Abstract:
:The Brugada syndrome is characterized by ST-segment elevation in the right precordial leads (V1 through V3) and an episode of ventricular fibrillation in the absence of structural heart disease. SCN5A, the gene encoding the alpha subunit of the sodium channel, is the only gene thus far linked to the Brugada syndrome but is identified in only 18% to 30% of patients with clinically diagnosed Brugada syndrome. On the other hand, experimental studies have suggested that an intrinsically prominent transient outward current-mediated action potential (AP) notch and a subsequent loss of the AP dome in the epicardium but not in the endocardium of the right ventricular outflow tract give rise to a transmural voltage gradient, resulting in ST-segment elevation and phase 2 reentry-induced ventricular fibrillation. Therefore, any intervention that increases outward currents (eg, transient outward current, adenosine triphosphate-sensitive potassium current, delayed modifier potassium current) or decreases inward currents (eg, L-type calcium current, fast sodium current) at the end of phase 1 of the AP can accentuate or unmask ST-segment elevation, similar to that found in the Brugada syndrome, thus producing acquired forms of the Brugada syndrome. In this review, several drugs in addition to sodium-channel blockers and conditions that induce transient ST-segment elevation such as that in the Brugada syndrome, developing acquired forms of the Brugada syndrome, are discussed.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Shimizu Wdoi
10.1016/j.jelectrocard.2005.06.005keywords:
subject
Has Abstractpub_date
2005-10-01 00:00:00pages
22-5issue
4 Suppleissn
0022-0736issn
1532-8430pii
S0022-0736(05)00113-5journal_volume
38pub_type
杂志文章,评审abstract::This study assesses the occurrence of and identifies clinical characteristics associated with the development of aberrant conduction during infusion of the I(kr)-blocker almokalant. Class III drugs may induce aberrant conduction by prolongation of cardiac repolarization, especially during atrial fibrillation (AF). Nin...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1054/jelc.2002.33766
更新日期:2002-07-01 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
pub_type: 杂志文章
doi:10.1016/s0022-0736(76)80047-7
更新日期:1976-01-01 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
pub_type: 杂志文章
doi:10.1016/s0022-0736(84)80070-9
更新日期:1984-10-01 00:00:00
abstract:BACKGROUND:ECG cable interchange can generate erroneous diagnoses. For algorithms detecting ECG cable interchange, high specificity is required to maintain a low total false positive rate because the prevalence of interchange is low. In this study, we propose and evaluate an improved algorithm for automatic detection a...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2014.08.006
更新日期:2014-11-01 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
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jelectrocard.2015.04.013
更新日期:2015-07-01 00:00:00
abstract::The left ventricle (LV) plays a central role in the maintenance of health of children and adults due to its role as the major pump of the heart. In cases of LV dysfunction, a significant percentage of affected individuals develop signs and symptoms of congestive heart failure, leading to the need for therapeutic inter...
journal_title:Journal of electrocardiology
pub_type: 杂志文章,评审
doi:10.1054/jelc.2001.28859
更新日期:2001-01-01 00:00:00
abstract:AIMS:Patients with atrioventricular (AV) block can develop left ventricular (LV) dysfunction with long-term right ventricular pacing (RVP). We investigated the role of RVP-induced LV dyssynchrony in this adverse remodeling. METHODS AND RESULTS:Nineteen patients with normal LV function undergoing pacemaker implantation...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2012.04.001
更新日期:2012-07-01 00:00:00
abstract::Implantable cardioverter defibrillators (ICDs) detect and defibrillate ventricular fibrillation (VF) and ventricular tachycardia (VT). Other therapies which use less energy are also available to terminate VT. Previous studies have shown that ICD rate schemes often misdiagnose VT as VF. In this study, an improved VF cl...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(98)80060-5
更新日期:1998-01-01 00:00:00
abstract::Ventricular tachycardia arising from a healed myocardial infarction scar continues to be a significant cause of morbidity and mortality. Drug therapy has been inadequate to meet this challenge, and implantable devices are limited by expense and technical problems. We have proposed the use of gene therapy for cardiac a...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2007.05.036
更新日期:2007-11-01 00:00:00
abstract:OBJECTIVE:Assess effect of right ventricular pacing (RVP) on left ventricular (LV) activation in heart failure patients with left bundle branch block (LBBB). BACKGROUND:LV activation during RVP is regarded as similar to LBBB; hence novel CRT algorithms may avoid RVP by adopting "fusion" pacing with intrinsic RBB-media...
journal_title:Journal of electrocardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.jelectrocard.2014.09.002
更新日期:2015-01-01 00:00:00
abstract::A graph consisting of small squares of equal size preprinted on a transparent plastic chart can be used for a quick and accurate calculation of the VCG loop area in each quadrant of the three conventional planes. ...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(79)80013-8
更新日期:1979-10-01 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: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
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2020.09.001
更新日期:2020-01-01 00:00:00
abstract::15-Year-old man's cardiac event monitor showed an episode of wide complex tachycardia which transitioned into narrow complex tachycardia. The tachycardia cycle length was shorter during wide complex tachycardia compared with narrow complex tachycardia. He underwent electrophysiology study in which an orthodromic atrio...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2020.02.002
更新日期:2020-01-01 00:00:00
abstract::The pathophysiological mechanisms of altered transmembrane potentials in diseased human atria were investigated in 20 patients who were divided into group A (normal) and group B (diseased). The electrophysiological data of right atrial tissues measured with glass microelectrodes included maximum diastolic potentials (...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(86)80006-1
更新日期:1986-01-01 00:00:00
abstract:OBJECTIVE:The purpose of this study is to investigate the effect of cardiac resynchronization therapy (CRT) on P wave maximum duration (PWM) and P wave dispersion (PWD) in patients with advanced heart failure. METHODS:Forty-six patients (33 men; mean age, 60 +/- 11 years) with CRT were enrolled in the present study. P...
journal_title:Journal of electrocardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.jelectrocard.2009.02.005
更新日期:2009-07-01 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
pub_type: 杂志文章
doi:10.1016/0022-0736(88)90102-1
更新日期:1988-08-01 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
pub_type: 杂志文章
doi:10.1016/s0022-0736(96)80116-6
更新日期:1996-01-01 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::The electrocardiographic transient display of left ventricular hypertrophy (LVH), during rapid heart rates, in the setting of sinus/supraventricular tachycardias and atrial fibrillation, is illustrated via 3 case reports. This common occurrence is expressed by an increase in the S-waves in leads V2-V5, during tachycar...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2021.01.001
更新日期:2021-01-09 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
pub_type: 杂志文章
doi:10.1016/s0022-0736(79)80046-1
更新日期:1979-01-01 00:00:00
abstract::Takotsubo cardiomyopathy (TTC) is characterized by acute and reversible ventricular dysfunction in the absence of significant coronary artery disease, typically triggered by acute emotional or physical stress. In the acute phase of TTC, the electrocardiogram (ECG) shows ST-segment elevation, which rapidly evolves into...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2013.02.005
更新日期:2013-07-01 00:00:00
abstract::Previous studies indicate that the predictive value of atrial fibrillatory rate in patients undergoing cardioversion of atrial fibrillation (AF) of long duration is limited. The present study investigates signal entropy in this setting. Standard 12-lead electrocardiograms (ECGs) were recorded from 66 consecutive patie...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2010.10.033
更新日期:2011-03-01 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
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2019.08.044
更新日期:2019-01-01 00:00:00
abstract::Until recently, ECG accuracy in localizing acute myocardial infarction (AMI) could be assessed only by comparing the ECGs with autopsy findings. This approach, however, preselected patients, including only those who died. It is possible that this postmortem group of patients would be different from the whole populatio...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(82)80014-9
更新日期:1982-04-01 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
pub_type: 杂志文章
doi:10.1016/s0022-0736(96)80073-2
更新日期:1996-01-01 00:00:00
abstract::The authors comment on the present status of computerized electro-cardiogram (ECG) works in Japan and demonstrate the preliminary tentative results of CSE (common standards for quantitative electrocardiography) data analysis using the Nagoya program. The more detailed results of the performance of several programs in ...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/0022-0736(88)90087-8
更新日期:1988-01-01 00:00:00
abstract::Reliable cardiovascular (CV) risk assessment by a noninvasive tool would be of great value for CV event prevention. The present study consists of 187 coronary artery disease patients with 8 years of follow-up. Eight vectorcardiographic parameters characterizing different aspects of ventricular repolarization were anal...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2010.05.004
更新日期:2010-07-01 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
pub_type: 杂志文章
doi:10.1016/s0022-0736(77)80052-6
更新日期:1977-04-01 00:00:00
abstract::The de Winter electrocardiogram (ECG) pattern may signify proximal left anterior descending artery (LAD) occlusion and was suggested to be managed as ST-segment elevation myocardial infarction (STEMI) equivalent for urgent angiography and reperfusion therapy. However, cardiac catheter laboratory is not readily or time...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2019.06.010
更新日期:2019-01-01 00:00:00