Potential overdiagnosis of long QT syndrome using exercise stress and QT stand testing in children and adolescents with a low probability of disease.

abstract：INTRODUCTION:The advent of signal-averaged ECG (SAECG) systems for P wave analysis has made it important to determine if the use of different filtering techniques in these systems is diagnostically equivalent. METHODS AND RESULTS:Three different high-pass filtering techniques and two cutoff frequency values were used:...

journal_title：Journal of cardiovascular electrophysiology

authors： Valverde ER,Quinteiro RA,Bertran GC,Arini PD,Glenny P,Biagetti MO

更新日期：1998-03-01 00:00:00

abstract：BACKGROUND:Warning symptoms may provide an opportunity to diagnose genetic disorders leading to preventative therapy. We explored the symptom history of patients with apparently unexplained cardiac arrest to determine the frequency of sentinel symptoms. METHODS:Patients with apparently unexplained cardiac arrest and n...

journal_title：Journal of cardiovascular electrophysiology

authors： Krahn AD,Healey JS,Simpson CS,Chauhan VS,Birnie DH,Champagne J,Gardner M,Sanatani S,Chakrabarti S,Yee R,Skanes AC,Leong-Sit P,Ahmad K,Gollob MH,Klein GJ,Gula LJ,Sheldon RS

更新日期：2012-01-01 00:00:00

abstract：INTRODUCTION:Catheter ablation of atrial fibrillation (AF) has been recently shown to have an impact on the outcome of patients with heart failure and reduced LV ejection fraction (LVEF). We aimed to assess patients with reduced LVEF referred to catheter ablation of AF, and the efficacy and safety of this procedure com...

journal_title：Journal of cardiovascular electrophysiology

authors： Providência R,de Asmundis C,Chun J,Chierchia G,Defaye P,Anselme F,Creta A,Lambiase PD,Schmidt B,Chen S,Hunter RJ,Combes S,Honarbakhsh S,Combes N,Sousa MJ,Jebberi Z,Albenque JP,Boveda S

更新日期：2019-08-01 00:00:00

abstract：INTRODUCTION:Recent studies have implicated repolarization lability in the genesis of malignant ventricular arrhythmias. However, few data exist on assessment of temporal QT interval variability and its relation to arrhythmogenesis. We tested the ability of the QT variability index (QTVI), a measure of beat-to-beat QT ...

journal_title：Journal of cardiovascular electrophysiology

authors： Atiga WL,Calkins H,Lawrence JH,Tomaselli GF,Smith JM,Berger RD

更新日期：1998-09-01 00:00:00

abstract：INTRODUCTION:Computational modeling of cardiac arrhythmogenesis and arrhythmia maintenance has made a significant contribution to the understanding of the underlying mechanisms of arrhythmia. We hypothesized that a cardiac model using personalized electro-anatomical parameters could define the underlying ventricular ta...

journal_title：Journal of cardiovascular electrophysiology

authors： Chen Z,Cabrera-Lozoya R,Relan J,Sohal M,Shetty A,Karim R,Delingette H,Gill J,Rhode K,Ayache N,Taggart P,Rinaldi CA,Sermesant M,Razavi R

更新日期：2016-07-01 00:00:00

abstract：:Heart failure is a common debilitating condition for which pharmacologic therapy thus far has provided only partial relief. Despite, and sometimes because of, medical therapy, the overall prognosis remains poor, with high rates of sudden death and death from progressive heart failure. Device-based therapies offer cons...

journal_title：Journal of cardiovascular electrophysiology

authors： Cleland JG,Thackray S,Goodge L,Kaye G,Cooklin M

更新日期：2002-01-01 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：:We describe a case of symptomatic pseudo-AV block due to His-bundle parasystole masquerading as exercise-induced 2:1 AV block. Electrophysiologic study revealed the presence of His-bundle parasystole, and the fluctuation of parasystolic cycle length could be explained by the concept of modulated parasystole. Modulated...

journal_title：Journal of cardiovascular electrophysiology

authors： Kasaoka Y,Ajiki K,Hayami N,Murakawa Y

更新日期：2001-08-01 00:00:00

abstract：:The heart's pacemaker, the sinoatrial node, does not consist of a group of uniform sinoatrial node cells embedded in atrial muscle. Instead, it is a heterogeneous tissue with multiple cell types and a complex structure. Evidence suggests that from the periphery to the center of the sinoatrial node, there is a gradient...

journal_title：Journal of cardiovascular electrophysiology

authors： Boyett MR,Dobrzynski H,Lancaster MK,Jones SA,Honjo H,Kodama I

更新日期：2003-01-01 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：:We report two patients who had isolated atrial fibrillation in the left atrium and regular activation of the entire right atrium. Mapping of the arrhythmia was performed using a 64-electrode basket catheter that was inserted intravenously and deployed in the right and left atria. Both patients manifested a single, sta...

journal_title：Journal of cardiovascular electrophysiology

authors： Ndrepepa G,Zrenner B,Schreieck J,Karch MR,Schneider MA,Schömig A,Schmitt C

更新日期：2000-05-01 00:00:00

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

authors： Kalla M,Rajappan K,Kalra S,Thomas G,Redpath C,Earley MJ,Sporton SC,Schilling RJ

更新日期：2011-07-01 00:00:00

abstract：INTRODUCTION:Patients with cardiac arrhythmias are generally instructed to avoid caffeine intake. A comprehensive evaluation of the electrophysiological effects of caffeine on atrial and ventricular tissues in humans has not previously been performed. METHODS AND RESULTS:Eighty patients (31 men, mean age 49 ± 14 years...

journal_title：Journal of cardiovascular electrophysiology

authors： Lemery R,Pecarskie A,Bernick J,Williams K,Wells GA

更新日期：2015-01-01 00:00:00

abstract：INTRODUCTION:Cardiac resynchronization therapy (CRT) recipients with ischemic cardiomyopathy (ICM) have scar segments that may limit ventricular resynchronization and clinical response. The impact of myocardial viability at the left ventricular (LV) pacing site on CRT response is poorly elucidated. METHODS AND RESULTS...

journal_title：Journal of cardiovascular electrophysiology

authors： Bose A,Kandala J,Upadhyay GA,Riedl L,Ahmado I,Padmanabhan R,Gewirtz H,Mulligan LJ,Singh JP

更新日期：2014-05-01 00:00:00

abstract：INTRODUCTION:Stimulants are the mainstay therapy for attention deficit/hyperactivity disorder (ADHD) and are associated with adrenergic side effects. There are limited data on the clinical course of patients treated for ADHD who have long-QT syndrome (LQTS), for which β-blockade is the goal of therapy. METHODS:LQTS pa...

journal_title：Journal of cardiovascular electrophysiology

authors： Zhang C,Kutyifa V,Moss AJ,McNitt S,Zareba W,Kaufman ES

更新日期：2015-10-01 00:00:00

abstract：INTRODUCTION:Regional dispersions of repolarization (DOR) are arrhythmogenic perturbations that are closely associated with reentry. However, the characteristics of DOR have not been well defined or adequately analyzed because previous algorithms did not take into account spatial heterogeneities of action potential dur...

journal_title：Journal of cardiovascular electrophysiology

authors： Salama G,Kanai AJ,Huang D,Efimov IR,Girouard SD,Rosenbaum DS

更新日期：1998-02-01 00:00:00

abstract：INTRODUCTION:The nature of the atrial substrate thought to contribute toward maintaining atrial fibrillation (AF) outside the pulmonary veins remains poorly defined. Therefore, our objective was to determine whether patients with paroxysmal and persistent AF have an abnormal electroanatomic substrate within the left at...

journal_title：Journal of cardiovascular electrophysiology

authors： Teh AW,Kistler PM,Lee G,Medi C,Heck PM,Spence SJ,Sparks PB,Morton JB,Kalman JM

更新日期：2012-03-01 00:00:00

abstract：INTRODUCTION:Prevention of sudden arrhythmic cardiac death depends on accurate identification of individuals at high risk. Previous studies of signals recorded directly from arrhythmogenic tissue suggested that the predictive value of the signal-averaged ECG could be enhanced by expanded temporal, spectral, and spatial...

journal_title：Journal of cardiovascular electrophysiology

authors： Kavesh NG,Sarang SE,Gold MR

更新日期：2000-02-01 00:00:00

abstract：INTRODUCTION:A functional region of slow conduction located in the inferior right atrium has been postulated to be critical to the induction and maintenance of typical human atrial flutter. We reexamined the potential role of functional conduction delay in the annular isthmus between the tricuspid valve and the inferio...

journal_title：Journal of cardiovascular electrophysiology

authors： Kinder C,Kall J,Kopp D,Rubenstein D,Burke M,Wilber D

更新日期：1997-07-01 00:00:00

abstract：INTRODUCTION:An early afterdepolarization (EAD)-induced triggered beat is thought to precipitate torsade de pointes (TdP) in the long QT syndrome (LQTS). Previous studies demonstrated the development of EAD activity and dispersion of repolarization under LQT2 (reduced I(Kr)) and LQT3 (augmented late I(Na)), but not LQT...

journal_title：Journal of cardiovascular electrophysiology

authors： Burashnikov A,Antzelevitch C

更新日期：2000-04-01 00:00:00

abstract：INTRODUCTION:Early recurrence of atrial fibrillation (AF) after cardioversion may be related to shortening of the atrial effective refractory period (ERP). This study compared the effects of verapamil and ibutilide on AF cycle length (AFCL), atrial ERP, and susceptibility to recurrent AF. METHODS AND RESULTS:In 33 adu...

journal_title：Journal of cardiovascular electrophysiology

authors： Sticherling C,Hsu W,Tada H,Bares AC,Oral H,Pelosi F,Knight BP,Strickberger SA,Morady F

更新日期：2002-02-01 00:00:00

abstract：INTRODUCTION:The current practice of percutaneous subxiphoid needle access to the "healthy" pericardial sac has significant limitations. We sought to examine the feasibility of a novel toolkit designed to improve this procedure. METHODS AND RESULTS:The toolkit included a pericardial access needle and a virtual imaging...

journal_title：Journal of cardiovascular electrophysiology

authors： Ludwig DR,Menon PG,Fill B,Gartner M,Schwartzman D

更新日期：2015-05-01 00:00:00

abstract：BACKGROUND:Although pulmonary vein antrum isolation (PVAI) may cure atrial fibrillation (AF) and improve left atrial (LA) function, the effect of extensive LA ablation on LA function is not well known. OBJECTIVE:To assess the impact of PVAI on LA function remotely postablation. METHODS:Consecutive patients undergoing...

journal_title：Journal of cardiovascular electrophysiology

authors： Verma A,Kilicaslan F,Adams JR,Hao S,Beheiry S,Minor S,Ozduran V,Claude Elayi S,Martin DO,Schweikert RA,Saliba W,Thomas JD,Garcia M,Klein A,Natale A

更新日期：2006-07-01 00:00:00

abstract：INTRODUCTION:Several studies have shown that the fast pathway is more responsive to adenosine than the slow pathway in patients with AV nodal reentrant tachycardia. Little information is available regarding the effect of adenosine on anterograde and retrograde fast pathway conduction. METHODS AND RESULTS:The effects o...

journal_title：Journal of cardiovascular electrophysiology

authors： Souza JJ,Zivin A,Flemming M,Pelosi F,Oral H,Knight BP,Goyal R,Man KC,Strickberger SA,Morady F

更新日期：1998-08-01 00:00:00

abstract：INTRODUCTION:The role of increased dispersion of repolarization in the genesis of torsades de pointes in patients with long QT syndrome has been clarified, but its role in the genesis of idiopathic ventricular fibrillation (VF) is not yet known. To investigate the pathogenesis of VF, we recorded monophasic action poten...

journal_title：Journal of cardiovascular electrophysiology

authors： Matsuo K,Shimizu W,Kurita T,Suyama K,Aihara N,Kamakura S,Shimomura K

更新日期：1998-01-01 00:00:00

abstract：:The signal-averaged electrocardiogram (SAECG) facilitates noninvasive recording of low-amplitude cardiac signals such as ventricular late potentials. The SAECG has been used to accurately predict life-threatening ventricular tachyarrhythmias in patients after acute myocardial infarction and with nonischemic dilated ca...

journal_title：Journal of cardiovascular electrophysiology

authors： Steinberg JS,Berbari EJ

更新日期：1996-10-01 00:00:00

abstract：INTRODUCTION:Ultrasound guided axillary vein access (UGAVA) is an emerging approach for cardiac implantable electronic device (CIED) implantation not widely utilized. METHODS AND RESULTS:This is a retrospective, age and sex-matched cohort study of CIED implantation from January 2017 to July 2019 comparing UGAVA before...

journal_title：Journal of cardiovascular electrophysiology

authors： Chandler JK,Apte N,Ranka S,Mohammed M,Noheria A,Emert M,Pimentel R,Dendi R,Reddy M,Sheldon SH

更新日期：2020-12-18 00:00:00

abstract：INTRODUCTION:Epicardial catheter ablation is increasingly used to treat arrhythmias with an epicardial component. Nevertheless, percutaneous epicardial access remains associated with a significant risk of major complications. Developing a technology capable of confirming proper placement within the pericardial space co...

journal_title：Journal of cardiovascular electrophysiology

authors： Burkland DA,Ganapathy AV,John M,Greet BD,Saeed M,Rasekh A,Razavi M

更新日期：2017-12-01 00:00:00

abstract：INTRODUCTION:Pulmonary vein (PV) reconnection is frequent in patients showing atrial fibrillation (AF) recurrence after PV isolation (PVI). Its detection with cardiac magnetic resonance (CMR) may help predict outcome and guide redo procedures. We assessed the relationship between scar on CMR and PV reconnection after c...

journal_title：Journal of cardiovascular electrophysiology

authors： Jefairi NA,Camaioni C,Sridi S,Cheniti G,Takigawa M,Nivet H,Denis A,Derval N,Mathilde Merle,Laurent F,Montaudon M,Sacher F,Hocini M,Haissaguerre M,Jais P,Cochet H

更新日期：2019-05-01 00:00:00

abstract：INTRODUCTION:Two randomized trials (Multicenter Automatic Defibrillator Implantation Trial [MADIT] and Multicenter Unsustained Tachycardia Trial [MUSTT]) suggest that implantable cardioverter defibrillator (ICD) placement is associated with improved survival in patients with coronary artery disease, depressed left vent...

journal_title：Journal of cardiovascular electrophysiology

authors： Mittal S,Lomnitz DJ,Mirchandani S,Stein KM,Markowitz SM,Slotwiner DJ,Iwai S,Das MK,Lerman BB

更新日期：2002-04-01 00:00:00