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https://www.readbyqxmd.com/read/28087552/screening-for-atrial-fibrillation-using-economical-and-accurate-technology-safety-a-pilot-study
#1
Mark Lown, Arthur Yue, George Lewith, Paul Little, Mike Moore
INTRODUCTION: Atrial fibrillation (AF) is a cause of stroke and a marker of atherosclerosis and of all patients with stroke, around 17% have AF. The screening and treatment of AF could prevent about 12% of all strokes. Several relatively low-cost devices with good accuracy now exist which can detect AF including WatchBP and AliveCor. However, they can only measure the ECG or pulse over short time periods. Inexpensive devices such as heart rate monitors, which are widely available, can measure heart rate for prolonged periods and may have potential in screening for AF...
January 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28077133/t1-and-t2-mapping-for-evaluation-of-myocardial-involvement-in-patients-with-anca-associated-vasculitides
#2
Simon Greulich, Agnes Mayr, Daniel Kitterer, Joerg Latus, Joerg Henes, Hannah Steubing, Philipp Kaesemann, Alexandru Patrascu, Andreas Greiser, Stefan Groeninger, Niko Braun, M Dominik Alscher, Udo Sechtem, Heiko Mahrholdt
BACKGROUND: Myocardial involvement in AAV patients might be silent, presenting with no or nonspecific symptoms, normal ECG, and preserved left-ventricular ejection fraction (LV-EF). Since up to 50% of deaths in these patients may be due to myocardial involvement, a reliable diagnostic tool is warranted. In contrast to LGE-CMR, which has its strengths in detecting focal inflammatory or fibrotic processes, recent mapping techniques are able to detect even subtle, diffuse inflammatory or fibrotic processes...
January 6, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28057231/anterior-t-wave-inversion-in-young-white%C3%A2-athletes-and-nonathletes-prevalence-and-significance
#3
Aneil Malhotra, Harshil Dhutia, Sabiha Gati, Tee-Joo Yeo, Helder Dores, Rachel Bastiaenen, Rajay Narain, Ahmed Merghani, Gherardo Finocchiaro, Nabeel Sheikh, Alexandros Steriotis, Abbas Zaidi, Lynne Millar, Elijah Behr, Maite Tome, Michael Papadakis, Sanjay Sharma
BACKGROUND: Anterior T-wave inversion (ATWI) on electrocardiography (ECG) in young white adults raises the possibility of cardiomyopathy, specifically arrhythmogenic right ventricular cardiomyopathy (ARVC). Whereas the 2010 European consensus recommendations for ECG interpretation in young athletes state that ATWI beyond lead V1 warrants further investigation, the prevalence and significance of ATWI have never been reported in a large population of asymptomatic whites. OBJECTIVES: This study investigated the prevalence and significance of ATWI in a large cohort of young, white adults including athletes...
January 3, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28054710/atypical-surface-ecg-complicating-the-diagnosis-of-bundle-branch-reentry-tachycardia
#4
Christopher Reithmann, Bernhard Herkommer, Thomas Remp, Michael Fiek
BACKGROUND: Typical left bundle branch block (LBBB) during ventricular tachycardia (VT) is a diagnostic criterion of bundle branch reentry tachycardia (BBRT) with activation of the right bundle in the anterograde direction. METHODS AND RESULTS: 11 patients (7 male, 60 ± 12 years) with non-ischemic cardiomyopathy (left ventricular ejection fraction 37 ± 16 %) presenting with BBRT were successfully treated by ablation of the right bundle. Among them, 5 patients had atypical surface ECGs differing from a typical left bundle branch block during the VT...
January 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28052814/the-diagnostic-yield-of-implantable-loop-recorders-in-unexplained-syncope-a-systematic-review-and-meta-analysis
#5
Monica Solbiati, Giovanni Casazza, Franca Dipaola, Franca Barbic, Maja Caldato, Nicola Montano, Raffaello Furlan, Robert S Sheldon, Giorgio Costantino
BACKGROUND: Guidelines recommend that implantable loop recorders (ILRs) are used in the evaluation of people with recurrent unexplained syncope in the absence of high-risk criteria, and in high-risk patients after a negative evaluation. The aim of this systematic review was to analyze the diagnostic yield of ILRs in these patients. METHODS: We performed a systematic search in order to retrieve studies enrolling adults undergoing ILR implantation for undetermined syncope...
December 22, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28044391/initial-electrocardiogram-as-determinant-of-hospital-course-in-st-elevation-myocardial-infarction
#6
Michael A Millard, Vijaiganesh Nagarajan, Luke C Kohan, Robert C Schutt, Ellen C Keeley
BACKGROUND: A proportion of patients with ST elevation myocardial infarction (STEMI) have an initial electrocardiogram (ECG) that is nondiagnostic and are definitively diagnosed on a subsequent ECG. Our aim was to assess whether patients with a nondiagnostic initial ECG are different than those with a diagnostic initial ECG. METHODS: We collected demographic, ECG, medication, angiographic, and in-hospital clinical outcome data in consecutive patients undergoing primary percutaneous coronary intervention for STEMI at our institution from June 2009 to June 2013...
January 3, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28040865/cse-database-extended-annotations-and-new-recommendations-for-ecg-software-testing
#7
Radovan Smíšek, Lucie Maršánová, Andrea Němcová, Martin Vítek, Jiří Kozumplík, Marie Nováková
Nowadays, cardiovascular diseases represent the most common cause of death in western countries. Among various examination techniques, electrocardiography (ECG) is still a highly valuable tool used for the diagnosis of many cardiovascular disorders. In order to diagnose a person based on ECG, cardiologists can use automatic diagnostic algorithms. Research in this area is still necessary. In order to compare various algorithms correctly, it is necessary to test them on standard annotated databases, such as the Common Standards for Quantitative Electrocardiography (CSE) database...
December 31, 2016: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28030578/use-of-ecg-and-other-simple-non-invasive-tools-to-assess-pulmonary-hypertension
#8
Gabor Kovacs, Alexander Avian, Vasile Foris, Maria Tscherner, Xhylsime Kqiku, Philipp Douschan, Gerhard Bachmaier, Andrea Olschewski, Marco Matucci-Cerinic, Horst Olschewski
BACKGROUND: There is a broad consensus that pulmonary hypertension (PH) is to be diagnosed by right heart catheterization (RHC) and that the most important non-invasive tool is echocardiography. However, the role of simple non-invasive tools in the work-up of PH is not clearly defined. We hypothesized that the use of simple non-invasive techniques may help to guide important decisions in the diagnostics of pulmonary hypertension. OBJECTIVES: We aimed to develop an algorithm with the use of simple, non-invasive tools in order to identify patients with very high or very low likelihood of PH...
2016: PloS One
https://www.readbyqxmd.com/read/28029558/radiation-dose-levels-of-retrospectively-ecg-gated-coronary-ct-angiography-using-70-kvp-tube-voltage-in-patients-with-high-or-irregular-heart-rates
#9
Mathias Meyer, Holger Haubenreisser, Uwe Joseph Schoepf, Rozemarijn Vliegenthart, Melissa M Ong, Christina Doesch, Sonja Sudarski, Martin Borggrefe, Stefan O Schoenberg, Thomas Henzler
RATIONALE AND OBJECTIVES: Despite ongoing technical refinements, coronary computed tomography angiography (cCTA) remains challenging in its diagnostic value by electrocardiographic (ECG) misregistration and motion artifacts, which commonly occur in patients with atrial fibrillation and high or irregular heart rates. The aim of this study was to evaluate the radiation dose and the number of inconclusive coronary segments at cCTA using retrospective ECG gating at 100 and 70 kV. MATERIALS AND METHODS: With institutional review board approval, 154 patients (median age 54 years, 98 men) with high or irregular heart rate prospectively underwent retrospectively ECG-gated cCTA without tube current modulation on a third-generation dual-source computed tomography (DSCT) system at 70 kV (n = 103) or on a second-generation DSCT system at 100 kV (n = 51)...
October 28, 2016: Academic Radiology
https://www.readbyqxmd.com/read/28027760/ct-angiography-for-planning-transcatheter-aortic-valve-replacement-using-automated-tube-voltage-selection-image-quality-and-radiation-exposure
#10
Stefanie Mangold, Carlo N De Cecco, U Joseph Schoepf, Taylor S Kuhlman, Akos Varga-Szemes, Damiano Caruso, Taylor M Duguay, Christian Tesche, Thomas J Vogl, Konstantin Nikolaou, Daniel H Steinberg, Julian L Wichmann
PURPOSE: To assess image quality and accuracy of CT angiography (CTA) for transcatheter aortic valve replacement (TAVR) planning performed with 3rd generation dual-source CT (DSCT). MATERIAL AND METHODS: We evaluated 125 patients who underwent TAVR-planning CTA on 3rd generation DSCT. A two-part protocol was performed including retrospectively ECG-gated coronary CTA (CCTA) and prospectively ECG-triggered aortoiliac CTA using 60mL of contrast medium. Automated tube voltage selection and advanced iterative reconstruction were applied...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28027746/image-quality-of-ct-angiography-using-model-based-iterative-reconstruction-in-infants-with-congenital-heart-disease-comparison-with-filtered-back-projection-and-hybrid-iterative-reconstruction
#11
Qianjun Jia, Jian Zhuang, Jun Jiang, Jiahua Li, Meiping Huang, Changhong Liang
PURPOSE: To compare the image quality, rate of coronary artery visualization and diagnostic accuracy of 256-slice multi-detector computed tomography angiography (CTA) with prospective electrocardiographic (ECG) triggering at a tube voltage of 80kVp between 3 reconstruction algorithms (filtered back projection (FBP), hybrid iterative reconstruction (iDose(4)) and iterative model reconstruction (IMR)) in infants with congenital heart disease (CHD). METHODS: Fifty-one infants with CHD who underwent cardiac CTA in our institution between December 2014 and March 2015 were included...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28017302/cardiodynamicsgram-as-a-new-diagnostic-tool-in-coronary-artery-disease-patients-with-nondiagnostic-electrocardiograms
#12
Muqing Deng, Min Tang, Cong Wang, Liang Shan, Linfeng Zhang, Jingtao Zhang, Weiming Wu, Ling Xia
Cardiodynamicsgram (CDG) has emerged recently as a noninvasive spatiotemporal electrocardiographic method for subtle cardiac dynamics information analysis within electrocardiogram (ECG). This study sought to evaluate the clinical utility of CDG for early coronary artery disease (CAD) detection in suspected patients with CAD presenting with nondiagnostic ECGs. A total of 421 suspected patients with CAD presenting with nondiagnostic ECG were enrolled. Standard 12-lead ECG and CDG were performed simultaneously, 1 day before invasive coronary angiography...
December 2, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28002025/increased-beat-to-beat-t-wave-variability-in-myocardial-infarction-patients
#13
Muhammad A Hasan, Derek Abbott, Mathias Baumert, Sridhar Krishnan
The purpose of this study was to investigate the beat-to-beat variability of T-waves (TWV) and to assess the diagnostic capabilities of T-wave-based features for myocardial infarction (MI). A total of 148 recordings of standard 12-lead electrocardiograms (ECGs) from 79 MI patients (22 females, mean age 63±12 years; 57 males, mean age 57±10 years) and 69 recordings from healthy subjects (HS) (17 females, 42±18 years; 52 males, 40±13 years) were studied. For the quantification of beat-to-beat QT intervals in ECG signal, a template-matching algorithm was applied...
December 21, 2016: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/27992034/electrocardiogram-performance-in-the-diagnosis-of-left-ventricular-hypertrophy-in-hypertensive-patients-with-left-bundle-branch-block
#14
Paula Freitas Martins Burgos, Bráulio Luna, Francisco de Assis Costa, Maria Teresa Nogueira Bombig, Dilma de Souza, Henrique Tria Bianco, Japy Angelini Oliveira, Maria Cristina de Oliveira Izar, Francisco Antonio Helfenstein Fonseca, Rui Póvoa
Background: Left ventricular hypertrophy (LVH) is an important risk factor for cardiovascular events, and its detection usually begins with an electrocardiogram (ECG). Objective: To evaluate the impact of complete left bundle branch block (CLBBB) in hypertensive patients in the diagnostic performance of LVH by ECG. Methods: A total of 2,240 hypertensive patients were studied. All of them were submitted to an ECG and an echocardiogram (ECHO)...
December 19, 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27988273/the-association-of-maximum-troponin-values-post-out-of-hospital-cardiac-arrest-with-electrocardiographic-findings-cardiac-reperfusion-procedures-and-survival-to-discharge-a-sub-study-of-roc-primed
#15
Laurie J Morrison, Sean M Devlin, Michael C Kontos, Sheldon Cheskes, Tom P Aufderheide, Jim Christenson, Joseph P Ornato, Ian G Stiell, Valeria E Rac, Andrew J Thomas, Jane G Wigginton, Paul Dorian
BACKGROUND: The role of Troponin (Tn) levels in the management of patients post out-of-hospital cardiac arrest (OHCA) is unclear. METHODS: All OHCA patients enrolled in the Resuscitation Outcomes Consortium Prehospital Resuscitation using an IMpedance valve and Early versus Delayed analysis trial and admitted to hospital with a Tn level and a 12-lead electrocardiogram were stratified by ST elevation (STE) or no STE in a regression model for survival to discharge adjusted for Utstein predictors and site...
February 2017: Resuscitation
https://www.readbyqxmd.com/read/27968784/improving-stemi-screening-by-utilizing-a-diagnostic-ecg-algorithm-in-the-monitoring-environment
#16
Reza Firoozabadi, Richard E Gregg, Saeed Babaeizadeh
No abstract text is available yet for this article.
November 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27968776/the-electrocardiogram-of-the-neonate-and-infant
#17
Konrad Brockmeier, Rewa Nazal, Narayanswami Sreeram
The ECG in children has a number of characteristic differences compared to the ECG of the adult. The transition of the ECG in neonates after birth represents dynamic changes of the circulatory system due to the postnatal adaptation, different physiologic properties of the fetal and neonatal myocardium, the location and orientation of the heart in the chest and influence of body mass during that period and later on in childhood. The complexity of the changes implies a broad variation of ECG changes during the first days and weeks of life, whose interpretation requires expert knowledge...
November 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27936877/-a-rare-ecg-manifestation-of-left-sided-pneumothorax-inferior-stemi-with-precordial-brugada-pattern
#18
Attila Frigy, Ildikó Kocsis, Lajos Fehérvári, Lehel Máthé
Recognition and identification of the cause of non-coronary ST elevation is important in daily practice, mainly for avoiding unnecessary diagnostic and therapeutic procedures. In this case, a rare cause, spontaneous, left sided tension pneumothorax was in the background of the suddenly appearing, complex ECG changes - ST elevation mimicking inferior wall myocardial infarction associated with type 1 Brugada pattern ("coved" ST-segment elevation ≥ 2 mm) in the precordial leads. The clinical picture and course, the differential diagnostic problems related to the case and the possible causes of the ECG changes will be presented...
December 2016: Orvosi Hetilap
https://www.readbyqxmd.com/read/27931763/usefulness-of-synthesized-18-lead-electrocardiography-in-the-diagnosis-of-st-elevation-myocardial-infarction-a-pilot-study
#19
Tadashi Ashida, Shigemasa Tani, Ken Nagao, Tsukasa Yagi, Naoya Matsumoto, Atsushi Hirayama
OBJECTIVE: This was a pilot retrospective case-series study performed to investigate whether synthesized 18-lead electrocardiogram (ECG) could improve the accuracy of infarction site diagnosis in patients presenting with ST-elevation myocardial infarction (STEMI). METHOD: Of 103 consecutive patients with acute coronary syndrome who underwent emergency coronary angiography between October 1, 2014 and December 10, 2015, 33 patients fulfilling the diagnostic criteria for STEMI were enrolled in this study...
November 25, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27931558/time-to-shift-from-contemporary-to-high-sensitivity-cardiac-troponin-in-diagnosis-of-acute-coronary-syndromes
#20
REVIEW
Jamshed J Dalal, C K Ponde, Brian Pinto, C N Srinivas, Joy Thomas, Sunil Kumar Modi, Sanjay Mehta, Suvin Shetty, Manimarane, Bhupen Desai
Early rule-in and rule-out of non-ST-segment elevation myocardial infarction (NSTEMI) is a challenge. In patients with inconclusive findings on ECG, cardiac biomarkers play a crucial role in the diagnosis. The introduction of the new high-sensitive cardiac troponin test (hs-TnI assay) has changed the landscape of NSTEMI diagnosis. The new hs-TnI assay can detect troponin values at a lower level compared with a contemporary cardiac troponin (cTn) assay. The hs-cTnI assay has a coefficient of variation of ≤10%, well below the 99th percentile value...
November 2016: Indian Heart Journal
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