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Journal of Arrhythmia

Colin Yeo, Girish M Nair, Martin Green
No abstract text is available yet for this article.
December 2018: Journal of Arrhythmia
Mukund Aravind Prabhu, Saritha Shekhar, Praveen Pai, Kumaraswamy Umayammal Natarajan
No abstract text is available yet for this article.
December 2018: Journal of Arrhythmia
Christian Steinberg, Marc W Deyell, Santabhanu Chakrabarti
Implantation of a cardiac resynchronization therapy (CRT) device in patients with congenital heart disease may be challenging because of the particular underlying anatomy. We present the case of a right-sided transvenous implantation of a dual-chamber CRT-D device in a patient with situs inversus totalis and mirror image dextrocardia. To facilitate our anatomic orientation and to overcome unusual hand-eye coordination problems, we decided to flip the fluoroscopic image projection by 180° (right-left), creating the optical impression of a "normalized" heart position (levocardia)...
December 2018: Journal of Arrhythmia
Masatsugu Nozoe, Daisuke Yoshida, Daisuke Nagatomo, Nobuhiro Suematsu, Toru Kubota, Masanori Okabe, Yusuke Yamamoto
An 86-year-old woman suffering from repeated methicillin-resistant Staphylococcus aureus (MRSA) bacteremia underwent percutaneous lead extraction using an excimer laser. Since negative blood cultures were confirmed three times after lead extraction under intravenous infusion of anti-MRSA drugs, a Micra transcatheter pacing system (Micra TPS) was implanted 7 days after the lead extraction. Although infusion of anti-MRSA drugs was continued for 5 weeks, MRSA was isolated in four separate samples of blood cultures 3 weeks after the discontinuation of the anti-MRSA therapy...
December 2018: Journal of Arrhythmia
Yoshinori Nakamura, Hiroshi Sohara, Minoru Ihara
A 78-year-old woman with drug-resistant persistent atrial fibrillation was referred for catheter ablation by HotBalloon. All pulmonary veins were successfully ablated by the HotBalloon. During the additional roof ablation by the HotBalloon, sudden hemoptysis developed. It was observed that a guidewire advanced far distal to the left superior pulmonary vein (LSPV) branch. The pulmonary vein angiography demonstrated LSPV branch injury. After activated clotting time control, the hemoptysis disappeared spontaneously...
December 2018: Journal of Arrhythmia
Songyun Chu, Eivind Solheim, Jian Chen, Per Ivar Hoff, Peter Schuster
The Chiari networks are reticulated fibers of embryological remnant venous valves in the right atrium. In patients with this congenital variation, manipulation of diagnostic catheters can be difficult, and there is a substantial risk of entrapment during electrophysiological studies. We report a case of successful retraction of a diagnostic catheter entangled in the Chiari network with the use of a lead extraction tool during a scheduled atrial fibrillation ablation. Rescheduled cryoablation was performed without complication and provided a good outcome...
December 2018: Journal of Arrhythmia
Shunji Seki, Erika Yamashita, Kazuyuki Tanoue, Norihito Nuruki, Masahiro Sonoda, Seiko Ohno, Hatsue Ishibashi-Ueda, Yuji Tanaka, Masao Yoshinaga
We present two cases of biopsy-proven hypertrophic cardiomyopathy (HCM). Both cases showed abnormal electrocardiographic (ECG) findings more than 8 years before diagnosis. A 16-year-old healthy male experienced a rescued cardiac arrest. Another male adolescent showed abnormal Q wave and thickened ventricular wall at 15 years old. Retrospective analyses of ECGs performed at 6 years old indicated abnormal ECG findings. However, the diagnosis was normal because no ventricular wall thickening was present in echocardiography...
December 2018: Journal of Arrhythmia
Tomiya Yasumasu
T-wave morphology changes are linked to dispersion of ventricular repolarization. I encountered an 80-year-old man on hemodialysis manifesting momentary giant T-waves and QT prolongation on the 12-lead electrocardiogram, soon after initiating mechanical ventilation because of hypercapnic respiratory failure. A computed tomography of the brain showed no acute cerebrovascular accidents. An echocardiogram showed no left ventricular asynergy. Mechanisms that may be responsible for this phenomenon are discussed...
December 2018: Journal of Arrhythmia
Theerawat Korkerdsup, Tachapong Ngarmukos, Somnuek Sungkanuparph, Angsana Phuphuakrat
Background: Despite the long experience of cardiac implantable electronic device (CIED) implantation in Thailand, epidemiology of CIED infection in Thailand has never been studied. Methods: A retrospective cohort study was conducted at the cardiac referral center in Thailand to investigate incidence of CIED infection and causative organisms between October 2002 and December 2017. A matched case-control study was performed to determine the factors associated with CIED infection...
December 2018: Journal of Arrhythmia
Serhat Emre Senturk, Yahya Kemal Icen, Ayşe Selcan Koc, Yurdaer Donmez, Ahmet Oytun Baykan, İlker Unal, Hilmi Erdem Sumbul, Mevlüt Koc
Background: In this study, we aimed to evaluate the coronary sinus (CS) morphology with three-dimensional transthoracic echocardiography (3D-TTE) in patients with supraventricular tachycardia (SVT) who underwent electrophysiological study (EPS). Methods: This cross-sectional study was conducted with 187 patients who underwent EPS between November 2016 and April 2017. Patients were divided into three groups: atrioventricular nodal reentrant tachycardia (AVNRT) (n = 72), non-AVNRT SVT (n = 58), and normal EPS (n = 57)...
December 2018: Journal of Arrhythmia
Hai Deng, Alena Shantsila, Pi Guo, Xianzhang Zhan, Xianhong Fang, Hongtao Liao, Yang Liu, Wei Wei, Lu Fu, Shulin Wu, Yumei Xue, Gregory Y H Lip
Background: Biomarkers have been related to the arrhythmia recurrence following catheter ablation (CA) of atrial fibrillation (AF). We hypothesized that concurrent measurement of several biomarkers would additively improve their predictive value. Methods: One thousand four hundred and ten consecutive AF patients (68% male; 57.2 ± 11.6 years) undergoing CA were enrolled. Baseline characteristics, serum B type brain natriuretic peptide (BNP) and high sensitivity C reactive protein (hsCRP), estimated glomerular filtration rate (eGFR), ablation parameters, arrhythmia data at discharge, 1, 3, 6, and then every 6 months post CA were collected...
December 2018: Journal of Arrhythmia
Koyuru Monno, Yasuo Okumura, Yuki Saito, Yoshihiro Aizawa, Koichi Nagashima, Masaru Arai, Ryuta Watanabe, Yuji Wakamatsu, Naoto Otsuka, Shunichi Yoda, Takafumi Hiro, Ichiro Watanabe, Atsushi Hirayama
Background: Metabolic syndrome/epicardial adipose tissue (EAT) plays an important role in atrial fibrillation (AF). Although reverse atrial remodeling (RAR) often occurs after AF ablation, the effects of EAT on RAR remain unknown. Methods: Study subjects were 104 patients in whom transthoracic echocardiography (TTE) was performed before AF ablation and 3, 6, and 12 months afterward. EAT was assessed in terms of its thickness adjacent to the right ventricular anterior wall in the TTE parasternal view...
December 2018: Journal of Arrhythmia
Munish Kannabhiran, Usman Mustafa, Madan Acharya, Nelson Telles, Brackett Alexandria, Pratap Reddy, Paari Dominic
Defibrillation threshold (DFT) testing has been an integral part of implantable cardioverter-defibrillator (ICD) implantation to confirm appropriate sensing of ventricular fibrillation and to establish an adequate safety margin for defibrillation. However, there is a lack of evidence regarding benefits of routine DFT testing. Therefore, we performed a meta-analysis to assess its mortality benefit. We searched MEDLINE for studies comparing mortality outcomes in ICD recipients who underwent DFT testing to those who did not...
December 2018: Journal of Arrhythmia
Gary Tse, Mengqi Gong, Christien Ka Hou Li, Keith Sai Kit Leung, Stamatis Georgopoulos, George Bazoukis, Konstantinos P Letsas, Abhishek C Sawant, Giacomo Mugnai, Martin C S Wong, Gan Xin Yan, Pedro Brugada, Gian-Battista Chierchia, Carlo de Asmundis, Adrian Baranchuk, Tong Liu
Background: Brugada syndrome is an ion channelopathy that predisposes affected subjects to ventricular tachycardia/fibrillation (VT/VF), potentially leading to sudden cardiac death (SCD). Tpeak -Tend intervals, (Tpeak -Tend )/QT ratio and Tpeak -Tend dispersion have been proposed for risk stratification, but their predictive values in Brugada syndrome have been challenged recently. Methods: A systematic review and meta-analysis was conducted to examine their values in predicting arrhythmic and mortality outcomes in Brugada Syndrome...
December 2018: Journal of Arrhythmia
Katsunori Okajima, Tomoyuki Nakanishi, Hirotoshi Ichibori, Takeaki Shirai, Makoto Kadotani, Hiroki Shimizu, Yoshio Onishi, Kohei Yamashiro
A 51-year-old male with dextrocardia and situs inversus underwent catheter ablation for paroxysmal atrial fibrillation. Because the procedure through the trans-septal approach was impossible due to the inferior vena cava continuity with azygos vein, we performed pulmonary vein isolation using magnetic navigation system through the retrograde trans-aortic approach. Superior and inferior left-sided and superior right-sided pulmonary veins could be isolated which was confirmed by the ablation catheter. The patient was free from atrial fibrillation episode at the 12 months follow-up except only one palpitation episode lasting nearly 12 hours at 9 months after the ablation...
October 2018: Journal of Arrhythmia
Yuichi Hori, Shiro Nakahara, Naoki Nishiyama, Reiko Fukuda, Noritaka Toratani, Yoshihiko Sakai, Isao Taguchi
A 60-year-old male experienced an inappropriate shock from an implantable cardioverter-defibrillator (ICD) because of oversensing of pectoral myopotentials. Battery depletion was also observed, and a generator change was performed. A single-chamber ICD (VENTAK PRIZM II 1860) was changed to a new ICD (INCEPTA VR F161). The myopotentials were clearly eliminated by the difference in the band pass filter (PRIZM; 21-171 Hz, INCEPTA; 20-85 Hz), but unfortunately, new noise was documented 4 years later. The utility of the bandpass filter for preventing oversensing of myopotentials was observed, but the limitation of its use for long-term follow-up was also indicated...
October 2018: Journal of Arrhythmia
Takatsugu Kajiyama, Hitoshi Hachiya, Yoshito Iesaka
An 18-year-old man without organic heart disease underwent catheter ablation for frequent monomorphic ventricular ectopic beats(VEBs). The origin of the VEB was presumed located on the left coronary cusp(LCC) regarding his electrocardiography. Local activation in the right ventricular outflow tract was not so early. On the LCC, four different prepotentials were obtained by slight relocation of the catheter. Finally, on the site with positive discrete prepotential recorded on the distal electrodes, an application of radiofrequency current immediately eliminated the VEB...
October 2018: Journal of Arrhythmia
Hiroki Konishi, Koji Fukuzawa, Shumpei Mori, Kunihiko Kiuchi, Ken-Ichi Hirata
A 69-year-old man, who had undergone surgery for mitral and tricuspid regurgitation with the Maze procedure for paroxysmal atrial fibrillation, was admitted with an episode of syncope due to sick sinus syndrome. Three days after implantation of a dual-chamber pacemaker (Accent MRI™, St. Jude Medical Inc.,), ventricular pacing on T-wave was recorded multiple times. St. Jude Medical Inc. pacemakers have a unique additional algorithm, called premature ventricular contraction response, related to preventing pacemaker-mediated tachycardia...
October 2018: Journal of Arrhythmia
Amanda Quattrocelli, Janet Lang, Andrew Davis, Andreas Pflaumer
Background: Supraventricular tachycardia is a group of rhythm disturbances that affect 1 in 300-1200 Australian children annually. The differentiation of supraventricular tachycardia (SVT) symptoms and age of onset according to their subtype is not well understood in the pediatric population. Most studies rely on ECG criteria only to characterize the subtype of the SVT, which is not applicable to all subtypes. The purpose of this study was to identify the symptoms and ages of onset of SVT subtypes, and to analyze whether ethnicity or severity correlated with the SVT subtype confirmed in an invasive Electrophysiology (EP) study...
October 2018: Journal of Arrhythmia
Pattara Rattanawong, Tanawan Riangwiwat, Pakawat Chongsathidkiet, Wasawat Vutthikraivit, Nath Limpruttidham, Narut Prasitlumkum, Napatt Kanjanahattakij, Chanavuth Kanitsoraphan
Background: Vasovagal syncope (VVS) is defined by transient loss of consciousness with spontaneous rapid recovery. Recently, a closed-loop stimulation pacing system (CLS) has shown superior effectiveness to conventional pacing in refractory VVS. However, systematic review and meta-analysis has not been performed. We assessed the impact of CLS implantation and reduction in recurrent VVS events by a systematic review and a meta-analysis. Methods: We comprehensively searched the databases of MEDLINE and EMBASE from inception to September 2017...
October 2018: Journal of Arrhythmia
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