A case of coexisting tachycardia- and bradycardia-dependent bilateral bundle branch block.

abstract：:A 52-year-old woman exhibited Mobitz type II atrioventricular block with right bundle branch block and 1:1 atrioventricular conduction at or slower than 80 beats/min. Electrophysiologic study revealed transient HV interval block followed by recovery from the block at shorter coupling intervals without prolongation of ...

journal_title：Journal of electrocardiology

authors： Ayusawa M,Sakurada H,Hiyoshi Y,Sumitomo N,Okazaki H,Motomiya T,Sugiura M,Hiraoka M

更新日期：1998-01-01 00:00:00

abstract：:Left bundle branch block (LBBB), traditionally viewed as an electrophysiologic abnormality, is increasingly recognized for its profound hemodynamic effects. LBBB causes asynchronous myocardial activation, which, in turn, may trigger ventricular remodeling. Exercise nuclear studies frequently show reversible perfusion ...

journal_title：Journal of electrocardiology

authors： Littmann L,Symanski JD

更新日期：2000-01-01 00:00:00

abstract：:One of the most important components of mechanoelectric coupling is stretch-activated channels, sarcolemmal channels that open upon mechanical stimuli. Uncovering the mechanisms by which stretch-activated channels contribute to ventricular arrhythmogenesis under a variety of pathologic conditions is hampered by the la...

journal_title：Journal of electrocardiology

authors： Trayanova NA,Constantino J,Gurev V

更新日期：2010-11-01 00:00:00

abstract：:A 63 year old man with angina pectoris was found to have frequent extrasystoles separated by odd as well as even numbers of conducted sinus beats. Analysis of 935 conducted sinus beats showed that premature ventricular beats without interpolation were separated by odd numbers of conducted sinus beats in 117 sequences ...

journal_title：Journal of electrocardiology

authors： Bissett JK,Watson JW,Wanta-Matthews M,Ozemek H

更新日期：1982-01-01 00:00:00

abstract：AIM:P-wave dispersion (PD), and duration has been reported to be associated with inhomogeneous and discontinuous propagation of sinus impulses. The aim of this study was to investigate the PD in patients with coronary slow flow (CSF) phenomenon. METHODS:Study population included 48 patients with angiographically prove...

journal_title：Journal of electrocardiology

authors： Dogan SM,Yildirim N,Gursurer M,Aydin M,Kalaycioglu E,Cam F

更新日期：2008-01-01 00:00:00

abstract：:In recent years, it has become increasingly clear that for an important subset of patients with coronary artery disease, many or all of their ischemic episodes are not accompanied by anginal pain. For these patients, it is desirable to detect these ischemic episodes as periods of ST-segment depression on Holter tapes....

journal_title：Journal of electrocardiology

authors： Hubelbank M

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：: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：:The purpose of this study was to describe the effects of gender and age on heart rate variability (HRV) in healthy volunteers (n = 111; 40 men and 71 women) and in persons after sudden cardiac arrest (SCA) (n = 95; 79 men and 16 women). Frequency-domain measurements and six time-domain measurements of HRV (SDANN, 24-h...

journal_title：Journal of electrocardiology

authors： Cowan MJ,Pike K,Burr RL

更新日期：1994-01-01 00:00:00

abstract：:His bundle electrograms of 40 patients developing Wenckebach block during atrial pacing and four with spontaneous Wenckebach block above the His were reviewed to determine the frequency of classical Wenckebach periodicity. Thirty patients had 143 Wenckebach cycles that were suitable for analysis. Cycles were evaluated...

journal_title：Journal of electrocardiology

authors： Friedman HS,Gomes JA,Haft JI

更新日期：1975-01-01 00:00:00

abstract：:The dominant T wave (DTW) reflects the derivative of the repolarization phase of the transmembrane potential of myocytes. T-wave alternans (TWA) is defined as an alteration of this repolarization that repeats every other beat. We investigate if the DTW can offer new insight on TWA. We first proved that the DTW estimat...

journal_title：Journal of electrocardiology

authors： Mainardi L,Sassi R

更新日期：2011-03-01 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：: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：: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：:The widespread clinical application of implantable electrical defibrillation devices has engendered considerable interest into the mechanism of action of such devices. In addition, better means of rapid detection of postshock efficacy have been sought. The authors performed this study to test the following hypotheses:...

journal_title：Journal of electrocardiology

authors： Witkowski FX,Penkoske PA

更新日期：1990-01-01 00:00:00

abstract：:We present a case of an anterior ST-segment elevation acute coronary syndrome secondary to occlusion of a non-dominant right coronary artery. Usually, an anterior ST-segment elevation corresponds to a left anterior descending artery occlusion; however, in rare cases it can be secondary to a non-dominant right coronary...

journal_title：Journal of electrocardiology

authors： Cecconi A,Gonzalez Bartol E,Bastante T,Jimenez-Borreguero LJ,Alfonso F

更新日期：2018-01-01 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：: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：:The present study describes the successful radiofrequency ablation of an uncommon type of A-V nodal tachycardia. Electroanatomical mapping of the right atria was used to locate the region of the earliest atrial activation and allowed for positioning of the ablation catheter and a successful 25-watt radiofrequency burn...

journal_title：Journal of electrocardiology

authors： Pollak SJ,Dreifus LS

更新日期：2002-01-01 00:00:00

abstract：:Body surface potential mapping is superior to 12-lead electrocardiogram in detection of acute and old myocardial infarctions. We examined the capability of the ST-T integral and T wave to detect exercise-induced ischemia in body surface potential mapping. Body surface potential mapping with 123 channels was recorded i...

journal_title：Journal of electrocardiology

authors： Hänninen H,Takala P,Rantonen J,Mäkijärvi M,Virtanen K,Nenonen J,Katila T,Toivonen L

更新日期：2003-04-01 00:00:00

abstract：BACKGROUND:Elevated levels of N-terminal pro brain natriuretic peptide (NT-proBNP) are associated with adverse cardiovascular outcome after ST elevation myocardial infarction (STEMI). We hypothesized that decreasing acuteness-score (based on the electrocardiographic score by Anderson-Wilkins acuteness score of myocardi...

journal_title：Journal of electrocardiology

authors： Fakhri Y,Schoos MM,Sejersten M,Ersbøll M,Valeur N,Køber L,Hassager C,Wagner GS,Kastrup J,Clemmensen P

更新日期：2017-01-01 00:00:00

abstract：:The myocardial electrical conduction is significantly influenced by the sympathetic and parasympathetic nervous systems. Hypervagotonia refers to increased vagal tone leading to sinus bradycardia, sinus pause, or any degree of atrioventricular (AV) block. There are many clinical, electrocardiographic, and electrophysi...

journal_title：Journal of electrocardiology

authors： Oghlakian G,Correia J

更新日期：2009-11-01 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:An association between paroxysmal supraventricular tachycardias (PSVT) and elevated cardiac troponin I (cTnI) has been reported in small studies, even in the absence of significant coronary artery or structural heart disease. We sought to explore the prognostic significance of elevated cTnI among patients pr...

journal_title：Journal of electrocardiology

authors： Ghersin I,Zahran M,Azzam ZS,Suleiman M,Bahouth F

更新日期：2020-01-01 00:00:00

abstract：INTRODUCTION:Measures of heart rate variability (HRV) can be divided in time domain and frequency domain parameters. It is frequently ignored that estimation of frequency-domain parameters is a 2-step procedure where statistical error from the first step (spectral estimation) is neglected in subsequent analyses. METHO...

journal_title：Journal of electrocardiology

authors： Kuss O,Schumann B,Kluttig A,Greiser KH,Haerting J

更新日期：2008-07-01 00:00:00

abstract：:In the last 10 years the molecular substrate of a diversity of primary electrical diseases has been unraveled. Disease-causing mutations in ion-channel genes have been identified and have challenged clinical and basic electrophysiologists to mechanistically link the observed genetic aberrancies to the phenotype. Indee...

journal_title：Journal of electrocardiology

authors： Wilde AA,van den Berg MP

更新日期：2005-10-01 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：:We present a case of a woman with an asymptomatic intermittent 2:1 atrioventricular block. The baseline ECG showed a wide QRS with right bundle branch block pattern. Measurement of the HV interval during electrophysiological study was normal. During electrophysiological stimulation, a unique pattern of paradoxical con...

journal_title：Journal of electrocardiology

authors： Danon A,Elitzur Y,Singh SM

更新日期：2017-01-01 00:00:00

abstract：:Forty-three patients with their first acute inferior wall myocardial infarction (IWMI) were divided into three groups according to the R/Q ratio in standard lead II. This was done to correlate these groups with the characteristic course of electrocardiographic stages. The R/Q ratio was measured on the ninth day of fol...

journal_title：Journal of electrocardiology

authors： Klainman E,Sclarovsky S,Mager A,Topaz O,Agmon J

更新日期：1988-11-01 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