abstract：:Placement of the precordial electrodes for recording a 12-lead electrocardiogram (ECG) is subject to variation. Previous research has shown that displacement, especially in the longitudinal direction, can lead to changes in diagnosis. In practice, both the displacement and the effects of displacement on an individual ...

journal_title：Journal of electrocardiology

authors： Schijvenaars RJ,Kors JA,van Herpen G,van Bemmel JH

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：:The authors have proposed a new four-step screening algorithm to detect asymptomatic coronary artery disease (CAD) in flight school candidates, cadets, and rated flyers of the Unites States Air Force (USAF). In step 1, the USAF Armstrong Laboratory (USAF/AL) risk profile and improved 16-lead high-resolution electrocar...

journal_title：Journal of electrocardiology

authors： Selvester RH,Ahmed J,Tolan GD

更新日期：1996-01-01 00:00:00

abstract：:Catheter ablation procedures are performed by highly trained and experienced cardiology subspecialists. Yet the massive amount of data produced during these procedures creates a data overload problem that can impede the performance of even the best practitioners. This may be evidenced by (1) overlooking important sign...

journal_title：Journal of electrocardiology

authors： Tong DA,Widman LE

更新日期：1996-01-01 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：: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：: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：:Information from 24-hour monitoring with on-line vectorcardiography, starting immediately after admission, was compared with results from a predischarge exercise test 3-13 days after admission. A total of 169 patients with acute myocardial infarction and 73 patients with unstable angina pectoris were investigated. Pat...

journal_title：Journal of electrocardiology

authors： Lundin P,Jensen J,Rehnqvist N,Eriksson SV

更新日期：1995-10-01 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：: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：:Electrocardiographic estimation of myocardial injury has, in some studies, correlated poorly with the extent of nuclear perfusion defects at rest and with changes in the left ventricular ejection fraction after acute reperfusion therapy. The authors investigated 16 patients with fatty acid scintigraphy and with the Se...

journal_title：Journal of electrocardiology

authors： Walamies MA,Siitonen SL,Koskinen MO

更新日期：1995-07-01 00:00:00

abstract：:This study employs a bifurcation analysis approach to elucidate the effect of the key ion channels on cardiac arrhythmias and thereby explain the efficacy of antiarrhythmic drugs in controlling arrhythmias. The model used for the analysis contains the key ion channels involved in the ventricular action potential--fast...

journal_title：Journal of electrocardiology

authors： Chay TR

更新日期：1995-01-01 00:00:00

abstract：:The purpose of this experiment is to study the possibility of intra-QRS high-frequency electrocardiographic (HFECG) changes for the evaluation of and recovery from myocardial ischemia in both the time-domain and spectral-turbulence analyses on the signal-averaged ECG using the Holter ECG monitoring (Holter SAECG) syst...

journal_title：Journal of electrocardiology

authors： Yakubo S,Ozawa Y,Komaki K

更新日期：1995-01-01 00:00:00

abstract：:Under healthy conditions, the normal cardiac (sinus) interbeat interval fluctuates in a complex manner. Quantitative analysis using techniques adapted from statistical physics reveals the presence of long-range power-law correlations extending over thousands of heartbeats. This scale-invariant (fractal) behavior sugge...

journal_title：Journal of electrocardiology

authors： Peng CK,Havlin S,Hausdorff JM,Mietus JE,Stanley HE,Goldberger AL

更新日期：1995-01-01 00:00:00

abstract：:To elucidate the electrocardiographic (ECG) characteristics of dilated cardiomyopathy (DCM), the authors analyzed the 12-lead ECGs and echocardiograms in 45 patients with DCM, 54 patients with left ventricular (LV) dilatation secondary to valvular heart disease (VHD), 101 hypertensive patients with LV hypertrophy, and...

journal_title：Journal of electrocardiology

authors： Momiyama Y,Mitamura H,Kimura M

更新日期：1994-10-01 00:00:00

abstract：:The relative contributions of left ventricular structural changes, dysfunction, and subendocardial ischemia in determining electrocardiographic repolarization abnormalities were assessed in 53 patients with chronic, pure aortic regurgitation and no evidence of coronary artery disease. Thirty-six patients with an abnor...

journal_title：Journal of electrocardiology

authors： Badano L,Rubartelli P,Giunta L,Della Rovere F,Miccoli F,Lucatti A

更新日期：1994-07-01 00:00:00

abstract：:Chemical necrosis was produced with the infiltration of 96 degrees alcohol on the middle anterosuperior segment 5 (nomenclature of the International Society for Computerized Electrocardiology) of the free left ventricular (LV) wall in 45 dogs and on the apical segment 10 and middle posterolateral segment 11 in 30 othe...

journal_title：Journal of electrocardiology

authors： Medrano GA,de Micheli A

更新日期：1994-07-01 00:00:00

abstract：:In treating atrial fibrillation (AF) the goal of ventricular rate reduction is still not determined. An animal model of AF was developed in which the relationship between ventricular rate and the parameters of cardiac function in AF can be studied. To simulate AF, complete heart block was chemically produced on open-c...

journal_title：Journal of electrocardiology

authors： Liau CS,Chen MF,Lin FY,Tsai CH,Lee YT

更新日期：1994-04-01 00:00:00

abstract：:The authors present a patient who initially underwent anterior approach atrioventricular (AV) nodal modification for treatment of typical AV junctional reentrant tachycardia (AVJRT) and subsequently developed clinical episodes of a previously undocumented type of supraventricular tachycardia. Findings during electroph...

journal_title：Journal of electrocardiology

authors： Goldberger J,Ehlert F,Baerman J,Kadish A

更新日期：1994-01-01 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：:Percutaneous radiofrequency catheter ablation (RFCA) has a very high success rate for certain arrhythmias, such as Wolff-Parkinson-White syndrome and idiopathic ventricular tachycardias in the right ventricular outflow tract. These arrhythmias are typically characterized by a single site of arrhythmogenic tissue that ...

journal_title：Journal of electrocardiology

authors： Moorman JW,Melen RE,Skillicorn B,Solomon EG

更新日期：1994-01-01 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 authors present an original method for the discrimination of patients prone to ventricular tachycardia. The wavelet transform, which is a new time-scale technique suitable for transient signal detection, was applied to bipolar unfiltered X, Y, Z signal-averaged electrocardiograms in 20 postinfarction patients with...

journal_title：Journal of electrocardiology

authors： Morlet D,Peyrin F,Desseigne P,Touboul P,Rubel P

更新日期：1993-10-01 00:00:00

abstract：:The authors investigated 244 consecutive patients with suspected coronary artery disease by coronary angiography and quantitative left ventriculography to compare the Minnesota Q/QS code (MC) with clinical electrocardiographic (ECG) interpretation. Patients who were suspected to have wall motion abnormalities for reas...

journal_title：Journal of electrocardiology

authors： Heinbuch S,Koenig W,Gehring J

更新日期：1993-04-01 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：:This study describes a method for improving the day-to-day and minute-to-minute repeatability of the deterministic computer-assisted diagnosis of left ventricular hypertrophy. Conventional upper limits of normal for many age-dependent electrocardiographic parameters have been replaced by continuous equations, thereby,...

journal_title：Journal of electrocardiology

authors： McLaughlin SC,Aitchison TC,Macfarlane PW

更新日期：1993-01-01 00:00:00

abstract：:Professional groups, endorsed by individual cardiologists involved in the practice of electrocardiology, have recently issued official policy statements declaring that there is no computer program for electrocardiographic interpretation that can replace interpretation by a skilled physician, and consequently, all comp...

journal_title：Journal of electrocardiology

authors： Rautaharju PM

更新日期：1993-01-01 00:00:00

abstract：:In 19 pentobarbital anesthetized dogs subjected to right thoracotomy, plunge wire and catheter electrodes were positioned to record and pace from the high right atrium, coronary sinus os, aortic root (for His bundle electrograms), and the right ventricular outflow tract and apex. A deflectable-tip catheter electrode w...

journal_title：Journal of electrocardiology

authors： Scherlag BJ,Munsif A,Nakagawa H,Hirao K,Lazzara R

更新日期：1993-01-01 00:00:00

abstract：:The authors have investigated potential applications of artificial neural networks for electrocardiographic QRS detection and beat classification. For the task of QRS detection, the authors used an adaptive multilayer perceptron structure to model the nonlinear background noise so as to enhance the QRS complex. This p...

journal_title：Journal of electrocardiology

authors： Hu YH,Tompkins WJ,Urrusti JL,Afonso VX

更新日期：1993-01-01 00:00:00

abstract：:Standard 12-lead electrocardiograms with a Q wave in lead V1 were obtained from 32 subjects without organic cardiac disease and analyzed for features that might characterize an abnormal atrioventricular conduction through the fasciculoventricular Mahaim fiber. Following an infusion of ajmaline, the Q wave in V1 vanish...

journal_title：Journal of electrocardiology

authors： Miyaguchi K,Tsuzuki J,Yokota M,Hayashi H

更新日期：1992-10-01 00:00:00

abstract：:The efficacy and safety of autodecremental pacing (ADP) to interrupt ventricular tachycardia (VT) and atrial flutter was examined. Once tachycardia was recognized, ADP was initiated using a short train of stimuli with gradual shortening (3%) of the interstimulus interval. ADP was applied to 13 consecutive patients dur...

journal_title：Journal of electrocardiology

authors： Waksman R,Pollack A,Berkovits BV,Nassar H,Gotsman MS,Hasin Y

更新日期：1992-10-01 00:00:00

abstract：:Eight sets of electrocardiographic (ECG) criteria for the localization of accessory conduction pathway (ACP) were evaluated on 182 patients with a single ACP. The Rosenbaum criteria identified 78.6% of the left-sided and 94.0% of the right-sided ACPs. Four of the other seven sets of criteria demonstrated a sensitivity...

journal_title：Journal of electrocardiology

authors： Yuan S,Iwa T,Tsubota M,Bando H

更新日期：1992-07-01 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：: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：:Voltage-sensitive dyes and high resolution optical mapping were used to analyze the characteristics of spiral waves of excitation in isolated ventricular myocardium. In addition, analytical techniques, which have been previously used in the study of the characteristics of spiral waves in chemical reactions, were appli...

journal_title：Journal of electrocardiology

authors： Davidenko JM,Pertsov AM,Salomonsz R,Baxter WP,Jalife J

更新日期：1992-01-01 00:00:00

abstract：:Percutaneous transluminal coronary angioplasty (PTCA) occlusion in five individual coronary artery distributions produced significant ST elevation ("current of injury") in 48/50 PTCAs in 46 patients. Four patients had PTCA of two separate coronary arteries. Two patients had no significant ischemic ST changes in the 16...

journal_title：Journal of electrocardiology

authors： Saetre HA,Selvester RH,Solomon JC,Baron KA,Ahmad J,Ellestad ME

更新日期：1992-01-01 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：: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：:Effects of pirmenol hydrochloride and lidocaine hydrochloride on intraventricular conduction were examined in the infarcted heart of anesthetized dogs. The effects of the drugs on the excitation induced by ventricular stimulations were determined with coupling intervals between 150 and 1,000 ms. Effects of the drugs o...

journal_title：Journal of electrocardiology

authors： Hashimoto H,Ozaki T,Nagashima S,Nakashima M

更新日期：1991-10-01 00:00:00

abstract：:Body surface isopotential maps around early ventricular activation were investigated in 30 normal subjects by the use of the authors' signal-averaged body surface mapping system. The number of beats averaged was 96-154 (mean, 127). Two distinct patterns were recognized in the appearance of a maximum at the onset of ve...

journal_title：Journal of electrocardiology

authors： Kubota I,Shibata T,Hanashima K,Yamaki M,Ikeda K,Tsuiki K,Yasui S

更新日期：1991-07-01 00:00:00