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Robert L Lux
Ventricular repolarization and its manifestation in the T wave of the electrocardiogram have long been a focus of clinical and experimental electrocardiology. In this short article, we shall review the basics of cellular and organ repolarization electrophysiology, the classical and emerging methods of measuring global repolarization, and methodology that relates directly measured cardiac indices of repolarization to the body surface electrocardiogram.
July 12, 2017: Journal of Electrocardiology
Cláudia Y Santos, Jason T Machan, Wen-Chih Wu, Peter J Snyder
To explore early autonomic cardiac changes in pre-clinical Alzheimer's disease (AD), we have evaluated electrocardiologic measures of vagal tone for 63 adults (ages 55-75) at rest, during cognitive testing, and then again at rest. All subjects had multiple risk factors for AD, and all completed amyloid PET scans (18F-Florbetapir) to determine amyloid positivity (Aβ+). No change in electrocardiographic measures were observed for Aβ+ participants under each testing condition, whereas Aβ-subjects showed an expected increase in vagal tone during the cognitive stress condition...
2017: Journal of Alzheimer's Disease: JAD
E Clarke Whalen, G Xu, I Cygankiewicz, L Bacharova, W Zareba, J S Steinberg, L G Tereshchenko, A Baranchuk
Despite the increasing number of women entering the medical profession, senior positions and academic productivity in many fields of medicine remain to be men dominated. We explored gender equity in electrocardiology as perceived by recent academic productivity and also active participation (presidencies and board constituents) in both the International Society of Electrocardiology (ISE) and the International Society for Holter and Noninvasive Electrocardiology (ISHNE). Academic productivity was measured by authorship (first and senior) in the Journal of Electrocardiology (JECG) and the Annals of Noninvasive Electrocardiology (ANE) in 2015...
May 4, 2017: Journal of Electrocardiology
Erica Clarke Whalen, Grace Xu, Iwona Cygankiewicz, Ljuba Bacharova, Wojciech Zareba, Jonathan S Steinberg, Larisa G Tereshchenko, Adrian Baranchuk
No abstract text is available yet for this article.
May 12, 2017: Annals of Noninvasive Electrocardiology
A A Hemmati, S Olapour, H Najafzadeh Varzi, M J Khodayar, M Dianat, B Mohammadian, H Yaghooti
Arsenic trioxide (As2O3) is utilized for treating patients suffering from hematological malignancies particularly acute promyelocytic leukemia. Unfortunately, the extensive application of this chemotherapeutic agent has been limited due to its adverse effects such as cardiotoxicity. Ellagic acid, as a phenolic compound, has shown to exert antioxidant, anti-inflammatory, antifibrotic, and antiatherogenic properties. It is also capable of protecting against drug toxicity. In this study, we evaluated whether ellagic acid can protect against As2O3-induced heart injury in rats...
January 1, 2017: Human & Experimental Toxicology
Hoorak Poorzand, Bita Kiafar, Fardideh Asadzadeh Heravi, Mohammad Vejdanparast, Azadeh Saki, Mohammad Tayebi, Negar Morovatdar, Neda Karimabadi
BACKGROUND: Cardiogoniometry (CGM), a spatiotemporal electrocardiologic method may be useful as a cardiovascular diagnostic tool. Increased incidence of coronary artery or myocardial involvement and defects in automatic setting of heart activity have been reported in psoriasis which could be related to the presence of systemic inflammation. Cardiogoniometry and the related parameters have been used in this study as a diagnostic technique in psoriasis patients. METHODS: Thirty patients with psoriasis and 30 healthy, age and sex-matched individuals with no history of cardiovascular diseases or traditional coronary risk factors were enrolled...
January 2017: Indian Heart Journal
Geertjan Huiskamp, Thom Oostendorp, Jan de Munck
Multimodal source imaging is an emerging field in biomedical engineering. Its central goal is to combine different imaging modalities in a single model or data representation, such that the combination provides an enhanced insight into the underlying physiological organ, compared to each modality separately. It requires advanced signal acquisition and processing techniques and has applications in cognitive neuroscience, clinical neuroscience and electrocardiology. Therefore, it belongs to the heart of biomedical engineering...
October 24, 2016: IEEE Transactions on Bio-medical Engineering
Brett D Atwater, Ljuba Bacharova, Olle Pahlm, Cees A Swenne
No abstract text is available yet for this article.
January 2017: Journal of Electrocardiology
Cees A Swenne, Olle Pahlm, Brett D Atwater, Ljuba Bacharova
This paper describes a substantial part of the international mentoring network of students and young investigators in electrocardiology that developed around Dr. Galen Wagner (1939-2016), including many experiences of his mentees and co-mentors. The paper is meant to stimulate thinking about international mentoring as a means to achieve important learning experiences and personal development of young investigators, to intensify international scientific cooperation, and to stimulate scientific production.
January 2017: Journal of Electrocardiology
Geertjan Huiskamp, T F Oostendorp, J C De Munck
Multimodal source imaging is an emerging field in biomedical engineering. Its central goal is to combine different imaging modalities in a single model or data representation, such that the combination provides an enhanced insight into the underlying physiological organ, compared to each modality separately. It requires advanced signal acquisition and processing techniques and has applications in cognitive neuroscience, clinical neuroscience and electrocardiology. Therefore, it belongs to the heart of biomedical engineering...
December 2016: IEEE Transactions on Bio-medical Engineering
Jessica K Zègre-Hemsey, David Pickham, Michele M Pelter
INTRODUCTION: The American Heart Association recommends individuals with symptoms suggestive of acute coronary syndrome (ACS) activate the Emergency Medical Services' (EMS) 911 system for ambulance transport to the emergency department (ED), which enables treatment to begin prior to hospital arrival. Despite this recommendation, the majority of patients with symptoms suspicious of ACS continue to self-transport to the ED. The IMMEDIATE AIM study was a prospective study that enrolled individuals who presented to the ED with ischemic symptoms...
November 2016: Journal of Electrocardiology
A Kirbas, K Daglar, O Kirbas, C Koseoglu, O Kara, E Biberoglu, O Kurmus, C Yayla, N Danisman
OBJECTIVE: Familial mediterranean fever (FMF) is the most common auto-inflammatory disease that is characterized by recurrent, self-limited attacks of fever and serous membrane inflammation. Patients with inflammatory rheumatic diseases are considered to have a raised cardiovascular diseases risk. The aim of this study was to investigate; by means of P wave dispersion (Pd) and QT dispersion (QTd) parameters detected by simple standard electrocardiogram (ECG), atrial and ventricular repolarization changes in pregnant women with and without FMF...
August 2016: European Review for Medical and Pharmacological Sciences
Rafał Baranowski, Dariusz Wojciechowski, Dariusz Kozłowski, Piotr Kukla, Małgorzata Kurpesa, Jacek Lelakowski, Monika Maciejewska, Beata Średniawa, Jerzy Krzysztof Wranicz
No abstract text is available yet for this article.
2016: Kardiologia Polska
Hugo Talbot, Federico Spadoni, Christian Duriez, Maxime Sermesant, Mark O'Neill, Pierre Jaïs, Stéphane Cotin, Hervé Delingette
Recent progress in cardiac catheterization and devices has allowed the development of new therapies for severe cardiac diseases like arrhythmias and heart failure. The skills required for such interventions are very challenging to learn, and are typically acquired over several years. Virtual reality simulators may reduce this burden by allowing trainees to practice such procedures without risk to patients. In this paper, we propose the first training system dedicated to cardiac electrophysiology, including pacing and ablation procedures...
January 2017: Medical Image Analysis
Mark Potse, Theo A R Lankveld, Stef Zeemering, Pieter C Dagnelie, Coen D A Stehouwer, Ronald M Henry, André C Linnenbank, Nico H L Kuijpers, Ulrich Schotten
BACKGROUND: P waves reported in electrocardiology literature uniformly appear smooth. Computer simulation and signal analysis studies have shown much more complex shapes. OBJECTIVE: We systematically investigated P-wave complexity in normal volunteers using high-fidelity electrocardiographic techniques without filtering. METHODS: We recorded 5-min multichannel ECGs in 16 healthy volunteers. Noise and interference were reduced by averaging over 300 beats per recording...
July 2016: Journal of Electrocardiology
Paolo Emilio Puddu
André, Julien, Auguste Jouve was born in Marseilles on June 10, 1909 son of Xavier Marie Francois Louis Jouve MD and Marie Louise Charlotte Vigliengo his wife. He had a brilliant medical career in Marseilles: Resident at Marseilles Hospitals in 1931, major of his promotion, then an Assistant in 1943 and a Chief in 1951, to become Associate Professor of Medicine in 1946 and finally Full Professor of Clinical and Experimental Cardiology in 1954. Fellow of several Cardiological Societies, he became President of the French Society of Cardiology in 1968, Vice-President of the European Society of Cardiology in 1972 and finally President of the French College of Vascular Pathology in 1973...
March 2016: Journal of Electrocardiology
Josef P Barnes, Peter R Johnston
Robust Generalised Cross-Validation was proposed recently as a method for determining near optimal regularisation parameters in inverse problems. It was introduced to overcome a problem with the regular Generalised Cross-Validation method in which the function that is minimised to obtain the regularisation parameter often has a broad, flat minimum, resulting in a poor estimate for the parameter. The robust method defines a new function to be minimised which has a narrower minimum, but at the expense of introducing a new parameter called the robustness parameter...
February 1, 2016: Computers in Biology and Medicine
Barbara J Drew, Claire E Sommargren, Gil D Tolan, Peter W Macfarlane, Galen S Wagner, David G Strauss, Martin C Burke, Paul D Kligfield, Ian Rowlandson, Robert L Lux
At the April, 2015 International Society for Computerized Electrocardiology (ISCE) Annual Conference in San Jose, CA, a special session entitled Remembering Ron & Rory was held to pay tribute to the extraordinary work and lives of two experts in electrocardiology. The session was well attended by conference attendees, Childers' family members and friends, and additional colleagues who traveled to San Jose solely to participate in this session. The purpose of the present paper is to document the spirit of this special session as faithfully as possible using the words of the session speakers...
November 2015: Journal of Electrocardiology
Yoshiaki Yamaguchi, Koichi Mizumaki, Kunihiro Nishida, Tamotsu Sakamoto, Naoya Kataoka, Yosuke Nakatani, Hiroshi Inoue
BACKGROUND: Little is known about time-dependent changes in QT dynamics after initiation of atrial fibrillation (AF) and after restoration of sinus rhythm (SR) in patients with paroxysmal AF. METHODS: Beat-to-beat QT and RR intervals in CM5 lead were measured automatically in 13 patients with both AF and SR on the single 24-hour Holter electrocardiology recording. QT-RR relation was analyzed at six periods of time: 1 hour before AF onset (Pre(0-1h)), 0-1 hour and 4-5 hours after AF onset (AF(0-1h) and AF(4-5h)), and 0-1 hour, 2-3 hours, and 4-5 hours after the restoration of SR (SR(0-1h), SR(2-3h), and SR(4-5h))...
December 2015: Pacing and Clinical Electrophysiology: PACE
Andrés Ricardo Pérez-Riera, Frank I Marcus
No abstract text is available yet for this article.
September 2015: Journal of Electrocardiology
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