Phrenic nerve stimulation during right ventricular outflow tract pacing: A rare but possible complication.

abstract：INTRODUCTION:Ventricular tachycardia (VT) after postinfarct ventricular septal defect (VSD) repair has not been well characterized. METHODS AND RESULTS:A 55-year-old man developed refractory VT after inferior wall infarction and VSD repair. Entrainment demonstrated a broad reentry circuit path (outer loop) between the...

journal_title：Journal of cardiovascular electrophysiology

authors： Ellison KE,Stevenson WG,Couper GS,Friedman PL

更新日期：1997-10-01 00:00:00

abstract：INTRODUCTION:The purpose of this study is to describe a simple and reliable diagnostic maneuver that allows for the rapid differentiation of atypical AV nodal reentrant tachycardia (AVNRT) from other causes of long RP tachycardia. Long RP tachycardias may be caused by atypical AVNRT, orthodromic reciprocating tachycard...

journal_title：Journal of cardiovascular electrophysiology

authors： Man KC,Niebauer M,Daoud E,Strickberger SA,Kou W,Williamson BD,Morady F

更新日期：1995-09-01 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：INTRODUCTION:Cryothermal, HIFU, and laser catheter-based balloon technologies have been developed to simplify ablation for AF. Initial enthusiasm for their widespread use has been dampened by phrenic nerve (PN) injury. The interaction between PN and pulmonary vein (PV) geometry contributing to PN injury is unclear. ME...

journal_title：Journal of cardiovascular electrophysiology

authors： Okumura Y,Henz BD,Bunch TJ,Dalegrave C,Johnson SB,Packer DL

更新日期：2009-10-01 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:Torsade de pointes (TdP), is often preceded by a short-long cycle length sequence. However, the causal relationship between the pause associated with a short-long cycle length sequence and TdP is not completely understood. This study tests the hypothesis that a pause enhances both dispersion of repolarizat...

journal_title：Journal of cardiovascular electrophysiology

authors： Liu J,Laurita KR

更新日期：2005-09-01 00:00:00

abstract：INTRODUCTION:Bipolar voltage criteria to delineate left atrial (LA) scar have been derived using point-by-point (PBP) contact electroanatomical mapping. It remains unclear how PBP-derived LA scar correlates with multielectrode fast automated mapping (ME-FAM) derived scar. We aimed to correlate scar and bipolar voltages...

journal_title：Journal of cardiovascular electrophysiology

authors： Liang JJ,Elafros MA,Muser D,Pathak RK,Santangeli P,Supple GE,Schaller RD,Frankel DS,Dixit S

更新日期：2017-03-01 00:00:00

abstract：INTRODUCTION:Cardiac resynchronization therapy implants entail significant radiation exposure for patients and physicians. A novel 3D electromagnetic cardiovascular navigation system (MediGuide™) was designed to superimpose the real-time location of sensors embedded in delivery tools on prerecorded coronary sinus (CS) ...

journal_title：Journal of cardiovascular electrophysiology

authors： Valderrabano M,Greenberg S,Razavi H,More R,Ryu K,Heist EK

更新日期：2014-01-01 00:00:00

abstract：INTRODUCTION:Increased dispersion of ventricular repolarization is observed in cardiac hypertrophy and is associated with sudden cardiac death. At present, there is little information about the effects of cardiac hemodynamics and antiarrhythmic drugs on dispersion of repolarization in disease states. We compared the ef...

journal_title：Journal of cardiovascular electrophysiology

authors： Gillis AM,Mathison HJ,Kulisz E,Lester WM

更新日期：1998-09-01 00:00:00

abstract：INTRODUCTION:Electrical stimuli produce a spatial distribution of voltage across the heart. We hypothesized that the potential difference between tissue near a stimulating electrode and a remote site could cause sufficient current to flow through a highly conductive wire connecting the two sites to directly stimulate t...

journal_title：Journal of cardiovascular electrophysiology

authors： Girouard S,Ideker R

更新日期：2001-03-01 00:00:00

abstract：BACKGROUND:Focal atrial tachycardias (FAT) originate from areas with poor cell-to-cell coupling. Due to cellular uncoupling extracellular potentials become fractionated. The degree of fragmentation may be used to identify the site of origin of FAT prior to catheter ablation. We studied electrical fragmentation in relat...

journal_title：Journal of cardiovascular electrophysiology

authors： De Groot NM,Schalij MJ

更新日期：2006-10-01 00:00:00

abstract：INTRODUCTION:Manual, point-by-point electroanatomical mapping requires the operator to directly evaluate each point during map construction. Consequently, point collection can be a slow process. An automated 3D mapping system was developed with the goal of improving key mapping metrics, including map completion time an...

journal_title：Journal of cardiovascular electrophysiology

authors： Ptaszek LM,Moon B,Rozen G,Mahapatra S,Mansour M

更新日期：2018-01-01 00:00:00

abstract：INTRODUCTION:The apamin-sensitive small-conductance calcium-activated potassium current (IKAS ) is increased in heart failure. It is unknown if myocardial infarction (MI) is also associated with an increase of IKAS . METHODS AND RESULTS:We performed Langendorff perfusion and optical mapping in 6 normal hearts and 10 h...

journal_title：Journal of cardiovascular electrophysiology

authors： Lee YS,Chang PC,Hsueh CH,Maruyama M,Park HW,Rhee KS,Hsieh YC,Shen C,Weiss JN,Chen Z,Lin SF,Chen PS

更新日期：2013-10-01 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：: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：:We present a unique case where early proarrhythmic and late antiarrhythmic characteristics of interatrial conduction delay were observed during the long-term progression of HCM. Occurrence of AT constantly increased as the interatrial conduction delay became more prominent, while the P-wave width in sinus rhythm and t...

journal_title：Journal of cardiovascular electrophysiology

authors： Bauernfeind T,Caliskan K,Vletter WB,Ten Cate FJ,Dabiri L,de Groot N,Jordaens L,Szili-Torok T

更新日期：2011-05-01 00:00:00

abstract：OBJECTIVE:Even though diffuse T wave inversion and prolongation of the QT interval in the surface electrocardiogram (ECG) have been consistently reported in patients with transient stress-induced left ventricular apical ballooning (AB), ventricular repolarization has not yet been systematically investigated in this cli...

journal_title：Journal of cardiovascular electrophysiology

authors： Bonnemeier H,Ortak J,Bode F,Kurowski V,Reppel M,Weitz G,Barantke M,Schunkert H,Wiegand UK

更新日期：2006-12-01 00:00:00

abstract：:When an implanted device is infected, complete explantation of the device system, including lead extraction, is usually required. Superficial problems with wound healing may be managed more conservatively, but distinguishing between a surface process and deeper infection can pose a clinical challenge. We present a cas...

journal_title：Journal of cardiovascular electrophysiology

authors： Tschabrunn CM,Rosenbach M,Lavi N,Cooper JM

更新日期：2012-03-01 00:00:00

abstract：INTRODUCTION:The mechanism of complex fractionated atrial electrogram (CFAE) in patients with atrial fibrillation (AF) remains controversial. This study investigated the relationship between CFAE and left atrial (LA) wall thickness. METHODS AND RESULTS:LA muscular wall thickness (excluding fat) was measured by cardiac...

journal_title：Journal of cardiovascular electrophysiology

authors： Wi J,Lee HJ,Uhm JS,Kim JY,Pak HN,Lee M,Kim YJ,Joung B

更新日期：2014-11-01 00:00:00

abstract：:Ablation procedures for atrial fibrillation have become an established and increasingly used option for managing patients with symptomatic arrhythmia. The anatomic structures relevant to the pathogenesis of atrial fibrillation and ablation procedures are varied and include the pulmonary veins, other thoracic veins, th...

journal_title：Journal of cardiovascular electrophysiology

authors： Macedo PG,Kapa S,Mears JA,Fratianni A,Asirvatham SJ

更新日期：2010-07-01 00:00:00

abstract：:Due to the growing number of patients treated with cardiac implantable electronic devices (CIEDs) there is an increased need for lead management, evaluation, and extraction. While CIED lead extraction has many indications, a consistent approach to preprocedural planning should be applied in all cases, including a thor...

journal_title：Journal of cardiovascular electrophysiology

authors： Lewis RK,Pokorney SD,Hegland DD,Piccini JP

更新日期：2020-07-01 00:00:00

abstract：:The mouse has become the principal animal model for studying biologic processes in mammals. Major advances in transgene and gene targeting technology enabled manipulation of the mouse genome in a predictable fashion. Mutant mouse strains provide important insights into the molecular mechanisms underlying normal and di...

journal_title：Journal of cardiovascular electrophysiology

authors： Gehrmann J,Berul CI

更新日期：2000-03-01 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: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

authors： Krishnamoorthy A,Pokorney SD,Lewis RK,Daubert JP,Greenfield RA,Hegland DD,Milano CA,Rogers JG,Schroder JN,Patel CB,Piccini JP

更新日期：2014-11-01 00:00:00

abstract：INTRODUCTION:The success of pulmonary vein isolation (PVI) for atrial fibrillation (AF) may be improved if stable AF sources identified by Focal Impulse and Rotor Mapping (FIRM) are also eliminated. The long-term results of this approach are unclear outside the centers where FIRM was developed; thus, we assessed outcom...

journal_title：Journal of cardiovascular electrophysiology

authors： Miller JM,Kowal RC,Swarup V,Daubert JP,Daoud EG,Day JD,Ellenbogen KA,Hummel JD,Baykaner T,Krummen DE,Narayan SM,Reddy VY,Shivkumar K,Steinberg JS,Wheelan KR

更新日期：2014-09-01 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

authors： Wu S,Hayashi H,Lin SF,Chen PS

更新日期：2005-08-01 00:00:00

abstract：:Application of radiofrequency energy to arrhythmogenic substrates after careful cardiac mapping could ensure a high success rate in eliminating certain types of tachyarrhythmias. Future studies of catheter ablation will focus on how to improve ablation efficacy and achieve a better result in various types of tachyarrh...

journal_title：Journal of cardiovascular electrophysiology

authors： Chen SA,Chiang CE,Tai CT,Lee SH,Chang MS

更新日期：1995-10-01 00:00:00

abstract：:Epicardial RFA to Achieve Electrical PV Isolation. During catheter ablation of atrial fibrillation, ablation within the pulmonary veins is undesirable due to the risk of pulmonary venous stenosis and the possibility of leaving residual cuffs of arrhythmogenic tissue proximal to the ablation lesion set. An extra-ostial...

journal_title：Journal of cardiovascular electrophysiology

authors： Reddy VY,Neuzil P,Ruskin JN

更新日期：2003-06-01 00:00:00

abstract：INTRODUCTION:Beta-blockers are widely used to prevent the lethal cardiac events associated with the long QT syndrome (LQTS), especially in KCNQ1-related LQTS (LQT1) patients. Some LQT1 patients, however, are refractory to this therapy. METHODS AND RESULTS:Eighteen symptomatic LQTS patients (12 families) were genetical...

journal_title：Journal of cardiovascular electrophysiology

authors： Kobori A,Sarai N,Shimizu W,Nakamura Y,Murakami Y,Makiyama T,Ohno S,Takenaka K,Ninomiya T,Fujiwara Y,Matsuoka S,Takano M,Noma A,Kita T,Horie M

更新日期：2004-02-01 00:00:00

abstract：INTRODUCTION:Hemodynamic collapse precludes extensive catheter mapping to identify focal target regions in many patients with ventricular tachycardia (VT) associated with heart disease. This study tested the feasibility of catheter ablation of poorly tolerated VTs by targeting a region identified during sinus rhythm. ...

journal_title：Journal of cardiovascular electrophysiology

authors： Ellison KE,Stevenson WG,Sweeney MO,Lefroy DC,Delacretaz E,Friedman PL

更新日期：2000-01-01 00:00:00