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Supraventricular ectopic beats

Jennifer M Cavallari, Shona C Fang, Ellen A Eisen, Murray A Mittleman, David C Christiani
OBJECTIVES: Links between arrhythmias and particulate matter exposures have been found among sensitive populations. We examined the relationship between personal particulate matter ≤2.5 µm aerodynamic diameter (PM2.5) exposures and ectopy in a panel study of healthy welders. METHODS: Simultaneous ambulatory ECG and personal PM2.5 exposure monitoring with DustTrak Aerosol Monitor was performed on 72 males during work and non-work periods for 5-90 h (median 40 h)...
July 2016: Occupational and Environmental Medicine
Serkan Kiranyaz, Turker Ince, Ridha Hamila, Moncef Gabbouj
We propose a fast and accurate patient-specific electrocardiogram (ECG) classification and monitoring system using an adaptive implementation of 1D Convolutional Neural Networks (CNNs) that can fuse feature extraction and classification into a unified learner. In this way, a dedicated CNN will be trained for each patient by using relatively small common and patient-specific training data and thus it can also be used to classify long ECG records such as Holter registers in a fast and accurate manner. Alternatively, such a solution can conveniently be used for real-time ECG monitoring and early alert system on a light-weight wearable device...
2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Vessela Krasteva, Irena Jekova, Remo Leber, Ramun Schmid, Roger Abächerli
This study presents a 2-stage heartbeat classifier of supraventricular (SVB) and ventricular (VB) beats. Stage 1 makes computationally-efficient classification of SVB-beats, using simple correlation threshold criterion for finding close match with a predominant normal (reference) beat template. The non-matched beats are next subjected to measurement of 20 basic features, tracking the beat and reference template morphology and RR-variability for subsequent refined classification in SVB or VB-class by Stage 2...
2015: PloS One
Can Ye, B Kumar, Miguel Coimbra
Abstract-In this paper, a novel subject-adaptable heartbeat classification model is presented, in order to address the significant inter-person variations in ECG signals. A multi-view learning approach is proposed to automate subject adaptation using a small amount of unlabeled personal data, without requiring manual labeling. The designed subject-customized models consist of two models, namely, general classification model and specific classification model. The general model is trained using similar subjects out of a population dataset, where a pattern matching based algorithm is developed to select the subjects that are 'similar' to the particular test subject for model training...
August 13, 2015: IEEE Journal of Biomedical and Health Informatics
Serkan Kiranyaz, Turker Ince, Moncef Gabbouj
GOAL: This paper presents a fast and accurate patient-specific electrocardiogram (ECG) classification and monitoring system. METHODS: An adaptive implementation of 1-D convolutional neural networks (CNNs) is inherently used to fuse the two major blocks of the ECG classification into a single learning body: feature extraction and classification. Therefore, for each patient, an individual and simple CNN will be trained by using relatively small common and patient-specific training data, and thus, such patient-specific feature extraction ability can further improve the classification performance...
March 2016: IEEE Transactions on Bio-medical Engineering
Mintu P Turakhia, Aditya J Ullal, Donald D Hoang, Claire T Than, Jared D Miller, Karen J Friday, Marco V Perez, James V Freeman, Paul J Wang, Paul A Heidenreich
BACKGROUND: Identification of silent atrial fibrillation (AF) could prevent stroke and other sequelae. HYPOTHESIS: Screening for AF using continuous ambulatory electrocardiographic (ECG) monitoring can detect silent AF in asymptomatic in patients with known risk factors. METHODS: We performed a single-center prospective screening study using a wearable patch-based device that provides up to 2 weeks of continuous ambulatory ECG monitoring (iRhythm Technologies, Inc...
May 2015: Clinical Cardiology
Muna H Hammash, Debra K Moser, Susan K Frazier, Terry A Lennie, Melanie Hardin-Pierce
BACKGROUND: Weaning from mechanical ventilation to spontaneous breathing is associated with changes in the hemodynamic and autonomic nervous systems that are reflected by heart rate variability. Although cardiac dysrhythmias are an important manifestation of hemodynamic alterations, the impact of heart rate variability on the occurrence of dysrhythmias during weaning has not been specifically studied. OBJECTIVES: To describe differences in heart rate variability spectral power and occurrence of cardiac dysrhythmias at baseline and during the initial trial of weaning from mechanical ventilation and to evaluate the impact of heart rate variability during weaning on occurrence of dysrhythmias...
March 2015: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
Gerardo Bosco, Elena De Marzi, Pierantonio Michieli, Hesham R Omar, Enrico M Camporesi, Johnny Padulo, Antonio Paoli, Devanand Mangar, Maurizio Schiavon
OBJECTIVE: To demonstrate the utility of 12-lead Holter monitoring underwater. METHODS: A Holter monitor, recording a 12-lead electrocardiogram (ECG) underwater, was applied to 16 pre-trained volunteer scuba divers (13 males and three females). Dive computers were synchronized with the Holter recorder to correlate the ECG tracings with diving events. Our main objective was to demonstrate the utility of recording over a period of time a good quality 12-lead ECG underwater...
December 2014: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
Gabriele Vignati
In children, arrhythmias have an etiology, evolution and treatment strategy that often differs from that of adults. Ectopic beats are very common, but rarely need to be treated. Macroreentrant supraventricular tachycardia is the arrhythmia that usually requires a treatment intervention. Adenosine for tachycardia interruption and 1C anti-arrhythmic drugs for prevention of recurrences are the first-line treatment. Automatic supraventricular tachycardias are infrequent but are typical of the pediatric age; treatment should be targeted at rate control in addition to tachycardia interruption...
December 2014: Giornale Italiano di Cardiologia
Lilian Gomes, Telmo Pereira, Luís Martins
INTRODUCTION: Myotonic dystrophy is a multisystem disease associated with cardiac abnormalities that are responsible for high morbidity and mortality. It commonly affects conduction tissue, resulting in changes in heart rate that tend to progress with age. OBJECTIVE: The aim of the study was to assess overall cardiovascular risk and the risk of arrhythmias in patients with myotonic dystrophy type 1 (DM-1) and to correlate them with genetic study (CTG expansion size)...
December 2014: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
Chia-Hung Lin, Yi-Chun Du, Yung-Fu Chen, Tain-Song Chen
This paper proposes a method for multiple ECG beats recognition using novel grey relational analysis (GRA). Converts each QRS complex to a Fourier spectrum from ECG signals, the spectrum varies with the rhythm origin and conduction path. The variations of power spectra are observed in the range of 0 Hz-20 Hz in the frequency domain. According to the frequency-domain parameters, GRA performs to recognize the cardiac arrhythmias including the supraventricular ectopic beat, bundle branch ectopic beat, ventricular ectopic beat, and fusion beat...
August 2006: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
N Athanasiadis, M Katsiboulas, C Dimitriou, I Kostavassili, M Mavroidis, Ch Davos
BACKGROUND: Desmin null mice (Des-/-) develop a multisystem disorder involving cardiac, skeletal, and smooth muscle. Myocardial abnormalities include progressive degeneration, cardiomyocyte death, extensive calcification and fibrosis which lead to a dilated cardiomyopathy pattern. The aim of this study is to investigate the presence of arrhythmias in a Des-/- mouse model as compared to wild type (WT) mice. METHODS: Mice lacking desmin were generated by gene targeting via homologous recombination as previously describe...
July 15, 2014: Cardiovascular Research
James F Donohue, Dennis Niewoehner, Jean Brooks, Dianne O'Dell, Alison Church
BACKGROUND: The long-acting muscarinic antagonist (LAMA) umeclidinium (UMEC) and the combination of UMEC with the long-acting β2-agonist (LABA) vilanterol (UMEC/VI) are approved maintenance treatments for chronic obstructive pulmonary disease (COPD) in the US and EU. They are not indicated for the treatment of asthma. METHODS: In this 52-week, double-blind, placebo-controlled, parallel-group safety study (GSK study DB2113359; NCT01316887), patients were randomized 2:2:1 to UMEC/VI 125/25 mcg, UMEC 125 mcg, or placebo...
2014: Respiratory Research
Huifang Huang, Jie Liu, Qiang Zhu, Ruiping Wang, Guangshu Hu
BACKGROUND: The inter-patient classification schema and the Association for the Advancement of Medical Instrumentation (AAMI) standards are important to the construction and evaluation of automated heartbeat classification systems. The majority of previously proposed methods that take the above two aspects into consideration use the same features and classification method to classify different classes of heartbeats. The performance of the classification system is often unsatisfactory with respect to the ventricular ectopic beat (VEB) and supraventricular ectopic beat (SVEB)...
2014: Biomedical Engineering Online
Fatih Köksal Binnetoğlu, Kadir Babaoğlu, Gülcan Türker, Gürkan Altun
OBJECTIVE: This study aimed to evaluate the aetiology, spectrum, course and outcomes of neonates with arrhythmias observed in a tertiary neonatal intensive care unit from 2007 to 2012. METHODS: Neonates with rhythm problems were included. The results of electrocardiography (ECG), Holter ECG, echocardiography and biochemical analysis were evaluated. The long-term results of follow up were reviewed. RESULTS: Forty-five patients were male (68%) and 21 (32%) were female...
March 2014: Cardiovascular Journal of Africa
Joy Victor, Mangalore Amith Shenoy, Sameer Chadha, Felix Yang, Gerald Hollander, Jacob Shani
SESSION TITLE: Cardiovascular CasesSESSION TYPE: Case ReportsPRESENTED ON: Saturday, March 22, 2014 at 04:15 PM - 05:15 PMINTRODUCTION: Paroxysmal supraventricular tachycardia (PSVT) following blunt cardiac injury (BCI) is rare but reported in the literature. AV nodal reentrant tachycardia (AVNRT) is the commonest form of PSVT encountered in clinical practice. We present a unique case of AVNRT after a blunt chest trauma with concomitant pulmonary embolism. CASE PRESENTATION: An 18 year-old Hispanic man with no significant past medical history presented to the emergency room with two hours of palpitations after sustaining a hard blow to the left mid-sternum while playing basketball...
March 1, 2014: Chest
Antonio Vincenti, Elisa Passini, Paolo Fabbrini, Maria Carmen Luise, Stefano Severi, Simonetta Genovesi
Atrial fibrillation (AF) incidence is high in end-stage renal disease (ESRD) patients, and haemodialysis (HD) session may induce paroxysmal AF episodes. Structural atrium remodelling is common in ESRD patients, moreover, HD session induces rapid plasma electrolytes and blood volume changes, possibly favouring arrhythmia onset. Therefore, HD session represents a unique model to study in vivo the mechanisms potentially inducing paroxysmal AF episodes. Here, we present the case report of a patient in which HD regularly induced paroxysmal AF...
March 2014: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Zhancheng Zhang, Jun Dong, Xiaoqing Luo, Kup-Sze Choi, Xiaojun Wu
Automatic heartbeat classification is an important technique to assist doctors to identify ectopic heartbeats in long-term Holter recording. In this paper, we introduce a novel disease-specific feature selection method which consists of a one-versus-one (OvO) features ranking stage and a feature search stage wrapped in the same OvO-rule support vector machine (SVM) binary classifier. The proposed method differs from traditional approaches in that it focuses on the selection of effective feature subsets for distinguishing a class from others by making OvO comparison...
March 2014: Computers in Biology and Medicine
Simon Tilma Vistisen, Kristian Kjær Andersen, Christian Alcaraz Frederiksen, Hans Kirkegaard
Monitoring that can predict fluid responsiveness is an unsettled matter for spontaneously breathing patients. Based on the convincing results with dynamic monitoring based on preload variations induced by mechanical ventilation, we hypothesised that the extra systolic post-ectopic beat could constitute a similar intermittent preload shift inducing a brief variation in blood pressure and that the magnitude of this variation could predict the hemodynamic response to volume expansion in sedated pigs. Ten pigs were sedated and hemodynamically monitored and four intravascular volume shifts were made: blood depletion (25% of estimated blood volume; 660 ml), retransfusion (of 500 ml depleted blood), and two sequential volume expansions (500 ml colloid each)...
August 2014: Journal of Clinical Monitoring and Computing
Philip de Chazal
Two simple algorithms for supraventricular (SVEB) and ventricular ectopic beat (VEB) detection using the electrocardiogram (ECG) are presented. Both algorithms use time-domain features and a linear classifier. The first algorithm requires QRS detection only and the second algorithm requires P, QRS and T wave segmentation. Data was obtained from the 44 non-pacemaker recordings of the MIT-BIH arrhythmia database and contained approximately 100,000 beats. Performance assessment of the best system resulted in an accuracy of 94...
2013: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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