Abstract:
INTRODUCTION:Isolation of the left atrial appendage (LAA) is often performed in persistent atrial fibrillation (AF). Propagation patterns in the LAA during AF remain to be elucidated. We sought to characterize propagation patterns in the LAA during AF in persistent AF. METHODS:Persistent AF patients undergoing catheter ablation were studied. Pulmonary vein isolation (PVI) was performed during continuous AF. If AF was not terminated by PVI, bi-atrial mapping was performed using a multi-electrode catheter during AF. Maps were collected at each site for 30 seconds and analyzed offline with a novel software, CARTOFINDER. This software made automatic determinations of whether activation was focal or rotational. The left atrium (LA) was divided into five regions, of which the LAA was one, and the right atrium (RA) into three. RESULTS:Eighty patients were studied (62 ± 10 years, 65 males). On average, 9.6 ± 2.2 and 4.1 ± 1.2 maps were created in the LA and RA, respectively. The LAA was mapped in 70 patients, resulting in 85 maps. In the LAA, activation was identified as focal more often than rotational (64 [91%] vs 10 [14%] patients, P < .001), seven patients displayed both. The number of focal activation events was greatest in the LAA (28.5 events/30 seconds [interquartile range, 15-54]) of the eight atrial regions. During focal activation, sites designated as earliest activation frequently covered a wide area, rather than being localized to a discrete site (5.4 ± 3.1 electrodes). CONCLUSIONS:The results of this study suggest that focal activation is a major mechanism underlying the arrhythmogenicity of the LAA in persistent AF.
journal_name
J Cardiovasc Electrophysioljournal_title
Journal of cardiovascular electrophysiologyauthors
Takahashi Y,Akiyoshi K,Sekigawa M,Yagishita A,Yamamoto T,Maeda S,Kawabata M,Goya M,Hirao K,Sasano Tdoi
10.1111/jce.14278subject
Has Abstractpub_date
2020-01-01 00:00:00pages
112-118issue
1eissn
1045-3873issn
1540-8167journal_volume
31pub_type
杂志文章abstract:INTRODUCTION:Little is known about the incidence and timing of reactive pericardial collections developing after left atrial catheter ablation (LACA), and when and if transthoracic echocardiography (TTE) should be performed routinely in these patients postprocedure. METHODS AND RESULTS:Two hundred consecutive LACA pat...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2010.02008.x
更新日期:2011-07-01 00:00:00
abstract::A patient with drug-refractory paroxysmal atrial fibrillation associated with rapid ventricular rate underwent biatrial pacemaker implantation. During elective replacement of the pacemaker, a significant voltage- and frequency-dependent decrease in ventricular rate was achieved by high-frequency electrical stimulation...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1046/j.1540-8167.2004.03488.x
更新日期:2004-05-01 00:00:00
abstract:INTRODUCTION:Mapping procedures to identify triggers of atrial fibrillation from pulmonary veins (PVs) are not well established. We sought to determine the value of multipolar recordings from the coronary sinus (CS) and crista terminalis (CT) for identifying the origin of paced and atrial premature depolarizations (APD...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 临床试验,杂志文章
doi:10.1046/j.1540-8167.2000.01300.x
更新日期:2000-12-01 00:00:00
abstract::After pulmonary vein isolation for the treatment of atrial fibrillation, clinical arrhythmia recurrence is often a result of vein reconnection. By selectively visualizing scarred tissue, delayed enhancement magnetic resonance imaging may provide for a noninvasive means to identify gaps in radiofrequency ablation lines...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2007.01055.x
更新日期:2008-04-01 00:00:00
abstract:BACKGROUND:Atrial fibrillation (AF) is common in abdominal solid organ transplant recipients and a cause of morbidity and mortality in this population. However, the outcomes of catheter ablation (CA) in transplant recipients with AF remain unclear. This study aimed to elucidate the outcomes of CA in renal and hepatic t...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.14775
更新日期:2020-12-01 00:00:00
abstract::In patients with Wolff-Parkinson-White syndrome, right anteroseptal accessory pathways are uncommon and run from the atrium to the ventricle in close anatomic proximity to the normal AV conduction system. Radiofrequency catheter ablation is the first-line therapy for elimination of these accessory pathways. Although t...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1046/j.1540-8167.2001.01415.x
更新日期:2001-12-01 00:00:00
abstract:INTRODUCTION:We report the case of a 36-year-old patient with a longstanding history of paroxysmal tachycardia. METHODS AND RESULTS:During the electrophysiological study, the H-V interval was prolonged in sinus rhythm, and a second potential (H'') with distal to proximal activation pattern was recorded in the region o...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2006.00468.x
更新日期:2006-08-01 00:00:00
abstract:INTRODUCTION:Patients with nonischemic cardiomyopathy (NICM) and ventricular tachycardia (VT) usually have basal-lateral scar in the left ventricle (LV). We sought to determine electrocardiogram (ECG) characteristics that may help identify NICM patients with basal-lateral scar and VT. METHODS AND RESULTS:Phase I, stud...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2011.02129.x
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Successful anticoagulation is critical for stroke prevention in adults with atrial fibrillation (AF). Anticoagulation satisfaction is a key indicator of treatment success. While physical, cognitive, and psychosocial limitations are common in elderly AF patients, their associations with anticoagulation satisf...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章,多中心研究
doi:10.1111/jce.14176
更新日期:2019-11-01 00:00:00
abstract:INTRODUCTION:Frequent premature ventricular contractions (PVCs) can cause cardiomyopathy (CM). Postextrasystolic potentiation (PESP) and irregularity have been in implicated as triggers of PVC-CM. Because both phenomena can also be found in premature atrial contractions (PACs), it is speculated that frequent PACs have ...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.14067
更新日期:2019-10-01 00:00:00
abstract:INTRODUCTION:Heart failure patients with left ventricular assist devices (LVADs) are at risk for infection. Cardiac implantable electronic devices (CIEDs) are commonly present in these patients. The course of infections in patients with an LVAD and a CIED is not well described. METHODS AND RESULTS:We identified 6 pati...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.12461
更新日期:2014-11-01 00:00:00
abstract::A 39-year-old woman with no structural heart disease and frequent episodes of sudden onset palpitations was referred for the electrophysiological study. During the study, a slightly irregular narrow QRS tachycardia with AV dissociation was repeatedly induced and spontaneously terminated. Apparently, irregular cycles a...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.12026
更新日期:2013-03-01 00:00:00
abstract:INTRODUCTION:This study was designed to analyze dynamic changes in autonomic tone preceding the onset of sustained atrial arrhythmias in patients with focal atrial fibrillation (AF) to determine why patients with frequent discharge from the arrhythmogenic foci develop sustained AF. METHODS AND RESULTS:Holter tapes fro...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1046/j.1540-8167.2001.00285.x
更新日期:2001-03-01 00:00:00
abstract::The cavotricuspid isthmus (CVTI) is the well-established location of atrial tissue critical for the maintenance of typical atrial flutter. The CVTI begins at the electrically inert tricuspid valve and includes the atrial myocardium up to the inferior vena cava (IVC). In this article, we discuss relevant CVTI and right...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章,评审
doi:10.1111/j.1540-8167.2008.01344.x
更新日期:2009-01-01 00:00:00
abstract:INTRODUCTION:The autonomic nervous system richly innervates the peri-AV nodal region and may be activated during radiofrequency (RF) ablation for AV nodal reentrant tachycardia, resulting in the generation of junctional tachycardia. The purpose of this prospective study was to determine the role of the autonomic nervou...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.1999.tb00642.x
更新日期:1999-01-01 00:00:00
abstract:INTRODUCTION:Cardiac resynchronization therapy (CRT) or biventricular pacing (BVP) is becoming an important treatment option in patients with severe congestive heart failure (CHF) and electrical dyssynchrony. When combined with implantable cardioverter-defibrillator (ICD) therapy, cardiac resynchronization therapy with...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2008.01122.x
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND:Epidemiological evidence has shown an association between ambient fine particulate matter (PM2.5) exposure and cardiovascular mortality. Increased ventricular premature complex (VPC) burden can cause left ventricular dilatation and dysfunction. We aimed to investigate the relationship between acute PM2.5 exp...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.13829
更新日期:2019-04-01 00:00:00
abstract:INTRODUCTION:Brugada syndrome (BrS) is an inherited disorder that predisposes some subjects to sudden cardiac death (SCD). It is not well established which BrS patients are at risk of severe arrhythmias. Our aim was to study whether standard 12-lead electrocardiogram (ECG) would give useful information for this purpose...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2007.01050.x
更新日期:2008-04-01 00:00:00
abstract::It is well established that impulse propagation in cardiac tissue is determined by the interaction between active membrane properties and the passive electrical characteristics of the network formed by individual myocytes. In the past, the intricate microarchitecture of intact cardiac tissue and the limited spatial re...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章,评审
doi:10.1111/j.1540-8167.1995.tb00428.x
更新日期:1995-07-01 00:00:00
abstract:INTRODUCTION:Acute myocardial ischemia, which opens K(ATP) channel, is associated with shortened action potential duration (APD) but prolonged QT interval. This discrepancy has not been adequately explained. We hypothesize that the duration of intracellular calcium (Ca(i)) transient (DCaT) may play a role in determinin...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2005.40811.x
更新日期:2005-08-01 00:00:00
abstract:INTRODUCTION:Despite the importance of neurogenic initiation of rapid firing from pulmonary veins (PVs), the mechanism of autonomic modulation of electrophysiological properties of the PV myocardium to form a substrate for atrial arrhythmia remains poorly understood. METHODS AND RESULTS:A 2-microelectrode technique wa...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.12738
更新日期:2015-10-01 00:00:00
abstract::We report a case of initial transient success during ablation for typical AV nodal reentrant tachycardia utilizing traditional right-sided approaches, followed by recurrence of the same tachycardia and an ultimately successful ablation on the posteromedial mitral annulus. ...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1046/j.1540-8167.2000.01281.x
更新日期:2000-11-01 00:00:00
abstract:AIMS:T-wave alternans (TWA) is an indicator of vulnerability to ventricular arrhythmias and is useful for predicting sudden cardiac death (SCD) in patients with various structural heart diseases. We evaluated whether high levels of time-domain TWA on ambulatory ECG (AECG) are associated with a history of ventricular fi...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.12441
更新日期:2014-09-01 00:00:00
abstract:INTRODUCTION:Recently, a medical advisory was issued regarding the Riata and Riata ST silicone endocardial defibrillator leads (St. Jude Medical, Sylmar, CA, USA) addressing the issue of conductor cables extruding in an "inside-out" fashion from the main body of the lead. However, little data exist to guide our managem...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2012.02378.x
更新日期:2012-11-01 00:00:00
abstract::Atrial flutter is due to large single reentrant loops, typically oriented around the caval veins and a line of functional conduction block in between. These reentrant circuits can easily be terminated by properly timed extra beats colliding in the antidromic direction with the reentrant orthodromic wavefront and being...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章,评审
doi:
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:Ablation of atrial tachycardia (AT) that occurs after cardiac surgery or prior ablation often requires complex lesion sets. In combination with the pre-existing atrial scar, these lesion sets may result in inadvertent intra-atrial conduction block. This study reports the phenomenon of incidental isolation of...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.14037
更新日期:2019-10-01 00:00:00
abstract:BACKGROUND:Neurally mediated syncope (NMS) is a common disorder that is triggered by orthostatic stress. The circulatory adjustments to orthostatic stress occur just prior to a sudden loss of consciousness. NMS prediction would protect patients from falls or accidents. METHODS AND RESULTS:Based on simultaneously recor...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/j.1540-8167.2011.02030.x
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Electrical connections between ipsilateral pulmonary veins (PVs) have been reported histologically and electrophysiologically. This study investigated the impact of electrical connections between ipsilateral PVs on PV isolation using second-generation cryoballoons (CB2-PVI). METHODS:Five hundred eleven atri...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.13731
更新日期:2019-01-01 00:00:00
abstract:INTRODUCTION:Large animal models of progressive atrial fibrosis would provide an attractive platform to study relationship between structural and electrical remodeling in atrial fibrillation (AF). Here we established a new transgenic goat model of AF with cardiac specific overexpression of TGF-β1 and investigated the c...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1111/jce.13049
更新日期:2016-10-01 00:00:00
abstract:UNLABELLED:Amiodarone/Silymarin Treatment for Sustained Atrial Flutter. INTRODUCTION:Because amiodarone generates free radicals that may mediate amiodarone's toxicity, simultaneous therapy with an antioxidant might be beneficial if the antioxidant did not impair amiodarone's antiarrhythmic action. We tested whether si...
journal_title:Journal of cardiovascular electrophysiology
pub_type: 杂志文章
doi:10.1046/j.1540-8167.2003.02446.x
更新日期:2003-08-01 00:00:00