Extra-ostial pulmonary venous isolation: use of epicardial ablation to eliminate a point of conduction breakthrough.

abstract：INTRODUCTION:The high posterolateral right atrium (RA) is considered the "sinus node area," but we lack information on endocardial atrial activation in sinus rhythm. We studied RA and left atrial (LA) endocardial activation in the electrophysiology laboratory. METHODS AND RESULTS:Thirty-five patients (21 men) aged 47 ...

journal_title：Journal of cardiovascular electrophysiology

authors： Cosío FG,Martín-Peñato A,Pastor A,Núñez A,Montero MA,Cantale CP,Schames S

更新日期：2004-05-01 00:00:00

abstract：:Idiopathic ventricular tachycardia (IVT) in patients without structural heart disease commonly arises from the right or left outflow tracts, but there remain arrhythmias that can only be ablated by an epicardial approach. We report a case of an epicardial ventricular tachycardia originating within the left main corona...

journal_title：Journal of cardiovascular electrophysiology

authors： Atienza F,Arenal A,Ormaetxe J,Almendral J

更新日期：2005-11-01 00:00:00

abstract：INTRODUCTION:The right inferior pulmonary vein (RIPV) accounts as the most frequently reconnected vein after pulmonary vein isolation using second-generation cryoballoon ablation (CB-A). Our objective was to assess anatomic predictors of late RIPV reconnection based on preprocedural computed tomography scan. METHODS:P...

journal_title：Journal of cardiovascular electrophysiology

authors： Terasawa M,Chierchia GB,Takarada K,Rizzo A,Maj R,Borio G,Osório TG,Scala O,Galli A,Al Housari M,Tanaka K,Sieira J,Brugada P,de Asmundis C,Ströker E

更新日期：2019-11-01 00:00:00

abstract：INTRODUCTION:The measurement of microvolt level T wave alternans (TWA) is a technique for detecting arrhythmia vulnerability. Previous studies demonstrated that the magnitude of TWA is dependent on heart rate. However, the effects of antiarrhythmic drugs on TWA are unknown. METHODS AND RESULTS:This was a prospective e...

journal_title：Journal of cardiovascular electrophysiology

authors： Kavesh NG,Shorofsky SR,Sarang SE,Gold MR

更新日期：1999-05-01 00:00:00

abstract：INTRODUCTION:Recent studies described the occurrence of conduction block within pulmonary veins. The purpose of this study was to evaluate the prevalence of exit block during arrhythmias that arise in pulmonary veins. METHODS AND RESULTS:Twenty-five patients with atrial tachycardia/fibrillation underwent successful ab...

journal_title：Journal of cardiovascular electrophysiology

authors： Tse HF,Lau CP,Kou W,Pelosi F,Oral H,Kim M,Michaud GF,Knight BP,Moscucci M,Strickberger SA,Morady F

更新日期：2000-04-01 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：INTRODUCTION:A male patient with an atriofascicular pathway underwent catheter ablation of the atriofascicular pathway during atrial fibrillation. METHODS AND RESULTS:The patient had preexcited atrial fibrillation both clinically and repeatedly during electrophysiologic study. A preexcited tachycardia with a 1:1 AV re...

journal_title：Journal of cardiovascular electrophysiology

authors： Miller JM,Harper GR,Rothman SA,Hsia HH

更新日期：1994-10-01 00:00:00

abstract：INTRODUCTION:We investigated the spread of the excitation wave over the atria following initiation in a given focus in an atrial model containing its overall geometry only, i.e., without atrial bundles. METHODS AND RESULTS:The propagation velocity of the excitation wave was taken to be uniform, and the wall thickness ...

journal_title：Journal of cardiovascular electrophysiology

authors： van Dam PM,van Oosterom A

更新日期：2003-10-01 00:00:00

abstract：:The ECG appearance in Brugada syndrome is caused by failure of the dome of the action potential to develop. Increased activity of the I(to) current in epicardial cells generates a transmural gradient with repolarization dispersion between the epicardium and the endocardium in the right ventricular wall, thus favoring ...

journal_title：Journal of cardiovascular electrophysiology

authors： Abud A,Bagattin D,Goyeneche R,Becker C

更新日期：2006-02-01 00:00:00

abstract：INTRODUCTION:The relationship between the determining factors and beating rates of pulmonary vein (PV) pacemaker cardiomyocytes has not been fully elucidated. The purposes of this study were to compare the electrophysiological characteristics between PV fast and slow pacemaker cardiomyocytes. METHODS:Whole-cell patch ...

journal_title：Journal of cardiovascular electrophysiology

authors： Chen YC,Pan NH,Cheng CC,Higa S,Chen YJ,Chen SA

更新日期：2009-09-01 00:00:00

abstract：INTRODUCTION:Two hypotheses have been proposed to explain the mechanisms of vulnerability and related failure of defibrillation therapy: the cross-field-induced critical point hypothesis and the virtual electrode-induced phase singularity hypothesis. These two hypotheses predict the opposite effect of preshock repolari...

journal_title：Journal of cardiovascular electrophysiology

authors： Cheng Y,Nikolski V,Efimov IR

更新日期：2000-09-01 00:00:00

abstract：BACKGROUND:Evaluation of ventricular rate control in atrial fibrillation (AF) can be difficult, and the presence of an AF-induced ventricular cardiomyopathy due to intermittent poor rate control or other causes may be underestimated. The outcome with AF ablation in patients with a decreased left ventricular ejection fr...

journal_title：Journal of cardiovascular electrophysiology

authors： Gentlesk PJ,Sauer WH,Gerstenfeld EP,Lin D,Dixit S,Zado E,Callans D,Marchlinski FE

更新日期：2007-01-01 00:00:00

abstract：:A novel application of the Biosense CARTO System anatomic electromagnetic voltage mapping is presented, utilized as a guide for permanent pacemaker placement. The technique is illustrated in the successful implantation of an atrial lead in a patient with Ebstein's anomaly characterized by a severely dilated right atri...

journal_title：Journal of cardiovascular electrophysiology

authors： Kloosterman EM,Yamamura K,Alba J,Mitrani RD,Myerburg RJ,Interian A Jr

更新日期：2000-01-01 00:00:00

abstract：INTRODUCTION:The relationships between heart rate (HR) and HR variability (HRV) are not simple. Because both depend on the autonomic nervous system (ANS), they are not independent variables. Technically, the quantification of HRV is influenced by the duration of the cardiac cycles. The complexity of these relationships...

journal_title：Journal of cardiovascular electrophysiology

authors： Coumel P,Maison-Blanche P,Catuli D

更新日期：1994-11-01 00:00:00

abstract：INTRODUCTION:Studies suggest that entrainment response (ER) of reentrant tachycardia to overdrive pacing can be estimated using signals from sites other than the paced site. METHODS AND RESULTS:A formula for estimation of ER using remote sites against the difference between the postpacing interval (PPI) and tachycardi...

journal_title：Journal of cardiovascular electrophysiology

authors： Hammer PE,Brooks DH,Triedman JK

更新日期：2003-01-01 00:00:00

abstract：INTRODUCTION:Fusion of left ventricular pacing with intrinsic conduction provides superior resynchronization compared to biventricular pacing. His bundle pacing (HBP) preserves intrinsic conduction and allows for constant fusion with left ventricular pacing. This study evaluated sequential His bundle and left ventricul...

journal_title：Journal of cardiovascular electrophysiology

authors： Deshmukh A,Sattur S,Bechtol T,Heckman LIB,Prinzen FW,Deshmukh P

更新日期：2020-09-01 00:00:00

abstract：BACKGROUND:Patients with left bundle branch block (LBBB) undergoing right heart catheterization can develop complete heart block (CHB) or right bundle branch block (RBBB) in response to right bundle branch (RBB) trauma. We hypothesized that LBBB patients with an initial r wave (>or=1 mm) in lead V1 have intact left to ...

journal_title：Journal of cardiovascular electrophysiology

authors： Padanilam BJ,Morris KE,Olson JA,Rippy JS,Walsh MN,Subramanian N,Vidal A,Prystowsky EN,Steinberg LA

更新日期：2010-07-01 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：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

authors： Nayak HM,Verdino RJ,Russo AM,Gerstenfeld EP,Hsia HH,Lin D,Dixit S,Cooper JM,Callans DJ,Marchlinski FE

更新日期：2008-07-01 00:00:00

abstract：INTRODUCTION:Atrial fibrillation (AF) ablation is increasingly common, but is associated with potential major complications. Technology, experience, and protocols have evolved significantly in recent times, and may have impacted procedural safety. We sought to compare AF ablation safety profiles, including complication...

journal_title：Journal of cardiovascular electrophysiology

authors： Muthalaly RG,John RM,Schaeffer B,Tanigawa S,Nakamura T,Kapur S,Zei PC,Epstein LM,Tedrow UB,Michaud GF,Stevenson WG,Koplan BA

更新日期：2018-06-01 00:00:00

abstract：INTRODUCTION:Blockade of the rapid delayed rectifier potassium current (IKr) as an important mechanism for current Class III antiarrhythmics is less effective in action potential prolongation during beta-adrenergic activation. We hypothesized that blockade of the increased slow IK (IKs) current during beta-adrenergic s...

journal_title：Journal of cardiovascular electrophysiology

authors： Schreieck J,Wang Y,Gjini V,Korth M,Zrenner B,Schömig A,Schmitt C

更新日期：1997-12-01 00:00:00

abstract：:We report a case of pericardial constriction associated with defibrillator patches developing 4.5 years after implantation. This constriction was related to the presence of a large pericardial mass that had developed above the defibrillator patch. This mass, which had a calcified superior border, suggested former hema...

journal_title：Journal of cardiovascular electrophysiology

authors： Le Tourneau T,Klug D,Lacroix D,Kacet S,Lekieffre J

更新日期：1996-06-01 00:00:00

abstract：INTRODUCTION:Evaluation of conduction over a linear ablation lesion at the anterior mitral annulus can be time-consuming and difficult during ongoing radiofrequency application. The purpose of this study was to validate conduction time from the beginning of the p wave and from the coronary sinus ostium to the left atri...

journal_title：Journal of cardiovascular electrophysiology

authors： Huemer M,Wutzler A,Parwani AS,Attanasio P,Heiderfazel S,Ewertsen NC,Haverkamp W,Boldt LH

更新日期：2015-07-01 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：:Macro-Reentrant ARVC epi-VT with a Focal Endo-Activation. A 55-year-old man with arrhythmogenic right ventricular cardiomyopathy underwent catheter ablation of ventricular tachycardia (VT) with left bundle branch block and left superior axis QRS morphology with an early precordial transition. Endocardial mapping durin...

journal_title：Journal of cardiovascular electrophysiology

authors： Yamada T,Plumb VJ,Tabereaux PB,Kay GN

更新日期：2009-06-01 00:00:00

abstract：BACKGROUND:Left bundle branch pacing (LBBP) is emerging as a novel option for physiological ventricular pacing. The impact of current of injury (COI) at left bundle branch (LBB) has not been previously evaluated. METHODS:Consecutive patients with QRS duration less than 120 milliseconds referred for LBBP in whom LBB po...

journal_title：Journal of cardiovascular electrophysiology

authors： Su L,Xu T,Cai M,Xu L,Vijayaraman P,Sharma PS,Chen X,Zheng R,Wu S,Huang W

更新日期：2020-04-01 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

authors： Castillo Castillo J,Peñafiel Verdú P,Martínez Sánchez J,García Alberola A

更新日期：2013-03-01 00:00:00

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：INTRODUCTION:Syncope occasionally may occur in the supine patient due to severe brady- or tachyarrhythmia. However, recurrent syncope upon assumption of the supine position as a result of a neurally mediated reflex mechanism has not been reported previously. METHODS AND RESULTS:Two young patients, both of whom had sig...

journal_title：Journal of cardiovascular electrophysiology

authors： Iskos D,Shultz JJ,Benditt DG

更新日期：1998-04-01 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

authors： Polejaeva IA,Ranjan R,Davies CJ,Regouski M,Hall J,Olsen AL,Meng Q,Rutigliano HM,Dosdall DJ,Angel NA,Sachse FB,Seidel T,Thomas AJ,Stott R,Panter KE,Lee PM,Van Wettere AJ,Stevens JR,Wang Z,MacLeod RS,Marrouche NF,

更新日期：2016-10-01 00:00:00