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Exercise electrocardiography

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https://www.readbyqxmd.com/read/29468917/the-acute-effects-of-aerobic-exercise-on-cognitive-flexibility-and-task-related-heart-rate-variability-in-children-with-adhd-and-healthy-controls
#1
Sebastian Ludyga, Markus Gerber, Manuel Mücke, Serge Brand, Peter Weber, Mark Brotzmann, Uwe Pühse
OBJECTIVE: To investigate cognitive flexibility and task-related heart rate variability following moderately intense aerobic exercise and after watching a video in both children with ADHD and healthy controls. METHOD: Using a cross-over design, participants completed cognitive assessments following exercise and a physically inactive control condition. Behavioral performance was assessed using the Alternate Uses task. Heart rate variability was recorded via electrocardiography during the cognitive task...
February 1, 2018: Journal of Attention Disorders
https://www.readbyqxmd.com/read/29453408/biosignals-reflect-pair-dynamics-in-collaborative-work-eda-and-ecg-study-of-pair-programming-in-a-classroom-environment
#2
Lauri Ahonen, Benjamin Ultan Cowley, Arto Hellas, Kai Puolamäki
Collaboration is a complex phenomenon, where intersubjective dynamics can greatly affect the productive outcome. Evaluation of collaboration is thus of great interest, and can potentially help achieve better outcomes and performance. However, quantitative measurement of collaboration is difficult, because much of the interaction occurs in the intersubjective space between collaborators. Manual observation and/or self-reports are subjective, laborious, and have a poor temporal resolution. The problem is compounded in natural settings where task-activity and response-compliance cannot be controlled...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29431371/palpitations-evaluation-in-the-primary-care-setting
#3
Randell K Wexler, Adam Pleister, Subha V Raman
Palpitations are a common problem in the ambulatory primary care setting, and cardiac causes are the most concerning etiology. Psychiatric illness, adverse effects of prescription and over-the-counter medications, and substance use should also be considered. Distinguishing cardiac from noncardiac causes is important because of the risk of sudden death in those with an underlying cardiac etiology. A thorough history and physical examination, followed by targeted diagnostic testing, can distinguish cardiac conditions from other causes of palpitations...
December 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/29359025/cardiac-autonomic-neuropathy-risk-factors-diagnosis-and-treatment
#4
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/29351473/sympathetically-mediated-cardiac-responses-to-isolated-muscle-metaboreflex-activation-following-exercise-are-modulated-by-body-position-in-humans
#5
André L Teixeira, Mauricio Daher, Mayara Souza, Plinio Santos Ramos, James P Fisher, Lauro C Vianna
Isolated muscle metaboreflex activation with post-handgrip exercise ischemia (PEI) increases sympathetic nerve activity and partially maintains the exercise-induced increase in blood pressure, but a smaller heart rate (HR) response occurs. The cardiopulmonary baroreceptors, mechanically sensitive receptors that respond to changes in central blood volume and pressure, are strongly associated with changes in body position and upon activation elicit reflex sympathoinhibition. Here, we tested the hypothesis that postural changes modulate the sympathetically-mediated cardiac response to PEI in humans...
December 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351468/gabaergic-contribution-to-the-muscle-mechanoreflex-mediated-heart-rate-responses-at-the-onset-of-exercise-in-humans
#6
André L Teixeira, Plinio Santos Ramos, Milena Samora, Jeann L Sabino-Carvalho, Djalma Rabelo Ricardo, Eduardo Colombari, Lauro C Vianna
Previous studies indicated that central GABAergic mechanisms are involved in the heart rate (HR) responses at the onset of exercise. Based on previous research that showed similar increases in HR during passive and active cycling, we reasoned that the GABAergic mechanisms involved in the HR responses at the exercise onset is primarily mediated by muscle mechanoreceptors afferents. Therefore, in this study we sought to determine if central GABA mechanisms are involved in the muscle mechanoreflex-mediated HR responses at the onset of exercise in humans...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29248657/comprehensive-cardiac-ct-with-myocardial-perfusion-imaging-versus-functional-testing-in-suspected-coronary-artery-disease-the-multicenter-randomized-crescent-ii-trial
#7
Marisa Lubbers, Adriaan Coenen, Marcel Kofflard, Tobias Bruning, Bas Kietselaer, Tjebbe Galema, Marc Kock, Andre Niezen, Marco Das, Marco van Gent, Ewout-Jan van den Bos, Leon van Woerkens, Paul Musters, Suze Kooij, Fay Nous, Ricardo Budde, Miriam Hunink, Koen Nieman
OBJECTIVES: This study sought to assess the effectiveness, efficiency, and safety of a tiered, comprehensive cardiac computed tomography (CT) protocol in comparison with functional testing. BACKGROUND: Although CT angiography accurately rules out coronary artery disease (CAD), incorporation of CT myocardial perfusion imaging as part of a tiered diagnostic approach could improve the clinical value and efficiency of cardiac CT in the diagnostic work-up of patients with angina pectoris...
December 8, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29238122/right-ventricular-function-in-patients-with-heart-failure-in-a-cardiac-clinic-in-southwest-nigeria
#8
Adeseye A Akintunde
Background: Right ventricular (RV) function is an important entity in heart failure. Patients with RV dysfunction (RVD) have poorer prognosis and exercise tolerance than those with preserved RV systolic function. Tricuspid annular plane systolic excursion (TAPSE) has been proposed as a simple and reproducible parameter for the qualitative assessment of RV systolic function/ejection fraction (EF). This study aims at describing RV function/RVD among heart failure patients in a specialized cardiac facility in Southwestern Nigeria...
January 2017: Nigerian Medical Journal: Journal of the Nigeria Medical Association
https://www.readbyqxmd.com/read/29187205/combined-double-chambered-right-ventricle-tricuspid-valve-dysplasia-ventricular-septal-defect-and-subaortic-stenosis-in-a-dog
#9
Iuliu Scurtu, Flaviu Tabaran, Mircea Mircean, Gavril Giurgiu, Andras Nagy, Cornel Catoi, Dan G Ohad
BACKGROUND: Double chambered right ventricle (DCRV) is a congenital heart anomaly where the right ventricle is divided into two chambers. We describe, for the first time, an unusual combination of DCRV combined with some other congenital heart defects. CASE PRESENTATION: A 1.2-year-old Golden Retriever was presented with lethargy, exercise intolerance and ascites. Physical examination revealed an irregularly irregular pulse and a grade V/VI, systolic, right cranial murmur...
November 29, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29184167/effect-of-nebivolol-or-atenolol-vs-placebo-on-cardiovascular-health-in-subjects-with-borderline-blood-pressure-the-evidence-study
#10
Daniel A Duprez, Natalia Florea, Sue Duval, Catherine Koukol, Jay N Cohn
Pharmacotherapy to protect the arteries may be appropriate for individuals with high-normal blood pressure who are at risk for future cardiovascular disease (CVD). Nebivolol (NEB) in contrast to atenolol (ATE) may have a beneficial effect on endothelial function and may be more effective than ATE in preventing CVD. Sixty subjects with preHTN or borderline BP and abnormal small artery elasticity (SAE) underwent evaluation with 10 tests, including large and small artery elasticity, resting and treadmill exercise BP, carotid intimal-media thickness, retinal vascular photography, micro-albuminuria, electrocardiography, echocardiography, and plasma B-type natriuretic peptide level...
November 28, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/29183415/the-pre-participation-screening-in-young-athletes-which-protocol-do-we-need-exactly
#11
İbrahim I Çetin, Filiz Ekici, Ayşe E Kibar, Murat Sürücü, Ali Orgun
The aim was to assess the utility and feasibility of a comprehensive cardiac screening protocol in young athletes before participation in sports. A total of 380 athletes referring before participation in sports, between April, 2014 and April, 2015, were included in this study. The mean age was 12.4 years. A screening protocol has been applied to all, including personal and family history, physical examination, 12-lead electrocardiography, transthoracic echocardiography, 24-hour rhythm Holter analysis, and treadmill exercise test...
November 29, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/29161419/incidence-of-postoperative-atrial-fibrillation-recurrence-in-patients-discharged-in-sinus-rhythm-after-cardiac-surgery-a-systematic-review-and-meta-analysis
#12
Nicole Lowres, Georgina Mulcahy, Kai Jin, Robyn Gallagher, Lis Neubeck, Ben Freedman
Postoperative atrial fibrillation (POAF) is associated with increased stroke risk and mortality post-discharge. POAF is often considered transient; however, recurrence is likely under-recognized as symptoms are an unreliable guide. Surveillance post-discharge may identify asymptomatic POAF recurrences in patients discharged in sinus rhythm. Therefore, we performed a systematic review and meta-analysis of studies investigating POAF recurrence post-discharge, in patients with new-onset POAF following cardiac surgery who reverted to sinus rhythm prior to discharge...
November 17, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29135658/muscle-strength-influences-pressor-responses-to-static-handgrip-in-men-and-women
#13
Karambir Notay, Jordan B Lee, Anthony V Incognito, Jeremy D Seed, Adam A Arthurs, Philip J Millar
PURPOSE: Whether differences in absolute muscle strength impact blood pressure (BP) responses to relative intensity static exercise remains controversial but could contribute to known sex-based differences and influence the interpretation of cross-sectional data. METHODS: One hundred thirty-two healthy participants (66 men and 66 women, age: 22±3yrs) underwent continuous seated measurements of BP (Finometer) and heart rate (electrocardiography) during baseline rest and two minutes of static handgrip (30% maximal voluntary contraction [MVC])...
November 10, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29072176/premature-coronary-artery-disease-due-to-homozygous-familial-hypercholesterolemia-in-a-12-year-old-girl
#14
Filiz Ekici, Salih Özçobanoğlu, Fırat Kardelen
BACKGROUND: Homozygous familial hypercholesterolemia (HoFH) is a rare inherited metabolic disease, caused by low-density lipoprotein receptor abnormality. Patients with HoFH have an increased risk for cardiovascular complication (CVC) that usually occurs in the first decade of life. We report a twelve years-old girl with unpredicted presentation for coronary artery disease (CAD) and she was found to have HoFH. CASE REPORT: A 12 years old girl was admitted to our unit with syncope...
October 26, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29069369/high-resolution-three-dimensional-late-gadolinium-enhanced-cardiac-magnetic-resonance-imaging-to-identify-the-underlying-substrate-of-ventricular-arrhythmia
#15
Alexia Hennig, Marjorie Salel, Frederic Sacher, Claudia Camaioni, Soumaya Sridi, Arnaud Denis, Michel Montaudon, François Laurent, Pierre Jais, Hubert Cochet
Aims: Cardiac magnetic resonance (CMR) is recommended as a second-line method to diagnose ventricular arrhythmia (VA) substrate. We assessed the diagnostic yield of CMR including high-resolution late gadolinium-enhanced (LGE) imaging. Methods and results: Consecutive patients with sustained ventricular tachycardia (VT), non-sustained VT (NSVT), or ventricular fibrillation/aborted sudden death (VF/SCD) underwent a non-CMR diagnostic workup according to current guidelines, and CMR including LGE imaging with both a conventional breath-held and a free-breathing method enabling higher spatial resolution (HR-LGE)...
October 23, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29059981/towards-precise-tracking-of-electric-mechanical-cardiac-time-intervals-through-joint-ecg-and-bcg-sensing-and-signal-processing
#16
Haihong Zhang, Zimin Wang, Kejun Dong, Soon Huat Ng, Zhiping Lin
Automatic tracking of intra-beat cardiac activities in ballistocardiogram (BCG) is a highly interesting yet technically challenging topic for cardiac monitoring, due to the signal's high susceptibility to various forms of distortions. In this paper, we aim to further investigate the BCG waveform detection from a signal processing and analysis viewpoint. We collect synchronized electrocardiography(ECG) and BCG recordings from four healthy human subjects using an in-house built multi-physiological monitoring device...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29045952/-progress-in-diagnosis-and-management-of-syncope-in-children
#17
W R Xu, Y Liao, H F Jin, Q Y Zhang, C S Tang, J B DU
Syncope is a common emergency of children and adolescents, which has serious influence on the quality of life. Neurally-mediated syncope, including postural tachycardia syndrome, vasovagal syncope, orthostatic hypotension and orthostatic hypertension, is the main cause of syncope in children and adolescents. The main manifestations of neurally-mediated syncope are diverse, such as dizziness, headache, chest tightness, chest pain, pale complexion, fatigue, pre-syncope and syncope. Although the clinical manifestations are similar, each subtype of syncope has its hemodynamic feature and optimal treatment option...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28940877/fragmented-qrs-complex-as-a-predictor-of-exercise-related-sudden-cardiac-death
#18
Tomi Toukola, M Juhani Junttila, Lauri T A Holmström, M Anette Haukilahti, Jani T Tikkanen, Henri Terho, Tuomas V Kenttä, Aapo L Aro, Olli Anttonen, Tuomas Kerola, Lasse Pakanen, Marja-Leena Kortelainen, Antti Kiviniemi, Heikki V Huikuri
INTRODUCTION: Little is known about the association between electrocardiographic abnormalities and exercise-related sudden cardiac death. Therefore, our aim was to identify possible electrocardiographic findings related to exercise-induced sudden cardiac death. METHODS AND RESULTS: The FinGesture study includes 3,989 consecutive sudden cardiac deaths in northern Finland between 1998 and 2012, out of whom a total of 647 subjects had a previously recorded electrocardiography acquired from the archives of Oulu University Hospital...
September 20, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28928046/new-directions-for-ambulatory-monitoring-following-2017-hrs-ishne-expert-consensus
#19
Emanuela T Locati
The main role of ambulatory electrocardiography (AECG) in clinical practice is to detect and characterize the behavior of cardiac electrical activity during ordinary daily life activities. Because certain rhythm abnormalities may be infrequent and paroxysmal, and may occur only during sleep or in association with mental, emotional, or exercise-induced perturbation in cardiac function, AECG needs to be recorded over a long period of time, originally lasting 24h and now expanding up to several weeks and even to months...
August 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28814168/deterioration-of-heart-rate-recovery-index-in-patients-after-carotid-artery-stenting
#20
Emrah Aytac, Murat Gonen, Orhan Dogdu, Mehmet Balin
Objective Although carotid artery stenting (CAS) is an effective treatment for severe carotid stenosis, it has been associated with alterations in autonomic functions long term after the procedure. Patients with CAS have been reported to have autonomic nervous system (ANS) dysfunction. This study aimed to evaluate heart rate recovery (HRR) indices and exercise test parameters after CAS. Methods Patients (10 male, 11 female) suitable for CAS, without a history of hypertension, diabetes mellitus, severe coronary artery or valvular heart disease, were enrolled in our study...
December 2017: Interventional Neuroradiology
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