Discordant vs. concordant left bundle branch block: A potential clinical significance.

abstract：INTRODUCTION:Not only repolarization, but also depolarization ECG indexes reflect the progression of ischemic injury. The aim was to assess the QRS duration and morphology dynamics during the prolonged coronary occlusion and their association with the myocardial area at risk (MaR) and final infarct size (IS). METHODS:...

journal_title：Journal of electrocardiology

authors： Demidova MM,Martín-Yebra A,Koul S,Engblom H,Martínez JP,Erlinge D,Platonov PG

更新日期：2016-05-01 00:00:00

abstract：:The myocardial electrical conduction is significantly influenced by the sympathetic and parasympathetic nervous systems. Hypervagotonia refers to increased vagal tone leading to sinus bradycardia, sinus pause, or any degree of atrioventricular (AV) block. There are many clinical, electrocardiographic, and electrophysi...

journal_title：Journal of electrocardiology

authors： Oghlakian G,Correia J

更新日期：2009-11-01 00:00:00

abstract：:Junctional ectopic tachycardia(JET) is a rare childhood arrhythmia originating from the area adjacent to the atrioventricular(AV) node. It often occurs after surgical procedures like repair of Tetralogy of Fallot, atrioventricular septal defect and ventricular septal defect, which are all performed in that area. While...

journal_title：Journal of electrocardiology

authors： Ozyilmaz I,Ergul Y,Ozyilmaz S,Guzeltas A

更新日期：2017-01-01 00:00:00

abstract：:The authors focus on computational separation of the individual patterns of occlusion of the major segments of the right coronary artery. The raw patterns of occlusion throughout 15 standard subdivisions of the coronary arterial tree and body surface isoarea maps for 8 consecutive 10-msec intervals of QRS were examine...

journal_title：Journal of electrocardiology

authors： Horan LG,Sridharan MR,Flowers NC,Killam HA

更新日期：1989-01-01 00:00:00

abstract：:Previous studies indicate that the predictive value of atrial fibrillatory rate in patients undergoing cardioversion of atrial fibrillation (AF) of long duration is limited. The present study investigates signal entropy in this setting. Standard 12-lead electrocardiograms (ECGs) were recorded from 66 consecutive patie...

journal_title：Journal of electrocardiology

authors： Petersson R,Sandberg F,Platonov PG,Holmqvist F

更新日期：2011-03-01 00:00:00

abstract：BACKGROUND:Most patients presenting with suspected acute coronary syndrome (ACS) are admitted to telemetry units. While telemetry is an appropriate level of care, acute complications requiring a higher level of care in the intensive care unit (ICU) occur. PURPOSE:Among patients admitted to telemetry for suspected ACS,...

journal_title：Journal of electrocardiology

authors： Pelter MM,Loranger D,Kozik TM,Fidler R,Hu X,Carey MG

更新日期：2016-01-01 00:00:00

abstract：BACKGROUND:No direct comparison of current electrocardiogram (ECG) interpretation programs exists. OBJECTIVE:Assess the accuracy of ECG interpretation programs in detecting abnormal rhythms and flagging for priority review records with alterations secondary to acute coronary syndrome (ACS). METHODS:More than 2,000 di...

journal_title：Journal of electrocardiology

authors： De Bie J,Martignani C,Massaro G,Diemberger I

更新日期：2020-01-01 00:00:00

abstract：:Hypertrophic cardiomyopathy (HCM) with apical aneurysm (AA) is rare, but has been reported to be associated with refractory ventricular tachycardias (VTs). Majority of such cases had a central isthmus of the reentry circuit on the border zone of AA. In this report, we describe a rare case of the successful epicardial ...

journal_title：Journal of electrocardiology

authors： Nakao M,Watanabe M,Kamada R,Hagiwara H,Takahashi Y,Koya T,Kadosaka T,Koizumi T,Hirose M,Anzai T

更新日期：2020-01-01 00:00:00

abstract：BACKGROUND:There is a controversy regarding the association between QRS width and ventricular arrhythmias (VAs). We hypothesized that predictive value of the QRS width could be improved if QRS width were considered in the context of the sum magnitude of the absolute QRST integral in 3 orthogonal leads sum absolute QRST...

journal_title：Journal of electrocardiology

authors： Tereshchenko LG,Cheng A,Fetics BJ,Marine JE,Spragg DD,Sinha S,Calkins H,Tomaselli GF,Berger RD

更新日期：2010-11-01 00:00:00

abstract：:The classic electrocardiographic (ECG) manifestation of stage I of acute pericarditis is diffuse ST elevation and PR depression with ST depression in lead aVR. One of the most common conditions, that is often confused with acute pericarditis, is the benign diffuse ST elevation, termed "early repolarization with ST ele...

journal_title：Journal of electrocardiology

authors： Birnbaum Y,Perez Riera AR,Nikus K

更新日期：2019-01-01 00:00:00

abstract：:This study assesses the occurrence of and identifies clinical characteristics associated with the development of aberrant conduction during infusion of the I(kr)-blocker almokalant. Class III drugs may induce aberrant conduction by prolongation of cardiac repolarization, especially during atrial fibrillation (AF). Nin...

journal_title：Journal of electrocardiology

authors： Houltz B,Darpö B,Crijns HJ,Swedberg K,Blomström P,Jensen SM,Svernhage E,Edvardsson N

更新日期：2002-07-01 00:00:00

abstract：BACKGROUND:Our aim was to evaluate the intermittent use of a handheld ECG system for detecting silent arrhythmias and cardiac autonomic dysfunction in children with univentricular hearts. METHODS:Twenty-seven patients performed intermittent ECG recordings with handheld devices during a 14-day period. A manual arrhythm...

journal_title：Journal of electrocardiology

authors： Dahlqvist JA,Karlsson M,Wiklund U,Hörnsten R,Rydberg A

更新日期：2014-05-01 00:00:00

abstract：:Implantable cardioverter defibrillators (ICDs) detect and defibrillate ventricular fibrillation (VF) and ventricular tachycardia (VT). Other therapies which use less energy are also available to terminate VT. Previous studies have shown that ICD rate schemes often misdiagnose VT as VF. In this study, an improved VF cl...

journal_title：Journal of electrocardiology

authors： Caswell SA,Jenkins JM,DiCarlo LA

更新日期：1998-01-01 00:00:00

abstract：:We have analyzed the Wilson ventricular gradient in terms of body surface potential maps and of the reduction of such surface patterns to equivalent dipoles or vectors. While the ventricular gradient traditionally was treated as first a scalar, then a vector concept, we found that the three entities (QRS area, T area,...

journal_title：Journal of electrocardiology

authors： Sridharan MR,Horan LG,Hand RC,Johnson JC,Sohi GS,Flowers NC

更新日期：1981-10-01 00:00:00

abstract：:Until recently, ECG accuracy in localizing acute myocardial infarction (AMI) could be assessed only by comparing the ECGs with autopsy findings. This approach, however, preselected patients, including only those who died. It is possible that this postmortem group of patients would be different from the whole populatio...

journal_title：Journal of electrocardiology

authors： Yasuda T,Ribeiro LG,Holman BL,Alpert JS,Maroko PR

更新日期：1982-04-01 00:00:00

abstract：:In recent years, it has become increasingly clear that for an important subset of patients with coronary artery disease, many or all of their ischemic episodes are not accompanied by anginal pain. For these patients, it is desirable to detect these ischemic episodes as periods of ST-segment depression on Holter tapes....

journal_title：Journal of electrocardiology

authors： Hubelbank M

更新日期：1992-01-01 00:00:00

abstract：:Voltage-sensitive dyes and high resolution optical mapping were used to analyze the characteristics of spiral waves of excitation in isolated ventricular myocardium. In addition, analytical techniques, which have been previously used in the study of the characteristics of spiral waves in chemical reactions, were appli...

journal_title：Journal of electrocardiology

authors： Davidenko JM,Pertsov AM,Salomonsz R,Baxter WP,Jalife J

更新日期：1992-01-01 00:00:00

abstract：:Signal-averaged electrocardiogram (ECG) variables were analyzed in 81 patients with ventricular tachyarrhythmia and nonischemic heart disease using the ART LVP 101 EPX system (Austin, TX): 15 ventricular tachycardia patients with arrhythmogenic right ventricular dysplasia (ARVD), 7 ventricular tachycardia patients wit...

journal_title：Journal of electrocardiology

authors： Aihara N,Ohe T,Shimomura K

更新日期：1994-01-01 00:00:00

abstract：:A superficial accessory pathway was demonstrated by electrophysiologic techniques and surgical histopathology in 30-year-old male with Wolff-Parkinson-White syndrome, severe mitral valve disease and medically uncontrollable arrhythmias. In this patient, electrode catheter studies in the cardiac catheterization laborat...

journal_title：Journal of electrocardiology

authors： Untereker WJ,Litwak RS,Mindich BP,Wiemann G,Goldberg S,Gorlin R,Kupersmith J

更新日期：1980-10-01 00:00:00

abstract：:To investigate the effects of electrolytes on anterograde conduction via accessory pathways, 12 patients with Wolff-Parkinson-White syndrome received, while in sinus rhythm, intravenous KCl (7 mEq in 200 mL of 0.9% NaCl), MgSO4 (10 mL 20% in 200 mL of 0.9% NaCl), NaCl (0.9%, 200 mL), and procainamide (maximal dose, 10...

journal_title：Journal of electrocardiology

authors： Sideris AM,Galiatsu E,Filippatos GS,Kappos K,Anthopoulos LP

更新日期：1996-01-01 00:00:00

abstract：:The purpose of this experiment is to study the possibility of intra-QRS high-frequency electrocardiographic (HFECG) changes for the evaluation of and recovery from myocardial ischemia in both the time-domain and spectral-turbulence analyses on the signal-averaged ECG using the Holter ECG monitoring (Holter SAECG) syst...

journal_title：Journal of electrocardiology

authors： Yakubo S,Ozawa Y,Komaki K

更新日期：1995-01-01 00:00:00

abstract：:Under healthy conditions, the normal cardiac (sinus) interbeat interval fluctuates in a complex manner. Quantitative analysis using techniques adapted from statistical physics reveals the presence of long-range power-law correlations extending over thousands of heartbeats. This scale-invariant (fractal) behavior sugge...

journal_title：Journal of electrocardiology

authors： Peng CK,Havlin S,Hausdorff JM,Mietus JE,Stanley HE,Goldberger AL

更新日期：1995-01-01 00:00:00

abstract：BACKGROUND:Displacement of ECG leads can result in unwarranted findings. We assessed the frequency of Brugada-type patterns in athletes when precordial leads were purposely placed upward. METHODS:Four hundred ninety-one collegiate athletes underwent two ECGs: one with standard leads, one with V1 and V2 along the 2nd i...

journal_title：Journal of electrocardiology

authors： Chung EH,McNeely DE 3rd,Gehi AK,Brickner T,Evans S,Pryski E,Waicus K,Stafford H,Mounsey JP,Schwartz JD,Huang S,Pursell I,Ciocca M

更新日期：2014-01-01 00:00:00

abstract：:Pacemaker capture during the supernormal period was seen in a case of modulated parasystole where ectopic cycles occurred without any interposed nonparasystolic beat. This contrasts with previous clinical reports, since, in the latter, the parasystolic cycle length could not be measured directly. As in experimental st...

journal_title：Journal of electrocardiology

authors： Castellanos A,De La Hera A,Luceri RM,Mendoza IJ,Myerburg RJ

更新日期：1989-10-01 00:00:00

abstract：AIMS:This investigation addresses procedural characteristics of catheter ablation in patients with atrial fibrillation (AF) and sinus bradycardia. METHODS:From the prospective, multi-center German Ablation Registry 1073 patients with sinus rhythm at the time of AF ablation were divided into two groups according to hea...

journal_title：Journal of electrocardiology

authors： Zylla MM,Brachmann J,Lewalter T,Hoffmann E,Kuck KH,Andresen D,Willems S,Hochadel M,Senges J,Katus HA,Thomas D

更新日期：2016-03-01 00:00:00

abstract：:The JTp interval gained interest as a marker differentiating effects of drugs on cardiac ion channels. For JTp interval, both the beginning - identification of J point and identification of T wave end remains the subject of substantial variability. We aimed to analyze diagnostic and prognostic performance of JTp inter...

journal_title：Journal of electrocardiology

authors： Zareba W,McNitt S,Polonsky S,Couderc JP

更新日期：2017-01-01 00:00:00

abstract：:Early recognition of ST-segment elevation myocardial infarction equivalent electrocardiogram patterns is of paramount importance. Successful identification of these ischemic patterns helps ensure proper triage of patients needing urgent restoration of coronary perfusion. The so-called de Winter sign has become increas...

journal_title：Journal of electrocardiology

authors： Kashou AH,LoCoco S,Asirvatham SJ,May AM,Noseworthy PA

更新日期：2020-01-01 00:00:00

abstract：:This study employs a bifurcation analysis approach to elucidate the effect of the key ion channels on cardiac arrhythmias and thereby explain the efficacy of antiarrhythmic drugs in controlling arrhythmias. The model used for the analysis contains the key ion channels involved in the ventricular action potential--fast...

journal_title：Journal of electrocardiology

authors： Chay TR

更新日期：1995-01-01 00:00:00

abstract：:Ventricular fibrillation (VF), uninterrupted, is fatal within minutes. Implantable cardioverter defibrillators (ICDs) sense ventricular electrograms (EGMs) during VF and detect the VF rhythm (a sequence of VF sensed events) to deliver a shock to terminate VF and save lives. VF sensing and detection in Medtronic ICDs h...

journal_title：Journal of electrocardiology

authors： Brown ML

更新日期：2018-01-01 00:00:00

abstract：:There is an increased risk of sudden cardiac death (SCD) and sudden cardiac arrest (SCA), in African Americans, the basis of which is likely multifactorial. African Americans have higher rates of traditional cardiac risk factors including hypertension, left ventricular hypertrophy, diabetes, coronary heart disease, an...

journal_title：Journal of electrocardiology

authors： Fender EA,Henrikson CA,Tereshchenko L

更新日期：2014-11-01 00:00:00