A computerized system for modeling pacemaker rhythms.

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：UNLABELLED:The increased QRS voltage is considered to be a specific electrocardiogram (ECG) sign of left ventricular hypertrophy (LVH), and it is expected that the QRS voltage reflects the increase in left ventricular mass (LVM). However, the increased QRS voltage is only one of QRS patterns observed in patients with L...

journal_title：Journal of electrocardiology

authors： Bacharova L,Szathmary V,Kovalcik M,Mateasik A

更新日期：2010-05-01 00:00:00

abstract：:We evaluate in this paper different strategies for the construction of a statistical shape model (SSM) of the left ventricle (LV) to be used for segmentation in cardiac magnetic resonance (CMR) images. From a large database of LV surfaces obtained throughout the cardiac cycle from 3D echocardiographic (3DE) LV images,...

journal_title：Journal of electrocardiology

authors： Piazzese C,Carminati MC,Colombo A,Krause R,Potse M,Auricchio A,Weinert L,Tamborini G,Pepi M,Lang RM,Caiani EG

更新日期：2016-05-01 00:00:00

abstract：:To assess the effect of pacing drive cycle length on induction of sustained monomorphic ventricular tachycardia, 40 patients were prospectively studied in the drug-free state. Ventricular extrastimuli were sequentially delivered at the same coupling interval at each of three drive cycle lengths (600, 500, and 400 ms) ...

journal_title：Journal of electrocardiology

authors： Mann DE,Florek RC,Reiter MJ

更新日期：1992-01-01 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：: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：:A 65-year old male originally presented with repetitive ventricular bigeminal sequences demonstrating progressive prolongation of successive coupling intervals suggesting Wenckeback-type exit block. An even number distribution of conducted beats always intervened between bigeminal sequences. Subsequent analysis proved...

journal_title：Journal of electrocardiology

authors： Lightfoot PR

更新日期：1978-10-01 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: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：:Intracellular and extracellular recording techniques were used to study triggered activity in tissues isolated from the inferior right atrium of the dog. In the presence of norepinephrine (greater than 10(-7) M) single stimuli or short rapid pacing elicited action potentials with delayed after-depolarizations, leading...

journal_title：Journal of electrocardiology

authors： Lipsius SL

更新日期：1987-01-01 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：:In order to examine the clinical usefulness of the vulnerability map, body surface mapping was performed in ten normal subjects and 32 patients with CAD using dipyridamole infusion to induce ventricular arrhythmias. A vulnerability map and the vulnerability index (VI) proposed by Urie et al. were constructed from QRS ...

journal_title：Journal of electrocardiology

authors： Yasumura S,Kubota I,Ikeda K,Tsuiki K,Yasui S

更新日期：1987-04-01 00:00:00

abstract：BACKGROUND:Measuring repolarization characteristics is challenging and has been reserved for experienced physicians. In electrocardiographic imaging (ECGI), activation-recovery interval (ARI) is used as a measure of local cardiac repolarization duration. We hypothesized that repolarization characteristics, such as loca...

journal_title：Journal of electrocardiology

authors： Blom LJ,Groeneveld SA,Wulterkens BM,van Rees B,Nguyen UC,Roudijk RW,Cluitmans M,Volders PGA,Hassink RJ

更新日期：2020-01-01 00:00:00

abstract：:QT and RR intervals' fluctuations are implicated in the development of malignant arrhythmias. Recent research has quantified repolarization lability using stochastic and linear methods. However, QT-RR intervals are nonlinearly coupled. To this end, QT and RR intervals were extracted from twenty four patients with acut...

journal_title：Journal of electrocardiology

authors： Nahshoni E,Strasberg B,Adler E,Imbar S,Sulkes J,Weizman A

更新日期：2004-07-01 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:The appearance of a discrete upward deflection of the ST segment, termed the ST hump sign during exercise testing has been associated with resting hypertension and exaggerated blood pressure response to exercise. OBJECTIVE:We investigated the correlation between the presence of hump sign during exercise tes...

journal_title：Journal of electrocardiology

authors： Michaelides AP,Raftopoulos LG,Aggeli C,Liakos C,Antoniades C,Fourlas C,Stamatopoulos E,Ioakeimides N,Soulis D,Stefanadis C

更新日期：2010-03-01 00:00:00

abstract：AIMS:To study the effect of electrical neurostimulation on the ST segment shift in patients with ST elevation myocardial infarction (STEMI) with residual ST elevation after primary percutaneous coronary intervention (PCI). METHODS:After primary PCI, 38 patients with STEMI were divided into 2 groups. Group 1 received 1...

journal_title：Journal of electrocardiology

authors： de Vries J,Svilaas T,DeJongste MJ,Nieuwland W,Hoekstra-Mars EW,Zijlstra F

更新日期：2007-11-01 00:00:00

abstract：:Two cases of transient hemiblock occurring during the course of acute myocardial infarction are reported. The transient manifestation permits the accurate evaluation of the diagnostic features of the hemiblocks as modified by acute infarction. One case reflects the development of left bundle branch block due to bilate...

journal_title：Journal of electrocardiology

authors： Schamroth L,Friedberg HD,de Kock J

更新日期：1978-04-01 00:00:00

abstract：AIMS:The objective of the study was to develop normal limits of the ECG in an apparently healthy population of South Asians living in India. METHODS:Three centres contributed to recording 12 lead ECGs on identical digital electrocardiographs. Apparently healthy volunteers were recruited and ECGs were first transferred...

journal_title：Journal of electrocardiology

authors： Macfarlane PW,Lloyd SM,Singh D,Hamde S,Clark E,Devine B,Francq BG,Kumar V

更新日期：2015-07-01 00:00:00

abstract：:The present study was performed to evaluate the specificity of twin peaked P wave (TWPP) for left atrial overload (LOA) in orthogonal ECGs. A total of 2093 ECGs recorded with Frank's corrected orthogonal leads were used for analysis. It can be concluded from the present study that (1) TWPP is diagnostically non-specif...

journal_title：Journal of electrocardiology

authors： Ishikawa K,Pipberger HV

更新日期：1980-04-01 00:00:00

abstract：:Brugada syndrome is characterized by J wave and ST-segment elevation of right precordial leads and causes idiopathic ventricular fibrillation. We experienced a patient of Brugada syndrome with prominent J wave and ST-segment elevation not only in V(1) to V(3) but also in many leads. He suffered spontaneous ventricular...

journal_title：Journal of electrocardiology

authors： Tsunoda Y,Takeishi Y,Nozaki N,Kitahara T,Kubota I

更新日期：2004-10-01 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：: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：:Atrial arrhythmias are diagnosed on the basis of the analysis of P wave morphology, timing and rate, the surface electrocardiogram, and intracardiac recordings. Recent intracardiac studies have demonstrated dissimilar atrial rhythms with direct intra-atrial recordings, the former otherwise not evident on the surface E...

journal_title：Journal of electrocardiology

authors： Martinez EE,Pontes S,dePaola AA,Gomes JA

更新日期：1991-04-01 00:00:00

abstract：:Takotsubo cardiomyopathy (TTC) is characterized by acute and reversible ventricular dysfunction in the absence of significant coronary artery disease, typically triggered by acute emotional or physical stress. In the acute phase of TTC, the electrocardiogram (ECG) shows ST-segment elevation, which rapidly evolves into...

journal_title：Journal of electrocardiology

authors： Zhong-qun Z,Chong-quan W,Nikus KC,Sclarovsky S

更新日期：2013-07-01 00:00:00

abstract：:We studied the use of cardiac magnetic field mapping to detect patients with CAD without subjecting them to stress. Fifty-nine healthy control subjects and 101 patients with CAD without previous MI were included. The optimal positions for detecting CAD were located in the left superior parasternal and in the inferior ...

journal_title：Journal of electrocardiology

authors： Gapelyuk A,Wessel N,Fischer R,Zacharzowsky U,Koch L,Selbig D,Schütt H,Sawitzki B,Luft FC,Dietz R,Schirdewan A

更新日期：2007-09-01 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：: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：:The importance of plasma electrolytes and pH levels in determining heart rate is not yet well grounded. Hemodynamic and biochemical data were collected during 8 purely diffusive hemodialysis, which allowed changes in extracellular fluid to be achieved without eliciting notable changes in the autonomic control of heart...

journal_title：Journal of electrocardiology

authors： Severi S,Cavalcanti S,Mancini E,Santoro A

更新日期：2002-04-01 00:00:00

abstract：:Ventricular tachycardia arising from a healed myocardial infarction scar continues to be a significant cause of morbidity and mortality. Drug therapy has been inadequate to meet this challenge, and implantable devices are limited by expense and technical problems. We have proposed the use of gene therapy for cardiac a...

journal_title：Journal of electrocardiology

authors： Donahue JK,Sasano T,Kelemen K

更新日期：2007-11-01 00:00:00