Presence of intermittent J waves in multiple leads in relation to episode of atrial and ventricular fibrillation.

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：:In a 66-year-old male with subacute extensive anterior wall myocardial infarction, we report a change in ST vector orientation from a basal anterior to a mid anterior after coronary artery recanalization of the proximal left anterior descending coronary artery with rotational atherectomy. The ST vector shift on the fr...

journal_title：Journal of electrocardiology

authors： Akutsu Y,Nishimura H,Hamazaki Y,Kaneko K,Kodama Y,Li HL,Suyama J,Shinozuka A,Gokan T,Kobayashi Y

更新日期：2009-09-01 00:00:00

abstract：BACKGROUND:Some patients with ongoing heart failure symptoms after treatment with cardiac resynchronization therapy (CRT) demonstrate QRS prolongation during exercise. We investigated whether the optimal CRT pacing configuration changes during dobutamine stress. METHODS:Seven patients undergoing CRT implantation under...

journal_title：Journal of electrocardiology

authors： Atwater BD,Jones WS,Loring Z,Friedman DJ

更新日期：2020-01-01 00:00:00

abstract：:In order to differentiate posterior (posterolateral) myocardial infarction (PMI) from the anterior shift of the QRS loop in "normal variant" cases using a vectorcardiogram, the T loop as well as the QRS loop in the transverse plane (TP) were analyzed in 34 elderly Japanese males with angiographically-proven PMI and in...

journal_title：Journal of electrocardiology

authors： Takatsu F,Osugi J,Nagaya T,Uwatoko M,Watabe S,Ishikawa H

更新日期：1986-04-01 00:00:00

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：:A 21year old gentleman was admitted with shortness of breath and heart failure. He was noted to have incessant supraventricular tachycardia which was refractory to pharmacological and electrical cardioversion. Electrophysiology study revealed focal atrial tachycardia from an unusual location which was successfully abl...

journal_title：Journal of electrocardiology

authors： Nair KKM,Namboodiri N,Gopalakrishnan A,Abhilash SP,Valaparambil A

更新日期：2018-01-01 00:00:00

abstract：:Under hypoxic (95% N2 + 5% CO2) perfusion, electrophysiological effects of L-carnitine on canine papillary muscles were studied using standard microelectrode techniques. During hypoxic perfusion for 60 min, resting membrane potential (RMP), action potential amplitude (APA) and maximum upstroke velocity of phase 0 were...

journal_title：Journal of electrocardiology

authors： Hayashi H,Suzuki Y,Abe M,Nishihara K,Masumura Y,Kamikawa T,Kobayashi A,Yamazaki N

更新日期：1984-01-01 00:00:00

abstract：:This study described the linear relationship of the myocardial infarct size, measured postmortem, to the integral of the sequential vector spatial magnitudes analyzed at 400 samples per second during the initial period of abnormal depolarization (IAD) in 25 patients with myocardial infarction (MI) and ten controls. Th...

journal_title：Journal of electrocardiology

authors： Cowan MJ,Reichenbach DD,Bruce RA,Fisher L

更新日期：1982-10-01 00:00:00

abstract：BACKGROUND:We studied whether social media applications can serve as effective educational tools for teaching electrocardiogram (ECG) interpretation to medical residents. METHODS:39 emergency, family, and internal medicine residents participated in the 33-week "ECG of the Week" curriculum via Facebook and Twitter. ECG...

journal_title：Journal of electrocardiology

authors： Liu SS,Zakaria S,Vaidya D,Srivastava MC

更新日期：2017-01-01 00:00:00

abstract：:Chemical necrosis was produced with the infiltration of 96 degrees alcohol on the middle anterosuperior segment 5 (nomenclature of the International Society for Computerized Electrocardiology) of the free left ventricular (LV) wall in 45 dogs and on the apical segment 10 and middle posterolateral segment 11 in 30 othe...

journal_title：Journal of electrocardiology

authors： Medrano GA,de Micheli A

更新日期：1994-07-01 00:00:00

abstract：:We measured action potential duration (APD) from the endocardium (Endo) and epicardium (Epi) of the left ventricular free wall in Japanese monkey hearts and found that the APD of Endo is significantly longer than that of Epi at a stimulus cycle length of 1500 msec in normal Tyrode solution (control condition). We then...

journal_title：Journal of electrocardiology

authors： Imanishi S,Arita M

更新日期：1987-07-01 00:00:00

abstract：BACKGROUND:Cardiac magnetic resonance (CMR) is currently considered the reference standard for in vivo assessment of myocardial infarction (MI). There is, however, no international consensus on how MI quantification from CMR should be performed. The aim of this study was to test how previously published manual quantifi...

journal_title：Journal of electrocardiology

authors： Welinder A,Hakacova N,Martin T,Engblom H

更新日期：2011-09-01 00:00:00

abstract：:We recently reported that signal averaged electrocardiograms (SAECG) measurements possess a circadian rhythm and are closely related to heart rate or heart rate variability in healthy volunteers. This study determines the influence of autonomic tone on the filtered QRS (f-QRS) duration from SAECG by using pharmacologi...

journal_title：Journal of electrocardiology

authors： Nakagawa M,Iwao T,Abe H,Ishida S,Takahashi N,Fujino T,Yonemochi H,Saikawa T,Ito M

更新日期：2000-01-01 00:00:00

abstract：:Cardiac hemangioma is a rare primary cardiac tumor. We reported the case of patient with left ventricular hemangioma who was referred to our hospital complaining of palpitation for one week. 24 h Holter revealed high episode of ventricular arrhythmia. Echocardiography showed a mass at left ventricle, which was also co...

journal_title：Journal of electrocardiology

authors： Wang Y,Liu S,Yang J,Gu T,Zhang L

更新日期：2017-01-01 00:00:00

abstract：:In patients with suspected ST elevation myocardial infarction, it is of paramount importance to identify artifacts on the resting electrocardiogram that may be erroneously interpreted as ST segment deviations in order to prevent administration of potentially harmful pharmacotherapy and invasive coronary angiography. I...

journal_title：Journal of electrocardiology

authors： Sud M,Chauhan VS,Madan M

更新日期：2018-01-01 00:00:00

abstract：:Symptoms of syncope and palpitations are not uncommon in children with and without heart disease. They present a diagnostic dilemma when conventional cardiovascular testing is inconclusive. The implantable loop recorder (ILR) has been shown to play an important role in diagnosing recurrent syncope in adult patients. I...

journal_title：Journal of electrocardiology

authors： Bloemers BL,Sreeram N

更新日期：2002-01-01 00:00:00

abstract：:From 81,000 ECGs we collected 83 cases that fulfilled the criteria of Interatrial Conduction Disturbances with Left Atrial Retrograde Activation (IACD-LARA) (P +/- in II, III and VF with P width greater than or equal to 120 msec.). We present the detailed study of 35 cases with surface ECG and VCG and 29 cases with or...

journal_title：Journal of electrocardiology

authors： Bayes de Luna A,Fort de Ribot R,Trilla E,Julia J,Garcia J,Sadurni J,Riba J,Sagues F

更新日期：1985-01-01 00:00:00

abstract：AIM:The aim of this study was to investigate whether interventricular asynchrony (IVA) can be measured by electrocardiography. METHODS:Sixty-two patients (New York Heart Association heart failure functional class III: age, mean +/- SD: 64 +/- 9 years; ejection fraction, mean +/- SD: 24% +/- 8%; dilative cardiomyopathy...

journal_title：Journal of electrocardiology

authors： Samol A,Klotz S,Stypmann J,Bruns HJ,Houben R,Paul M,Vahlhaus C

更新日期：2010-05-01 00:00:00

abstract：:This study was designed to clarify the mechanism of reperfusion arrhythmia. In the mongrel dogs, the left anterior descending coronary artery was occluded for 15 min and then the ligation was released. The dogs were divided into two groups: one was the control group, and the other the indomethacin group in which indom...

journal_title：Journal of electrocardiology

authors： Miyazaki Y,Kotaka K,Ogawa K,Satake T,Sugiyama S,Ozawa T

更新日期：1982-10-01 00:00:00

abstract：OBJECTIVE:To determine the effect of exercise and heart rate on the early repolarization (ER) pattern; focusing on the new criteria for identification of ER. METHODS:The ECG measurements on the terminal QRS notch or slur found in early repolarization were quantitated before, during and after exercise; specifically: (i...

journal_title：Journal of electrocardiology

authors： Nouraei H,Rabkin SW

更新日期：2019-01-01 00:00:00

abstract：:We present a case of an anterior ST-segment elevation acute coronary syndrome secondary to occlusion of a non-dominant right coronary artery. Usually, an anterior ST-segment elevation corresponds to a left anterior descending artery occlusion; however, in rare cases it can be secondary to a non-dominant right coronary...

journal_title：Journal of electrocardiology

authors： Cecconi A,Gonzalez Bartol E,Bastante T,Jimenez-Borreguero LJ,Alfonso F

更新日期：2018-01-01 00:00:00

abstract：:This article shows the use of the equivalent surface source model in its application to the genesis of the surface ECG in which the sources are of the double layer type. This model has previously been shown to yield an accurate description of body surface potentials during the QRS interval. Its application to the gene...

journal_title：Journal of electrocardiology

authors： van Oosterom A

更新日期：2001-01-01 00:00:00

abstract：:The vectorcardiographic basis of indeterminate QRS axis has not been elucidated. Accordingly, Frank lead VCGs were obtained on ten consecutive subjects with biphasic QRS complexes in the six extremity leads. The frontal plane vector in each case showed a very narrow loop inscribed in a symmetrical fashion around the E...

journal_title：Journal of electrocardiology

authors： Goldberger AL

更新日期：1982-01-01 00:00:00

abstract：:Many electrocardiographic criteria have been proposed for the differentiation of ventricular extrasystole and supraventricular conduction with aberrancy in atrial fibrillation but the validity of these have not been confirmed by intracardiac studies. We recorded His bundle electrograms in nineteen patients (eleven men...

journal_title：Journal of electrocardiology

authors： Gulamhusein S,Yee R,Ko PT,Klein GJ

更新日期：1985-01-01 00:00:00

abstract：:Sources of error in averaging for late ventricular potentials include variations in the magnitude and timing of late potentials as well as variability in the temporal alignment of successive cardiac cycles during averaging. Since these errors can both attenuate high frequency signals and add artifactual components to ...

journal_title：Journal of electrocardiology

authors： Craelius W,Restivo M,el-Sherif N

更新日期：1987-10-01 00:00:00

abstract：:An electrocardiogram is presented which shows sinus rhythm with alternating Wolff-Parkinson-White (preexcitation) pattern. The frequency of intermittent preexcitation and mechanisms for its production are discussed. ...

journal_title：Journal of electrocardiology

authors： Lichstein E,Goyal S,Chadda K,Gupta PK

更新日期：1978-01-01 00:00:00

abstract：BACKGROUND:Periodic repolarization dynamics (PRD) refers to low-frequency oscillations of cardiac repolarization, most likely related to phasic sympathetic activation. Increased PRD is a validated predictor of mortality after myocardial infarction and in ischemic heart disease, but has not been tested in aortic valve s...

journal_title：Journal of electrocardiology

authors： Rizas KD,Zuern CS,Bauer A

更新日期：2017-01-01 00:00:00

abstract：:We present an example of sudden modification in QRS morphology during ventricular pacing inside a scar-related isthmus. This is explained by a "concealed" sudden block in both the orthodromic and antidromic wavefront directions, allowing then the activation to proceed through a now overt antidromic conduction. ...

journal_title：Journal of electrocardiology

authors： Maury P,Rollin A,Sellal JM,Duparc A,Mondoly P,Cardin C,De Chillou C

更新日期：2016-01-01 00:00:00

abstract：:Heart muscle diseases are traditionally classified according to their peculiar pathophysiologic features such as "dilated," "hypertrophic," "restrictive," and "arrhythmogenic right ventricular" cardiomyopathy. The extraordinary advances accomplished in the last two decades in molecular genetics have allowed the identi...

journal_title：Journal of electrocardiology

authors： Corrado D,Basso C,Thiene G

更新日期：2005-10-01 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