Effects of supernormal capture on directly measured nonmodulated parasystolic cycles.

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：: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：:Continuously updated ST-segment recovery analysis has been shown to accurately predict infarct-related artery patency. Salient principles were converted into algorithms and incorporated into a portable ST monitor for optimal application. This study tested the automated program's ability to detect occlusion and reperfu...

journal_title：Journal of electrocardiology

authors： Veldkamp RF,Sawchak S,Pope JE,Califf RM,Krucoff MW

更新日期：1996-10-01 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：: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：BACKGROUND AND PURPOSE:Present methods to extract respiratory myogram interference (RMI) from the Holter-ECG and assess effect of supraventricular arrhythmias (SVAs) onto ECG-based detection of sleep-related breathing disorders (SRBDs) and AHI estimation. METHODS:RMI was quantified as residual energy after ECG cancell...

journal_title：Journal of electrocardiology

authors： Maier C,Dickhaus H

更新日期：2014-11-01 00:00:00

abstract：:Five male patients with chronic stable ventricular arrhythmias underwent a placebo controlled ascending dose study with oral cibenzoline, a new type 1 antiarrhythmic drug. Ambulatory ECG (Holter) recordings and electrophysiologic studies were done while on placebo and on the maximum dose of cibenzoline. Drug toxicity,...

journal_title：Journal of electrocardiology

authors： Kushner M,Magiros E,Peters R,Carliner N,Plotnick G,Fisher M

更新日期：1984-01-01 00:00:00

abstract：:The contributions of reduced conduction velocity (CV) and prolonged action potential duration (APD) to QT interval prolongation and T wave and T vector loop morphology in left ventricular hypertrophy (LVH) were studied using an analytical computer model. Three types of anatomic LVH were simulated: concentric and eccen...

journal_title：Journal of electrocardiology

authors： Bacharova L,Szathmary V,Mateasik A

更新日期：2010-11-01 00:00:00

abstract：:Initial electrical forces emanating from interventricular septal depolarization, being directed to the right and anteriorly, normally produce an initial negative deflection or Q wave in leads I, aVL and V6 and an initial positive deflection or R wave in leads V1 and V2. The observations of hypertrophied interventricul...

journal_title：Journal of electrocardiology

authors： Das G,Collins J,Weissler AM

更新日期：1981-01-01 00:00:00

abstract：AIM:To evaluate the diagnostic accuracy of electrocardiographic inferior Q waves persistence during inspiration and echocardiographic segmental wall motion abnormalities for the detection of previously unsuspected silent myocardial infarction, by using cardiac magnetic resonance as the gold standard. METHODS:We prospe...

journal_title：Journal of electrocardiology

authors： Nanni S,Lovato L,Vagnarelli F,Ghetti G,Ferlito M,Pasquale F,Russo V,Zompatori M,Bacchi Reggiani L,Semprini F,Taglieri N,Melandri G,Rapezzi C

更新日期：2016-01-01 00:00:00

abstract：:The left ventricle (LV) plays a central role in the maintenance of health of children and adults due to its role as the major pump of the heart. In cases of LV dysfunction, a significant percentage of affected individuals develop signs and symptoms of congestive heart failure, leading to the need for therapeutic inter...

journal_title：Journal of electrocardiology

authors： Towbin JA,Bowles NE

更新日期：2001-01-01 00:00:00

abstract：:One-to-two atrioventricular conduction, ie, the double response to a single sinus or atrial impulse, resulting in two QRS complexes for one P wave, is a rare manifestation of dual atrioventricular (AV) nodal pathways. This report describes the case of a 61-year-old woman with continuous episodes of supraventricular ta...

journal_title：Journal of electrocardiology

authors： Fraticelli A,Saccomanno G,Pappone C,Oreto G

更新日期：1999-10-01 00:00:00

abstract：:Considerable efforts have been invested recently to improve electrocardiographic (ECG) classification accuracy for left ventricular hypertrophy (LVH). This study examines how LVH classification accuracy is influenced by (1) the selection of an echocardiographic standard for LVH, (2) LVH severity level in the test grou...

journal_title：Journal of electrocardiology

authors： Rautaharju PM,Zhou SH,Park LP

更新日期：1996-01-01 00:00:00

abstract：:Normal pacemaker and defibrillator function can occasionally mimic device malfunction. A thorough understanding of timing cycles and familiarity with company-specific pacing algorithms can often avoid unnecessary confusion. ...

journal_title：Journal of electrocardiology

authors： Ortman M

更新日期：2012-11-01 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：BACKGROUND:Brugada syndrome (BrS) is an inherited ion channelopathy that may predispose affected individuals to atrial cardiomyopathy. We tested the hypothesis that BrS patients have higher degrees of atrial electrophysiological abnormalities compared to controls, and these can be reflected by changes in P-wave paramet...

journal_title：Journal of electrocardiology

authors： Tse G,Reddy S,Chopra J,Lee S,Liu T,Bazoukis G,Haseeb S,Lee APW,Letsas KP,Li KHC

更新日期：2019-01-01 00:00:00

abstract：:A 57-year-old man without prior history of organic heart disease was admitted with a diagnosis of unstable angina because of chest pain and new electrocardiographic (ECG) changes of global T wave inversion and QT interval prolongation. Left and right heart catheterization with coronary angiography, pulmonary angiograp...

journal_title：Journal of electrocardiology

authors： Lui CY

更新日期：1993-01-01 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：:For the past several years ECRI Institute has published a list of Top Ten Health Technology Hazards. This list is based on ECRI's extensive research in health technology safety and on data provided to its problemreporting systems. For every year that the Top Ten list has been published, Alarm Hazards have been at or n...

journal_title：Journal of electrocardiology

authors： Keller JP Jr

更新日期：2012-11-01 00:00:00

abstract：:In order to compare the prevalence of electrocardiographic (ECG) abnormalities suggestive of right ventricular hypertrophy in native and immigrant populations residing at high altitude, a retrospective review was undertaken of data obtained from a random survey of healthy volunteers and persons with chronic mountain s...

journal_title：Journal of electrocardiology

authors： Halperin BD,Sun S,Zhuang J,Droma T,Moore LG

更新日期：1998-07-01 00:00:00

abstract：BACKGROUND:Analysis of ST-segment elevation for assessment of patients with suspected acute coronary occlusion is in widespread use for diagnostic and prognostic purposes. In this study, changes in the QRS complex also were analyzed to determine if these changes that are seldom used clinically can provide additional pr...

journal_title：Journal of electrocardiology

authors： Weston P,Johanson P,Schwartz LM,Maynard C,Jennings RB,Wagner GS

更新日期：2007-01-01 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:The ventricular repolarization (VR) response to short-lasting coronary occlusion has been characterized by 3-dimensional vectorcardiography during angioplasty in humans; the T-vector loop becomes distorted (increased T(avplan)) and more circular (decreased T(eigenvalue)), but these changes have not been rela...

journal_title：Journal of electrocardiology

authors： Odenstedt J,Rubulis A,Grip L,Bergfeldt L

更新日期：2009-05-01 00:00:00

abstract：BACKGROUND:Hibernating myocardium develops inhomogeneity in myocardial sympathetic innervation with spontaneous sudden cardiac death (SCD) because of ventricular fibrillation (VF). The triggers and prodromal arrhythmias initiating SCD in this substrate are unknown. METHODS:Swine chronically instrumented with a proxima...

journal_title：Journal of electrocardiology

authors： Pizzuto MF,Valverde AM,Heavey BM,Banas MD,Michelakis N,Suzuki G,Fallavollita JA,Canty JM Jr

更新日期：2006-10-01 00:00:00

abstract：:The objective of this study is to assess the performance of patient-specific segment-specific (PSSS) synthesis in QRST complexes using CAVIAR, a new method of the serial comparison for electrocardiograms and vectorcardiograms. A collection of 250 multi-lead recordings from the Common Standards for Quantitative Electro...

journal_title：Journal of electrocardiology

authors： Scherer JA,Rubel P,Fayn J,Willems JL

更新日期：1992-01-01 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：:Although solid angle analysis has been considered to be reasonable for explaining the distribution of ST segment deviation following ischemia, it has not been tested fully, especially for ST segment changes in various sites at different lead surfaces. Thus, we investigated the applicability of solid angle theory to th...

journal_title：Journal of electrocardiology

authors： Maehara K,Kyono H,Kitaoka S,Shimizu Y,Maruyama Y,Ashikawa K,Ino-Oka E,Takishima T

更新日期：1986-07-01 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：:Sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM) is caused by ventricular tachyarrhythmia that can be effectively treated by implantable cardioverter defibrillator (ICD) therapy. We report of a 28-year-old man with HCM and a dual chamber ICD, originally implanted for primary prevention of SCD, (programm...

journal_title：Journal of electrocardiology

authors： Alnsasra H,Konstantino Y,Bereza S,Haim M

更新日期：2017-01-01 00:00:00

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