Prolonged QT and cardiac arrest after heart transplantation: inherited or acquired?

abstract：:There is an increased risk of sudden cardiac death (SCD) and sudden cardiac arrest (SCA), in African Americans, the basis of which is likely multifactorial. African Americans have higher rates of traditional cardiac risk factors including hypertension, left ventricular hypertrophy, diabetes, coronary heart disease, an...

journal_title：Journal of electrocardiology

authors： Fender EA,Henrikson CA,Tereshchenko L

更新日期：2014-11-01 00:00:00

abstract：PURPOSE:Recent research has established that a tall R-wave in V1 indicates lateral wall involvement in non-anterior wall myocardial infarction (MI). The objective of this study was to assess the value of the admission electrocardiogram (ECG) to predict R-waves and consequently lateral wall damage in the late phase of n...

journal_title：Journal of electrocardiology

authors： Norda S,van der Weg K,Vos R,Gorgels AP

更新日期：2015-07-01 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 Conventional upper limits of normal for many age-dependent electrocardiographic parameters have been replaced by continuous equations, thereby,...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：: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

authors： Wartak J

更新日期：1979-10-01 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：:Syncope is a risk factor for sudden cardiac death (SCD) in many conditions associated with structural heart disease as well as inherited heart disease. The ECG in patients with syncope should be examined carefully for signs of structural heart disease, such as myocardial infarction or cardiomyopathy; signs of conducti...

journal_title：Journal of electrocardiology

authors： Marine JE

更新日期：2013-11-01 00:00:00

abstract：:The Brugada syndrome (BS) accounts for approximately 20% of cases of sudden cardiac death in patients with structurally normal hearts. The electrophysiologic basis for ST-segment elevation in the precordial electrocardiogram (ECG) leads that characterize the Brugada phenotype and its strong linkage to ventricular tach...

journal_title：Journal of electrocardiology

authors： Baez-Escudero JL,Shah DP,Weisberg IL,Beshai JF,Burke MC

更新日期：2010-09-01 00:00:00

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

authors： Barold SS,Stroobandt RX,Van Heuverswyn F

更新日期：2012-07-01 00:00:00

abstract：:In order to differentiate posterior (posterolateral) myocardial infarction (PMI) from the anterior shift of the QRS loop in "normal variant" cases using a vectorcardiogram, the T loop as well as the QRS loop in the transverse plane (TP) were analyzed in 34 elderly Japanese males with angiographically-proven PMI and in...

journal_title：Journal of electrocardiology

authors： Takatsu F,Osugi J,Nagaya T,Uwatoko M,Watabe S,Ishikawa H

更新日期：1986-04-01 00:00:00

abstract：OBJECTIVE:The clinical benefit of percutaneous coronary intervention (PCI) is controversial in ST-segment elevation myocardial infarction (STEMI) patients presenting 12-72 hours after symptom onset. Several studies suggested this conflicting result was associated with myocardial area at risk (MaR) of enrolled patients....

journal_title：Journal of electrocardiology

authors： Zhang YJ,Zheng W,Sun J,Li GL,Chi BR

更新日期：2015-03-01 00:00:00

abstract：:Extra AV nodal Wenckebach periodicity was diagnosed in seven patients. The most frequent form of this conduction abnormality was an exit block. The underlying block was localized in the sinoatrial junction and in the atria in two patients; the AV junction and the ventricle were the site of the Wenckebach periodicity i...

journal_title：Journal of electrocardiology

authors： Schweitzer P,Choudhry M,Kunkes SH,Ress R,Mark H

更新日期：1981-07-01 00:00:00

abstract：BACKGROUND:Reducing time to reperfusion treatment for patients with ST-segment elevation myocardial infarction (STEMI) improves patient outcomes. Few medical systems consistently meet current benchmarks regarding timely access to treatment. Studies have widely demonstrated that prehospital 12-lead electrocardiography c...

journal_title：Journal of electrocardiology

authors： Frendl DM,Palmeri ST,Clapp JR Jr,Hampton D,Sejersten M,Young D,Drew B,Farrell R,Innes J,Russell J,Rowlandson GI,Purim-Shem-Tov Y,Underhill BK,Zhou S,Wagner GS,Journal of Electrocardiology Prehospital 12-lead ECG Working Gro

更新日期：2009-09-01 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

authors： Niggemann B,Gann D

更新日期：1984-07-01 00:00:00

abstract：:In patients with suspected ST elevation myocardial infarction, it is of paramount importance to identify artifacts on the resting electrocardiogram that may be erroneously interpreted as ST segment deviations in order to prevent administration of potentially harmful pharmacotherapy and invasive coronary angiography. I...

journal_title：Journal of electrocardiology

authors： Sud M,Chauhan VS,Madan M

更新日期：2018-01-01 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：: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：:This article concerns a currently reported hypothesis explaining the alternations of conduction time during intra atrioventricular (AV) nodal reentrant tachycardia (AVNRT). This hypothesis supposes simple mutual influence of sequences of intranodal conduction during reentry tachycardia that use the same circuit in dif...

journal_title：Journal of electrocardiology

authors： Malik M,Camm AJ

更新日期：1989-01-01 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：:Atrial arrhythmias are diagnosed on the basis of the analysis of P wave morphology, timing and rate, the surface electrocardiogram, and intracardiac recordings. Recent intracardiac studies have demonstrated dissimilar atrial rhythms with direct intra-atrial recordings, the former otherwise not evident on the surface E...

journal_title：Journal of electrocardiology

authors： Martinez EE,Pontes S,dePaola AA,Gomes JA

更新日期：1991-04-01 00:00:00

abstract：BACKGROUND AND PURPOSE:ECG screening of young athletes for risk of sudden cardiac death has grown in popularity throughout the world. The purpose of this study is to assess the technical error rate of ECGs acquired by appropriately trained community volunteers compared to that reported in the literature utilizing train...

journal_title：Journal of electrocardiology

authors： Marek JC,Marek SA,Marek KA,Zimmerman F

更新日期：2015-05-01 00:00:00

abstract：BACKGROUND:Displacement of ECG leads can result in unwarranted findings. We assessed the frequency of Brugada-type patterns in athletes when precordial leads were purposely placed upward. METHODS:Four hundred ninety-one collegiate athletes underwent two ECGs: one with standard leads, one with V1 and V2 along the 2nd i...

journal_title：Journal of electrocardiology

authors： Chung EH,McNeely DE 3rd,Gehi AK,Brickner T,Evans S,Pryski E,Waicus K,Stafford H,Mounsey JP,Schwartz JD,Huang S,Pursell I,Ciocca M

更新日期：2014-01-01 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：:Frank vectorcardiograms (VCGs) were collected on magnetic tape for 666 normal newborn infants at 1, 6, 12, 24, 36, 48, 60, and 72 hours after birth and analyzed by computers. The final total included 1,337 VCGs for white babies and 413 for blacks. No previous report has been made for the normal neonate with such a lar...

journal_title：Journal of electrocardiology

authors： Guller B,Lau FY,Dunn RA,Pipberger HA,Pipberger HV

更新日期：1977-01-01 00:00:00

abstract：:No prior studies have evaluated the relationship between the site of right ventricular stimulation, the site of prior infarction, and the inducibility of ventricular tachycardia (VT). This study was performed to determine if the location of pathologic Q waves influences the inducibility of VT at various right ventricu...

journal_title：Journal of electrocardiology

authors： Harvey M,Goyal R,Knight BP,Man KC,Strickberger SA,Morady F

更新日期：1998-10-01 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：:Frank-lead electrocardiograms (ECGs) were recorded from 59 adult males with suspected coronary artery disease. Three records were recorded consecutively on frequency modulated tape for each patient in (1) supine position, (2) sitting position with arms relaxed, and (3) sitting position on bicycle with arms on bicycle ...

journal_title：Journal of electrocardiology

authors： Shapiro W,Berson AS,Pipberger HV

更新日期：1976-01-01 00:00:00

abstract：BACKGROUND:Cardiovascular complications are considered a significant problem in patients with chronic kidney disease (CKD). Body surface potential mapping (BSPM) is a noninvasive method that is useful in detecting early changes involving the heart. The aim of the study was to evaluate possible abnormalities within the ...

journal_title：Journal of electrocardiology

authors： Polak-Jonkisz D,Laszki-Szczachor K,Purzyc L,Zwolińska D,Musiał K,Pilecki W,Rusiecki L,Janocha A,Kałka D,Sobieszczańska M

更新日期：2009-03-01 00:00:00

abstract：:Left ventricular systolic function, determined mainly by final infarct size, has a major influence on prognosis after acute myocardial infarction (MI). It was found that infarct size and left ventricular ejection fraction can be predicted using the Selvester QRS-score in patients not receiving reperfusion therapy. We ...

journal_title：Journal of electrocardiology

authors： Birnbaum Y,Strasberg B

更新日期：2000-01-01 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 patients presenting with signs and symptoms of an acute coronary syndrome (ACS) the combination of multilead ST depression and ST elevation in lead aVR, the electrocardiographic "aVR sign," has been associated with severe left main coronary artery stenosis or diffuse coronary artery disease and a high risk of death...

journal_title：Journal of electrocardiology

authors： Gibbs MA,Leedekerken JB,Littmann L

更新日期：2019-01-01 00:00:00