Abstract:
:A patient with acute extensive anterior and old inferior wall myocardial infarction developed left anterior hemiblock, resulting in loss of the electrocardiographic evidence of infarction. While the vectorcardiogram has generally been found useful in diagnosing coexistent hemiblock and inferior myocardial infarction, serial vectorcardiographic studies failed to identify myocardial infarction masked by the development of left anterior hemiblock in this case. This report highlights the occasional diagnostic problem posed by the association of this conduction abnormality with myocardial infarction and emphasizes the need for careful evaluation of patients with history of chest pain and left anterior hemiblock on the electrocardiogram.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Khair GZ,Tristani FE,Brooks HLdoi
10.1016/s0022-0736(80)80017-3subject
Has Abstractpub_date
1980-01-01 00:00:00pages
93-8issue
1eissn
0022-0736issn
1532-8430journal_volume
13pub_type
杂志文章abstract::Repetitive nonreentrant ventriculoatrial synchrony during dual-chamber pacing is characterized by long intervals alternating with short intervals. This arrangement activated automatic mode switching in a St Jude dual-chamber pacemaker in which the algorithm requires an atrial sensed event for automatic mode switching ...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2012.04.003
更新日期:2012-07-01 00:00:00
abstract::Postoperative atrial fibrillation is common after cardiac surgery. Prediction of which patients will develop postoperative atrial fibrillation would be clinically useful. Increased P-wave duration, suggesting atrial conduction delay and measured from preoperative electrocardiograms, predicts postoperative atrial fibri...
journal_title:Journal of electrocardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/j.jelectrocard.2004.01.003
更新日期:2004-04-01 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
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2004.08.056
更新日期:2004-01-01 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
pub_type: 杂志文章
doi:10.1016/0022-0736(91)90020-m
更新日期:1991-10-01 00:00:00
abstract::Severe bradyarrythmias remain as an important cause for hospital urgent admission and these patients can suffer potentially lethal complications (such as ventricular fibrillation [VF] and torsades de pointes [TdP]) between hospital admission and final therapy. Incidence and predictors of these tachyarrhythmias have no...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2003.10.003
更新日期:2004-01-01 00:00:00
abstract::Direct Wenckebach periods in the left bundle branch with periods of 4:3 and 5:4 conduction alternating with 2:1 left bundle branch block (LBBB) were observed in a patient who was admitted because of congestive heart failure. There was no previous documented LBBB and serial electrocardiographic (ECG) mainfestations aft...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(80)80034-3
更新日期:1980-01-01 00:00:00
abstract:BACKGROUND:Electrocution injury (EI) is a major problem in developing countries. The aim of this study is to investigate the effect of EI on electrocardiographic (ECG) parameters. METHODS:A total of 43 patients hospitalized with diagnosis of EI were prospectively enrolled. Admission ECGs were compared with follow-up E...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2015.06.009
更新日期:2015-09-01 00:00:00
abstract::Serial electrocardiograms (ECGs) of 49 patients receiving adriamycin were analyzed for the development of persistent changes. The ECG changes were compared with those of a control group of 20 patients receiving other chemotherapeutic drugs, which were comparable to the additional chemotherapy received by the adriamyci...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(78)80122-8
更新日期:1978-07-01 00:00:00
abstract::We recently reported that signal averaged electrocardiograms (SAECG) measurements possess a circadian rhythm and are closely related to heart rate or heart rate variability in healthy volunteers. This study determines the influence of autonomic tone on the filtered QRS (f-QRS) duration from SAECG by using pharmacologi...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(00)80096-5
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:We studied whether social media applications can serve as effective educational tools for teaching electrocardiogram (ECG) interpretation to medical residents. METHODS:39 emergency, family, and internal medicine residents participated in the 33-week "ECG of the Week" curriculum via Facebook and Twitter. ECG...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2017.04.010
更新日期:2017-01-01 00:00:00
abstract::While ST-segment elevation (STE) on ECG is widely recognized as representing myocardial infarction or injury such as coronary occlusion or pericarditis, STE may occasionally ensue from non-cardiac etiologies. Indeed, gastrointestinal disorders causing STE are not well documented in the literature. We present a case wh...
journal_title:Journal of electrocardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jelectrocard.2017.04.001
更新日期:2017-01-01 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
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2010.06.007
更新日期:2010-11-01 00:00:00
abstract::This study described the linear relationship of the myocardial infarct size, measured postmortem, to the integral of the sequential vector spatial magnitudes analyzed at 400 samples per second during the initial period of abnormal depolarization (IAD) in 25 patients with myocardial infarction (MI) and ten controls. Th...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(82)81002-9
更新日期:1982-10-01 00:00:00
abstract::In 37 consecutive patients with acute myocardial infarction undergoing Streptokinase infusion and acute coronary angiography, the electrocardiographic findings were compared with the findings during angiography. All 15 patients with an occluded right coronary artery demonstrated an electrocardiographic pattern of an a...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(84)80062-x
更新日期:1984-07-01 00:00:00
abstract::Traditional electrocardiographic (ECG) and vectorcardiographic (VCG) criteria for left ventricular enlargement (LVE) understandably emphasize the increased tendency of the maximal electrical forces of ventricular depolarization to be directed toward the left. This tendency is manifested on the ECG by increased amplitu...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:
更新日期:1987-10-01 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
pub_type: 杂志文章
doi:10.1016/0022-0736(92)90121-f
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Coronary artery disease (CAD) is a leading cause of death and disability. Conventional non-invasive diagnostic modalities for the detection of stable CAD at rest are subject to significant limitations: low sensitivity, and personal expertise. We aimed to develop a reliable and time-cost efficient screening t...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2019.12.018
更新日期:2020-01-01 00:00:00
abstract::A 53-year-old patient had a complex ventricular arrhythmia, which most likely was an intermittent pure (nonmodulated) parasystole, due to protection limited to the first part of the cycle coexisting with exit block. However, other interpretations of the observations were possible. Foremost among these was modulated pa...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(97)80046-5
更新日期:1997-10-01 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
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2017.04.016
更新日期:2017-01-01 00:00:00
abstract::A method has been developed for establishing a "University Without Walls" for the purpose of studying the relationship between electrocardiographic estimation and magnetic resonance imaging measurements of myocardial infarct size. The research team includes faculty and students from 4 medical centers, with expertise e...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1054/jelc.2001.28810
更新日期:2001-01-01 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
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract:OBJECTIVE:To determine the effect of exercise and heart rate on the early repolarization (ER) pattern; focusing on the new criteria for identification of ER. METHODS:The ECG measurements on the terminal QRS notch or slur found in early repolarization were quantitated before, during and after exercise; specifically: (i...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2019.03.005
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:It has been reported in the literature that the increase in body temperature shortens QT interval on electrocardiogram through heart rate modulation. However, the effects of fever on ventricular repolarization are not clearly known. This study elaborates on QT interval of isolated fever, corrected QT (cQT), ...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2020.11.016
更新日期:2020-12-03 00:00:00
abstract::A patient who had chronic coarse atrial fibrillation developed severe hyperkalemia accompanied by total loss of fibrillatory waves while an irregularly irregular ventricular rhythm persisted. Correction of hyperkalemia resulted in prompt return of coarse atrial fibrillation. This sequence of events renders strong supp...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(75)80040-9
更新日期:1975-01-01 00:00:00
abstract::We found significant variation within each computer and cardiologist method for measurement of the ECG waveform intervals. Comparison between methods revealed that the HP system had a smaller variability than the MAC or the cardiologist, and that the MAC had a smaller variability than the cardiologist. No variability ...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(07)80110-5
更新日期:1989-01-01 00:00:00
abstract::T-wave alternans (TWA) on the electrocardiogram have been frequently associated with long QT syndrome (LQTS) and abrupt rate change. The present study investigated the effect of the potassium channel opener nicorandil on the repolarization alternans at the endocardium and the epicardium in the left ventricle. Electroc...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1054/jelc.2000.8398
更新日期:2000-07-01 00:00:00
abstract::The classic electrocardiographic (ECG) manifestation of stage I of acute pericarditis is diffuse ST elevation and PR depression with ST depression in lead aVR. One of the most common conditions, that is often confused with acute pericarditis, is the benign diffuse ST elevation, termed "early repolarization with ST ele...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2019.01.085
更新日期:2019-01-01 00:00:00
abstract:INTRODUCTION:The right ventricular myocardial infarction (RVMI) has traditionally been mainly related to inferior wall ST elevation myocardial infarction (STEMI). This study assessed the RVMI electrocardiographic (ECG-RVMI) signs in relationship to ECG-based STEMI localization and to the infarct related artery in patie...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2016.08.001
更新日期:2016-01-01 00:00:00
abstract::Ventricular fibrillation (VF) had been traditionally considered as a highly disorganized process of random electrical activity emanating from multiple, short-lived, reentrant electrical waves. It is the incessant breakup of wave fronts and the creation of new daughter waves (wavebreaks) that perpetuate VF. Other studi...
journal_title:Journal of electrocardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jelectrocard.2007.06.021
更新日期:2007-11-01 00:00:00
abstract::Clinically based studies have indicated that patients who have suffered myocardial infarction (MI) exhibit lower heart rate variability (HRV). Such associations have not been reported at the population level. To investigate whether MI is related to lower HRV in the general population, the authors examined a stratified...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(96)80082-3
更新日期:1996-07-01 00:00:00