been reported to be a predictor of esophageal injury, indicating that patients with a low BMI (
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-19
      DOI: 10.1016/j.joa.2014.05.002
  • Relation between frequency of activated partial prothrombin time
           measurements and clinical outcomes in patients after initiation of
           dabigatran: A two-center cooperative study
    • Authors: Takeshi Yamashita; Shigeo Horinaka, Noritaka Matsuhashi, Naoko Suzuki, Shinya Suzuki, Takayuki Ohtsuka, Kouichi Sagara
      Abstract: Although activated partial prothrombin time (aPTT) has often been used as a biomarker for evaluating the safety of dabigatran use in patients with non-valvular atrial fibrillation (NVAF), the optimal frequency of aPTT measurements is unclear. This study aimed to identify the frequency distribution of aPTT measurements in clinical practice and its clinical significance.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-16
      DOI: 10.1016/j.joa.2014.05.001
  • Right atrial tachycardia with 2:1 intra-atrial conduction
    • Authors: Masayoshi Kofune; Ichiro Watanabe, Yasuo Okumura
      Abstract: In a case of atrial tachycardia (AT) originating from the inferolateral right atrium, cycle length (CL) alternans was observed. Conduction at the longer CL was to the high right atrium (HRA), His bundle electrogram region (HBE), and coronary sinus (CS). Conduction at the shorter CL was to the HRA, with that to the HBE and CS blocked.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-07
      DOI: 10.1016/j.joa.2014.04.008
  • The optimal setting of complex fractionated atrial electrogram software in
           substrate ablation for atrial fibrillation
    • Authors: Fuminori Namino; Yasuhisa Iriki, Ryuichi Maenosono, Hitoshi Ichiki, Hideki Okui, Akino Yoshimura, Naoya Oketani, Masakaze Matsushita, Mitsuru Ohishi, Teruto Hashiguchi
      Abstract: Complex fractionated atrial electrogram (CFAE)-targeted catheter ablation (CFAE ablation) requires a high rate of atrial fibrillation (AF) termination to provide good outcomes. We determined the optimal settings of CFAE software.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-04
      DOI: 10.1016/j.joa.2014.04.006
  • A young patient with atypical type-B Wolff–Parkinson–White
           syndrome accompanied by left ventricular dysfunction
    • Authors: Takahiro Takeuchi; Takeshi Tomita, Hiroki Kasai, Daisuke Kashiwagi, Koji Yoshie, Tomonori Yaguchi, Yasutaka Oguchi, Ayako Kozuka, Milan Gautam, Hirohiko Motoki, Ayako Okada, Yuji Shiba, Kazunori Aizawa, Atsushi Izawa, Yusuke Miyashita, Jun Koyama, Minoru Hongo, Uichi Ikeda
      Abstract: A 15-year-old asymptomatic male patient presented with an electrocardiographic abnormality and left ventricular (LV) dysfunction (left ventricle ejection fraction of 40%) in a physical examination performed 2 years previously. LV dysfunction did not improve despite optimal medical therapy for dilated cardiomyopathy. Twelve-lead electrocardiography revealed a normal PR interval (138ms) with a small delta-like wave in V2, but not a typical diagnostic wave that could be diagnosed as Wolff–Parkinson–White (WPW) syndrome by an electrocardiogram auto-analysis.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-05-08
      DOI: 10.1016/j.joa.2014.03.011
  • Prominent J-wave and T-wave alternans associated with mechanical alternans
           in a patient with takotsubo cardiomyopathy
    • Authors: Rintaro Hojo; Seiji Fukamizu, Takeshi Kitamura, Kota Komiyama, Yasuhiro Tanabe, Tamotsu Tejima, Mitsuhiro Nishizaki, Harumizu Sakurada, Masayasu Hiraoka
      Abstract: A 74-year-old woman with takotsubo cardiomyopathy developed polymorphic ventricular tachycardia during the acute phase. She exhibited prominent J-wave and T-wave alternans preceding ventricular tachycardia. These abnormalities disappeared after recovery from myocardial stunning.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-05-07
      DOI: 10.1016/j.joa.2014.03.008
  • Late onset interstitial pneumonia induced by bepridil: A case report
    • Authors: Manabu Matsumoto; Masanobu Ohga, Shumpo Uemura
      Abstract: A 63-year-old man was prescribed bepridil for paroxysmal atrial fibrillation in May 2011. He was referred to our hospital with the chief complaint of slight dyspnea in October 2012. Radiography and computed tomography indicated diffuse bilateral peribronchial infiltration. Since an examination of the bronchial alveolar lavage fluid revealed inflammatory lymphocytes and a drug lymphocyte stimulation test was strongly positive for bepridil, he was diagnosed with bepridil-induced interstitial pneumonia.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-30
      DOI: 10.1016/j.joa.2014.03.007
  • Effect of intravenous amiodarone on QT and T peak–T end dispersions
           in patients with nonischemic heart failure treated with cardiac
           resynchronization-defibrillator therapy and electrical storm
    • Authors: Masataka Ogiso; Atsushi Suzuki, Tsuyoshi Shiga, Kenji Nakai, Morio Shoda, Nobuhisa Hagiwara
      Abstract: The effect of intravenous amiodarone on spatial and transmural dispersion of ventricular repolarization in patients receiving cardiac resynchronization therapy (CRT) remains unclear.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-07
      DOI: 10.1016/j.joa.2014.01.006
  • Cardiac fibrosis as a determinant of ventricular tachyarrhythmias
    • Authors: Norishige Morita; William J. Mandel, Yoshinori Kobayashi, Hrayr S. Karagueuzian
      First page: 389
      Abstract: Animal and emerging clinical studies have demonstrated that increased ventricular fibrosis in a setting of reduced repolarization reserve promotes early afterdepolarizations (EADs) and triggered activity that can initiate ventricular tachycardia and ventricular fibrillation (VT/VF). Increased ventricular fibrosis plays a key facilitatory role in allowing oxidative and metabolic stress-induced EADs to manifest as triggered activity causing VT/VF. The lack of such an arrhythmogenic effect by the same stressors in normal non-fibrotic hearts highlights the importance of fibrosis in the initiation of VT/VF.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-03-10
      DOI: 10.1016/j.joa.2013.12.008
  • Remote monitoring of cardiac implantable electronic devices
    • Authors: Nobuhiro Nishii
      First page: 395
      Abstract: Patients with cardiac implantable electronic devices (CIEDs) have been followed with periodic clinic visits. The number of patients with CIEDs has been increasing and CIEDs have become more complex. The workload of both medical staff and patients for CIED follow-up has also been increasing. Remote monitoring (RM) technology has undergone many developments, and RM has been used since 2008 in Japan. The benefits of RM are evident, but there are also problems with the technology. Different systems and various skills are required for RM management compared to conventional follow-up methods.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-05-23
      DOI: 10.1016/j.joa.2014.03.009
  • Ventriculoventricular delay optimization of a cardiac resynchronization
    • Authors: Koichi Sagara
      First page: 413
      Abstract: Cardiac resynchronization therapy (CRT) has become a standard option for patients with severe low cardiac function and mild to severe heart failure. However, its potential has not been maximized to date, as the optimal atrioventricular delay, ventriculoventricular (VV) delay, and tachy therapy settings remain unknown. Here, data from various studies have been used to estimate several CRT settings.Three search words—interventricular interval, VV delay, and interventricular delay with cardiac resynchronization therapy—were entered into PubMed.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-12
      DOI: 10.1016/j.joa.2014.03.013
  • Role of permanent cardiac pacing for vasovagal syncope
    • Authors: Masataka Sumiyoshi
      First page: 417
      Abstract: The role of pacemaker therapy for vasovagal syncope (VVS) is still controversial. The ISSUE 3 study led to reappraisal of pacing therapy (using DDD pacing with the rate-drop response algorithm) for reducing syncope recurrence in a highly selected patient group (age, ≥40 years) with asystolic VVS clinically documented by implantable loop recorder. However, the role of pacemaker treatment for young (age,
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-19
      DOI: 10.1016/j.joa.2014.04.009
  • Remote monitoring of cardiovascular implantable electronic devices in
    • Authors: Hideo Okamura
      First page: 421
      Abstract: The number of patients with chronically implanted cardiovascular implantable electronic devices (CIEDs) keeps growing, and device clinics of major hospitals may soon be unable to fully accommodate the increasing amount of follow-up activities. Consequently, the remote monitoring (RM) technology introduced in Japan in 2010 has been rapidly gaining widespread application in the management of CIEDs.A modern remote monitor not only acts as an alternative to a device clinic, but also as a security monitor for the device and the patient.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-10
      DOI: 10.1016/j.joa.2014.04.012
  • Device therapy in pediatric and congenital heart disease patients
    • Authors: Naokata Sumitomo
      First page: 428
      Abstract: Device therapy is an established therapy for preventing sudden cardiac death or managing refractory congestive heart failure in adults. However, it is performed less commonly in pediatric populations. This review aimed to examine the indications and problems associated with implantable cardioverter-defibrillator (ICD) and cardiac resynchronization therapy (CRT) device implantations in pediatric and congenital heart disease (CHD) patients.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-06-19
      DOI: 10.1016/j.joa.2014.04.013
  • Ablation on the mitral annulus for the treatment of atrial fibrillation:
           Anatomical consideration to prevent coronary injury
    • Authors: Hajime Imura; Kiyomi Y. Hames, Yasuo Miyagi, Hiroshige Murata, Takashi Nitta, Masami Ochi
      First page: 444
      Abstract: Coronary injury is a crucial complication of ablation on the posterior mitral annulus (PMA). Fifty autopsy heart specimens were classified into different types according to the final branch of the left circumflex coronary artery. The no-coronary area on the PMA was examined in each type. The posterolateral type was most common (39/50); the no-coronary area was located between 50.7%±6.5% and 83.5%±8.0% on the PMA. Ablations at 38.6%±5.2% (for catheter intervention) and the middle point (for surgery) appear safe for the obtuse marginal type but not for the posterolateral type.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-01-16
      DOI: 10.1016/j.joa.2013.11.003
  • Analysis of the spatial and transmural dispersion of repolarization and
           late potentials derived using signal-averaged vector-projected 187-channel
           high-resolution electrocardiogram in patients with early repolarization
    • Authors: Kimie Ohkubo; Ichiro Watanabe, Yasuo Okumura, Kazumasa Sonoda, Naoko Sasaki, Rikitake Kogawa, Keiko Takahashi, Toshiko Nakai, Satoshi Kunimoto, Yuji Kasamaki, Atsushi Hirayama
      First page: 446
      Abstract: Electrophysiological characteristics of early repolarization syndrome (ERS), i.e., the spatial and transmural dispersion of ventricular repolarization and ventricular late potentials can be evaluated using a signal-averaged vector-projected 187-channel high-resolution electrocardiogram (187-ch SAVP-ECG). We investigated these characteristics as markers of ventricular fibrillation and sudden cardiac arrest in patients presenting with an ER pattern.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-02-26
      DOI: 10.1016/j.joa.2013.12.002
  • Frequency analysis of surface electrocardiograms (ECGs) in patients with
           persistent atrial fibrillation: Correlation with the intracardiac ECGs and
           implications for radiofrequency catheter ablation
    • Authors: Shunsuke Uetake; Yasushi Miyauchi, Motohisa Osaka, Meiso Hayashi, Yu-ki Iwasaki, Kenji Yodogawa, Tsutomu Horie, Ippei Tsuboi, Hiroshi Hayashi, Kenta Takahashi, Wataru Shimizu
      First page: 453
      Abstract: The nature and significance of the frequency characteristics of the surface electrocardiogram (ECG) in patients with persistent atrial fibrillation (AF) undergoing radiofrequency ablation are unclear.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-02-14
      DOI: 10.1016/j.joa.2013.12.003
  • Prognostic impact of atrial fibrillation in patients with acute myocardial
    • Authors: Shunta Tateyama; Takumi Higuma, Tomohide Endo, Shuji Shibutani, Kenji Hanada, Hiroaki Yokoyama, Masahiro Yamada, Naoki Abe, Shingo Sasaki, Masaomi Kimura, Ken Okumura
      First page: 460
      Abstract: Atrial fibrillation (AF) is the most common supraventricular tachyarrhythmia in patients with acute myocardial infarction (AMI). However, little is known about the impact of AF on in-hospital and long-term mortalities in patients with AMI in the era of primary percutaneous coronary intervention (PCI).
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-02-10
      DOI: 10.1016/j.joa.2013.12.006
  • Changes over time in echocardiographic variables and atrial
           electromechanical intervals after ablation for atrial fibrillation
    • Authors: Hiroaki Mano; Yasuo Okumura, Ichiro Watanabe, Masakatsu Ohta, Rikitake Kogawa, Naoko Sasaki, Toshiko Nakai, Kimie Ohkubo, Masayoshi Kofune, Koichi Nagashima, Kazumasa Sonoda, Hironori Haruta, Atsushi Hirayama
      First page: 466
      Abstract: Acute and mid-term effects of ablation for atrial fibrillation (AF) on left atrial (LA) and left ventricular (LV) function and the atrial electromechanical interval are controversial.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-03-20
      DOI: 10.1016/j.joa.2014.01.005
  • Characteristics of head-up tilt testing with additional adenosine compared
           with head-up tilt testing with isoproterenol and isosorbide dinitrate
    • Authors: Norikazu Watanabe; Shirou Kawasaki, Yoshimi Oonishi, Yoshimasa Onuma, Yumi Munetsugu, Takayuki Itou, Tatsuya Onuki, Fumito Miyoshi, Yoshino Minoura, Tarou Adachi, Mitsuharu Kawamura, Taku Asano, Kaoru Tanno, Youichi Kobayashi
      First page: 473
      Abstract: Head-up tilt (HUT) testing is used to establish the diagnosis of neurally mediated syncope (NMS). Adenosine administration during HUT testing is useful for inducing NMS. However, no comparison between adenosine HUT testing and HUT testing using other drugs has been reported. The purpose of this study was to investigate the clinical usefulness of adenosine compared with isoproterenol (ISP) and isosorbide (ISDN) during HUT testing.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-03-24
      DOI: 10.1016/j.joa.2014.02.004
  • Observational study of the effects of dabigatran on gastrointestinal
           symptoms in patients with non-valvular atrial fibrillation
    • Authors: Takeshi Yamashita; Eiichi Watanabe, Takanori Ikeda, Tsuyoshi Shiga, Kengo F. Kusano, Naohiko Takahashi, Toshiyuki Takahashi, Akira Nozaki, Masashi Kasao, Tohru Fukatsu, Yuichiro Kawamura, Takashi Komatsu, Naoki Matsumoto, Tomoharu Arakawa, Atsushi Sugiura, Tetsu Iwao, Tatsuhiko Ooie
      First page: 478
      Abstract: Dyspepsia (including upper abdominal pain, abdominal pain, abdominal discomfort, epigastric discomfort, and dyspepsia) is a symptom that is carefully monitored during dabigatran treatment. However, detailed information on dyspepsia, including onset, duration, severity, and use of drug treatment, has not yet been established in Japanese patients.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-24
      DOI: 10.1016/j.joa.2014.02.011
  • Prognostic value of T-wave alternans in survivors of ventricular
           fibrillation or hemodynamically unstable ventricular tachycardia
    • Authors: Shinya Yamada; Hitoshi Suzuki, Takashi Kaneshiro, Yoshiyuki Kamiyama, Shu-ichi Saitoh, Yasuchika Takeishi
      First page: 485
      Abstract: T-wave alternans is useful for predicting the occurrence of ventricular tachyarrhythmias and sudden cardiac death in various heart diseases. However, little is known about the clinical significance of T-wave alternans measurement in survivors of ventricular fibrillation (VF) or hemodynamically unstable ventricular tachycardia (VT).
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-14
      DOI: 10.1016/j.joa.2014.02.010
  • Anatomical consideration for safe pericardiocentesis assessed by
           three-dimensional computed tomography: Should an anterior or posterior
           approach be used?
    • Authors: Jin Teranishi; Katsunori Okajima, Kunihiko Kiuchi, Akira Shimane, Koji Fukuzawa, Gaku Kanda, Kiminobu Yokoi, Shinichiro Yamada, Yasuyo Taniguchi, Yoshinori Yasaka, Hiroya Kawai
      First page: 491
      Abstract: The efficacy of epicardial catheter ablation for ventricular tachycardia has been reported. However, the safest anatomical method for pericardial puncture has not been determined.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-25
      DOI: 10.1016/j.joa.2014.03.006
  • A case of typical atrioventricular nodal (AVN) reentrant tachycardia
           confined to the compact AV node, showing a variety of rare
           electrophysiological findings, including eccentric AVN echoes
    • Authors: Kazushi Tanaka; Shinji Shiotani, Keisuke Fukuda, Masahiko Fujihara, Akihiro Higashimori, Nobuyuki Morioka, Yoshiaki Yokoi, Osamu Fujimura
      First page: 496
      Abstract: Herein, we report the case of a 49-year-old woman with typical atrioventricular nodal (AVN) reentrant tachycardia, confined to the compact atrioventricular node, showing numerous rare electrophysiological findings such as unique AVN reentrant echoes, double ventricular responses, latent retrograde dual AVN pathways, antegrade triple AVN pathways, and longitudinal dissociation within the lower final common pathway.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-01-02
      DOI: 10.1016/j.joa.2012.12.016
  • Continuous positive airway pressure therapy converted atrial fibrillation
           in a patient with obstructive sleep apnea
    • Authors: Vichai Senthong; Jarin Chindaprasirt, Pattarapong Makarawate, Panita Limpawattana, Akkaranee Timinkul, Aonchuma Domthong, Somchit Chumjan, Verajit Chotmongkol, Noppadol Aekphachaisawat, Kittisak Sawanyawisuth
      First page: 502
      Abstract: Obstructive sleep apnea (OSA) is one of the possible causes of atrial fibrillation (AF). Continuous positive airway pressure (CPAP) therapy may lower the recurrence rate of AF after cardioversion to normal sinus rhythm. We report a case of AF caused by OSA and successfully converted by CPAP therapy.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-01-16
      DOI: 10.1016/j.joa.2013.12.001
  • Takotsubo cardiomyopathy in the presence of right ventricular apical
           pacing: A case report
    • Authors: Manabu Matsumoto; Masanobu Ohga, Shumpo Uemura, Koichi Node
      First page: 506
      Abstract: In Takotsubo cardiomyopathy (TCM), ST-segment elevation, T-wave inversion, and QTc prolongation are the most common electrocardiography (ECG) findings during acute and subacute periods. Right ventricular apical (RVA) pacing produces a left ventricular electrical activation sequence resembling a left bundle-branch block, and the ST–T segment changes are usually discordant from the QRS complex. Several cases have reported that abnormal ECG manifestations in TCM could be detected even in patients with a paced ventricular rhythm.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-02-07
      DOI: 10.1016/j.joa.2013.12.004
  • A case of inappropriate implantable cardioverter defibrillator shock due
           to epileptic seizures: A possible limitation of the Wavelet discrimination
    • Authors: Yuji Ishida; Shingo Sasaki, Hirofumi Tomita, Masaomi Kimura, Shingen Owada, Daisuke Horiuchi, Kenichi Sasaki, Taihei Itoh, Tomohide Endo, Akiko Suzuki, Shunta Tateyama, Takahiko Kinjo, Ken Okumura
      First page: 509
      Abstract: In the present report, we describe the case of a 63-year-old man who received an inappropriate implantable cardioverter defibrillator (ICD) shock due to an epileptic seizure. He experienced an acute myocardial infarction 12 months previously, and his left ventricular (LV) ejection fraction was markedly reduced (21.1%) due to the presence of advanced LV remodeling and an LV aneurysm. An implantable cardioverter-defibrillator (ICD, Medtronic Protecta XT VR) was implanted for the primary prevention of sudden cardiac death.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-02-19
      DOI: 10.1016/j.joa.2013.12.007
  • The usefulness of nifekalant for activation mapping of premature
           beat-triggered atrial fibrillation: Suppression of atrial fibrillation
           initiation without inhibiting premature beat
    • Authors: Masaharu Masuda; Yuji Okuyama, Hiroya Mizuno, Hitoshi Minamiguchi, Shozo Konishi, Tsuyoshi Mishima, Tomohito Ohtani, Shinsuke Nanto, Yasushi Sakata
      First page: 513
      Abstract: A 66-year-old man underwent a second ablation for atrial fibrillation (AF). Intravenous isoproterenol administration caused the atrial premature beat (APB), triggering AF. The APB originated in the right atrium and invariably initiated AF. Therefore, contact activation mapping could not be performed without frequent electrocardioversion. To prevent the initiation of AF without inhibiting the APB firing, we administered nifekalant intravenously, which facilitated precise activation mapping and ablation of the AF-triggering APB.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-03-10
      DOI: 10.1016/j.joa.2014.01.003
  • Intra-cardiac echocardiography guided catheter ablation of a right
           posterior accessory pathway in a patient with Ebstein׳s anomaly
    • Authors: Akira Shimane; Katsunori Okajima, Kunihiko Kiuchi, Gaku Kanda, Kiminobu Yokoi, Jin Teranishi, Kousuke Aoki, Misato Chimura, Shinichiro Yamada, Yasuyo Taniguchi, Hiroya Kawai, Yoshinori Yasaka, Mitsuhiro Yokoyama
      First page: 515
      Abstract: We report a case of Ebstein׳s anomaly in which radiofrequency catheter ablation of an accessory pathway was successfully performed under intra-cardiac echocardiography. A 50-year-old woman was referred to our hospital for radiofrequency catheter ablation of a paroxysmal supraventricular tachycardia. A 12-lead surface electrocardiogram revealed ventricular pre-excitation associated with type B Wolff–Parkinson–White syndrome. In the baseline electrophysiological study, an orthodromic atrioventricular reciprocating tachycardia with a right posterior accessory pathway was induced.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-03-21
      DOI: 10.1016/j.joa.2014.02.002
  • Cardiac resynchronization therapy for exercise-induced left ventricular
           dysfunction in the setting of left bundle branch block: A case report and
           review of the literature
    • Authors: JoEllyn M. Abraham; James D. Thomas, Bruce L. Wilkoff
      First page: 519
      Abstract: Exercise-induced dyspnea is one of the most common symptoms that cause a patient to see a physician and a broad differential diagnosis is required. In this case report, we describe a patient with this complaint who had a left bundle branch block and preserved left ventricular function at rest. On stress echocardiography, she had significant exercise-induced left ventricular dysfunction and associated mitral regurgitation but a coronary angiogram demonstrated normal coronary arteries. Both of the echocardiographic findings, as well as her symptoms, improved with the placement of a bi-ventricular pacemaker.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-03-03
      DOI: 10.1016/j.joa.2014.02.001
  • Right ventricular perforation by a passive-fixation pacemaker lead two
           weeks after implantation
    • Authors: Azeem S. Sheikh; Farazin Hosseini-Ardehali, Sajjad Mazhar
      First page: 522
      Abstract: Myocardial perforation is a rare complication of permanent pacemaker implantation. While most of the perforations occur at the time of implantation or within the first 24h, delayed myocardial perforations are very rare. The clinical course is extremely variable with some patients presenting completely asymptomatic, while others can develop cardiac tamponade and haemodynamic instability. We report an unusual case of a subacute ventricular perforation caused by a passive-fixation lead two weeks after implantation and we successfully managed to extract the lead under local anaesthesia, without the patient undergoing surgery, as recommended in the previously published reports.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-10
      DOI: 10.1016/j.joa.2014.03.005
  • Riata lead failure presenting as a life-threatening electrical storm: A
           novel manifestation of electrical lead failure
    • Authors: Jayaprakash Shenthar; Somasekhar Ghanta, Maneesh K. Rai, Rohit Walia
      First page: 525
      Abstract: The Riata and Riata ST family of implantable cardioverter-defibrillator leads are prone to a unique type of structural failure involving exteriorization of the conductor cables, which may present as electrical failure. We report a mode of lead failure that occurred in a patient with a Riata 1570 series dual coil 8F lead. In this case, the first appropriate shock for ventricular fibrillation resulted in noise, that in turn led to recurrent inappropriate shocks and proarrhythmia, that clinically mimicked a life-threatening electrical storm.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-07
      DOI: 10.1016/j.joa.2014.03.003
  • Eccentric activation of the coronary sinus during typical atrial flutter:
           What is the mechanism?
    • Authors: Yoshiaki Kaneko; Tadashi Nakajima, Tadanobu Irie, Masaki Ota, Takafumi Iijima, Mio Tamura, Takashi Iizuka, Shuntaro Tamura, Masahiko Kurabayashi
      First page: 529
      Abstract: A 79-year-old man with a history of ventricular septal defect underwent catheter ablation of drug refractory paroxysmal atrial flutter (AFL). The 12-lead electrocardiogram during tachycardia showed a biphasic, predominantly positive flutter wave with an initial negative component in leads II, III, and aVF, and positive flutter waves in leads V1 through V6 (Fig. 1, A), consistent with typical counterclockwise (CCW) AFL [1]. A decapolar catheter was advanced with its ♯17 and ♯18 poles in the proximal coronary sinus (CS), and a deflectable duodecapolar Halo catheter was placed parallel to the tricuspid annulus (TA), across the inferior vena cava (IVC)-TA isthmus, with its tip at the CS ostium (Fig.
      Citation: Journal of Arrhythmia (2014)
      PubDate: 2014-04-09
      DOI: 10.1016/j.joa.2014.02.006
  • Spatial and transmural repolarization, and dispersion of repolarization
           and late potentials evaluated using signal-averaged vector-projected
           187-channel high-resolution electrocardiogram in Brugada syndrome
    • Authors: Kimie Ohkubo; Ichiro Watanabe, Yasuo Okumura, Masayoshi Kofune, Koichi Nagashima, Hiroaki Mano, Kazumasa Sonoda, Toshiko Nakai, Yuji Kasamaki, Atsushi Hirayama, Naokata Sumitomo, Tomohiro Nakayama
      First page: 433
      Abstract: Vector-projected 187-channel electrocardiograms (ECGs) were recorded in 45 patients with a Brugada-type ECG to evaluate spatial and transmural repolarization and dispersion of action potential duration in Brugada syndrome (BS).
      Citation: Journal of Arrhythmia (2013)
      PubDate: 2013-12-23
  • A simple algorithm for localizing accessory pathways in patients with
           Wolff-Parkinson-White syndrome using only the R/S ratio
    • Authors: Noriko Taguchi; Naoki Yoshida, Yasuya Inden, Toshihiko Yamamoto, Shinjiro Miyata, Masaya Fujita, Kenichiro Yokoi, Seifuku Kyo, Masayuki Shimano, Makoto Hirai, Toyoaki Murohara
      First page: 439
      Abstract: Several algorithms for localizing accessory pathways (APs) are based on the delta wave morphology, R/S ratio, and QRS polarity. However, they are somewhat complicated, and an accurate determination of the delta wave morphology is occasionally difficult. The aims of this study were to develop a simple algorithm for localizing APs using only the R/S ratio, and to test the accuracy of the algorithm prospectively.
      Citation: Journal of Arrhythmia (2013)
      PubDate: 2013-12-23
  • 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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