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Journal of Electrocardiology

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https://www.readbyqxmd.com/read/27919411/sudden-death-risk-stratification-beyond-the-ejection-fraction-based-approach
#1
LETTER
Konstantinos A Gatzoulis, Christos-Konstantinos Antoniou, Dimitrios Tousoulis
No abstract text is available yet for this article.
November 27, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27894598/the-research-practicum-and-international-research-interdisciplinary-school-iris-initiatives-in-memory-of-professor-galen-s-wagner-m-d-phd
#2
LETTER
Ljuba Bacharova, Samuel J Bell, Jonathan Lipton, Eric Eisenstein, Gulmira Kudaiberdieva, Marilyn Wagner, Ioana Mozos, Aleksandra Misak, Nina Hakacova
No abstract text is available yet for this article.
November 10, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27890283/the-4th-report-of-the-working-group-on-ecg-diagnosis-of-left-ventricular-hypertrophy
#3
LETTER
Ljuba Bacharova, Harvey E Estes, Douglas D Schocken, Martin Ugander, Elsayed Z Soliman, Joseph A Hill, Lia E Bang, Todd T Schlegel
The 4th Report provides a brief review of publications focused on the electrocardiographic diagnosis of left ventricular hypertrophy published during the period of 2010 to 2016 by the members of the Working Group on ECG diagnosis of Left Ventricular Hypertrophy. The Working Group recommended that ECG research and clinical attention be redirected from the estimation of LVM to the identification of electrical remodeling, to better understanding the sequence of events connecting electrical remodeling to outcomes...
November 10, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27889057/algorithm-for-the-automatic-computation-of-the-modified-anderson-wilkins-acuteness-score-of-ischemia-from-the-pre-hospital-ecg-in-st-segment-elevation-myocardial-infarction
#4
Yama Fakhri, Maria Sejersten, Mikkel Malby Schoos, Jacob Melgaard, Claus Graff, Galen S Wagner, Peter Clemmensen, Jens Kastrup
BACKGROUND: The acuteness score (based on the modified Anderson-Wilkins score) estimates the acuteness of ischemia based on ST-segment, Q-wave and T-wave measurements obtained from the electrocardiogram (ECG) in patients with ST Elevation Myocardial Infarction (STEMI). The score (range 1 (least acute) to 4 (most acute)) identifies patients with substantial myocardial salvage potential regardless of patient reported symptom duration. However, due to the complexity of the score, it is not used in clinical practice...
November 10, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27889056/in-memory-of-professor-galen-s-wagner-m-d-ph-d-1939-2016-our-mentor-colleague-and-friend
#5
LETTER
Marilyn Wagner, Laura Wagner, Chris Wagner, Samuel J Bell, Brit W Nicholson, David G Strauss, Stafford Warren, Olle Pahlm, Ljuba Bacharova, Jonathan Lipton, Eric Eisenstein, Gulmira Kudaiberdieva, Nina Hakacova
No abstract text is available yet for this article.
November 10, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27887720/prehospital-electrocardiographic-acuteness-score-of-ischemia-is-inversely-associated-with-neurohormonal-activation-in-stemi-patients-with-severe-ischemia
#6
Yama Fakhri, Mikkel Malby Schoos, Maria Sejersten, Mads Ersbøll, Nana Valeur, Lars Køber, Christian Hassager, Galen S Wagner, Jens Kastrup, Peter Clemmensen
BACKGROUND: Elevated levels of N-terminal pro brain natriuretic peptide (NT-proBNP) are associated with adverse cardiovascular outcome after ST elevation myocardial infarction (STEMI). We hypothesized that decreasing acuteness-score (based on the electrocardiographic score by Anderson-Wilkins acuteness score of myocardial ischemia) is associated with increasing NT-proBNP levels and the impact of decreasing acuteness-score on NT-proBNP levels is substantial in STEMI patients with severe ischemia...
November 10, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27916321/exercise-induced-quantitative-microvolt-t-wave-alternans-in-hypertrophic-cardiomyopathy
#7
Murillo de Oliveira Antunes, Nelson Samesima, Horacio Gomes Pereira Filho, Afonso Yoshikiro Matsumoto, Richard L Verrier, Carlos Alberto Pastore, Edmundo Arteaga-Fernández, Charles Mady
BACKGROUND/PURPOSE: Patients with hypertrophic cardiomyopathy (HCM) have elevated risk for sudden cardiac death (SCD). Our study aimed to quantitatively characterize microvolt T-wave alternans (TWA), a potential arrhythmia risk stratification tool, in this HCM patient population. METHODS: TWA was analyzed with the quantitative modified moving average (MMA) in 132 HCM patients undergoing treadmill exercise testing, grouped according to Maron score risk factors as high-risk (H-Risk, n=67,), or low-risk (L-Risk, n=65, without these risk factors)...
October 28, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27914634/position-of-st-deviation-measurements-relative-to-the-j-point-impact-for-ischemia-detection
#8
Sumche Man, C Cato Ter Haar, Marjolein C de Jongh, Arie C Maan, Martin J Schalij, Cees A Swenne
BACKGROUND: There is no consensus about the time instant relative to the J point where ST deviation has to be measured for detection of acute ischemia in the ECG. METHODS: We analyzed 53 ECGs, recorded preceding emergency catheterization of acute coronary syndrome patients with a completely occluded culprit artery (cases), and 88 control ECGs recorded in the cardiology outpatient clinic. ECG-amplitude measurements were made every 10 ms, between 20 ms before till 80 ms after the J point...
October 28, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27866647/the-maastricht-duke-bridge-an-era-of-mentoring-in-clinical-research-a-model-for-mentoring-in-clinical-research-a-tribute-to-dr-galen-wagner
#9
LETTER
Loek Meijs, Robbert Zusterzeel, Hein Jj Wellens, Anton Pm Gorgels
OBJECTIVE: With the passing of Dr. Galen Wagner, an exceptional collaboration between Maastricht University Medical Center, The Netherlands, and Duke Clinical Research Institute, USA, has come to an end. This article focuses on the background of what Galen coined the Maastricht-Duke bridge (MD-bridge), its merits, limitations and development throughout the years, and his special role. METHODS: Between 2004 and 2015, 23 Maastricht University medical students and post-graduate students were enrolled in the 4-month research elective, mentored by Galen and the Maastricht co-mentor...
October 27, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27817836/transient-right-bundle-branch-block-in-a-patient-with-acute-pulmonary-embolism
#10
Jonathan Gonzva, François-Valéry Viard, Daniel Jost, Hugues Lefort, Jean-Pierre Tourtier
We report the case of an 86-year-old man found at home with acute chest pain and dyspnea. He presented some episodes of left chest pain combined with dyspnea. The physical examination revealed crackling sounds on the bases of the lungs without other anomalies. Electrocardiograms revealed a transient and complete right bundle branch block with inverted T waves in leads V1, V2, and V3. He was diagnosed with a proximal bilateral acute pulmonary embolism without acute cor pulmonale. We describe a case of a transient bundle branch block, without tachycardia or acute cor pulmonale, revealing a pulmonary embolism...
October 21, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27836168/the-olson-method-for-detection-of-acute-myocardial-ischemia-in-patients-with-coronary-occlusion
#11
Thomas Lindow, Charles W Olson, Cees A Swenne, Sumche Man, Olle Pahlm
: An automated ECG-based method may provide diagnostic support in the management of patients with acute coronary syndrome. The Olson method has previously proved to accurately identify the culprit artery in patients with acute coronary occlusion. METHODS: The Olson method was applied to 360 patients without acute myocardial ischemia and 52 patients with acute coronary occlusion. RESULTS: This study establishes the normal variation of the Olson wall scores in patients without acute myocardial ischemia, which provides the basis for implementation of the Olson method for triage of patients with acute coronary syndrome...
October 19, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27890282/selective-versus-non-selective-his-bundle-pacing-for-cardiac-resynchronization-therapy
#12
REVIEW
Gaurav A Upadhyay, Roderick Tung
Cardiac resynchronization therapy (CRT) has an established role in the device-based therapy for patients with systolic dysfunction and intraventricular conduction delay, particularly left bundle branch block (LBBB). Recently, His bundle pacing (HBP) has emerged as a viable alternative for resynchronization which can successfully narrow surface QRS and improve mechanical dyssynchrony. The role of selective (i.e., an isoelectric His-paced to QRS interval similar to native HV interval) versus non-selective capture (i...
October 18, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27839834/intra-myocardial-growth-hormone-administration-ameliorates-arrhythmogenesis-during-ischemia-reperfusion-in-rats
#13
Marianthi Kontonika, Eleonora Barka, Maria Roumpi, Agapi D Vilaeti, Giannis G Baltogiannis, Antonios P Vlahos, Simeon Agathopoulos, Theofilos M Kolettis
Growth hormone, currently under evaluation for the prevention of left ventricular remodeling post-myocardial infarction, displays antiarrhythmic properties in the acute setting. However, it is uncertain whether these actions are retained after ischemia/reperfusion. Using implanted telemetry transmitters, we examined the effects of prolonged, intra-myocardial growth hormone administration in conscious rats. During a 24-h observation period, ventricular tachyarrhythmias and sympathetic activation were attenuated in treated rats, whereas infarct-size was unchanged...
October 18, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27836167/a-1-year-old-boy-with-long-pauses-caused-by-paroxysmal-atrioventricular-block-and-sinus-arrest-vagal-reflex-and-effect-of-pacing
#14
Sayaka Sakazaki, Satoshi Masutani, Yoichi Iwamoto, Yoshitaka Asano, Ai Miyamoto, Hirotaka Ishido, Masanori Tamura, Hideaki Senzaki
Paroxysmal atrioventricular block (PAVB) is rare in children. A 1-year-old boy presented with PAVB and sinus arrest that resulted in refractory life-threatening symptomatic long pauses. Continuous heart rate variability analysis with high time resolution (wavelet analysis) revealed an abrupt increase in parasympathetic activity just before a long pause, which indicated a vagal reflex. Although a pacemaker is not always effective because of a concomitant vasodepressive response in such cases, the complete stabilization after pacemaker implantation in this case supports the necessity and usefulness of pacemaker implantation in patients with reflex-induced highly symptomatic bradycardia...
October 18, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27839835/ecg-derived-spatial-qrs-t-angle-is-strongly-associated-with-hypertrophic-cardiomyopathy
#15
Daniel Cortez, Todd T Schlegel, Michael J Ackerman, J Martijn Bos
INTRODUCTION: ECG-derived vectorcardiography (VCG) has diagnostic and prognostic value in various diseases. Hypertrophic cardiomyopathy (HCM), a genetic disease with unexplained left ventricular hypertrophy, is one of the most common causes of sudden cardiac death (SCD) in young persons. Genotype positive status is associated with increased risk of systolic dysfunction, heart failure, and (SCD). Herein, we aimed to determine the diagnostic utility of derived VCG parameters in a large cohort of genotyped HCM patients...
October 14, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27720211/history-of-his-bundle-pacing
#16
Gopi Dandamudi, Pugazhendhi Vijayaraman
Chronic right ventricular (RV) pacing has been shown over the years to exert detrimental physiological changes including increased risk for heart failure and atrial fibrillation. His bundle pacing offers the promise of physiological activation of the ventricular tissue, with the potential for reducing the detrimental effects of RV pacing. We describe His bundle pacing in a historical context and briefly highlight several clinical trials that have helped shape the landscape of permanent His bundle pacing.
September 24, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27717572/massive-j-waves-in-the-context-of-intracranial-hemorrhage
#17
Bryce Alexander, Samantha Britton, Raimundo Barbosa-Barros, Andrés R Pérez-Riera, Izabel Carminda de Mourão Matos, Przemyslaw Guzik, Adrian Baranchuk
Transient ST-segment elevation may be caused by conditions other than myocardial ischemia, among them intracranial hemorrhage. Recognition of the underlying etiology of these ST-segment changes is key because of the vastly different therapies used to treat them. We describe the case of a patient with massive transient J-waves and ST-segment elevation in the context of an intracranial hemorrhage.
September 24, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27707533/spike-on-t-wave-what-went-wrong
#18
Pasquale Crea, Giuseppe Picciolo, Teresa Crea, Francesco Luzza
An 80-year-old male, who previously received a dual chamber pacemaker, was referred to our ambulatory for dizziness and fatigue. The ECG obtained showed sinus rhythm, highly variable atrioventricular (AV) interval and alternation between spontaneous and paced ventricular complexes. A spike on the ascending part of the T wave was observed, suggesting ventricular undersensing. However, telemetry-supported pacemaker control showed inconstant atrial undersensing.
September 24, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27658690/digitizing-paper-electrocardiograms-status-and-challenges
#19
George S Waits, Elsayed Z Soliman
The paper electrocardiogram (ECG) has been widely used for cardiac assessment for well over a century. ECGs can be obtained quickly and cheaply. For this reason, an ever-growing amount of paper ECG records continue to accumulate, some of which are stored into a paper-only format. Converting paper ECGs into digital form has been proposed as the most efficient means to store and analyze an otherwise cumbersome paper archive. In this article, a literature review was conducted for conversion algorithms, criticisms of said algorithms, applications, and standardization efforts...
September 12, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27662777/computer-assisted-image-processing-12-lead-ecg-model-to-diagnose-hyperkalemia
#20
Venu Velagapudi, John C O'Horo, Anu Vellanki, Stephen P Baker, Rahul Pidikiti, Jeffrey S Stoff, Dennis A Tighe
BACKGROUND: We sought to develop an improved 12 lead ECG model to diagnose hyperkalemia by use of traditional and novel parameters. METHODS: We retrospectively analyzed ECGs in consecutive hyperkalemic patients (serum potassium (K)>5.3mEq/L) by blinded investigators with normokalemic ECGs as internal controls. Potassium levels were modeled using general linear mixed models followed by refit with standardized variables. Optimum sensitivity and specificity were determined using cut point analysis of ROC-AUC...
September 9, 2016: Journal of Electrocardiology
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