A simulation study of Torsade de Pointes with M cells.

abstract：BACKGROUND:Data are limited on long-term associations of favorable cardiovascular risk profile (i.e., low-risk) and changes in risk profile with ECG abnormality development. METHODS:The Chicago Healthy Aging Study (CHAS) involved re-examination of 1395 participants, ages 65-84 years in 2007-10, free of baseline major ...

journal_title：Journal of electrocardiology

authors： Vu TT,Daviglus ML,Liu K,Allen NB,Garside DB,Lloyd-Jones DM

更新日期：2018-01-01 00:00:00

abstract：:Unexplained sudden deaths following use of pentavalent antimonial drugs have been described, presumably owing to ventricular arrhythmias. A patient is reported with QT interval prolongation and syncopal episodes related to torsade de pointes following treatment of visceral leishmaniasis with meglumine antimoniate. Thi...

journal_title：Journal of electrocardiology

authors： Ortega-Carnicer J,Alcázar R,De la Torre M,Benezet J

更新日期：1997-04-01 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：:A 53-year-old woman with sinus node dysfunction underwent dual-chamber pacemaker implantation through a persistent left superior vena cava draining into the coronary sinus, which was detected at the time of implantation. We managed to fix the ventricular lead in the right ventricular (RV) apex by forming a clockwise l...

journal_title：Journal of electrocardiology

authors： Chen TE,Wang CC,Satish OS,Wu D

更新日期：2007-11-01 00:00:00

abstract：BACKGROUND:Several parameters of heart rate variability (HRV) have been shown to predict the risk of sudden cardiac death (SCD) in cardiac patients. There is consensus that risk prediction is increased when measuring HRV during specific provocations such as orthostatic challenge. For the first time, we provide data on ...

journal_title：Journal of electrocardiology

authors： Schäfer D,Nil M,Herzig D,Eser P,Saner H,Wilhelm M

更新日期：2015-07-01 00:00:00

abstract：:An asymptomatic 19-year-old top-level athlete had electrocardiographic evidence of intermittent cardiac preexcitation and intermittent left bundle branch block. The electrophysiologic study demonstrated the presence of a direct accessory pathway and enhanced atrioventricular node conduction that resulted in infrahisia...

journal_title：Journal of electrocardiology

authors： Buja G,Canciani B,Martini B,Scognamiglio R,Corrado D,Nava A

更新日期：1991-01-01 00:00:00

abstract：:An analytical study was performed to estimate the magnitude of the visual Q wave duration bias produced by pressurized ink round stylus electrocardiographic (ECG) recorders. With a paper speed of 25 mm/sec and the ECG tracing width of 0.25 mm, the visually measured Q waves are on the average 8 msec too short. The corr...

journal_title：Journal of electrocardiology

authors： Rautaharju PM,Seale D,Prineas R,Wolf H,Crow R,Warren J

更新日期：1978-10-01 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：: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

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：:A patient who had chronic coarse atrial fibrillation developed severe hyperkalemia accompanied by total loss of fibrillatory waves while an irregularly irregular ventricular rhythm persisted. Correction of hyperkalemia resulted in prompt return of coarse atrial fibrillation. This sequence of events renders strong supp...

journal_title：Journal of electrocardiology

authors： Bashour TT,Cheng TO

更新日期：1975-01-01 00:00:00

abstract：:The authors present a case of trifascicular block: complete right bundle branch block, tachycardia-dependent left anterior hemiblock, and bradycardia-dependent left posterior hemiblock. There is, in addition, a complicating independent AV junctional rhythm that is in most instances not affected by the conducted sinus ...

journal_title：Journal of electrocardiology

authors： Oreto G,Satullo G,Luzza F,Carerj S,Arrigo F,Schamroth L

更新日期：1989-07-01 00:00:00

abstract：:Ventricular fibrillation (VF) had been traditionally considered as a highly disorganized process of random electrical activity emanating from multiple, short-lived, reentrant electrical waves. It is the incessant breakup of wave fronts and the creation of new daughter waves (wavebreaks) that perpetuate VF. Other studi...

journal_title：Journal of electrocardiology

authors： Salama G,Choi BR

更新日期：2007-11-01 00:00:00

abstract：:Magnesium ion infusion has been reported for treatment of hypomagnesemia often associated with myocardial infarction and with surgeries involving cardiopulmonary bypass (CPB). Magnesium infusion before CPB has been reported to adversely affect the ability to defibrillate after CPB. However, there are also reports of m...

journal_title：Journal of electrocardiology

authors： McDaniel WC,Curtis JJ,Walls JT,Madsen RW

更新日期：1998-04-01 00:00:00

abstract：:An extremely rare case of intermittent ventricular parasystolic bigeminy is presented, in which coexisting reentrant ventricular extrasystoles of sinus origin, showing mainly trigeminy, and those of ventricular parasystolic origin, showing a close coupling to the ventricular parasystolic beat, are demonstrated. Such a...

journal_title：Journal of electrocardiology

authors： Izumi K

更新日期：1990-04-01 00:00:00

abstract：BACKGROUND:Accurate detection of QRS complexes during mobile, ultra-long-term ECG monitoring is challenged by instances of high heart rate, dramatic and persistent changes in signal amplitude, and intermittent deformations in signal quality that arise due to subject motion, background noise, and misplacement of the ECG...

journal_title：Journal of electrocardiology

authors： Malik J,Soliman EZ,Wu HT

更新日期：2020-01-01 00:00:00

abstract：:Eight sets of electrocardiographic (ECG) criteria for the localization of accessory conduction pathway (ACP) were evaluated on 182 patients with a single ACP. The Rosenbaum criteria identified 78.6% of the left-sided and 94.0% of the right-sided ACPs. Four of the other seven sets of criteria demonstrated a sensitivity...

journal_title：Journal of electrocardiology

authors： Yuan S,Iwa T,Tsubota M,Bando H

更新日期：1992-07-01 00:00:00

abstract：:The ECG phenomena in 20 outpatients (121 episodes) suffering from variant angina with transient ST segment elevation greater than 1.5 mm. (Prinzmetal angina) were studied by Holter monitoring. The most important changes in the ECG morphology were: a) increased height of the R wave in all cases, b) the S wave decreased...

journal_title：Journal of electrocardiology

authors： Bayes de Luna A,Carreras F,Cladellas M,Oca F,Sagues F,Garcia Moll M

更新日期：1985-07-01 00:00:00

abstract：BACKGROUND:It has been reported in the literature that the increase in body temperature shortens QT interval on electrocardiogram through heart rate modulation. However, the effects of fever on ventricular repolarization are not clearly known. This study elaborates on QT interval of isolated fever, corrected QT (cQT), ...

journal_title：Journal of electrocardiology

authors： Gökçen E,Savrun A

更新日期：2020-12-03 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：:Repetitive nonreentrant ventriculoatrial synchrony during dual-chamber pacing is characterized by long intervals alternating with short intervals. This arrangement activated automatic mode switching in a St Jude dual-chamber pacemaker in which the algorithm requires an atrial sensed event for automatic mode switching ...

journal_title：Journal of electrocardiology

authors： Barold SS,Stroobandt RX,Van Heuverswyn F

更新日期：2012-07-01 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：:Hypertrophic cardiomyopathy (HCM) have been reported to display impaired heart rate variability, although little is known regarding its prognostic value. By using fast Fourier transformation of 24-hour Holter recordings in 73 HCM patients at a stable clinical condition, we computed 4 spectral components: very low freq...

journal_title：Journal of electrocardiology

authors： Kawasaki T,Azuma A,Sakatani T,Hadase M,Kamitani T,Kawasaki S,Kuribayashi T,Sugihara H

更新日期：2003-10-01 00:00:00

abstract：:Thoracic electromaps were recorded before and after sublingual nitroglycerin (NG) in 26 subjects 15 and 30 days after acute myocardial infarction (MI), in order to evaluate the effect of the drug on injury potentials. Ten patients with documented left ventricular aneurysm were also studied 5 to 46 months after acute M...

journal_title：Journal of electrocardiology

authors： De Ambroggi L,Landolina M,Todeschini P,Galdangelo F,Ravizza P

更新日期：1981-10-01 00:00:00

abstract：OBJECTIVE:The objective of this study is to evaluate the incidence, predictors, and outcome of complete ST-segment resolution (STR) during transportation after pretreatment with dual or triple antiplatelet therapy in the Ongoing Tirofiban in Myocardial Infarction Evaluation (On-TIME) 2 trial. METHODS:Patients with ST-...

journal_title：Journal of electrocardiology

authors： Heestermans T,Suryapranata H,ten Berg JM,Mosterd A,Gosselink AT,Kochman W,Dill T,van Houwelingen G,Kolkman E,van Werkum JW,Zijlstra F,Hamm C,van 't Hof AW

更新日期：2011-01-01 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：:The authors comment on the present status of computerized electro-cardiogram (ECG) works in Japan and demonstrate the preliminary tentative results of CSE (common standards for quantitative electrocardiography) data analysis using the Nagoya program. The more detailed results of the performance of several programs in ...

journal_title：Journal of electrocardiology

authors： Okamoto N,Ohsawa N

更新日期：1988-01-01 00:00:00

abstract：:The long QT syndrome is an inherited arrhythmogenic disease characterized by prolongation of QT interval, syncope, and sudden cardiac death because of ventricular tachycardia, mainly in the form of Torsades de Pointes. We present an unusual case of prolonged QT interval and cardiac arrest caused by Torsades de Pointes...

journal_title：Journal of electrocardiology

authors： Liu T,Shehata M,Chang D,Patel JK,Kittleson MM,Kobashigawa JA,Chugh SS,Wang X

更新日期：2011-05-01 00:00:00

abstract：:This study is a descriptive report of the occurrence of ventricular arrhythmias in a large, prospectively designed follow-up study of postcoronary patients. Six-hour Holter recordings were obtained on 954 postinfarction patients prior to hospital discharge and at 4 (n = 837), 8 (n = 762), 12 (n = 713), and 24 (n = 487...

journal_title：Journal of electrocardiology

authors： DeCamilla JJ,Davis HT,Moss AJ

更新日期：1980-04-01 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