Abstract:
BACKGROUND:Approximately 30% of all accessory pathways (APs) are located in the septal area, and understanding the electrocardiographic and electrophysiologic of these APs is crucial for safe and effective ablation of these pathways. OBJECTIVE:In this study, the electrocardiographic and electrophysiologic characteristics of anteroseptal, midseptal, and posteroseptal APs were investigated in detail to elucidate unique electrical properties of APs in each location. METHODS:From April 2002 to October 2006, a total of 120 patients with a septal AP-mediated tachycardia were enrolled in the study. A detailed examination including electrocardiographic analysis and electrophysiologic study was performed in all patients. RESULTS:A total of 120 patients, including 98 patients with posteroseptal APs, 14 patients with anteroseptal APs, and 8 patients with midseptal APs, were studied. The anteroseptal APs could be differentiated from the midseptal APs by the 2 or more positive delta waves in inferior leads, whereas there is significant overlap in electrocardiographic features of midseptal and posteroseptal APs. The mean tachycardia cycle length was significantly shorter in patients with midseptal AP compared with those with anteroseptal and posteroseptal APs (284 +/- 49 ms vs 342 +/- 46 ms vs 350 +/- 68 ms, P = .03). The AH interval during tachycardia was also shorter in patients with midseptal APs (149 +/- 16 ms vs 200 +/- 51 ms vs 168 +/- 48 ms, P = .04). The patients with posteroseptal AP had a significantly higher incidence of atrial fibrillation (35%) than those with either midseptal (12%) or anteroseptal (14%) APs (P = .04). The patients with posteroseptal APs also had a significantly shorter antegrade effective refractory period of the AP (276 +/- 54 ms) than those with either midseptal (313 +/- 71 ms) or anteroseptal (325 +/- 61) APs (P = .036). CONCLUSION:Electrocardiographic analysis is a reliable method for differentiation of the anteroseptal from the midseptal APs, whereas the same is not true for the midseptal and posteroseptal APs. Midseptal APs were characterized by faster orthodromic tachycardia, whereas posteroseptal APs had a higher inducibility of atrial fibrillation.
journal_name
Heart Rhythmjournal_title
Heart rhythmauthors
Haghjoo M,Kharazi A,Fazelifar AF,Alizadeh A,Emkanjoo Z,Sadr-Ameli MAdoi
10.1016/j.hrthm.2007.07.009subject
Has Abstractpub_date
2007-11-01 00:00:00pages
1411-9issue
11eissn
1547-5271issn
1556-3871pii
S1547-5271(07)00713-8journal_volume
4pub_type
杂志文章相关文献
HEART RHYTHM文献大全abstract:BACKGROUND:Cardiac resynchronization therapy (CRT) is increasingly recognized for its ability to reduce ventricular tachyarrhythmias, possibly associated with left ventricular reverse remodeling, but the role of the right ventricle (RV) in this process has not been examined. OBJECTIVE:The purpose of this study was to ...
journal_title:Heart rhythm
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.hrthm.2013.07.029
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND:Transvenous left ventricular (LV) lead placement for cardiac resynchronization therapy-defibrillator (CRT-D) delivery is unsuccessful in 8% to 10% of cases. These patients might benefit from an epicardial lead. However, data on long-term epicardial lead performance are scarce. Furthermore, extracting an epic...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2014.11.004
更新日期:2015-03-01 00:00:00
abstract:BACKGROUND:Complete circumferential antral ablation may not be necessary for successful pulmonary vein (PV) isolation in patients with paroxysmal atrial fibrillation (AF). OBJECTIVE:We examined the feasibility of a noncircumferential approach limited to segments of the antra required for PV-atrial conduction. METHODS...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2010.09.069
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Hyperthyroidism is a known reversible cause of atrial fibrillation (AF). However, some patients remain in AF despite restoration of euthyroid status. OBJECTIVE:The purpose of this study was to compare the electrophysiologic characteristics and long-term ablation outcome in AF patients with and without histo...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2015.06.004
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:Despite isolated reports of Brugada syndrome (BrS) in the inferior or lateral leads, the prevalence and prognostic value of ST elevation in the peripheral electrocardiographic (ECG) leads in patients with BrS remain poorly known. OBJECTIVE:To study the prevalence, characteristics, and prognostic value of ty...
journal_title:Heart rhythm
pub_type: 杂志文章,多中心研究
doi:10.1016/j.hrthm.2013.03.001
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:The R582C mutation is one of many Long-QT Syndrome type 2 (LQT2)-causing mutations localized to the human ether-a-go-go related gene (hERG) channel's S5-P linker subdomain, yet its specific mechanism of dysfunction has not been examined. OBJECTIVE:This study sought to characterize the biophysical properties...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2011.02.035
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND:More sustained forms of atrial fibrillation (AF) are less amenable to treatment and associated with worse outcomes, but the incidence and predictors of AF progression are not well defined. OBJECTIVE:The purpose of this study was to perform a systematic review and meta-analysis assessing the incidence and pr...
journal_title:Heart rhythm
pub_type: 杂志文章,meta分析
doi:10.1016/j.hrthm.2018.10.022
更新日期:2019-04-01 00:00:00
abstract:BACKGROUND:The vein of Marshall (VOM) is a left atrial (LA) vein that contains autonomic innervation and triggers of AF. Its location coincides with areas usually ablated during pulmonary vein (PV) antral isolation (PVAI). OBJECTIVE:This study sought to delineate the safety and ablative effects of ethanol infusion in ...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2009.07.036
更新日期:2009-11-01 00:00:00
abstract::The underlying mechanisms and temporal course of complete heart block (CHB) after blunt cardiac injuries (BCIs) are poorly understood, and a systematic analysis of available data is lacking. In this systematic review, PubMed was searched for publications of reported cases of CHB-BCI analyzing clinical findings, electr...
journal_title:Heart rhythm
pub_type: 杂志文章,评审
doi:10.1016/j.hrthm.2017.05.040
更新日期:2017-10-01 00:00:00
abstract:BACKGROUND:Data on inappropriate implantable cardioverter-defibrillator (ICD) therapy and effects of programming by heart rate are lacking. OBJECTIVE:We aimed to characterize inappropriate ICD therapy and assess the effects of novel programming by heart rate. METHODS:Incidence and causes of inappropriate therapy by h...
journal_title:Heart rhythm
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.hrthm.2015.05.021
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:Termination of persistent atrial fibrillation (AF) is a valuable ablation endpoint but is difficult to anticipate. We evaluated whether temporal and spatial indices of AF regularization predict intraprocedural AF termination and outcome. OBJECTIVE:The purpose of this study was to test whether temporospatial...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2011.05.008
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Prediction of sustained ventricular tachycardia (VT)/ventricular fibrillation (VF) could help to guide preventive interventions in at-risk patients. The QRST integral (∫QT) reflects intrinsic repolarization properties. OBJECTIVE:The objective of this study was to determine whether intracardiac ∫QT predicts ...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2011.07.029
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Focal impulse and rotor modulation (FIRM) was based on the premise that atrial fibrillation (AF) is sustained by rotors that are sufficiently stable to be eliminated by targeted ablation. Early experience reported high success as compared to conventional strategies. OBJECTIVE:The purpose of this study was t...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2016.11.008
更新日期:2017-02-01 00:00:00
abstract:BACKGROUND:The Medtronic EnPulse pacemaker incorporates the new atrial capture management (ACM) algorithm to automatically measure atrial capture thresholds and subsequently manage atrial pacing outputs. OBJECTIVES:The purpose of this study was to evaluate the clinical performance of ACM. METHODS:Two hundred patients...
journal_title:Heart rhythm
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/j.hrthm.2005.07.023
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND:Enhanced dispersion of action potential duration (APD) is a major contributor to long QT syndrome (LQTS)-related arrhythmias. OBJECTIVE:To investigate spatial correlations of regional heterogeneities in cardiac repolarization and mechanical function in LQTS. METHODS:Female transgenic LQTS type 2 (LQT2; n =...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2013.07.038
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND:There is increasing evidence that using frequent invasive measures of pressure in patients with heart failure results in improved outcomes compared to traditional measures. Admittance, a measure of volume derived from preexisting defibrillation leads, is proposed as a new technique to monitor cardiac hemodyn...
journal_title:Heart rhythm
pub_type: 临床试验,杂志文章
doi:10.1016/j.hrthm.2017.06.005
更新日期:2017-10-01 00:00:00
abstract:BACKGROUND:Premature ventricular complex (PVC) ablation has been shown to improve left ventricular ejection fraction (LVEF) and New York Heart Association functional class in patients with left ventricular dysfunction. Both are considered key variables in predicting risk of sudden cardiac death. OBJECTIVE:The objectiv...
journal_title:Heart rhythm
pub_type: 杂志文章,多中心研究
doi:10.1016/j.hrthm.2015.09.011
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:Recurrent atrial tachyarrhythmias occur as a result of residual atrial arrhythmogenic substrates after atrial fibrillation (AF) ablation. In patients with AF, electrograms with reduced amplitudes indicate diseased myocardium. OBJECTIVE:The purpose of this study was to investigate the association between the...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2015.12.029
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to evaluate the safety and efficacy of cryoablation in a closed chest canine epicardial ablation model. BACKGROUND:Limitations of radiofrequency energy in the epicardial space warrants investigation of alternative energy sources. METHODS:A linear-tip catheter with a 3-cm freez...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2004.09.022
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:Left atrial (LA) low-voltage areas (LVAs) are frequently observed in patients with atrial fibrillation (AF) and may predict AF recurrence after catheter ablation. OBJECTIVE:The aim of this study was to develop and validate a clinical tool to identify LVAs that are associated with AF recurrence after pulmona...
journal_title:Heart rhythm
pub_type: 杂志文章,多中心研究
doi:10.1016/j.hrthm.2015.07.003
更新日期:2015-11-01 00:00:00
abstract:BACKGROUND:Ventricular tachyarrhythmias are the most common cause of death in patients with repaired tetralogy of Fallot (TOF), but predicting those at risk remains a challenge. An electrophysiology study (EPS) has been proposed to risk stratify patients with TOF. OBJECTIVE:We sought to evaluate a perioperative EPS-gu...
journal_title:Heart rhythm
pub_type: 杂志文章,多中心研究
doi:10.1016/j.hrthm.2018.01.020
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Radiofrequency ablation of epicardial and mid-myocardial ventricular arrhythmias is limited by lesion depth. OBJECTIVE:The purpose of this study was to generate deep mid-interventricular septal (IVS) lesions using high-intensity ultrasound (US) from an endocardial catheter-based approach. METHODS:Irrigated...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2020.12.027
更新日期:2020-12-29 00:00:00
abstract:BACKGROUND:Multiple studies have addressed the importance of anteroseptal scar in patients with nonischemic cardiomyopathy. However, this pattern has never been fully evaluated in patients with prior myocarditis. OBJECTIVE:The purpose of this study was to evaluate whether anteroseptal scar is associated with worse out...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2020.12.016
更新日期:2020-12-24 00:00:00
abstract:BACKGROUND:Initiation of reentrant ventricular tachycardia (VT) involves complex interactions between front and tail of the activation wave. Recent experimental work has identified the time interval between S2 repolarization proximal to a line of functional block and S2 activation at the adjacent distal side as a criti...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2015.04.013
更新日期:2015-07-01 00:00:00
abstract:BACKGROUND:Long QT syndrome type 1 (LQT1) is caused by mutations in KCNQ1, which encodes the α subunit of the slow delayed rectifier potassium current channel. We previously reported that a synonymous mutation, c.1032G>A, p.A344Aspl, in KCNQ1 is most commonly identified in genotyped patients with LQT1 in Japan and the ...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2018.05.028
更新日期:2018-10-01 00:00:00
abstract:BACKGROUND:Electrocardiographic imaging (ECGI) is a novel electrophysiologic imaging modality that may help guide patient selection and lead placement for cardiac resynchronization therapy (CRT). OBJECTIVE:The purpose of this study was to apply noninvasive ECGI to pediatric heart failure patients with congenital heart...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2009.04.017
更新日期:2009-08-01 00:00:00
abstract:BACKGROUND:Obesity and weight gain are established risk factors for atrial fibrillation (AF). OBJECTIVE:The purpose of this study was to investigate whether bodyweight variability is also a risk factor for AF development. METHODS:A nationwide population-based cohort of 8,091,401 adults from the Korean National Health...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2019.09.029
更新日期:2020-03-01 00:00:00
abstract:BACKGROUND:Syncope in Brugada syndrome (BrS) patients is a sign of increased risk for sudden cardiac death and usually is ascribed to cardiac arrhythmias. However, syncope often occurs in the general population, mostly from nonarrhythmic causes (eg, reflex syncope). OBJECTIVE:The purpose of this study was to distingui...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2014.10.014
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND:Catheter ablation for polymorphic ventricular tachycardia and ventricular fibrillation (PMVT/VF) may target triggering premature ventricular contractions (PVCs). Targeting ventricular scar has also been suggested, but data are limited. OBJECTIVE:The purpose of this study was to characterize the electrophysi...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2019.01.032
更新日期:2019-07-01 00:00:00
abstract:BACKGROUND:Although consensus documents on catheter and surgical ablation of atrial fibrillation (AF) suggest a uniform "blanking period" of 3 months, recent evidence suggested that early recurrences of atrial tachyarrhythmias (ERATs) are strongly associated with late recurrences (LRs), especially if ERATs occurred in ...
journal_title:Heart rhythm
pub_type: 杂志文章
doi:10.1016/j.hrthm.2015.12.034
更新日期:2016-04-01 00:00:00