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https://www.readbyqxmd.com/read/29678964/technology-enabled-examinations-of-cardiac-rhythm-optic-nerve-oral-health-tympanic-membrane-gait-and-coordination-evaluated-jointly-with-routine-health-screenings-an-observational-study-at-the-2015-kumbh-mela-in-india
#1
Pratik Shah, Gregory Yauney, Otkrist Gupta, Vincent Patalano Ii, Mrinal Mohit, Rikin Merchant, S V Subramanian
OBJECTIVES: Technology-enabled non-invasive diagnostic screening (TES) using smartphones and other point-of-care medical devices was evaluated in conjunction with conventional routine health screenings for the primary care screening of patients. DESIGN: Dental conditions, cardiac ECG arrhythmias, tympanic membrane disorders, blood oxygenation levels, optic nerve disorders and neurological fitness were evaluated using FDA-approved advanced smartphone powered technologies...
April 20, 2018: BMJ Open
https://www.readbyqxmd.com/read/29673171/litenet-lightweight-neural-network-for-detecting-arrhythmias-at-resource-constrained-mobile-devices
#2
Ziyang He, Xiaoqing Zhang, Yangjie Cao, Zhi Liu, Bo Zhang, Xiaoyan Wang
By running applications and services closer to the user, edge processing provides many advantages, such as short response time and reduced network traffic. Deep-learning based algorithms provide significantly better performances than traditional algorithms in many fields but demand more resources, such as higher computational power and more memory. Hence, designing deep learning algorithms that are more suitable for resource-constrained mobile devices is vital. In this paper, we build a lightweight neural network, termed LiteNet which uses a deep learning algorithm design to diagnose arrhythmias, as an example to show how we design deep learning schemes for resource-constrained mobile devices...
April 17, 2018: Sensors
https://www.readbyqxmd.com/read/29668674/the-influences-of-the-m2r-girk4-rgs6-dependent-parasympathetic-pathway-on-electrophysiological-properties-of-the-mouse-heart
#3
Kanchan Kulkarni, Xueyi Xie, Ezequiel Marron Fernandez de Velasco, Allison Anderson, Kirill A Martemyanov, Kevin Wickman, Elena G Tolkacheva
A large body of work has established the prominent roles of the atrial M2R-IKACh signaling pathway, and the negative regulatory protein RGS6, in modulating critical aspects of parasympathetic influence on cardiac function, including pace-making, heart rate (HR) variability (HRV), and atrial arrhythmogenesis. Despite increasing evidence of its innervation of the ventricles, and the expression of M2R, IKACh channel subunits, and RGS6 in ventricle, the effects of parasympathetic modulation on ventricular electrophysiology are less clear...
2018: PloS One
https://www.readbyqxmd.com/read/29663941/using-the-oculocardiac-reflex-to-characterize-autonomic-imbalance-in-a-naturally-occurring-canine-model-of-valvular-insufficiency
#4
Bruna C Brüler, Thayane C Vieira, Marcela Wolf, Stephany B Lucina, Fabiano Montiani-Ferreira, Marlos G Sousa
Congestive heart failure (CHF) is characterized by reduced heart rate variability. Although various methods to achieve parasympathetic withdrawal and sympathetic activation have been documented, stimulation of the vagal nerve (that is, vagal maneuvers) has not often been used to assess the autonomic impairment associated with disease progression in veterinary species. In this study, we investigated cardiac autonomic control in a naturally occurring canine model of mitral insufficiency by means of individual responses to oculocardiac reflex...
April 2, 2018: Comparative Medicine
https://www.readbyqxmd.com/read/29650310/electronic-health-record-with-computerized-decision-support-tools-for-the-purposes-of-a-pediatric-cardiovascular-heart-disease-screening-program-in-crete
#5
Ilias Chatzakis, Kostas Vassilakis, Christos Lionis, Ioannis Germanakis
BACKGROUND AND OBJECTIVE: Early detection of cardiovascular (CV) disease or associated risk factors during childhood is of paramount importance, allowing for early treatment or lifestyle modifications, respectively. The objective of this study was to describe the development of an electronic health record (EHR), with integrated computerized decision support system (CDSS), specifically designed for supporting the needs of a pilot pediatric CV disease screening program applied on primary school students of a Mediterranean island...
June 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29628021/regulation-by-3-5-3-tri-iodothyronine-and-fsh-of-cytochrome-p450-family-19-cyp19-expression-in-mouse-granulosa-cells
#6
Juan Liu, Yingying Han, Ye Tian, Xuechun Weng, Xusong Hu, Wenbo Liu, Dai Heng, Kaili Xu, Yanzhou Yang, Cheng Zhang
Cytochrome P450 family 19 (CYP19) plays an important role in follicular development, which is regulated by FSH. Although 3,5,3'-tri-iodothyronine (T3) combines with FSH to induce preantral follicle growth and granulosa cell development, the mechanism involved remains unclear. The aim of the present study was to determine the cellular and molecular mechanisms by which thyroid hormone (TH) and FSH regulate CYP19 expression and sterol biosynthesis during preantral follicle growth. Mice were injected subcutaneously (s...
April 9, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29627347/trpa1-mediates-the-cardiac-effects-of-acrolein-through-parasympathetic-dominance-but-also-sympathetic-modulation-in-mice
#7
Nicole Kurhanewicz, Allen Ledbetter, Aimen Farraj, Mehdi Hazari
Numerous studies have demonstrated that short-term air pollution exposure causes cardiac autonomic imbalance as measured by heart rate variability (HRV). We previously showed that a single exposure to acrolein, a ubiquitous gaseous component of air pollution, not only causes autonomic imbalance, but also increases arrhythmia through transient receptor potential A1 (TRPA1) cation channels. Thus, the goal of this study was to characterize acrolein-induced autonomic changes in both normal and TRPA1-knockout mice (KO)...
April 5, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29627227/effects-of-moxifloxacin-on-the-proarrhythmic-surrogate-markers-in-healthy-filipino-subjects-exposure-response-modeling-using-ecg-data-of-thorough-qt-qtc-study
#8
Suchitra Matsukura, Yuji Nakamura, Kiyotaka Hoshiai, Takashi Hayashi, Tadashi Koga, Ai Goto, Koki Chiba, Nur Jaharat Lubna, Mihoko Hagiwara-Nagasawa, Hiroko Izumi-Nakaseko, Kentaro Ando, Atsuhiko T Naito, Atsushi Sugiyama
Effects of moxifloxacin on QTc as well as proarrhythmic surrogate markers including J-Tpeak c, Tpeak -Tend and short-term variability (STV) of repolarization were examined by using both standard E14 time-based evaluation and exposure-response modeling. The study was conducted with a single-blind, randomized, single-dose, placebo-controlled and two-period cross-over design in healthy Filipino subjects. QT interval was corrected by Fridericia's formula (QTcF). In the E14 time-based evaluation of ECG data, the largest ΔΔQTcF with 90% confidence interval was 14...
March 27, 2018: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29622589/genome-wide-associations-of-global-electrical-heterogeneity-ecg-phenotype-the-aric-atherosclerosis-risk-in-communities-study-and-chs-cardiovascular-health-study
#9
Larisa G Tereshchenko, Nona Sotoodehnia, Colleen M Sitlani, Foram N Ashar, Muammar Kabir, Mary L Biggs, Michael P Morley, Jonathan W Waks, Elsayed Z Soliman, Alfred E Buxton, Tor Biering-Sørensen, Scott D Solomon, Wendy S Post, Thomas P Cappola, David S Siscovick, Dan E Arking
BACKGROUND: ECG global electrical heterogeneity (GEH) is associated with sudden cardiac death. We hypothesized that a genome-wide association study would identify genetic loci related to GEH. METHODS AND RESULTS: We tested genotyped and imputed variants in black (N=3057) and white (N=10 769) participants in the ARIC (Atherosclerosis Risk in Communities) study and CHS (Cardiovascular Health Study). GEH (QRS-T angle, sum absolute QRST integral, spatial ventricular gradient magnitude, elevation, azimuth) was measured on 12-lead ECGs...
April 5, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29622458/usefulness-of-a-clinical-risk-score-to-predict-the-response-to-cardiac-resynchronization-therapy
#10
Rui Providencia, Eloi Marijon, Sergio Barra, Christian Reitan, Alexander Breitenstein, Pascal Defaye, Nikolaos Papageorgiou, Rudolph Duehmke, Stephan Winnik, Richard Ang, Didier Klug, Daniel Gras, Tardu Oezkartal, Oliver R Segal, Jean-Claude Deharo, Christophe Leclercq, Pier D Lambiase, Laurent Fauchier, Pierre Bordachar, Jan Steffel, Nicolas Sadoul, Olivier Piot, Rasmus Borgquist, Sharad Agarwal, Anthony Chow, Serge Boveda
BACKGROUND: Almost 1/3 of heart failure patients fail to respond to cardiac resynchronization therapy (CRT). A simple clinical score to predict who these patients are at the moment of referral or at time of implant may be of importance for early optimization of their management. METHODS: Observational study. A risk score was derived from factors associated to CRT response. The derivation cohort was composed of 1301 patients implanted with a CRT defibrillator in a multi-center French cohort-study...
June 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29609921/a-comparison-of-the-cardiovascular-effects-of-simulated-and-spontaneous-laughter
#11
Mikaela M Law, Elizabeth A Broadbent, John J Sollers
OBJECTIVES: Laughter has long been regarded as beneficial for health, but the mechanisms are not clearly understood. The current study aimed to compare the acute cardiovascular effects of spontaneous and simulated laughter. DESIGN: A mixed factorial experiment was performed to examine changes in cardiovascular variables in response to experimental tasks across conditions. INTERVENTIONS: A sample of 72 participants were randomised to one of three 6 min interventions...
April 2018: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/29587995/response-to-ecg-march-2018
#12
Marc Figueras-Coll, Nuria Rivas-Gándara, Ferran Rosés-Noguer
No abstract text is available yet for this article.
April 2018: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29569983/the-development-of-a-novel-high-precision-major-depressive-disorder-screening-system-using-transient-autonomic-responses-induced-by-dual-mental-tasks
#13
Takemi Matsui, Toshikazu Shinba, Guanghao Sun
12.6% of major depressive disorder (MDD) patients have suicide intent, while it has been reported that 43% of patients did not consult their doctors for MDD, automated MDD screening is eagerly anticipated. Recently, in order to achieve automated screening of MDD, biomarkers such as multiplex DNA methylation profiles or physiological method using near infra-red spectroscopy (NIRS) have been studied, however, they require inspection using 96-well DNA ELIZA kit after blood sampling or significant cost. Using a single-lead electrocardiography (ECG), we developed a high-precision MDD screening system using transient autonomic responses induced by dual mental tasks...
March 23, 2018: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29550833/a-case-of-lown-ganong-levine-syndrome-due-to-an-accessory-pathway-of-james-fibers-or-enhanced-atrioventricular-nodal-conduction-eavnc
#14
Juanita Hunter, Emmanouil Tsounias, John Cogan, Ming-Lon Young
BACKGROUND Lown-Ganong-Levine syndrome, includes a short PR interval, normal QRS complex, and paroxysmal tachycardia. The pathophysiology of this syndrome includes an accessory pathway connecting the atria and the atrioventricular (AV) node (James fiber), or between the atria and the His bundle (Brechenmacher fiber). Similar features are seen in enhanced atrioventricular nodal conduction (EAVNC), with the underlying pathophysiology due to a fast pathway to the AV node, and with the diagnosis requiring specific electrophysiologic criteria...
March 18, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29548521/the-utility-of-the-triage-electrocardiogram-for-the-detection-of-st-segment-elevation-myocardial-infarction
#15
Samantha Noll, Heidi Alvey, Namita Jayaprakash, Aniruddha Paranjpe, Joseph Miller, Michele L Moyer, Richard Nowak
INTRODUCTION: Current AHA/ACC guidelines on the management of ST-elevation myocardial infarction (STEMI) suggest that an ECG is indicated within 10minutes of arrival for patients arriving to the Emergency Department (ED) with symptoms concerning for STEMI. In response, there has been a creep towards performing ECGs more frequently in triage. The objectives of this study were to quantify the number of triage ECGs performed at our institution, assess the proportion of ECGs performed within current hospital guidelines, and evaluate the rate of STEMI detection in triage ECGs...
February 3, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29540372/atrial-infarction-induced-spontaneous-focal-discharges-and-atrial-fibrillation-in-sheep-role-of-dantrolene-sensitive-aberrant-ryanodine-receptor-calcium-release
#16
Uma Mahesh R Avula, Jonathan J Hernandez, Masatoshi Yamazaki, Carmen R Valdivia, Antony Chu, Alvaro Rojas-Pena, Kuljeet Kaur, Roberto Ramos-Mondragón, Justus M Anumonwo, Stanley Nattel, Héctor H Valdivia, Jérôme Kalifa
BACKGROUND: The mechanisms underlying spontaneous atrial fibrillation (AF) associated with atrial ischemia/infarction are incompletely elucidated. Here, we investigate the mechanisms underlying spontaneous AF in an ovine model of left atrial myocardial infarction (LAMI). METHODS AND RESULTS: LAMI was created by ligating the atrial branch of the left anterior descending coronary artery. ECG loop recorders were implanted to monitor AF episodes. In 7 sheep, dantrolene-a ryanodine receptor blocker-was administered in vivo during the 8-day observation period (LAMI-D, 2...
March 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29533990/comparison-between-electrocardiographic-and-earlobe-pulse-photoplethysmographic-detection-for-evaluating-heart-rate-variability-in-healthy-subjects-in-short-and-long-term-recordings
#17
Basilio Vescio, Maria Salsone, Antonio Gambardella, Aldo Quattrone
Heart rate variability (HRV) is commonly used to assess autonomic functions and responses to environmental stimuli. It is usually derived from electrocardiographic signals; however, in the last few years, photoplethysmography has been successfully used to evaluate beat-to-beat time intervals and to assess changes in the human heart rate under several conditions. The present work describes a simple design of a photoplethysmograph, using a wearable earlobe sensor. Beat-to-beat time intervals were evaluated as the time between subsequent pulses, thus generating a signal representative of heart rate variability, which was compared to RR intervals from classic electrocardiography...
March 13, 2018: Sensors
https://www.readbyqxmd.com/read/29531592/electrocardiographic-parameters-as-predictors-of-response-to-cardiac-resynchronization-therapy
#18
Lidija Poposka, Vladimir Boskov, Dejan Risteski, Jane Taleski, Filip Janusevski, Elizabeta Srbinovska, Ljubica Georgievska-Ismail
INTRODUCTION: Although strict selection criteria are used to select patients for cardiac resynchronisation therapy, up to 30% of patients do not have a positive clinical response. PATIENTS: A total of 102 consecutive patients who had biventricular pacemaker/defibrillator (CRT-P or CRT-D) implanted were enrolled in this prospective observational study. RESULTS: During the average follow-up period of 24.3 months 5 patients died and 17 (16.7%) patients were hospitalised with the symptoms of heart failure; 75 (73...
February 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29531576/quantitative-assessment-of-the-physiological-parameters-influencing-qt-interval-response-to-medication-application-of-computational-intelligence-tools
#19
Sebastian Polak, Barbara Wiśniowska, Aleksander Mendyk, Adam Pacławski, Jakub Szlęk
Human heart electrophysiology is complex biological phenomenon, which is indirectly assessed by the measured ECG signal. ECG trace is further analyzed to derive interpretable surrogates including QT interval, QRS complex, PR interval, and T wave morphology. QT interval and its modification are the most commonly used surrogates of the drug triggered arrhythmia, but it is known that the QT interval itself is determined by other nondrug related parameters, physiological and pathological. In the current study, we used the computational intelligence algorithms to analyze correlations between various simulated physiological parameters and QT interval...
2018: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/29524917/efficacy-of-a-tool-to-predict-short-term-mortality-in-older-people-presenting-at-emergency-departments-protocol-for-a-multi-centre-cohort-study
#20
Magnolia Cardona, Ebony T Lewis, Robin M Turner, Hatem Alkhouri, Stephen Asha, John Mackenzie, Margaret Perkins, Sam Suri, Anna Holdgate, Luis Winoto, Chan-Wei Chang, Blanca Gallego-Luxan, Sally McCarthy, Mette R Kristensen, Michael O'Sullivan, Helene Skjøt-Arkil, Anette A Ekmann, Hanne H Nygaard, Jonas J Jensen, Rune O Jensen, Jonas L Pedersen, Dorothy Breen, John A Petersen, Birgitte N Jensen, Christian Backer Mogensen, Ken Hillman, Mikkel Brabrand
BACKGROUND: Prognostic uncertainty inhibits clinicians from initiating timely end-of-life discussions and advance care planning. This study evaluates the efficacy of the CriSTAL (Criteria for Screening and Triaging to Appropriate aLternative care) checklist in emergency departments. METHODS: Prospective cohort study of patients aged ≥65 years with any diagnosis admitted via emergency departments in ten hospitals in Australia, Denmark and Ireland. Electronic and paper clinical records will be used to extract risk factors such as nursing home residency, physiological deterioration warranting a rapid response call, personal history of active chronic disease, history of hospitalisations or intensive care unit admission in the past year, evidence of proteinuria or ECG abnormalities, and evidence of frailty to be concurrently measured with Fried Score and Clinical Frailty Scale...
March 6, 2018: Archives of Gerontology and Geriatrics
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