Ten-year experience in atenolol use and exercise evaluation in children with genetically proven long QT syndrome
Conclusions Atenolol is an effective treatment for genetically proven LQT1 and LQT2 children and adolescents, with good tolerability. In LQT1 patients, QTc intervals at 2–3min into the recovery phase of exercise were significantly prolonged, particularly in patients with transmembrane mutations. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - October 13, 2017 Category: Cardiology Source Type: research

Influence of proton pump inhibitors on blood dabigatran concentrations in Japanese patients with non-valvular atrial fibrillation
Conclusions PPI administration significantly decreased the trough and peak DCs in patients with NVAF. Therefore, when prescribing PPIs for patients with NVAF in a clinical setting, the possibility that the bioavailability of dabigatran may decrease should be considered. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - October 13, 2017 Category: Cardiology Source Type: research

Marshall bundle reentrant atrial tachycardia after the Cox-Maze IV procedure: The last barrier of the conduction pathway between the coronary sinus and left atrium
Publication date: Available online 12 October 2017 Source:Journal of Arrhythmia Author(s): Yasushi Wakabayashi, Takekuni Hayashi, Yoshitaka Sugawara, Takeshi Mitsuhashi, Hideo Fujita, Shin-ichi Momomura A 74-year-old woman who developed atrial tachycardia following the Cox-Maze IV procedure underwent catheter ablation. The reentrant circuit included the coronary sinus (CS), Marshall bundle (MB), distal MB-left atrial (LA) connection, and anterolateral mitral annulus. The distal MB-LA connection was the last barrier in the conduction pathway between the CS and the left atrium. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - October 13, 2017 Category: Cardiology Source Type: research

Extracardiac compression of the inferolateral branch of the coronary vein by the descending aorta in a patient with dilated cardiomyopathy
We present the case of a 69-year-old woman with dilated cardiomyopathy who underwent cardiac resynchronization therapy. Preoperative electrocardiography-gated contrast-enhanced computed tomography revealed the inferolateral wall of her significantly dilated and leftward-rotated heart was close to the descending aorta, and the descending aorta compressed the sandwiched inferolateral branch of the coronary vein. Retrograde coronary venography performed at the time of device implantation confirmed focal stenosis of the inferolateral branch of the coronary vein. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - October 11, 2017 Category: Cardiology Source Type: research

Reviewer List 2016
Publication date: October 2017 Source:Journal of Arrhythmia, Volume 33, Issue 5 (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - October 7, 2017 Category: Cardiology Source Type: research

Syncope in patients with inherited arrhythmias
We describe syncope associated with three typical inherited arrhythmias and discuss various diagnostic modalities. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - October 7, 2017 Category: Cardiology Source Type: research

Complex regional pain syndrome induced by pacemaker implantation for sick sinus syndrome
Publication date: Available online 2 October 2017 Source:Journal of Arrhythmia Author(s): Megumi Kisanuki, Kazumasa Fujita, Shohei Moriyama, Kei Irie, Chiharu Yosida, Mitsuhiro Fukata, Takeshi Arita, Taku Yokoyama, Keita Odashiro, Toru Maruyama, Koichi Akashi A 53-year-old woman reported burning pain, muscle weakness, and dysesthesia of the left arm 2 months after permanent pacemaker insertion in the ipsilateral side for the treatment of sick sinus syndrome. Complex regional pain syndrome (CRPS) induced by pacemaker implantation was diagnosed. In 2017, her pulse generator became exhausted and was exchanged carefully to av...
Source: Journal of Arrhythmia - October 3, 2017 Category: Cardiology Source Type: research

Ventricular arrhythmias in patients with Takotsubo syndrome
This article summarizes the prevalence, underlying mechanisms, therapeutic strategies, and prognostic implications of ventricular arrhythmias in TTS. Furthermore, the need for implantable cardioverter-defibrillators is discussed in view of the transient character of the disease. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Ventricular arrhythmias in non-ischemic cardiomyopathy
Publication date: Available online 6 September 2017 Source:Journal of Arrhythmia Author(s): Fa-Po Chung, Chin-Yu Lin, Yenn-Jiang Lin, Shih-Lin Chang, Li-Wei Lo, Yu-Feng Hu, Ta-Chuan Tuan, Tze-Fan Chao, Jo-Nan Liao, Yao-Ting Chang, Ting-Yung Chang, Chung-Hsing Lin, Abigail Louise D. Te, Shinya Yamada, Shih-Ann Chen Non-ischemic cardiomyopathies (NICMs) are composed of variable disease entities, including primary and secondary cardiomyopathies. Determining the etiology of NICM provides pivotal roles of not only the understanding of the individual pathogenesis, but also the clinical management, such as risk stratification, p...
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

The details of an unusual “ghost” after transvenous lead extraction: Three-dimensional computed tomography analysis
Publication date: Available online 6 September 2017 Source:Journal of Arrhythmia Author(s): Kunihiko Kiuchi, Koji Fukuzawa, Shumpei Mori, Tatsuya Nishii, Kensuke Matsumoto, Hirotoshi Ichibori, Takashi Yamada Transvenous lead extraction (TLE) is performed to prevent deaths in patients with device infections. Intracardiac masses detected by echocardiography, i.e., “ghosts,” are reported in 8% of patients after a TLE in retrospective studies and in 14% in prospective studies. We herein describe a case with unusual ghosts after a TLE. Three-dimensional computed tomography (3DCT) is useful for revealing all the det...
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Role of head-up tilt table testing in patients with syncope or transient loss of consciousness
Publication date: Available online 6 September 2017 Source:Journal of Arrhythmia Author(s): Toshiyuki Furukawa The tilt table test (TTT) is a useful method for the management of reflex syncope. However, the TTT is incomplete and has several problems. The indications for this test are established using guidelines. The TTT is not suitable for all syncopal patients. It is currently unclear (1) When should the TTT be used, (2) for which types of patients TTT should be performed, and (3) does the TTT provide useful information to guide indication for pacing therapy for reflex syncope. The answers to these questions appear in r...
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Transesophageal echocardiographic thromboembolic risk is associated with smoking status in patients with atrial fibrillation
Conclusions TEE findings indicated that smoking status could be associated with thromboembolic risk in patients with AF. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Cardiac resynchronization therapy via transvenous approach in a 2-year-old boy with a complete atrioventricular block after a tetralogy of Fallot repair
Publication date: Available online 9 September 2017 Source:Journal of Arrhythmia Author(s): Hisaaki Aoki, Misugi Emi, Noboru Inamura, Shigemitsu Iwai, Futoshi Kayatani Cardiac resychronization therapy (CRT) was performed via transvenous approach in a 2-year-old boy with a tetralogy of Fallot and postoperative severe heart failure, and complete atrioventricular block treated with a dual-chamber pacemaker. Epicardial leads were unavailable because of mediastinitis and the presence of severe bilateral pleural effusions requiring continuous drainage. There were no procedural complications. Biventricular pacing was significant...
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Clinical implications of serum adiponectin on progression of atrial fibrillation
Conclusions Our data indicated that adiponectin was partially responsible for progression of AF, but the correlation between adiponectin levels and AF recurrence was not significant. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Uninterrupted dabigatran is safer than warfarin in patients undergoing ablation for atrial fibrillation
Publication date: Available online 20 September 2017 Source:Journal of Arrhythmia Author(s): Michael Spartalis, Eleni Tzatzaki MD PhD, Nikolaos I. Nikiteas MD MSc PhD, Eleftherios Spartalis MD MSc PhD (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Radiofrequency ablation of ventricular premature contraction originating from a native coronary cusp after transcatheter aortic valve replacement
We describe a case of radiofrequency ablation of ventricular premature contraction (VPC) originating from the left ventricular outflow tract after transcatheter aortic valve replacement. The VPC origin was the native aortic valve annulus between the left and right coronary cusps. Radiofrequency ablation was successfully performed by manipulating the ablation catheter from the gap between the sinotubular junction and implanted valve. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Value of adenosine test to reveal dormant conduction or adenosine-induced atrial fibrillation after pulmonary vein isolation
Conclusions Adenosine test after PVI to confirm the absence of dormant conduction and triggers initiating AF is beneficial to improve the outcomes after catheter ablation of PAF. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Loss of cardiac resynchronization therapy in a patient with a biventricular implantable cardioverter-defibrillator
Publication date: Available online 30 September 2017 Source:Journal of Arrhythmia Author(s): Mohammad Alasti, Karthikeyan Rangasamy, Stewart Healy, David Adam, Emily Kotschet Here, we discuss the case of a man with a history of ischemic cardiomyopathy and cardiac resynchronization therapy defibrillator implantation, who presented to emergency department with decompensated heart failure due to the loss of resynchronization therapy. The reason for the malfunction was left ventricle upper rate interval lock-in due to inappropriate programming of the device. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 30, 2017 Category: Cardiology Source Type: research

Cardiac troponin T as a predictor of cardiac death in patients with left ventricular dysfunction
Conclusion The cTnT levels in a stable state were associated with cardiac death in patients with LV dysfunction, even in those with non-ischemic diseases. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - September 1, 2017 Category: Cardiology Source Type: research

Syncope and the risk of sudden cardiac death: Evaluation, management, and prevention
Publication date: Available online 1 September 2017 Source:Journal of Arrhythmia Author(s): Ryan J. Koene, Wayne O. Adkisson, David G. Benditt Syncope is a clinical syndrome defined as a relatively brief self-limited transient loss of consciousness (TLOC) caused by a period of inadequate cerebral nutrient flow. Most often the trigger is an abrupt drop of systemic blood pressure. True syncope must be distinguished from other common non-syncope conditions in which real or apparent TLOC may occur such as seizures, concussions, or accidental falls. The causes of syncope are diverse, but in most instances, are relatively benig...
Source: Journal of Arrhythmia - September 1, 2017 Category: Cardiology Source Type: research

Atriofascicular Mahaim with Ebstein anomaly: A case report
We report a case of a 7-year-old girl with atriofascicular Mahaim (AFM) pathway concomitant with Ebstein's anomaly. The QRS wave showed left bundle branch block pattern on electrocardiogram. Holter electrocardiogram showed prolongation of the PR interval and QRS morphological change during sinus tachycardia. An electrophysiological study demonstrated that the distal His potential appeared earlier than the proximal His potential, which suggested retrograde His conduction toward the atrioventricular node. Conduction from the Mahaim fiber to the His bundle was faster than that from the atrioventricular node towards the His bu...
Source: Journal of Arrhythmia - August 9, 2017 Category: Cardiology Source Type: research

The electrical circuit of a hemodynamically unstable and recurrent ventricular tachycardia diagnosed in 35s with the Rhythmia mapping system
This report shows the possibility of the new ultra-high density mapping system in a specific ischemic VT patient. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - August 2, 2017 Category: Cardiology Source Type: research

CHADS2 and modified CHA2DS2-VASc scores for the prediction of congestive heart failure in patients with nonvalvular atrial fibrillation
Conclusion Calculation of the CHADS2 and mCHA2DS2-VASc scores in order to evaluate the risk of systemic thromboembolism was useful to predict the onset of CHF, but not all-cause death, in patients with NVAF. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - August 1, 2017 Category: Cardiology Source Type: research

Three cases of vasospastic angina following catheter ablation of atrial fibrillation
Publication date: Available online 31 July 2017 Source:Journal of Arrhythmia Author(s): Yoshihiko Kagawa, Eitaro Fujii, Satoshi Fujita, Norikazu Yamada, Masaaki Ito Pulmonary vein isolation is an effective treatment for patients with atrial fibrillation (AF).Although vasospastic angina (VSA) is not a common complication after ablation of AF, we report 3 cases of VSA following ablation of persistent AF. Two of the 3 patients felt chest pain following pulmonary vein isolation, and complex fractionated atrial electrogram ablations were performed. ST elevation in the inferior leads and atrioventricular block occurred because ...
Source: Journal of Arrhythmia - August 1, 2017 Category: Cardiology Source Type: research

Management of patients with long QT syndrome
Publication date: Available online 31 July 2017 Source:Journal of Arrhythmia Author(s): Serkan Cay, Ozcan Ozeke, Firat Ozcan, Serhat Koca, Aysenur Pac, Dursun Aras, Serkan Topaloglu (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - August 1, 2017 Category: Cardiology Source Type: research

The influence of residual apixaban on bleeding complications during and after catheter ablation of atrial fibrillation
Conclusions Low residual plasma apixaban is associated with a higher incidence of bleeding complications during/after AF ablation, potentially because of a greater heparin requirement during AF ablation. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - July 28, 2017 Category: Cardiology Source Type: research

Sudden failure of ventricular pacing and recovery in a patient with cardiac sarcoidosis
Publication date: Available online 26 July 2017 Source:Journal of Arrhythmia Author(s): Yosuke Terui, Akihiro Nakamura, Hideaki Endo, Takahide Kadosaka, Takashi Nakata, Tasuku Watanabe, Kenjiro Sato, Masanori Kanazawa, Masateru Kondo, Tohru Takahashi, Eiji Nozaki A 76-year-old woman with sarcoidosis who had an implantable pacemaker for complete atrioventricular block was admitted with syncope. Electrocardiogram revealed ventricular pacing failure, and a marked rise in the ventricular pacing threshold. 18F-Fluorodeoxyglucose positron emission tomography (FDG-PET) indicated increased uptake of FDG in the ventricular septum....
Source: Journal of Arrhythmia - July 26, 2017 Category: Cardiology Source Type: research

Minimally invasive, pericardial implantable cardioverter-defibrillator placement in a young child
We report the successful minimally invasive placement of a pericardial implantable cardioverter-defibrillator (ICD) in a 16-kg child. A transvenous ICD dual coil was advanced through a small subxiphoid incision and screwed into the oblique sinus pericardium under fluoroscopic guidance. An additional sense-pace lead was sutured onto the right ventricular apex, and the generator was placed in the upper abdominal wall through the same incision. Threshold testing demonstrated successful defibrillation at 15J. After implantation, the patient had two episodes of appropriate shock for ventricular fibrillation. The ICD system cont...
Source: Journal of Arrhythmia - July 26, 2017 Category: Cardiology Source Type: research

A new mapping method to estimate exit sites of ventricular arrhythmias using intracardiac echocardiography and M-mode for catheter ablation
Conclusions Contraction mapping could help determine the local activation time without the delivery of a catheter to the mapping points. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - July 11, 2017 Category: Cardiology Source Type: research

Indications for suboptimal low-dose direct oral anticoagulants for non-valvular atrial fibrillation patients
Conclusions With good adherence, the clinical course associated with DOACs is comparatively good. In the future, suboptimal low-dose DOAC therapy may serve as an appropriate choice for some patients with a high risk of stroke and bleeding. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - July 1, 2017 Category: Cardiology Source Type: research

Left atrial remodeling: Regional differences between paroxysmal and persistent atrial fibrillation
Conclusion PAF and PerAF seem to be characterized by differences in the regional voltage in the LA and PVs. The LA structural remodeling of PerAF may initiate from the right PVs and their antra and LA septum, roof, and posterior wall. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - June 30, 2017 Category: Cardiology Source Type: research

Landiolol suppression of electrical storm of torsades de pointes in patients with congenital long-QT syndrome type 2 and myocardial ischemia
Publication date: Available online 27 June 2017 Source:Journal of Arrhythmia Author(s): Ryota Kitajima, Takeshi Aiba, Tsukasa Kamakura, Kohei Ishibashi, Mitsuru Wada, Yuko Inoue, Koji Miyamoto, Hideo Okamura, Takashi Noda, Satoshi Nagase, Yu Kataoka, Yasuhide Asaumi, Teruo Noguchi, Satoshi Yasuda, Kengo Kusano A 76-year-old man who had been diagnosed with long-QT syndrome type 2 had frequent syncopal attacks. The electrocardiogram was monitored, and frequent torsades de pointes (TdP) was detected despite administration of conventional medications: oral propranolol, verapamil, intravenous magnesium sulfate, verapamil, and ...
Source: Journal of Arrhythmia - June 27, 2017 Category: Cardiology Source Type: research

2017 consensus of the Asia Pacific Heart Rhythm Society on stroke prevention in atrial fibrillation
Publication date: Available online 27 June 2017 Source:Journal of Arrhythmia Author(s): Chern-En Chiang, Ken Okumura, Shu Zhang, Tze-Fan Chao, Chung-Wah Siu, Toon Wei Lim, Anil Saxena, Yoshihide Takahashi, Wee Siong Teo Atrial fibrillation (AF) is the most common sustained arrhythmia, causing a 2-fold increase in mortality and a 5-fold increase in stroke. The Asian population is rapidly aging, and in 2050, the estimated population with AF will reach 72 million, of whom 2.9 million may suffer from AF-associated stroke. Therefore, stroke prevention in AF is an urgent issue in Asia. Many innovative advances in the management...
Source: Journal of Arrhythmia - June 27, 2017 Category: Cardiology Source Type: research

Radiofrequency catheter ablation is effective for atrial fibrillation patients with hypertrophic cardiomyopathy by decreasing left atrial pressure
Conclusions The LA pressure in the HCM group decreased immediately after AF RFCA. Patients with HCM and drug-refractory AF may benefit from RFCA. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - June 24, 2017 Category: Cardiology Source Type: research

Ambulatory electrocardiogram monitoring devices for evaluating transient loss of consciousness or other related symptoms
In this report, based on our clinical experience, we review the usefulness of ambulatory ECG monitoring devices, especially of ELR, for evaluating T-LOC and other potentially arrhythmia-related symptoms. Specifically, we focus on the use of ELR and ICM for evaluating Japanese patients with T-LOC. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - June 1, 2017 Category: Cardiology Source Type: research

Association between serum soluble urokinase-type plasminogen activator receptor and atrial fibrillation
Conclusions Serum suPAR was associated with AF, particularly NPAF, as demonstrated by multivariate logistic regression analysis. Whether suPAR promotes or maintains AF should be investigated in further studies. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 31, 2017 Category: Cardiology Source Type: research

Long-Term Survival of Implantable Cardioverter Defibrillator Recipients with End-Stage Renal Disease
Conclusion ESRD patients are at significantly increased risk of mortality as compared with a non-dialysis cohort. While the majority of these patients survive more than one year post-diagnosis, the three-year mortality is high (43%). Randomized studies addressing the benefits of ICDs in ESRD patients are needed to better define their value for primary prevention of SCD. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 31, 2017 Category: Cardiology Source Type: research

Arrhythmogenic Left Atrial Roof Vein
Publication date: Available online 25 May 2017 Source:Journal of Arrhythmia Author(s): Hidehira Fukaya, Shinichi Niwano, Hironori Nakamura, Tazuru Igarashi, Tamami Fujiishi, Naruya Ishizue, Akira Satoh, Jun Kishihara, Junya Ako A seventy year-old male was referred to our hospital to undergo radiofrequency catheter ablation (RFCA) for drug-refractory paroxysmal atrial fibrillation (AF). Pre-operative three-dimensional computed tomography revealed a unique left atrial (LA) roof vein. Electrophysiological findings showed expansion of the myocardial sleeve and local firing in the LA roof vein. We performed isolation of this a...
Source: Journal of Arrhythmia - May 25, 2017 Category: Cardiology Source Type: research

Reflex syncope: Diagnosis and treatment
Publication date: Available online 17 May 2017 Source:Journal of Arrhythmia Author(s): Richard Sutton For the diagnosis of reflex syncope, diligent history-building with the patient and a witness is required. In the Emergency Department (ED), the assessment of syncope is a challenge which may be addressed by an ED Observation Unit or by a referral to a Syncope Unit. Hospital admission is necessary for those with life-threatening cardiac conditions although risk stratification remains an unsolved problem. Other patients may be investigated with less urgency by carotid sinus massage (>40 years), tilt testing, and ele...
Source: Journal of Arrhythmia - May 18, 2017 Category: Cardiology Source Type: research

Driving restrictions for patients with reflex syncope
Publication date: Available online 17 May 2017 Source:Journal of Arrhythmia Author(s): Masataka Sumiyoshi Reflex syncope is the most common form of syncope that occurs while driving. The 2014 revision of Japanese Road Traffic Laws placed stricter driving restrictions, along with some associated legal penalties, on individuals with recurrent syncope. “Recurrent syncope” is defined as the occurrence of more than two episodes of syncope over a period of 5 years. No restrictions are recommended for private drivers unless they experience syncope without a reliable prodrome while driving or sitting. For commercial d...
Source: Journal of Arrhythmia - May 18, 2017 Category: Cardiology Source Type: research

Paroxysmal atrial fibrillation recurrences and quality of life in symptomatic patients: A crossover study of flecainide and pilsicainide
Conclusions This study found no difference in AF frequency or QOL between symptomatic paroxysmal AF patients who received flecainide or pilsicainide. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 18, 2017 Category: Cardiology Source Type: research

2017 HRS/EHRA/ECAS/APHRS/SOLAECE Expert Consensus Statement on Catheter and Surgical Ablation of Atrial Fibrillation
Publication date: Available online 12 May 2017 Source:Journal of Arrhythmia Author(s): Hugh Calkins, Gerhard Hindricks, Riccardo Cappato, Young-Hoon Kim, Eduardo B. Saad, Luis Aguinaga, Joseph G. Akar, Vinay Badhwar, Josep Brugada, John Camm, Peng-Sheng Chen, Shih-Ann Chen, Mina K. Chung, Jens Cosedis Nielsen, Anne B. Curtis, D. Wyn Davies, John D. Day, André d'Avila, N.M.S. (Natasja) de Groot, Luigi Di Biase, Mattias Duytschaever, James R. Edgerton, Kenneth A. Ellenbogen, Patrick T. Ellinor, Sabine Ernst, Guilherme Fenelon, Edward P. Gerstenfeld, David E. Haines, Michel Haissaguerre, Robert H. Helm, Elaine Hylek, ...
Source: Journal of Arrhythmia - May 13, 2017 Category: Cardiology Source Type: research

Brain magnetic resonance imaging examination in a patient with non-magnetic resonance conditional pacemaker
Publication date: Available online 13 May 2017 Source:Journal of Arrhythmia Author(s): Toshiko Nakai, Toshiaki Sato, Kyoko Soejima, Yusuke Takamine, Mitsuru Watanabe, Kazutaka Kobayashi, Hideki Oshima, Chikashi Fukaya, Yasuo Okumura, Kimie Ohkubo, Satoshi Kunimoto, Ichiro Watanabe, Atsuo Yoshino, Atsushi Hirayama Clinical dilemmas arise when patients with a non-magnetic resonance (MR) conditional pacemaker are required to undergo magnetic resonance imaging (MRI). We encountered a pacemaker patient with debilitating non-motor symptoms of Parkinson's disease, who required an MRI prior to deep brain stimulation (DBS) surgery...
Source: Journal of Arrhythmia - May 13, 2017 Category: Cardiology Source Type: research

Incidence and predictors of pericardial effusion as an early complication of catheter ablation for atrial fibrillation: The Japanese Catheter Ablation Registry of Atrial Fibrillation (J-CARAF)
Conclusions Critical PE occurred in 1% of AF ablation procedures in Japan. Our results suggest that 3-D imaging system use independently reduces the frequency of PE. DOACs in the setting of catheter ablation of AF seemed to be non-inferior to warfarin in terms of safety and effectiveness. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 12, 2017 Category: Cardiology Source Type: research

Concealed conduction of premature ventricular complexes resulting in AV nodal block
Publication date: Available online 12 May 2017 Source:Journal of Arrhythmia Author(s): Ying Zi Oh, Vern Hsen Tan, Kelvin CK Wong (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 12, 2017 Category: Cardiology Source Type: research

Refractory ventricular tachycardia caused by inflow cannula mechanical injury in a patient with left ventricular assist device: Catheter ablation and pathological findings
We report on a case of a successfully ablated mechanical VT. After VT recurrence, heart transplantation took place. Pathologic observations were consistent with direct tissue injury and inflammation, eventually contributing to persisting arrhythmias. Radiofrequency catheter ablation can be a safe and effective option to treat arrhythmias caused by inflow cannula interference in the short term, although a high recurrence rate is expected. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 11, 2017 Category: Cardiology Source Type: research

Use of implantable and external loop recorders in syncope with unknown causes
Publication date: Available online 11 May 2017 Source:Journal of Arrhythmia Author(s): Kaoru Tanno The gold standard for diagnosing syncope is to elucidate the symptom-electrocardiogram (ECG) correlation. The ECG recordings during syncope allow physicians to either confirm or exclude an arrhythmia as the mechanism of syncope. Many studies have investigated the use of internal loop recorder (ILR), while few studies have used external loop recorder (ELR) for patients with unexplained syncope. The aim of this review is to clarify the clinical usefulness of ILR and ELR in the diagnosis and management of patients with unexplai...
Source: Journal of Arrhythmia - May 11, 2017 Category: Cardiology Source Type: research

Life-threatening arrhythmias leading to syncope in patients with vasospastic angina
Publication date: Available online 10 May 2017 Source:Journal of Arrhythmia Author(s): Mitsuhiro Nishizaki The coronary artery diseases (CAD) that can lead to the occurrence of a syncopal attack include acute coronary syndrome, vasospastic angina, effort angina, and prior myocardial infarction. The possible mechanisms considered to lead to syncope in patients with CAD are pump failure, tachyarrhythmia, bradycardia, and vagal stimulation. Coronary artery spasm, in particular, is occasionally observed in patients with unexplained syncope in Japan. Life-threatening arrhythmias are among the most serious complications of an i...
Source: Journal of Arrhythmia - May 10, 2017 Category: Cardiology Source Type: research

Clinical benefits of deep sedation with a supraglottic airway while monitoring the bispectral index during catheter ablation of atrial fibrillation
Conclusions These results may demonstrate the clinical benefits of deep sedation with SGAs while monitoring the BIS index without any hypoxia during PVAI in patients with AF. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 8, 2017 Category: Cardiology Source Type: research

Syncope and paroxysmal atrioventricular block
Publication date: Available online 8 May 2017 Source:Journal of Arrhythmia Author(s): Milena Aste, Michele Brignole Current literature reveals three types of paroxysmal atrioventricular block (AVB) that can cause syncope: Intrinsic paroxysmal atrioventricular block is due to an intrinsic disease of the AV conduction system; this type of “cardiac syncope” is also called Stokes-Adams attack; Extrinsic vagal paroxysmal atrioventricular block is linked to the effect of the parasympathetic nervous system on cardiac conduction and is one of the mechanisms involved in “reflex syncope.” Extrinsic idiopathi...
Source: Journal of Arrhythmia - May 8, 2017 Category: Cardiology Source Type: research