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ambulatory ECG monitoring

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https://www.readbyqxmd.com/read/29735633/atrial-fibrillation-detection-during-24-hour-ambulatory-blood-pressure-monitoring-comparison-with-24-hour-electrocardiography
#1
Anastasios Kollias, Antonios Destounis, Petros Kalogeropoulos, Konstantinos G Kyriakoulis, Angeliki Ntineri, George S Stergiou
This study assessed the diagnostic accuracy of a novel 24-hour ambulatory blood pressure (ABP) monitor (Microlife WatchBP O3 Afib) with implemented algorithm for automated atrial fibrillation (AF) detection during each ABP measurement. One hundred subjects (mean age 70.6±8.2 [SD] years; men 53%; hypertensives 85%; 17 with permanent AF; 4 paroxysmal AF; and 79 non-AF) had simultaneous 24-hour ABP monitoring and 24-hour Holter monitoring. Among a total of 6410 valid ABP readings, 1091 (17%) were taken in ECG AF rhythm...
May 7, 2018: Hypertension
https://www.readbyqxmd.com/read/29671875/atrial-remodeling-and-ectopic-burden-in-recreational-athletes-implications-for-risk-of-atrial-fibrillation
#2
Adrian D Elliott, Rajiv Mahajan, Dominik Linz, Michael Stokes, Christian V Verdicchio, Melissa E Middeldorp, Andre La Gerche, Dennis H Lau, Prashanthan Sanders
BACKGROUND: Atrial remodeling, vagal tone and atrial ectopic triggers have been suggested to contribute to the increased incidence of atrial fibrillation (AF) in endurance athletes. How these parameters change with increased lifetime training hours is debated. HYPOTHESIS: We hypothesised that atrial remodeling occurs in proportion to total training history, thus contributing to the elevated risk of AF. METHODS: We recruited 99 recreational endurance athletes, subsequently grouped according to lifetime training hours, to undergo evaluation of atrial size, autonomic modulation and atrial ectopy...
April 19, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29623136/the-effects-of-continuous-positive-airway-pressure-on-premature-ventricular-contractions-and-ventricular-wall-stress-in-patients-with-heart-failure-and-sleep-apnea
#3
Sabri Seyis, Adnan Kazım Usalan, Ibrahim Rencuzogullari, Özge Kurmuş, Adil Can Gungen
Background: We aimed to investigate the effects of continuous positive airway pressure (CPAP) treatment on electrocardiography (ECG), premature ventricular contraction load on 24-hour Holter recordings, and implantable cardioverter defibrillator (ICD) shocks in patients with obstructive sleep apnea syndrome (OSAS) and heart failure. Methods: Patients with heart failure and ICD and patients with newly diagnosed OSAS were divided into two groups according to CPAP treatment...
2018: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29562087/passive-detection-of-atrial-fibrillation-using-a-commercially-available-smartwatch
#4
Geoffrey H Tison, José M Sanchez, Brandon Ballinger, Avesh Singh, Jeffrey E Olgin, Mark J Pletcher, Eric Vittinghoff, Emily S Lee, Shannon M Fan, Rachel A Gladstone, Carlos Mikell, Nimit Sohoni, Johnson Hsieh, Gregory M Marcus
Importance: Atrial fibrillation (AF) affects 34 million people worldwide and is a leading cause of stroke. A readily accessible means to continuously monitor for AF could prevent large numbers of strokes and death. Objective: To develop and validate a deep neural network to detect AF using smartwatch data. Design, Setting, and Participants: In this multinational cardiovascular remote cohort study coordinated at the University of California, San Francisco, smartwatches were used to obtain heart rate and step count data for algorithm development...
March 21, 2018: JAMA Cardiology
https://www.readbyqxmd.com/read/29558214/preliminary-assessment-of-a-novel-14-day-electrocardiographic-adhesive-patch-monitor-in-dogs
#5
Jonathan Lichtenberger, Kathryn M Meurs, Etienne Côté
Cardiac arrhythmias often are transient and might not be detected using conventional electrocardiographic (ECG) techniques. The adhesive patch monitor (APM) is a single-lead, lightweight, up to 14-day continuous ambulatory ECG monitor. This study aimed to prospectively assess its usability in four boxer dogs considered either to be healthy or to have arrhythmogenic right ventricular cardiomyopathy. Optimal recording was obtained by placing the APM on the left side of the animal's thorax, at the fifth intercostal space, slightly dorsal to the costochondral junction, and oriented either vertically or parallel to the long axis of the heart...
March 20, 2018: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/29534064/validation-of-a-genetic-risk-score-for-atrial-fibrillation-a-prospective-multicenter-cohort-study
#6
Evan D Muse, Nathan E Wineinger, Emily G Spencer, Melissa Peters, Riley Henderson, Yunyue Zhang, Paddy M Barrett, Steven P Rivera, Jay G Wohlgemuth, James J Devlin, Dov Shiffman, Eric J Topol
BACKGROUND: Atrial fibrillation (AF) is the most commonly encountered arrhythmia and is associated with an elevated risk of stroke. Improving the identification of patients with the highest risk for AF to enable appropriate surveillance and treatment, if necessary, is critical to reducing AF-associated morbidity and mortality. Multiple common single nucleotide polymorphisms (SNPs) are unequivocally associated with the lifetime risk of AF. In the current study we aimed to prospectively validate an AF genetic risk score (GRS) in previously undiagnosed patients at risk for AF...
March 2018: PLoS Medicine
https://www.readbyqxmd.com/read/29513133/qt-prolongation-and-sudden-cardiac-death-risk-in-hypertrophic-cardiomyopathy
#7
Salma I Patel, Michael J Ackerman, Fadi E Shamoun, Jeffrey B Geske, Steve R Ommen, William T Love, Stephen S Cha, Johan M Bos, Steven J Lester
INTRODUCTION: Risk assessment for sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM) remains complex. The goal of this study was to assess electrocardiogram (ECG)-derived risk factors on SCD in a large HCM population Methods: Retrospective review of adults with HCM evaluated at Mayo Clinic, Rochester, MN from 1 December 2002 to 31 December 2012 was performed. Data inclusive of ECG and 24-hour ambulatory Holter monitor were assessed. SCD events were documented by ventricular fibrillation (VF) noted on implantable cardioverter defibrillator (ICD), or appropriate VT or VF-terminating ICD shock...
March 7, 2018: Acta Cardiologica
https://www.readbyqxmd.com/read/29512493/wakefulness-evaluation-during-sleep-for-healthy-subjects-and-osa-patients-using-a-patch-type-device
#8
Heenam Yoon, Su Hwan Hwang, Sang Ho Choi, Jae-Won Choi, Yu Jin Lee, Do-Un Jeong, Kwang Suk Park
OBJECTIVES: Obstructive sleep apnea (OSA) is a major sleep disorder that causes insufficient sleep, which is linked with daytime fatigue and accidents. Long-term sleep monitoring can provide meaningful information for patients with OSA to prevent and manage their symptoms. Even though various methods have been proposed to objectively measure sleep in ambulatory environments, less reliable information was provided in comparison with standard polysomnography (PSG). Therefore, this paper proposes an algorithm for distinguishing wakefulness from sleep using a patch-type device, which is applicable for both healthy individuals and patients with OSA...
March 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29493801/validation-of-a-smartphone-based-event-recorder-for-arrhythmia-detection
#9
Deepika Narasimha, Nader Hanna, Hiroko Beck, Michael Chaskes, Robert Glover, Robert Gatewood, Mohamad Bourji, Gregory D Gudleski, Susan Danzer, Anne B Curtis
INTRODUCTION: Ambulatory cardiac monitoring devices such as external loop recorders (ELRs) are often used in the outpatient clinic to evaluate palpitations. However, ELRs can be bulky and uncomfortable to use, especially in public, at work, or in social situations. An alternative approach is a smartphone-based electrocardiographic (ECG) recorder/event recorder (Kardia Mobile [KM]), but the comparative diagnostic yield of each approach has not been studied. METHODS: Thirty-three patients with palpitations wore an ELR and carried a KM for a period of 14-30 days...
March 1, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29440183/ambulatory-blood-pressure-and-long-term-risk-for-atrial-fibrillation
#10
Valérie Tikhonoff, Tatiana Kuznetsova, Lutgarde Thijs, Nicholas Cauwenberghs, Katarzyna Stolarz-Skrzypek, Jitka Seidlerová, Sofia Malyutina, Natasza Gilis-Malinowska, Ewa Swierblewska, Kalina Kawecka-Jaszcz, Jan Filipovský, Krzysztof Narkiewicz, Gregory Y H Lip, Edoardo Casiglia, Jan A Staessen
OBJECTIVE: Data on the contribution of ambulatory blood pressure (ABP) components to the risk of developing atrial fibrillation (AF) are limited. We prospectively tested the hypothesis that ABP may represent a potentially modifiable risk factor for the development of AF in a European population study. METHODS: We recorded daytime blood pressure (BP) in 3956 subjects randomly recruited from the general population in five European countries. Of these participants, 2776 (70...
February 9, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29359025/cardiac-autonomic-neuropathy-risk-factors-diagnosis-and-treatment
#11
REVIEW
Victoria A Serhiyenko, Alexandr A Serhiyenko
Cardiac autonomic neuropathy (CAN) is a serious complication of diabetes mellitus (DM) that is strongly associated with approximately five-fold increased risk of cardiovascular mortality. CAN manifests in a spectrum of things, ranging from resting tachycardia and fixed heart rate (HR) to development of "silent" myocardial infarction. Clinical correlates or risk markers for CAN are age, DM duration, glycemic control, hypertension, and dyslipidemia (DLP), development of other microvascular complications...
January 15, 2018: World Journal of Diabetes
https://www.readbyqxmd.com/read/29314105/ambulatory-diagnostic-ecg-monitoring-for-syncope-and-collapse-an-assessment-of-clinical-practice-in-the-united-states
#12
David G Benditt, Wayne O Adkisson, Richard Sutton, Robin K Mears, Scott Sakaguchi
INTRODUCTION: Diagnostic ambulatory electrocardiogram (AECG) monitoring is widely used for evaluating syncope and collapse, and practice guidelines provide recommendations regarding optimal AECG device selection. However, whether physicians utilize AECGs in accordance with the pertinent guidelines is unclear. This study assessed utilization of AECG monitoring systems for syncope and collapse diagnosis by physicians in the United States. METHODS AND RESULTS: A quantitative survey was undertaken of physicians comprising multiple specialties (emergency department, n = 35; primary care, n = 35; hospitalists, n = 30; neurologists, n = 30; nonimplanting, n = 34, and implanting-cardiologists, n = 35)...
February 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29297193/advanced-and-traditional-electrocardiographic-risk-factors-in-pulmonary-arterial-hypertension-the-significance-of-ventricular-late-potentials
#13
Barbara Uznańska-Loch, Kamil Wikło, Ewa Trzos, Karina Wierzbowska-Drabik, Łukasz Chrzanowski, Jarosław D Kasprzak, Małgorzata Kurpesa
BACKGROUND: Whether non-invasive electrocardiographic parameters may be of similar relevance in pulmonary arterial hy-pertension (PAH) as in left ventricular heart failure (LVHF) remains unclear. AIM: To examine a profile of electrocardiographic parameters in PAH and to determine their prognostic significance. Com-parison of profile in patients with pulmonary hypertension secondary to left ventricular dysfunction was planned in order to put PAH group results into context...
2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29240772/monitoring-of-arrhythmia-and-sudden-death-in-a-hemodialysis-population-the-crash-ilr-study
#14
Paul R Roberts, Donah Zachariah, John M Morgan, Arthur M Yue, Elizabeth F Greenwood, Patrick C Phillips, Philip A Kalra, Darren Green, Robert J Lewis, Paul R Kalra
INTRODUCTION: It has been suggested that sudden cardiac death (SCD) contributes around 50% of cardiovascular and 27% of all-cause mortality in hemodialysis patients. The true burden of arrhythmias and arrhythmic deaths in this population, however, remains poorly characterised. Cardio Renal Arrhythmia Study in Hemodialysis (CRASH-ILR) is a prospective, implantable loop recorder single centre study of 30 established hemodialysis patients and one of the first to provide long-term ambulatory ECG monitoring...
2017: PloS One
https://www.readbyqxmd.com/read/29174021/sudden-cardiac-death-preceded-by-st-segment-elevations-during-ecg-patch-monitoring
#15
Timothy F Simpson, Nora Goldschlager
A 58-year-old male underwent ambulatory ECG monitoring with continuous patch monitoring (Zio XT Patch) for the complaint of episodic dyspnea. In the period of monitoring the patient suffered sudden cardiac death (SCD) with continuous ECG recording showing pronounced ST segment elevations followed by bradycardia and death. This report highlights the growing potential of continuous ST segment monitoring, and features the infrequent entity of ischemic electromechanical dissociation with bradyarrhythmia as a cause of SCD...
March 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29110996/atrial-ectopy-as-a-mediator-of-the-association-between-race-and-atrial-fibrillation
#16
Matthew A Christensen, Kaylin T Nguyen, Phyllis K Stein, Raymond B Fohtung, Elsayed Z Soliman, Thomas A Dewland, Eric Vittinghoff, Bruce M Psaty, Susan R Heckbert, Gregory M Marcus
BACKGROUND: Blacks have a lower risk of atrial fibrillation (AF) despite having more AF risk factors, but the mechanism remains unknown. Premature atrial contraction (PAC) burden is a recently identified risk factor for AF. OBJECTIVE: The purpose of this study was to determine whether the burden of PACs explains racial differences in AF risk. METHODS: PAC burden (number per hour) was assessed by 24-hour ambulatory electrocardiographic (ECG) monitoring in a randomly selected subset of patients in the Cardiovascular Health Study...
December 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29073767/arterial-stiffness-is-associated-with-qtc-interval-prolongation-in-patients-with-heart-failure
#17
Salah Al-Zaiti, Samir Saba, Rodolfo Pike, Jennifer Williams, Fadi Khraim
BACKGROUND: A prolonged corrected QT (QTc) interval is a known risk factor for adverse cardiac events. Understanding the determinants and physiologic correlates of QTc is necessary for selecting proper strategies to reduce the risk of adverse events in high-risk patients. We sought to evaluate the role of arterial stiffness in heart failure as a determinant of QTc prolongation. METHOD: This was an observational study that recruited ambulatory heart failure patients (New York Heart Association Classes I-II) from an outpatient heart failure clinic...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/29064614/accuracy-of-the-pacemaker-event-recorder-versus-holter-ecg-to-detect-both-symptomatic-and-asymptomatic-ventricular-arrhythmias
#18
Stela Maria Vitorino Sampaio, Neyle Moara Craveiro, Francisco Darrieux, Ítalo Martins de Oliveira, Mauricio Scanavacca, Denise Hachul
BACKGROUND: Although new pacemakers can register cardiac rhythm, few studies were performed evaluating their accuracy in diagnosing ventricular arrhythmias (VA). This study aimed to assess the correlation and agreement between the pacemaker's monitor and the ambulatory Holter in detecting VA. METHODS AND RESULTS: We studied 129 patients with pacemakers, mean age 68.6 ± 19.1 years, 54.8% female. Once Holter monitoring was connected, the pacemakers' event counters were reset and clocks of both systems were synchronized to register electrocardiograms (ECG) simultaneously...
January 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29060518/significance-of-modified-empirical-mode-decomposition-for-ecg-denoising
#19
Pratik Singh, S Shahnawazuddin, Gayadhar Pradhan
The primary objective of the presented work is to exploit the power of modified empirical mode decomposition (M-EMD) for the denoising of ECG signals. It is well known that the ECG signals get corrupted by a number of noises during the recording process. Especially, during wireless ECG recording and ambulatory patient monitoring, the signal gets corrupted by additive white Gaussian noise (AWGN). Over the years, several techniques have been proposed for ECG denoising. Among those, empirical mode decomposition (EMD) and nonlocal means (NLM) algorithm are noted to be quite effective...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060300/exploration-and-validation-of-alternate-sensing-methods-for-wearable-continuous-pulse-transit-time-measurement-using-optical-and-bioimpedance-modalities
#20
Bassem Ibrahim, Viswam Nathan, Roozbeh Jafari
In this work we explore the viability of a multimodal sensing device that can be integrated in a wearable form factor for daily, non-invasive ambulatory blood pressure (BP) monitoring. A common approach in previous research has been to rely on measuring the pulse transit time (PTT), which has been shown to be correlated with the BP. In this work, we look into the feasibility of measuring PTT using sensors separated by a small distance on one arm so that any eventual realization of the system is convenient to wear and use over long periods of time...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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