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https://www.readbyqxmd.com/read/28545282/-electrocardiogram-characteristics-of-patients-with-ventricular-arrhythmia-originating-from-the-distal-great-cardiac-vein
#1
R L Zheng, D P Zhou, J X Lin, Y C Li, J Li, J Li, R P Yin, J F Lin
Objective: To explore the electrocardiographic characteristics of patients with idiopathic ventricular arrhythmias (VAs) originating from different portions of distal great cardiac veins (DGCV). Methods: The study included 49 patients underwent successful RFCA of premature ventricular complex(PVCs)/ventricular tachycardia(VT) from different portions of the DGCV in our department from July 2009 to March 2016. The surface 12-lead electrocardiogram (ECG) and intraventricular ablation mapping features were analyzed...
April 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28541896/solving-inaccuracies-in-anatomical-models-for-electrocardiographic-inverse-problem-resolution-by-maximizing-reconstruction-quality
#2
Miguel Rodrigo, Andreu Climent, Alejandro Liberos, Ismael Hernandez-Romero, Angel Arenal, Javier Bermejo, Francisco Fernandez-Aviles, Felipe Atienza, Maria Guillem
Electrocardiographic Imaging (ECGI) has become an increasingly used technique for non-invasive diagnosis of cardiac arrhythmias, although the need for medical imaging technology to determine the anatomy hinders its introduction in the clinical practice. This work explores the ability of a new metric based on the inverse reconstruction quality for the location and orientation of the atrial surface inside the torso. Body surface electrical signals from 31 realistic mathematical models and four AF patients were used to estimate the optimal position of the atria inside the torso...
May 23, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28541600/elevated-high-sensitivity-troponin-does-not-indicate-the-presence-of-coronary-artery-disease-in-patients-presenting-with-supraventricular-tachycardia
#3
Martin Murer, Florim Cuculi, Stefan Toggweiler, Vanessa Weberndoerfer, Mabelle Young, Richard Kobza
BACKGROUND: Patients with supraventricular tachycardia (SVT) and patients with coronary artery disease (CAD) often present with similar symptoms (chest pain, shortness of breath), similar electrocardiographic changes and elevated high-sensitivity troponin (cTn). It is not clear whether troponin reflects critical CAD or is elevated due to other causes in patients presenting with SVT. The aim of this study was to assess the role of elevated troponin in patients presenting with SVT. METHODS: Patients undergoing radiofrequency ablation (RFA) for SVT and simultaneous coronary angiography at the Heart Centre Lucerne, Switzerland between January 2010 and October 2014 were included in this analysis...
May 25, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28539979/association-of-metabolic-syndrome-and-electrocardiographic-markers-of-subclinical-cardiovascular-disease
#4
Theodora W Elffers, Renée de Mutsert, Hildo J Lamb, Arie C Maan, Peter W Macfarlane, Ko Willems van Dijk, Frits R Rosendaal, J Wouter Jukema, Stella Trompet
BACKGROUND: The metabolic syndrome (MetS) and its components are well-established risk factors for cardiovascular diseases (CVD). It is inconclusive whether MetS and MetS score are associated with electrocardiographic markers of subclinical CVD, therefore we investigated this in a population without pre-existing CVD. METHODS: We performed a cross-sectional analysis in the Netherlands Epidemiology of Obesity study, a population-based cohort including 6671 participants aged 45-65...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28538417/clinical-and-electrocardiographic-characteristics-of-infarctional-ventricular-ectopic-beats-an-observational-study
#5
Yuechun Li, Shi Zhe-Wei, Zheng Cheng, Chen Guang-Yi, Zhou De-Pu, Li Xiao-Wei, Guan Xueqiang, Lin Jiafeng, Chen Peng
The purpose of this study was to explore the clinical and electrocardiographic characteristics of infarctional ventricular ectopic beats (IVEBs).Thirty-eight acute myocardial infarction (AMI) patients with IVEB and 109 AMI patients without IVEB were analyzed. The morphological changes of QRS complex, ST segment, and T wave were compared to IVEB with sinus rhythm from the same period and fully evolved phase.An IVEB QRS complex often revealed the right bundle branch block morphology, in addition to Q wave AMI; no-Q wave AMI also had IVEB...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28535809/safety-and-tolerability-of-adjunctive-rosiglitazone-treatment-for-children-with-uncomplicated-malaria
#6
Rosauro Varo, Valerie M Crowley, Antonio Sitoe, Lola Madrid, Lena Serghides, Rubao Bila, Helio Mucavele, Alfredo Mayor, Quique Bassat, Kevin C Kain
BACKGROUND: Despite the widespread use and availability of rapidly acting anti-malarials, the fatality rate of severe malaria in sub-Saharan Africa remains high. Adjunctive therapies that target the host response to malaria infection may further decrease mortality over that of anti-malarial agents alone. Peroxisome proliferator-activated receptor-gamma agonists (e.g. rosiglitazone) have been shown to act on several pathways implicated in the pathogenesis of severe malaria and may improve clinical outcome as an adjunctive intervention...
May 23, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28534205/outflow-tract-ventricular-arrhythmias-electrocardiographic-features-in-relation-to-mapping-and-ablation
#7
REVIEW
Deepak Padmanabhan, Alan Sugrue, Prakriti Gaba, Samuel J Asirvatham
Ventricular arrhythmia arising from the outflow tracts can manifest itself as frequent premature ventricular complexes (PVCs), salvos of ventricular tachycardia (VT), and/or sustained VT. It is amenable to management with medication and catheter ablation without need for an intracardiac defibrillator. The electrocardiogram (ECG) is a crucial tool in the management of these patients as it is can help localize the site of origin, thereby helping guide the electrophysiologist. An appreciation of the unique anatomy of the outflow tracts as well as their relationships with the surrounding structures is essential in interpreting the ECG...
May 22, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28534204/-ventricular-arrhythmias-in-ion-channel-diseases
#8
REVIEW
Christian Wolpert, Mara Vogel, Christian Nagel, Claudia Herrera-Siklody, Norman Rüb
In patients with ion channel disease the predominant arrhythmias are polymorphic ventricular tachycardias (VT), torsade de pointes tachycardia and ventricular fibrillation (VF). In only extremely rare cases is very rapid monomorphic ventricular tachycardia observed. This is why implantable cardioverter-defibrillators (ICDs) should always be programmed for treatment of VF only with high detection rates to avoid inappropriate discharges. In idiopathic VF and catecholaminergic polymorphic ventricular tachycardia (CPVT), no baseline electrocardiographic abnormalities can be detected, whereas in Brugada syndrome, long QT syndrome, early repolarisation syndrome and Anderson-Tawil syndrome alterations of the baseline ECG are very important to identify patients at risk...
May 22, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28532506/clinical-evaluation-of-myocardial-involvement-in-acute-myopericarditis-in-young-adults
#9
Ersin Saricam, Yasemin Saglam, Tuncay Hazirolan
BACKGROUND: Myocardial involvement in young adults has various causes. Acute myopericarditis is one of the myocardial involvements in young adults. It is easy to confuse with acute ST-elevation myocardial infarction because of the electrocardiographic features. This study aims to investigate a number of imaging techniques and clinical features for acute myopericarditis in young adults (<30 years of age). METHODS: This retrospective study included 147 patients selected from the 2147 patients at the age of <30 with acute chest pain admitted into emergency service between 2010 and 2016...
May 22, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28532180/premature-atrial-complexes-in-an-ischemic-stroke-population-and-risk-of-recurrent-stroke-a-systematic-review
#10
Michala Herskind Sejr, Sam Riahi, Torben Bjerregaard Larsen, Jens Cosedis Nielsen, Peter Brønnum Nielsen
Premature atrial complexes (PACs) have been proposed as a possible mediator between normal sinus rhythm and atrial fibrillation (AF). The aim of this study was to summarize the available knowledge of association between PACs and recurrent stroke or transient ischemic attack (TIA) in ischemic stroke patients. Areas covered: In this systematic review, we investigated the risk of recurrent events in patients who experienced ischemic stroke or TIA. Occurrence of PACs in electrocardiographic monitoring after index stroke/TIA was required...
May 22, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28529306/normalization-of-diffuse-st-depression-with-avr-elevation-after-rehydration-in-a-patient-with-severe-aortic-stenosis
#11
Sachin R Patel, Vikas J Patel, Brittany Clark, George Rust
BACKGROUND Isolated ST elevation in lead aVR in combination with global ST depression with normalization after rehydration is a unique electrocardiographic pattern that is associated with a broad range of diagnoses. Its association with left main coronary artery disease and other acute coronary syndromes suggest the need for early and aggressive cardiac evaluation. CASE REPORT A 53-year-old man presented with altered mental status and loss of consciousness. He was unresponsive, hypotensive, tachycardiac, and diaphoretic...
May 22, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28529205/effectiveness-and-safety-of-bedaquiline-containing-regimens-in-the-treatment-of-mdr-and-xdr-tb-a-multicentre-study
#12
Sergey E Borisov, Keertan Dheda, Martin Enwerem, Rodolfo Romero Leyet, Lia D'Ambrosio, Rosella Centis, Giovanni Sotgiu, Simon Tiberi, Jan-Willem Alffenaar, Andrey Maryandyshev, Evgeny Belilovski, Shashank Ganatra, Alena Skrahina, Onno Akkerman, Alena Aleksa, Rohit Amale, Janina Artsukevich, Judith Bruchfeld, Jose A Caminero, Isabel Carpena Martinez, Luigi Codecasa, Margareth Dalcolmo, Justin Denholm, Paul Douglas, Raquel Duarte, Aliasgar Esmail, Mohammed Fadul, Alexey Filippov, Lina Davies Forsman, Mina Gaga, Julia-Amaranta Garcia-Fuertes, José-María García-García, Gina Gualano, Jerker Jonsson, Heinke Kunst, Jillian S Lau, Barbara Lazaro Mastrapa, Jorge Lazaro Teran Troya, Selene Manga, Katerina Manika, Pablo González Montaner, Jai Mullerpattan, Suzette Oelofse, Martina Ortelli, Domingo Juan Palmero, Fabrizio Palmieri, Antonella Papalia, Apostolos Papavasileiou, Marie-Christine Payen, Emanuele Pontali, Carlos Robalo Cordeiro, Laura Saderi, Tsetan Dorji Sadutshang, Tatsiana Sanukevich, Varvara Solodovnikova, Antonio Spanevello, Sonam Topgyal, Federica Toscanini, Adrian R Tramontana, Zarir Farokh Udwadia, Pietro Viggiani, Veronica White, Alimuddin Zumla, Giovanni Battista Migliori
Large studies on bedaquiline used to treat multidrug-resistant (MDR-) and extensively drug-resistant tuberculosis (XDR-TB) are lacking. This study aimed to evaluate the safety and effectiveness of bedaquiline-containing regimens in a large, retrospective, observational study conducted in 25 centres and 15 countries in five continents.428 culture-confirmed MDR-TB cases were analysed (61.5% male; 22.1% HIV-positive, 45.6% XDR-TB). MDR-TB cases were admitted to hospital for a median (interquartile range (IQR)) 179 (92-280) days and exposed to bedaquiline for 168 (86-180) days...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28528724/twelve-lead-ambulatory-electrocardiographic-monitoring-in-brugada-syndrome-potential-diagnostic-and-prognostic-implications
#13
Belinda Gray, Adrienne Kirby, Peter Kabunga, Saul B Freedman, Laura Yeates, Ajita Kanthan, Caroline Medi, Anthony Keech, Christopher Semsarian, Raymond W Sy
BACKGROUND: Patients with Brugada syndrome (BrS) are diagnosed and risk stratified on the basis of a spontaneous or drug-induced type 1 electrocardiographic (ECG) pattern, often at single time points not accounting for variation throughout the day. OBJECTIVES: The purpose of this study was to prospectively assess the overall burden of type 1 Brugada ECG changes using 12-lead 24-hour Holter monitoring and evaluate association with cardiac events. METHODS: From July 1, 2013 to December 31, 2015, patients with BrS were recruited from 3 Australian centers and the Australian Genetic Heart Disease Registry...
June 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28527890/mechano-electric-coupling-heterogeneity-in-repolarization-and-the-electrocardiographic-t-wave
#14
REVIEW
V M F Meijborg, C N W Belterman Va, J M T de Bakker, R Coronel, C E Conrath
Stretch influences repolarization by mechano-electric coupling (MEC) and contributes to arrhythmogenesis. Although there is an abundance of research on electrophysiological effects of MEC, it is still unclear how MEC translates to the ECG. We aim to provide an overview of the MEC research focused on the ECG and the underlying changes in electrophysiology. In addition, we present new data on the effect of left ventricular pressure on the electrocardiographic T-wave. We show that an increase in left ventricular pressure leads to prolonged QT-intervals with increased amplitudes of the STT-segment...
May 17, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28522305/the-girona-territori-cardioprotegit-project-performance-evaluation-of-public-defibrillators
#15
Pablo Loma-Osorio, Maria Nuñez, Jaime Aboal, Daniel Bosch, Pau Batlle, Ester Ruiz de Morales, Rafael Ramos, Josep Brugada, Hisao Onaga, Alex Morales, Josep Olivet, Ramon Brugada
INTRODUCTION AND OBJECTIVES: In recent years, public access defibrillation programs have exponentially increased the availability of automatic external defibrillators (AED) in public spaces but there are no data on their performance in our setting. We conducted a descriptive analysis of the performance of AED since the launch of a public defibrillation program in our region. METHODS: A retrospective analysis was conducted of electrocardiographic tracings and the performance of AED in a public defibrillation program from June 2011 to June 2015 in the province of Girona, Spain...
May 15, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28516131/the-cardiac-sympathetic-nerve-activity-in-the-elderly-is-attenuated-in-the-right-lateral-decubitus-position
#16
Konosuke Sasaki, Mayu Haga, Sarina Bao, Haruka Sato, Yoshikatsu Saiki, Ryoko Maruyama
Objectives: The aim of this study was to evaluate the effect of the supine, left lateral decubitus, and right lateral decubitus positions on autonomic nervous activity in elderly adults by using spectral analysis of heart rate variability (HRV). Method: Forty-five adults aged 73.6 ± 5.7 years were enrolled. After lying in the supine position, all participants moved to the lateral decubitus positions in a random order and maintained the positions for 10 min, while electrocardiographic data were recorded to measure HRV...
January 2017: Gerontology & Geriatric Medicine
https://www.readbyqxmd.com/read/28515820/arterial-velocity-pulse-index-as-a-novel-marker-of-atherosclerosis-using-pulse-wave-analysis-on-high-sensitivity-troponin-t-in-hypertensive-patients
#17
Takashi Hitsumoto
BACKGROUND: The arterial velocity pulse index (AVI) is explored as a novel marker of atherosclerosis using pulse wave analysis in clinical settings. Recent clinical studies have reported that the level of high-sensitivity troponin T (hs-cTnT) is an important biomarker in hypertensive patients. The aim of this study was to clarify the impact of AVI on hs-cTnT in these patients. METHODS: This study enrolled 455 hypertensive outpatients (181 males and 274 females; mean age, 65 ± 11 years (mean ± standard deviation)) without a history of cardiovascular events...
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28515002/electrocardiographic-qrs-t-angle-and-the-risk-of-incident-silent-myocardial-infarction-in-the-atherosclerosis-risk-in-communities-study
#18
Zhu-Ming Zhang, Pentti M Rautaharju, Ronald J Prineas, Larisa Tereshchenko, Elsayed Z Soliman
BACKGROUND: Silent myocardial infarction (SMI) accounts for about half of the total number of MIs, and is associated with poor prognosis as is clinically documented MI (CMI). The electrocardiographic (ECG) spatial QRS/T angle has been a strong predictor of cardiovascular outcomes. Whether spatial QRS/T angle also is predictive of SMI, and the easy-to-obtain frontal QRS/T angle will show similar association are currently unknown. METHODS: We examined the association between the spatial and frontal QRS/T angles, separately, with incident SMI among 9498 participants (mean age 54years, 57% women, and 20% African-American), who were free of cardiovascular disease at baseline (visit 1, 1987-1989) from the Atherosclerosis Risk in Communities (ARIC) study...
May 4, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28513513/electrocardiographic-changes-and-troponin-t-levels-in-children-with-severe-malaria-anemia-and-heart-failure
#19
W E Sadoh, J O Uduebor
BACKGROUND: Severe malaria anemia is a major cause of childhood heart failure in malaria endemic countries. The resulting hypoxic-ischemic injuries may cause myocardial damage detectable by electrocardiogram (ECG) and elevated troponin T (cTnT) levels. OBJECTIVE: Evaluate the ECG changes and cTnT levels in children with severe malaria anemia compared with those who had uncomplicated malaria without anemia. METHODS: Consecutive children with severe malaria anemia were recruited as subjects while controls were age- and gender-matched children with uncomplicated malaria without anemia...
May 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28513211/image-quality-of-low-radiation-dose-left-atrial-ct-using-filtered-back-projection-and-an-iterative-reconstruction-algorithm-intra-individual-comparison-in-unselected-patients-undergoing-pulmonary-vein-isolation
#20
Ute Lina Fahlenkamp, Ivan Diaz Ramirez, Moritz Wagner, Carsten Schwenke, Alexander Huppertz, Bernd Hamm, Alexander Lembcke
Background Computed tomography (CT) of the left atrium (LA) is performed prior to pulmonary vein isolation (PVI) to improve success of circumferential ablation for atrial fibrillation. The ablation procedure itself exposes patients to substantial radiation doses, therefore radiation dose reduction in pre-ablational imaging is of concern. Purpose To assess and compare diagnostic performance of low-radiation dose preprocedural CT in patients scheduled for PVI using two types of reconstruction algorithms. Material and Methods Forty-six patients (61 ± 10 years) scheduled for PVI were enrolled in this study irrespective of body-mass-index or cardiac rhythm at examination...
January 1, 2017: Acta Radiologica
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