The effect of phentolamine on intra-Hisian conduction.

abstract：:RBBB tachycardia with NW axis is considered to be VT unless proved otherwise. However underlying conduction system disease can produce electrocardiographic patterns suggestive of bundle branch block with extreme left axis which can cause difficulty in differentiating VT from SVT as in this case. ...

journal_title：Journal of electrocardiology

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

更新日期：2018-01-01 00:00:00

abstract：:Central venous catheters extending into intracardiac chambers can provoke premature atrial and ventricular complexes, which have been reported to initiate supraventricular tachyarrhythmias. These catheters are traditionally placed via the femoral, subclavian, or internal jugular veins. A new alternative to the convent...

journal_title：Journal of electrocardiology

authors： Verdino RJ,Pacifico DS,Tracy CM

更新日期：1996-01-01 00:00:00

abstract：:In this study it is analyzed by linear and non-linear methods, how the control of instantaneous heart rate (IHR) develops in infants in quiet and active sleep. Ten healthy and term newborns were studied during their first half year of life. Low (LF) and high frequency power (HF) of the spectrum, and the largest Lyapun...

journal_title：Journal of electrocardiology

authors： Patzak A

更新日期：1995-10-01 00:00:00

abstract：:The behavior of the sino-atrial mechanism in isorhythmic dissociation (IRD) was studied in 21 patients, nine with spontaneous IRD and 12 with artificially pacemaker-induced IRD following electrode placement for heart block. Successive P-P, R-R and P-R intervals and blood pressure (BP) fluctuations were determined and ...

journal_title：Journal of electrocardiology

authors： Kaplinsky E,Aronson R,Neufeld HN

更新日期：1977-04-01 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：: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：BACKGROUND:Cardiovascular complications are considered a significant problem in patients with chronic kidney disease (CKD). Body surface potential mapping (BSPM) is a noninvasive method that is useful in detecting early changes involving the heart. The aim of the study was to evaluate possible abnormalities within the ...

journal_title：Journal of electrocardiology

authors： Polak-Jonkisz D,Laszki-Szczachor K,Purzyc L,Zwolińska D,Musiał K,Pilecki W,Rusiecki L,Janocha A,Kałka D,Sobieszczańska M

更新日期：2009-03-01 00:00:00

abstract：:The sensitivity of an extensive electrocardiographic examination to local cardiac regions was evaluated by comparison with findings in vectorcardiographic leads. Evaluation consisted of comparing QRS areas during different ventricular activation patterns. The ratio of areas from the vector-cardiogram (VCG) and extensi...

journal_title：Journal of electrocardiology

authors： Abildskov JA

更新日期：1976-01-01 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：:This contribution discusses the dominant T wave, a concept providing an overall view on the repolarization currents of the ventricular myocardium. The dominant T wave is a weighted mean of the T waves on the body surface. It can be estimated from the matrix of sampled observed potentials. The timing of its peak reveal...

journal_title：Journal of electrocardiology

authors： van Oosterom A

更新日期：2004-01-01 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：:Dilated cardiomyopathy is associated with an increase in transverse plane QRS voltage but a decrease in frontal plane QRS voltage. To study this paradoxical relationship further, electrocardiograms (ECGs) were retrospectively analyzed from five groups of men. Frontal plane QRS voltage was computed as the sum of peak-t...

journal_title：Journal of electrocardiology

authors： Goldberger AL,Dresselhaus T,Bhargava V

更新日期：1985-01-01 00:00:00

abstract：BACKGROUND:Conflicting evidence exists on the efficacy of focal impulse and rotor modulation on atrial fibrillation ablation. A potential explanation is inaccurate rotor localization from multiple rotors coexistence and a relatively large (9-11mm) inter-electrode distance (IED) of the multi-electrode basket catheter. ...

journal_title：Journal of electrocardiology

authors： Aronis KN,Ashikaga H

更新日期：2018-01-01 00:00:00

abstract：:Hidden Markov modelling (HMM) is a powerful stochastic modelling technique that has been successfully applied to automatic speech recognition problems. We are currently investigating the application of HMM to electrocardiographic signal analysis with the goal of improving ambulatory ECG analysis. The HMM approach spec...

journal_title：Journal of electrocardiology

authors： Coast DA,Cano GG,Briller SA

更新日期：1990-01-01 00:00:00

abstract：:This article concerns a currently reported hypothesis explaining the alternations of conduction time during intra atrioventricular (AV) nodal reentrant tachycardia (AVNRT). This hypothesis supposes simple mutual influence of sequences of intranodal conduction during reentry tachycardia that use the same circuit in dif...

journal_title：Journal of electrocardiology

authors： Malik M,Camm AJ

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：:Successful curative treatment of right atrial tachycardia (AT) can be obtained provided detailed catheter activation mapping of the target site for radiofrequency energy application has been accomplished. However, right AT mapping may be difficult with a single roving catheter due to infrequent presence or noninducibi...

journal_title：Journal of electrocardiology

authors： SippensGroenewegen A,Roithinger FX,Peeters HA,Linnenbank AC,van Hemel NM,Steiner PR,Lesh MD

更新日期：1998-01-01 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：: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

abstract：BACKGROUND AND PURPOSE:ECG screening of young athletes for risk of sudden cardiac death has grown in popularity throughout the world. The purpose of this study is to assess the technical error rate of ECGs acquired by appropriately trained community volunteers compared to that reported in the literature utilizing train...

journal_title：Journal of electrocardiology

authors： Marek JC,Marek SA,Marek KA,Zimmerman F

更新日期：2015-05-01 00:00:00

abstract：:The JTp interval gained interest as a marker differentiating effects of drugs on cardiac ion channels. For JTp interval, both the beginning - identification of J point and identification of T wave end remains the subject of substantial variability. We aimed to analyze diagnostic and prognostic performance of JTp inter...

journal_title：Journal of electrocardiology

authors： Zareba W,McNitt S,Polonsky S,Couderc JP

更新日期：2017-01-01 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：:In order to differentiate the vectorcardiogram (VCG) in high posterior infarction (HPI) from VCGs of normal subjects, right ventricular hypertrophy (RVH) and primary myocardial disease (PMD), the following criteria were presented; cases satisfying the criteria could be diagnosed as high posterior infarction. In cases ...

journal_title：Journal of electrocardiology

authors： Suzuki K,Toyama S

更新日期：1978-04-01 00:00:00

abstract：:As part of an ongoing research protocol, a patient with Wolff-Parkinson-White syndrome underwent body surface potential mapping and electrophysiologic studies before radiofrequency ablation therapy. Careful analysis of the body surface potential mapping data made it possible to distinguish four different map sequences...

journal_title：Journal of electrocardiology

authors： Lamothe MJ,Stroink G,Gardner MJ

更新日期：1996-04-01 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：BACKGROUND:Atrial fibrillation (AF) and ventricular arrhythmias (VAs) are associated with increased morbidity and mortality. However, data are lacking concerning the association of AF and VAs. This study aimed to clarify the association between AF and VAs and to investigate the effect of amiodarone on the incidence of ...

journal_title：Journal of electrocardiology

authors： Watanabe T,Inoue K,Kashiwase K,Mine T,Hirooka K,Shutta R,Mizuno H,Okuyama Y,Sakata Y,Nanto S,SATISFACTION Investigators.

更新日期：2018-01-01 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 66-year-old woman with a long history of hypertension had an electrocardiogram with giant negative U waves in left precordial leads despite hypokalemia. This seems to be the first report of giant negative U waves induced by uncontrolled hypertension with hypokalemia. The occurrence of negative U waves in the presenc...

journal_title：Journal of electrocardiology

authors： Kanemoto N,Nakayama K,Ide M,Goto Y

更新日期：1992-04-01 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：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