QT dispersion: problems of methodology and clinical significance.

abstract：INTRODUCTION:Idiopathic ventricular tachycardia (VT) originating from the left ventricular outflow tract (LVOT) is rare. Previously reported were two cases of LVOT tachycardia which were treated with radiofrequency (RF) catheter ablation through endocardial aortomitral continuity. We report here a case of a repetitive ...

journal_title：Journal of cardiovascular electrophysiology

authors： Shimoike E,Ohnishi Y,Ueda N,Maruyama T,Kaji Y

更新日期：1999-07-01 00:00:00

abstract：UNLABELLED:Atrial Defibrillator. INTRODUCTION:The atrial defibrillator empowers patients to cardiovert themselves from atrial arrhythmias at a time that is socially and physically acceptable, thereby preventing hospitalization. The long-term psychosocial effects of repeated use of the patient-activated atrial defibril...

journal_title：Journal of cardiovascular electrophysiology

authors： Mitchell AR,Spurrell PA,Boodhoo L,Sulke N

更新日期：2003-08-01 00:00:00

abstract：INTRODUCTION:Outflow tract ventricular arrhythmia (OTVA) can be complicated to target for ablation when originating from either the periaortic or pulmonary valve (PV) region. Both sites may present with a small R wave in lead V1. However, the utility of lead I in distinguishing these arrhythmia locations is unknown. M...

journal_title：Journal of cardiovascular electrophysiology

authors： Ebrille E,Chandra VM,Syed F,Del Carpio Munoz F,Nanda S,Hai JJ,Cha YM,Friedman PA,Hammill SC,Munger TM,Venkatachalam KL,Packer DL,Asirvatham SJ

更新日期：2014-04-01 00:00:00

abstract：:A 70-year-old man with a single-chamber implantable cardioverter defibrillator (ICD) placed for ventricular tachycardia presented with syncope. He was found to have ventricular flutter/fibrillation with capacitor charge time in excess of 1 minute before defibrillation. The excessive charge time was secondary to ICD ca...

journal_title：Journal of cardiovascular electrophysiology

authors： Panchal VR,Groh WJ

更新日期：2001-09-01 00:00:00

abstract：UNLABELLED:Lesion dimension of cryoablation. BACKGROUND:Transvenous catheter cryoablation is a novel technique for treating cardiac arrhythmias. However, the relative importance of temporal application parameters on lesion dimension and clinical efficacy has not been studied. METHODS AND RESULTS:We investigated the e...

journal_title：Journal of cardiovascular electrophysiology

authors： Tse HF,Ripley KL,Lee KL,Siu CW,Van Vleet JF,Pelkey WL,Lau CP

更新日期：2005-02-01 00:00:00

abstract：INTRODUCTION:Pacing is believed to prevent atrial fibrillation by reducing atrial activation time. Exact correlation between P wave duration (PWD) on surface ECG and endocardial atrial activation time is still unexplored. METHODS AND RESULTS:In 15 patients without structural heart disease (9 women, age 45 +/- 14 years...

journal_title：Journal of cardiovascular electrophysiology

authors： Gozolits S,Fischer G,Berger T,Hanser F,Abou-Harb M,Tilg B,Pachinger O,Hintringer F,Roithinger FX

更新日期：2002-12-01 00:00:00

abstract：INTRODUCTION:Outflow tract ventricular arrhythmias (OT VAs) are common and catheter ablation is an effective treatment option. We sought to investigate the relationship between age-related anatomic aortic root changes and QRS morphology during left ventricular outflow tract (LVOT) pace-mapping using cardiac magnetic re...

journal_title：Journal of cardiovascular electrophysiology

authors： Maeda S,Chik WW,Han Y,Liang JJ,Squara F,Arkles JS,Sadek MM,Santangeli P,Frankel DS,Zado ES,Takebayashi S,Dixit S,Callans DJ,Marchlinski FE,Lin D

更新日期：2015-09-01 00:00:00

abstract：INTRODUCTION:Significant species-, tissue-, and age-dependent differences have been described for the L-type calcium current (ICa). Therefore, extrapolation of data obtained from the many animal models to human cardiac physiology is difficult. In this study, we have characterized the voltage-dependent properties of ICa...

journal_title：Journal of cardiovascular electrophysiology

authors： Cohen NM,Lederer WJ

更新日期：1993-08-01 00:00:00

abstract：:Atrial fibrillation (AF) is a common clinical problem, particularly in the elderly and in patients with organic heart disease. AF generally is classified into paroxysmal and chronic forms. Chronic AF can be the end result of paroxysmal AF in about 30% of patients. Paroxysmal AF can be defined as attacks of arrhythmia ...

journal_title：Journal of cardiovascular electrophysiology

authors： Lévy S

更新日期：1998-08-01 00:00:00

abstract：BACKGROUND:The optimal recording technique of the electrogram voltage for detecting abnormal atrial tissue remains unclear. The aim of this study was to compare the impact of various recording techniques on the electrogram voltage after the delivery of ablation therapy in the human right atrium (RA). MATERIAL AND METH...

journal_title：Journal of cardiovascular electrophysiology

authors： Lin YJ,Tai CT,Lo LW,Udyavar AR,Chang SL,Wongcharoen W,Tuan TC,Hu YF,Chiang SJ,Chen YJ,Chen SA

更新日期：2007-06-01 00:00:00

abstract：INTRODUCTION:Risk factors of embolic stroke (ES) after atrial fibrillation (AF) ablation have not been fully elucidated especially among the Asian subjects, particularly regarding epicardial adipose tissue (EAT) in cardiac imaging. We aimed to assess the incidence of ES during a long-term follow-up period after AF abla...

journal_title：Journal of cardiovascular electrophysiology

authors： Ahn J,Shin SY,Shim J,Kim YH,Han SJ,Choi EK,Oh S,Shin JY,Choe JC,Park JS,Lee HW,Oh JH,Choi JH,Lee HC,Cha KS,Hong TJ,Lip GYH,Lim HE

更新日期：2019-11-01 00:00:00

abstract：INTRODUCTION:The objective of this study was to determine whether the effect of isoproterenol (Iso) to increase L-type Ca2+ current [I(Ca(L))] and action potential duration (APD) was potentiated in ventricular myocytes following termination of an exposure of these cells to acetylcholine (ACh), and whether this potentia...

journal_title：Journal of cardiovascular electrophysiology

authors： Song Y,Shryock JC,Belardinelli L

更新日期：1998-07-01 00:00:00

abstract：UNLABELLED:Electrical Activity and RhoA in the Embryo. INTRODUCTION:Myocardium at the venous pole (sinus venosus) of the heart has gained clinical interest as arrhythmias can be initiated from this area. During development, sinus venosus myocardium is incorporated to the primary heart tube and expresses different mark...

journal_title：Journal of cardiovascular electrophysiology

authors： Vicente-Steijn R,Kolditz DP,Mahtab EA,Askar SF,Bax NA,VAN DER Graaf LM,Wisse LJ,Passier R,Pijnappels DA,Schalij MJ,Poelmann RE,Gittenberger-DE Groot AC,Jongbloed MR

更新日期：2010-11-01 00:00:00

abstract：:Due to expanding clinical indications and an aging society there has been an increase in the use of implantable pacemakers. At the same time, due to increased diagnostic yield over other imaging modalities and the absence of ionizing radiation, there has been a surge in demand for magnetic resonance imaging (MRI) asse...

journal_title：Journal of cardiovascular electrophysiology

authors： Ahmed FZ,Morris GM,Allen S,Khattar R,Mamas M,Zaidi A

更新日期：2013-09-01 00:00:00

abstract：INTRODUCTION:Repolarization dynamics, reflecting adaptation of QT to changing heart rate, is considered a marker of unfavorable prognosis in patients with heart diseases. We aimed to evaluate the prognostic value of QT/RR slope in predicting total mortality (TM) and sudden death (SD) in patients with congestive heart f...

journal_title：Journal of cardiovascular electrophysiology

authors： Cygankiewicz I,Zareba W,Vazquez R,Almendral J,Bayes-Genis A,Fiol M,Valdes M,Macaya C,Gonzalez-Juanatey JR,Cinca J,Bayes de Luna A,MUSIC Investigators.

更新日期：2008-10-01 00:00:00

abstract：INTRODUCTION:To assess a potential relationship between sex and outcome in recipients of an implantable cardioverter-defibrillator (ICD). METHODS AND RESULTS:All 1471 ICD recipients between 2000 and 2015 were sex-related analyzed with the following outcome parameters: overall survival (OS), the occurrence of inappropr...

journal_title：Journal of cardiovascular electrophysiology

authors： Burger AL,Schmidinger H,Ristl R,Pezawas T

更新日期：2019-09-01 00:00:00

abstract：INTRODUCTION:Treatment refractory ventricular arrhythmias (VAs) are often driven and exacerbated by heightened sympathetic tone. We aim to conduct a systematic review and meta-analysis of published studies of a temporary percutaneous stellate ganglion block (SGB) on VA burden and defibrillation episodes in patients wit...

journal_title：Journal of cardiovascular electrophysiology

authors： Fudim M,Boortz-Marx R,Ganesh A,Waldron NH,Qadri YJ,Patel CB,Milano CA,Sun AY,Mathew JP,Piccini JP

更新日期：2017-12-01 00:00:00

abstract：BACKGROUND:Noninducibility of sustained atrial fibrillation (AF) after pulmonary vein isolation (PVI) has been shown to be associated with a better clinical outcome. We evaluated the role of clinical variables that could predict noninducibility of sustained AF after PVI. METHODS AND RESULTS:Data were collected prospec...

journal_title：Journal of cardiovascular electrophysiology

authors： Rotter M,Jaïs P,Garrigue S,Sanders P,Hocini M,Hsu LF,Takahashi Y,Rostock T,Sacher F,Clementy J,Haïssaguerre M

更新日期：2005-12-01 00:00:00

abstract：INTRODUCTION:Ventricular pacing may add additional risk for right ventricular (RV) dysfunction in patients with transposition of the great arteries (TGA) and atrial redirection. The aim of our study was to evaluate the effects of long-term nonsystemic ventricular pacing on cardiac function, dyssynchrony, and clinical p...

journal_title：Journal of cardiovascular electrophysiology

authors： Horovitz A,De Guillebon M,van Geldorp IE,Bordachar P,Roubertie F,Iriart X,Douard H,Haissaguerre M,Thambo JB

更新日期：2012-07-01 00:00:00

abstract：INTRODUCTION:Bundle branch reentry ventricular tachycardia (VT) is usually amenable to treatment with radiofrequency ablation. Different QRS morphologies during VT are possible when anterograde ventricular activation is over the left bundle branch. Manifestations of this reentrant tachycardia with more than one QRS mor...

journal_title：Journal of cardiovascular electrophysiology

authors： Wang CW,Sterba R,Tchou P

更新日期：1997-06-01 00:00:00

abstract：BACKGROUND:AF can be induced by RAP or ISO in >85% of patients with PAF. METHODS:ISO was administered in escalating doses of 5, 10, 15, and 20 microg/min in 112 patients (age = 56 +/- 13 years) with PAF before radiofrequency catheter ablation. AF was inducible in 97 of 112 patients (87%) at a mean dose of 15 +/- 5 mic...

journal_title：Journal of cardiovascular electrophysiology

authors： Crawford T,Chugh A,Good E,Yoshida K,Jongnarangsin K,Ebinger M,Pelosi F Jr,Bogun F,Morady F,Oral H

更新日期：2010-01-01 00:00:00

abstract：INTRODUCTION:The aims of this study were to investigate: (1) the effect of supplementing the culture medium on preservation of L-type calcium channel current (1Ca,L) in adult rabbit ventricular myocytes cultured for 4 days; and (2) preservation of the ICa,L response in cultured myocytes to the beta-adrenergic agonist i...

journal_title：Journal of cardiovascular electrophysiology

authors： Mitcheson JS,Hancox JC,Levi AJ

更新日期：1997-09-01 00:00:00

abstract：BACKGROUND:Despite growing attention to performance and quality measures, national standards for reporting of outcomes after all electrophysiology (EP) procedures have not yet been developed. We sought to characterize the incidence and timing of adverse events up to 30 days after EP procedures at a tertiary academic me...

journal_title：Journal of cardiovascular electrophysiology

authors： Hussain SK,Eddy MM,Moorman L,Malhotra R,Darby AE,Bilchick K,Mason P,Mangrum MJ,Dimarco JP,Ferguson JD

更新日期：2015-05-01 00:00:00

abstract：:About one fifth of all deaths occur suddenly and unexpectedly, often as the first manifestation of heart disease. Several tests have been developed during the past 2 decades for risk stratification of such an event, but only a minority of victims can be identified as being at high risk before sudden death occurs. Impr...

journal_title：Journal of cardiovascular electrophysiology

authors： Wellens HJ,Gorgels AP,de Munter H

更新日期：2003-09-01 00:00:00

abstract：INTRODUCTION:Ablation of atrial vagal ganglia has been associated with improved pulmonary vein isolation (PVI) outcomes. Disruption of vagal reflexes results in heart rate (HR) increase. We investigated the association between HR change after PVI and freedom from atrial fibrillation (AF) at 1 year. METHODS AND RESULTS...

journal_title：Journal of cardiovascular electrophysiology

authors： Goff ZD,Laczay B,Yenokyan G,Sivasambu B,Sinha SK,Marine JE,Ashikaga H,Berger RD,Akhtar T,Spragg DD,Calkins H

更新日期：2019-12-01 00:00:00

abstract：INTRODUCTION:Biventricular pacing improves functional status in the majority of patients with drug-refractory heart failure, dilated cardiomyopathy, and interventricular conduction delay. The aim of this study was to analyze the baseline clinical and functional data of a cohort of patients implanted with a biventricula...

journal_title：Journal of cardiovascular electrophysiology

authors： Lunati M,Paolucci M,Oliva F,Frigerio M,Magenta G,Cattafi G,Vecchi R,Vicini I,Cavaglià S

更新日期：2002-01-01 00:00:00

abstract：INTRODUCTION:This study sought to determine if the acute procedural outcome of ventricular tachycardia (VT) substrate ablation is associated with a mortality benefit in patients with implantable cardioverter-defibrillators (ICD). METHODS AND RESULTS:A total of 195 ICD recipients (65 ± 11years) with ischemic or nonisch...

journal_title：Journal of cardiovascular electrophysiology

authors： Komatsu Y,Maury P,Sacher F,Khairy P,Daly M,Lim HS,Zellerhoff S,Jesel L,Rollin A,Duparc A,Mondoly P,Aurillac-Lavignolle V,Shah A,Denis A,Cochet H,Derval N,Hocini M,Haïssaguerre M,Jaïs P

更新日期：2015-11-01 00:00:00

abstract：INTRODUCTION:Understanding whether vasovagal syncope is a lifelong disorder might shed insight into its physiology and affect management strategies. Accordingly, we determined the age of the first syncopal spell in adult patients who sought care for syncope. METHODS AND RESULTS:Patients were 42 +/- 18 years old with 6...

journal_title：Journal of cardiovascular electrophysiology

authors： Sheldon RS,Sheldon AG,Connolly SJ,Morillo CA,Klingenheben T,Krahn AD,Koshman ML,Ritchie D,Investigators of the Syncope Symptom Study and the Prevention of Syncope Trial.

更新日期：2006-01-01 00:00:00

abstract：BACKGROUND:We prospectively compared the efficacy, safety, and quality of life (QoL) impact of catheter ablation versus antiarrhythmic drugs (AAD) in elderly patients with persistent atrial fibrillation (AF). METHODS AND RESULTS:Four hundred and twelve consecutive patients, aged ≥ 70 years, underwent ablation (Group A...

journal_title：Journal of cardiovascular electrophysiology

authors： Blandino A,Toso E,Scaglione M,Anselmino M,Ferraris F,Sardi D,Battaglia A,Gaita F

更新日期：2013-07-01 00:00:00

abstract：INTRODUCTION:The low frequency of spontaneous premature atrial contractions (PACs) may be an impediment to mapping and ablation of atrial fibrillation (AF). It has been shown that PACs following external or internal cardioversion of AF can initiate AF. If this method could reproducibly induce PACs from the same locatio...

journal_title：Journal of cardiovascular electrophysiology

authors： Sra J,Zaidi ST,Krum D,Georgakopoulos N,Ahmad A,Akhtar M

更新日期：2001-12-01 00:00:00