Isolated and complicated left anterior fascicular block: a review of suggested electrocardiographic criteria.

abstract：:High-resolution (HI-RES) ECG analysis software and a new front end have been designed for a standard 12-lead ECG cart, MAC-12. The front end acquires orthogonal ECG at 1,000 samples/sec and 1.2 microV/bit and transmits to the cart. The HI-RES software delineates QRS complexes and correlates them with a template in fre...

journal_title：Journal of electrocardiology

authors： Reddy BR,Christenson DW,Rowlandson GI

更新日期：1988-01-01 00:00:00

abstract：BACKGROUND:Patients hospitalized for suspected acute coronary syndrome (ACS) are at risk for transient myocardial ischemia. During the "rule-out" phase, continuous ECG ST-segment monitoring can identify transient myocardial ischemia, even when asymptomatic. However, current ST-segment monitoring software is vastly unde...

journal_title：Journal of electrocardiology

authors： Pelter MM,Xu Y,Fidler R,Xiao R,Mortara DW,Xiao H

更新日期：2018-01-01 00:00:00

abstract：:Body surface potential mapping was performed in 60 clinical cases and an ideal 0 potential was calculated in each case at 2msec intervals, which corresponds to the potential at infinity. Maximal deviation of the Wilson terminal voltage the ideal potential was 0.14mv on the average. Time course of potential variations ...

journal_title：Journal of electrocardiology

authors： Miyamoto N,Shimizu Y,Nishiyama G,Mashima S,Okamoto Y

更新日期：1995-10-01 00:00:00

abstract：:Prognosis and risk factors for patients age 35years or younger with Brugada syndrome (BrS) were prospectively explored in a sub-analysis of the Japan Idiopathic Ventricular Fibrillation Study (J-IVFS) registry. During the period from February 2002 to January 2011, 69 cases (mean age 30±6years, male=66) of the young (a...

journal_title：Journal of electrocardiology

authors： Hiraoka M,Takagi M,Yokoyama Y,Sekiguchi Y,Aihara N,Aonuma K,Japan Idiopathic Ventricular Fibrillation Study Investigators.

更新日期：2013-07-01 00:00:00

abstract：:Precordial electrocardiographic leads V1, V2, V5, V6, and limb leads I and II were recorded simultaneously utilizing radio transparent electrodes and wire leads during coronary angiography in 35 patients with obstructive coronary disease and in 17 subjects with normal coronary angiograms. The pattern of electrocardiog...

journal_title：Journal of electrocardiology

authors： McCans JL,Castillo HT,Swanick EJ,Marriott HJ

更新日期：1976-01-01 00:00:00

abstract：:We hypothesized that if the right atrial circuit during isthmus dependent atrial flutter provides the dominant contribution to the surface electrocardiogram (ECG), the three-dimensional vector loop of the flutter waves would primarily be in a plane approximately parallel to the tricuspid ring. Twenty vectorcardiograms...

journal_title：Journal of electrocardiology

authors： Ng J,Sahakian AV,Fisher WG,Swiryn S

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND:In a minority of the patients presenting with ST-segment elevation (STE) myocardial infarction (MI), electrocardiogram (ECG) may show a balanced STE in both anterior and inferior lead groups and may cause diagnostic confusion about involved myocardial territory. In this study, we sought ECG clues which may f...

journal_title：Journal of electrocardiology

authors： Bozbeyoğlu E,Aslanger E,Yıldırımtürk Ö,Şimşek B,Karabay CY,Türer A,Kozan Ö,Değertekin M

更新日期：2018-01-01 00:00:00

abstract：:A low-cost micro-processor combined with a standard 3-channel electrocardiographic recorder was adapted to polar coordinate conversion of Frank orthogonal lead signals and display of the resultant polarcardiogram. The processor also functions as a computer of average transients for the ECG complexes and provides autom...

journal_title：Journal of electrocardiology

authors： Grant ME,Hanson JS

更新日期：1982-01-01 00:00:00

abstract：:Sintered Ag-AgCl needle electrodes were used to record unipolar directly coupled (DC) electrograms transmurally from right and left ventricular myocardium. Direct coupling yields unfiltered low-frequency signal content, preserving repolarization waveform morphology. These electrograms were analyzed using completely au...

journal_title：Journal of electrocardiology

authors： Witkowski FX,Penkoske PA

更新日期：1988-08-01 00:00:00

abstract：:To investigate the effects of electrolytes on anterograde conduction via accessory pathways, 12 patients with Wolff-Parkinson-White syndrome received, while in sinus rhythm, intravenous KCl (7 mEq in 200 mL of 0.9% NaCl), MgSO4 (10 mL 20% in 200 mL of 0.9% NaCl), NaCl (0.9%, 200 mL), and procainamide (maximal dose, 10...

journal_title：Journal of electrocardiology

authors： Sideris AM,Galiatsu E,Filippatos GS,Kappos K,Anthopoulos LP

更新日期：1996-01-01 00:00:00

abstract：:Computer analysis of electrocardiograms (ECGs) provides a large amount of ECG measurement data, which may be used for diagnostic classification and storage in ECG databases. Until now, neither error limits for ECG measurements have been specified nor has their influence on diagnostic statements been systematically inv...

journal_title：Journal of electrocardiology

authors： Zywietz C,Celikag D,Joseph G

更新日期：1996-01-01 00:00:00

abstract：:This contribution demonstrates some applications of the most recent release of ECGSIM, an interactive simulation program that enables the user to study the relationship between the electric current sources of the heart and the resulting electrocardiographic signals on the body surface as well as those on the surface o...

journal_title：Journal of electrocardiology

authors： van Oosterom A,Oostendorp TF,van Dam PM

更新日期：2011-09-01 00:00:00

abstract：:A wide spectrum of types of right bundle branch block (RBBB) were studied utilizing the body surface potential maps (BSPMs) of 37 children. Although the spectrum varied from very advanced RBBB to minimal partial RBBB, a common diagnostic feature was the absence of evidence for right ventricular breakthrough in the map...

journal_title：Journal of electrocardiology

authors： Liebman J,Rudy Y,Diaz P,Thomas CW,Plonsey R

更新日期：1984-10-01 00:00:00

abstract：OBJECTIVES:To define clinical correlates of low voltage isolated to precordial leads on the surface electrocardiogram (ECG). INTRODUCTION:Low voltage (V) on the ECG is defined as QRS V<5mm in all limb leads and <10mm in all precordial leads. The diagnostic use of ECGs with low voltage isolated to the precordial leads ...

journal_title：Journal of electrocardiology

authors： Kim DH,Verdino RJ

更新日期：2017-01-01 00:00:00

abstract：BACKGROUND:Presence of severe autonomic failure (SAF), defined as coincidence of abnormal heart rate turbulence and abnormal deceleration capacity, identifies a group of patients with very poor prognosis among post-infarction patients with diabetes mellitus. However, factors contributing to development of SAF are entir...

journal_title：Journal of electrocardiology

authors： Zuern CS,Rizas K,Eick C,Sterz K,Gawaz M,Bauer A

更新日期：2012-11-01 00:00:00

abstract：:A 58-year-old woman with a history of multi-origin atrial tachycardia and limb-girdle muscular dystrophy was treated for presyncope caused by pauses in atrial rhythm. A dual-chamber pacemaker was implanted. The low-voltage area extended broadly, but 10-V pacing could not capture the large right atrium, including the r...

journal_title：Journal of electrocardiology

authors： Miki T,Shirayama T,Shiraishi H,Hirao Y,Matoba S

更新日期：2020-01-01 00:00:00

abstract：UNLABELLED:By definition, the electrocardiographic (ECG) patterns of left bundle-branch block (LBBB) represent distinctive changes in duration and shape of the QRS complex caused by intraventricular conduction delay in the left ventricle (LV) due to structural abnormalities in the His-Purkinje conduction system and/or ...

journal_title：Journal of electrocardiology

authors： Bacharova L,Szathmary V,Mateasik A

更新日期：2011-11-01 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：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：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：:The long-term goal of electrocardiography is to relate electric potentials on the body surface with activities in the heart. Many previously reported studies have focused on direct links between heart and body surface potentials. The goals of this study were first to validate computational methods of determining volum...

journal_title：Journal of electrocardiology

authors： Ni Q,MacLeod RS,Punske BB,Taccardi B

更新日期：2000-01-01 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：UNLABELLED:Cardiac function management devices, including implantable pacemakers and implantable defibrillators, include at least 1 cardiac lead having an electrode for making contact with a portion of the heart. It has been previously shown that the braided multifilament wire electrodes have a high failure rate both f...

journal_title：Journal of electrocardiology

authors： Lobodzinski SS,Laks M

更新日期：2009-11-01 00:00:00

abstract：:A 53-year-old man with myocardial infarction was found to have frequent premature ventricular beats. The predominant pattern was classical concealed trigeminy; i.e., the number of conducted sinus beats, S, between extrasystoles satisfied the equation S = 3n + 2, where "n" is zero or any positive integer. Two other tra...

journal_title：Journal of electrocardiology

authors： Medeiros CM,Medeiros NP,de Nonohay NC,Rodrigues R

更新日期：1985-10-01 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：:A retrospective study was conducted to define the incidence of ventricular ectopic beats with exit block (concealed extrasystoles). Of 904 Holter recordings, 92 were admitted for study on the basis of sufficient ventricular ectopic beats on rhythm strips. Concealed bigeminy conforming to the equation of S = 2n - 1 (wh...

journal_title：Journal of electrocardiology

authors： Anderson GJ,Greenspan M

更新日期：1983-04-01 00:00:00

abstract：BACKGROUND:Performance of ambulatory electrocardiography (AECG) may provide data useful for counseling patients regarding prognosis and for selecting potential patients for defibrillator implantation, but this practice remains controversial. METHODS:We reviewed clinical and AECG data on 355 patients diagnosed with dil...

journal_title：Journal of electrocardiology

authors： Baker RL,Koelling TM

更新日期：2005-01-01 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：:Exercise testing was evaluated in 51 patients with critical left coronary artery disease (LCA) documented by coronary arteriography within two weeks of their bicycle ergometer (26 patients) or treadmill (25 patients) electrocardiographic study. Adequate tests, as defined by the patient having reached 85% of predicted ...

journal_title：Journal of electrocardiology

authors： Timmis GC,Westveer DC,Gordon S,Ramos RG,Gangadharan V

更新日期：1979-07-01 00:00:00

abstract：:A common basis of orthogonal waveform functions was derived from 128 lead body surface potential maps of 405 subjects. Twelve such orthogonal functions or frames were adequate for reconstruction of original ECGs from the beginning of QRS to the end of T. A larger number of frames (18) was required when basis functions...

journal_title：Journal of electrocardiology

authors： Kornreich F,Rautaharju PM,Warren JW,Horacek BM,Dramaix M

更新日期：1985-10-01 00:00:00