The dominant T wave.

abstract：:A comparison was performed between the points measured using the Selvester QRS scoring system in 60 electrocardiograms (ECGs) displayed in both a standard format as well as a 4-fold magnified (quad-plot) format. Fifty criteria (a maximum possibility of 31 points) were evaluated in each ECG. The data indicate that in 5...

journal_title：Journal of electrocardiology

authors： Wagner GS,Greenfield JC Jr,Rembert JC,Warren JW,Albano A,Palmeri MA,Horácek BM

更新日期：2007-07-01 00:00:00

abstract：:Strength-interval curves and conduction times were determined in anesthetized dogs during and following myocardial ischemia using a computerized system capable of determining a 5 point strength-interval curve with conduction times within 20 seconds. At the peak incidence of ligation arrhythmias (5 minutes of ischemia)...

journal_title：Journal of electrocardiology

authors： Avitall B,Naimi S,Levine HJ,Mieszala J

更新日期：1979-07-01 00:00:00

abstract：:Ventricular fibrillation (VF) is the most common arrhythmia leading to sudden cardiac death, but in rare cases VF can manifest as a syncope, provided that it will self-terminate. We present a case of a 45-year old female with a history of unexplained syncopal episodes despite exhaustive diagnostics. Implantable loop r...

journal_title：Journal of electrocardiology

authors： Przyżycka P,Kałowski M,Poddębska I,Kaczmarek K,Ptaszyński P,Wranicz JK,Cygankiewicz I

更新日期：2018-01-01 00:00:00

abstract：:We report a case of 54-year-old man who presented to hospital with severe prolonged retrosternal chest pain of anginal nature. Electrocardiogram taken by his general practitioner showed minimal ST elevation in chest leads V1 and V2; there was also marked right axis deviation of P wave (negative in lead I and aVL) and ...

journal_title：Journal of electrocardiology

authors： Khalil S,Kamal A,Ahmed S

更新日期：2005-10-01 00:00:00

abstract：BACKGROUND:While J-waves were observed in healthy populations, variations in their reported incidence may be partly explicable by the ECG filter setting. METHODS:We obtained resting 12-lead ECG recordings in 665 consecutive patients and enrolled 112 (56 men, 56 women, mean age 59.3±16.1years) who manifested J-waves on...

journal_title：Journal of electrocardiology

authors： Nakagawa M,Tsunemitsu C,Katoh S,Kamiyama Y,Sano N,Ezaki K,Miyazaki H,Teshima Y,Yufu K,Takahashi N,Saikawa T

更新日期：2014-01-01 00:00:00

abstract：:Reliable cardiovascular (CV) risk assessment by a noninvasive tool would be of great value for CV event prevention. The present study consists of 187 coronary artery disease patients with 8 years of follow-up. Eight vectorcardiographic parameters characterizing different aspects of ventricular repolarization were anal...

journal_title：Journal of electrocardiology

authors： Rubulis A,Bergfeldt L,Rydén L,Jensen J

更新日期：2010-07-01 00:00:00

abstract：:Prognosis and risk factors for patients age 35years or younger with Brugada syndrome (BrS) were prospectively explored in a sub-analysis of the Japan Idiopathic Ventricular Fibrillation Study (J-IVFS) registry. During the period from February 2002 to January 2011, 69 cases (mean age 30±6years, male=66) of the young (a...

journal_title：Journal of electrocardiology

authors： Hiraoka M,Takagi M,Yokoyama Y,Sekiguchi Y,Aihara N,Aonuma K,Japan Idiopathic Ventricular Fibrillation Study Investigators.

更新日期：2013-07-01 00:00:00

abstract：:An image torso may be viewed as a one-to-one transform of a physical volume conductor to a geometric form which defines both the axis and sensitivity of any electrocardiographic connection. In this report, the image surfaces of laminar, spherical, rectangular and humanoid physical torsos are explored theoretically and...

journal_title：Journal of electrocardiology

authors： Brody DA,Mirvis DM,Keller FW,Cox JW,Ideker RE

更新日期：1977-01-01 00:00:00

abstract：:The goal of the 2007 PhysioNet/Computers in Cardiology Challenge was to try to establish how well it is possible to characterize the location and extent of old myocardial infarcts using electrocardiographic evidence supplemented by anatomical imaging information. A brief overview of the challenge and how different cha...

journal_title：Journal of electrocardiology

authors： Dawoud F,Wagner GS,Moody G,Horácek BM

更新日期：2008-11-01 00:00:00

abstract：UNLABELLED:Cardiac function management devices, including implantable pacemakers and implantable defibrillators, include at least 1 cardiac lead having an electrode for making contact with a portion of the heart. It has been previously shown that the braided multifilament wire electrodes have a high failure rate both f...

journal_title：Journal of electrocardiology

authors： Lobodzinski SS,Laks M

更新日期：2009-11-01 00:00:00

abstract：:A device has been developed which can be used in conjunction with a direct-writing electrocardiograph to record the high frequency electrocardiogram (ECG) including notches and slurs in the waveform. The device operates on the principle of temporarily storing the QRS complex and then reproducing it at a rate 10 times ...

journal_title：Journal of electrocardiology

authors： Geselowitz DB,Balogh J,Bishop RR

更新日期：1975-07-01 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：OBJECTIVE:The aim of our study was to investigate the value of the transtelephonic electrocardiogram (TTECG) monitoring system during a "blanking period" of 3 months after ablation by analyzing the frequency of atrial arrhythmias episodes and the relationship between the frequency of atrial fibrillation (AF) attacks an...

journal_title：Journal of electrocardiology

authors： Liu J,Fang PH,Hou Y,Li XF,Liu Y,Wang YS,Zhang S

更新日期：2010-11-01 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：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：:A retrospective study was conducted to define the incidence of ventricular ectopic beats with exit block (concealed extrasystoles). Of 904 Holter recordings, 92 were admitted for study on the basis of sufficient ventricular ectopic beats on rhythm strips. Concealed bigeminy conforming to the equation of S = 2n - 1 (wh...

journal_title：Journal of electrocardiology

authors： Anderson GJ,Greenspan M

更新日期：1983-04-01 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：: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：:To elucidate the electrocardiographic (ECG) characteristics of dilated cardiomyopathy (DCM), the authors analyzed the 12-lead ECGs and echocardiograms in 45 patients with DCM, 54 patients with left ventricular (LV) dilatation secondary to valvular heart disease (VHD), 101 hypertensive patients with LV hypertrophy, and...

journal_title：Journal of electrocardiology

authors： Momiyama Y,Mitamura H,Kimura M

更新日期：1994-10-01 00:00:00

abstract：:Morphology of ventricular ectopic complexes was examined in 1,746 ECGs of 149 patients with permanent ventricular pacemakers. In 20 of 80 patients (25%) the morphology of ventricular ectopic complexes was similar to that of the paced complex. This resulted in a ventricular couplet where the spontaneous premature compl...

journal_title：Journal of electrocardiology

authors： Surawicz B,Kuo CS,Reddy CP

更新日期：1980-04-01 00:00:00

abstract：:New developments in instrumentation, in clinical application, as well as in data analysis and visualization have provided new momentum to magnetocardiography (MCG). On one hand robust, easy to use and budget-priced MCG-systems entered the market and are applied to a multi-centred clinical study. On the other hand high...

journal_title：Journal of electrocardiology

authors： Koch H

更新日期：2004-01-01 00:00:00

abstract：:The peak-to-trough amplitude (sum of absolute values of maximum and minimum) of an isointegral QRST body surface map was shown, according to literary data, to be sensitive to changes in ventricular sympathetic tone. Statistics of this parameter were obtained, with an 80 electrodes array, in 135 healthy subjects of bot...

journal_title：Journal of electrocardiology

authors： Ruttkay-Nedecký I,Regecová V

更新日期：2002-10-01 00:00:00

abstract：:Bidirectional tachycardia was observed on Holter tracings recorded from a dog three days after the production of a small freeze lesion on the wall of the left ventricle. A bigeminal rhythm with fixed coupling of ventricular premature contractions was interrupted by a burst of ventricular tachycardia of different morph...

journal_title：Journal of electrocardiology

authors： Klein GJ,Wallace AG,Gallagher JJ

更新日期：1979-01-01 00:00:00

abstract：:The long term prognosis was studied in 50 patients treated for the sick sinus syndrome with pacemaker insertion. The mean age of the patients was 71 years. There were 31 females and 19 males in the series. Nine patients (18%) died during the average follow-up period of 19 months. Dizzy and syncopal episodes were aboli...

journal_title：Journal of electrocardiology

authors： Gould L,Reddy CV,Becker WH

更新日期：1978-01-01 00:00:00

abstract：:The electrophysiologic actions of epinephrine (10(-9) M, 10(-8) M, and 10(-7) M) were evaluated in canine Purkinje fibers pretreated with the class III antiarrhythmic drugs clofilium (10(-7) M) or d,l-sotalol (10(-6) M). Clofilium and d,l-sotalol prolonged action potential duration at 50% and 90% of repolarization wit...

journal_title：Journal of electrocardiology

authors： Patterson E,Scherlag BJ,Szabo B,Lazzara R

更新日期：1997-07-01 00:00:00

abstract：OBJECTIVE:This study was undertaken to evaluate the nature and onset of changes in the QRS complex in the offspring of patients with diabetes mellitus (DM) and metabolic syndrome (MetS). METHODS AND METHODS:A total of 529 subjects, divided into 5 groups, were included in the study: (i) group DM (n = 92), patients with...

journal_title：Journal of electrocardiology

authors： Bacharova L,Krivosikova Z,Wsolova L,Gajdos M

更新日期：2012-05-01 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:As technology infiltrates more of our personal and professional lives, user expectations for intuitive design have driven many consumer products, while medical equipment continues to have high training requirements. Not much is known about the usability and user experience associated with hospital monitoring...

journal_title：Journal of electrocardiology

authors： Fidler R,Bond R,Finlay D,Guldenring D,Gallagher A,Pelter M,Drew B,Hu X

更新日期：2015-11-01 00:00:00

abstract：BACKGROUND:QRS-duration predicts mortality in patients with heart failure and, to a lesser extent, the general population. However, in patients with diabetes, its prognostic significance is unknown. To better understand how QRS-duration relates to mortality among those with diabetes, we explored survival as a function ...

journal_title：Journal of electrocardiology

authors： Singleton MJ,German C,Hari KJ,Saylor G,Herrington DM,Soliman EZ,Freedman BI,Bowden DW,Bhave PD,Yeboah J

更新日期：2020-01-01 00:00:00

abstract：:We report a case of ST segment elevation and PR depression in inferolateral leads in a patient with small bowel occlusion and gastric distension that disappeared immediately after gastric evacuation. Contrary to prior reports, we believe that these ECG changes do not represent an intrinsic cardiac electrical abnormali...

journal_title：Journal of electrocardiology

authors： Mărgulescu AD,Rees E,Richley D,Thomas DE,Smith D

更新日期：2019-01-01 00:00:00