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https://www.readbyqxmd.com/read/28227932/influence-of-embedding-dimension-on-distribution-entropy-in-analyzing-heart-rate-variability
#1
Radhagayathri K Udhayakumar, Chandan Karmakar, Peng Li, Marimuthu Palaniswami, Radhagayathri K Udhayakumar, Chandan Karmakar, Peng Li, Marimuthu Palaniswami, Marimuthu Palaniswami, Radhagayathri K Udhayakumar, Peng Li, Chandan Karmakar
Distribution entropy (DistEn) is a recent measure of complexity that is used to analyze Heart Rate Variability (HRV) data. DistEn which is a function of data length N, number of bins M and embedding dimension m is known to be stable and consistent with respect to parameters N and M respectively. Also, (N, M) are known to have a combined effect in deciding performance of DistEn as a classification feature. But, all such analysis have mostly ignored the influence of the third parameter m on DistEn properties...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227931/long-range-correlations-in-amplitude-variability-of-hf-and-lf-components-of-heart-rate-variability
#2
Yuki Miki, Yasuyuki Suzuki, Eiichi Watanabe, Junichiro Hayano, Yoshiharu Yamamoto, Taishin Nomura, Ken Kiyono, Yuki Miki, Yasuyuki Suzuki, Eiichi Watanabe, Junichiro Hayano, Yoshiharu Yamamoto, Taishin Nomura, Ken Kiyono
For the assessment of autonomic nervous system activity based on heart rate variability (HRV) analysis, characteristics of high-frequency (HF; 0.15 to 0.4 Hz) and low-frequency (LF; 0.04 to 0.15 Hz) components have been widely employed. HF and LF band powers quantified by power spectral analysis have most commonly been used in the conventional studies; the physiological significance of these measures has also been extensively studied. However, nonlinear characteristics of HF and LF components have not been well established...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226433/preliminary-results-of-residual-deficits-observed-in-athletes-with-concussion-history-combined-eeg-and-cognitive-study
#3
Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai, Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai, Reza Fazel-Rezai, Jeffrey L Gendreau, Benjamin D Johnson, Tamanna T K Munia, Ajay K Verma, Kouhyar Tavakolian, Mark Romanick
Assessment, treatment, and management of sport-related concussions are a widely recognized public health issue. Although several neuropsychological and motor assessment tools have been developed and implemented for sports teams at various levels and ages, the sensitivity of these tests has yet to be validated with more objective measures to make return-to-play (RTP) decisions more confidently. The present study sought to analyze the residual effect of concussions on a sample of adolescent athletes who sustained one or more previous concussions compared to those who had no concussion history...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226431/virtual-reality-applications-in-assessing-the-effect-of-anxiety-on-sensorimotor-integration-in-human-postural-control
#4
Christopher Widdowson, Jatin Ganhotra, Mohammed Faizal, Marissa Wilko, Saurin Parikh, Zainulabidin Adhami, Manuel E Hernandez, Christopher Widdowson, Jatin Ganhotra, Mohammed Faizal, Marissa Wilko, Saurin Parikh, Zainulabidin Adhami, Manuel E Hernandez, Marissa Wilko, Zainulabidin Adhami, Manuel E Hernandez, Saurin Parikh, Mohammed Faizal, Jatin Ganhotra, Christopher Widdowson
Falls are a leading cause of injury and mortality among adults over the age of 65 years. Given the strong relation between fear of falling and fall risk, identification of the mechanisms that underlie anxiety-related changes in postural control may pave the way to the development of novel therapeutic strategies aimed at reducing fall risk in older adults. First, we review potential mechanisms underlying anxiety-mediated changes in postural control in older adults with and without neurological conditions. We then present a system that allows for the simultaneous recording of neural, physiological, and behavioral data in an immersive virtual reality (VR) environment while implementing sensory and mechanical perturbations to evaluate alterations in sensorimotor integration under conditions with high postural threat...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225422/clinical-updates-in-women-s-health-care-summary-structural-heart-disease-primary-and-preventive-care-review
#5
Tiberio Frisoli, Michele Doughty Voeltz
Reproductive-aged women with structural heart disease who become pregnant as well as postreproductive-aged women with this condition represent a significant proportion of patients seen by obstetrician- gynecologists. Usually, their conditions are complex, and a basic knowledge of the anatomy and physiology of the heart is required. Additionally, understanding the effect of pregnancy on women with structural heart disease is critically important to optimizing maternal and fetal outcomes. This monograph addresses the pathophysiology, signs and symptoms, screening and diagnosis, basic management, and suggested counseling for an obstetric-gynecologic patient with structural heart disease...
March 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28224678/microbiome-autoimmunity-allergy-and-helminth-infection-the-importance-of-the-pregnancy-period
#6
Xian Chen, Su Liu, Qiao Tan, Yehuda Shoenfeld, Yong Zeng
Pregnancy is a special physical period in reproductive age women, which has a beneficial influence on the course of certain autoimmune diseases. It has been recently suggested that the microbiome undergoes profound changes during pregnancy that are associated with host physiological and immunological adaptations. The maternal microbiome remodeling during pregnancy is an active response of the mother, possibly to alter immune system status and to facilitate metabolic and immunological adaptations, which are needed for a successful pregnancy...
February 21, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28224282/micrornas-effective-elements-in-ear-related-diseases-and-hearing-loss
#7
REVIEW
Mohammad-Reza Mahmoudian-Sani, Ameneh Mehri-Ghahfarrokhi, Fereshteh Ahmadinejad, Morteza Hashemzadeh-Chaleshtori, Massoud Saidijam, Mohammad-Saeid Jami
miRNAs are important factors for post-transcriptional process that controls gene expression at mRNA level. Various biological processes, including growth and differentiation, are regulated by miRNAs. miRNAs have been demonstrated to play an essential role in development and progression of hearing loss. Nowadays, miRNAs are known as critical factors involved in different physiological, biological, and pathological processes, such as gene expression, progressive sensorineural hearing loss, age-related hearing loss, noise-induced hearing loss, cholesteatoma, schwannomas, and inner ear inflammation...
February 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28224111/attributable-cost-of-a-nosocomial-infection-in-the-intensive-care-unit-a-prospective-cohort-study
#8
Binila Chacko, Kurien Thomas, Thambu David, Hema Paul, Lakshmanan Jeyaseelan, John Victor Peter
AIM: To study the impact of hospital-acquired infections (HAIs) on cost and outcome from intensive care units (ICU) in India. METHODS: Adult patients (> 18 years) admitted over 1-year, to a 24-bed medical critical care unit in India, were enrolled prospectively. Treatment cost and outcome data were collected. This cost data was merged with HAI data collected prospectively by the Hospital Infection Control Committee. Only infections occurring during ICU stay were included...
February 4, 2017: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28224100/early-infant-male-circumcision-systematic-review-risk-benefit-analysis-and-progress-in-policy
#9
Brian J Morris, Sean E Kennedy, Alex D Wodak, Adrian Mindel, David Golovsky, Leslie Schrieber, Eugenie R Lumbers, David J Handelsman, John B Ziegler
AIM: To determine whether recent evidence-based United States policies on male circumcision (MC) apply to comparable Anglophone countries, Australia and New Zealand. METHODS: Articles in 2005 through 2015 were retrieved from PubMed using the keyword "circumcision" together with 36 relevant subtopics. A further PubMed search was performed for articles published in 2016. Searches of the EMBASE and Cochrane databases did not yield additional citable articles. Articles were assessed for quality and those rated 2+ and above according to the Scottish Intercollegiate Grading System were studied further...
February 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28224091/imaging-of-the-pediatric-thymus-clinicoradiologic-approach
#10
REVIEW
Smita Manchanda, Ashu S Bhalla, Manisha Jana, Arun K Gupta
The thymus is a lymphatic organ that undergoes dynamic changes with age and disease. It is important to be familiar with these physiological changes in the thymus gland to be able to identify pathology and make an accurate diagnosis. The thymus may be involved in multisystem disorders or show focal isolated lesions. The aim of this article is to review the radiological anatomy of the thymus, normal variants, and pathology including hyperplasia and benign/malignant lesions involving the thymus gland in the pediatric age group...
February 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28223945/toward-respiratory-assessment-using-depth-measurements-from-a-time-of-flight-sensor
#11
Charles Sharp, Vahid Soleimani, Sion Hannuna, Massimo Camplani, Dima Damen, Jason Viner, Majid Mirmehdi, James W Dodd
Introduction: There is increasing interest in technologies that may enable remote monitoring of respiratory disease. Traditional methods for assessing respiratory function such as spirometry can be expensive and require specialist training to perform and interpret. Remote, non-contact tracking of chest wall movement has been explored in the past using structured light, accelerometers and impedance pneumography, but these have often been costly and clinical utility remains to be defined. We present data from a 3-Dimensional time-of-flight camera (found in gaming consoles) used to estimate chest volume during routine spirometry maneuvres...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28223907/comparative-bioavailability-and-utilization-of-particular-forms-of-b12-supplements-with-potential-to-mitigate-b12-related-genetic-polymorphisms
#12
REVIEW
Cristiana Paul, David M Brady
CONTEXT: Three natural forms of vitamin B12 are commercially available: methylcobalamin (MeCbl), adenosylcobalamin (AdCbl), and hydroxycobalamin (OHCbl), all of which have been shown in clinical studies to improve vitamin B12 status. They are bioidentical to the B12 forms occurring in human physiology and animal foods. In contrast, cyanocobalamin (CNCbl), a synthetic B12 compound used for food fortification and in some supplements, occurs only in trace amounts in human tissues as a result of cyanide intake from smoking or other sources...
February 2017: Integrative Medicine
https://www.readbyqxmd.com/read/28223789/the-determinants-of-coping-with-pain-in-chronically-ill-geriatric-patients-the-role-of-a-sense-of-coherence
#13
Anna Andruszkiewicz, Małgorzata Anna Basińska, Mirosława Felsmann, Mariola Banaszkiewicz, Alicja Marzec, Kornelia Kędziora-Kornatowska
BACKGROUND: Given the rising population of the elderly in modern societies, the concern for their good functioning poses a challenge for the 21st century medicine and social services. Senior citizens are at an increased risk of developing chronic conditions, which in turn increase discomfort associated with physiological processes of aging. Sensations of pain have a particular influence on the mentioned discomfort, and pain is prevalent among older people. Therefore, from the perspective of an elderly person and senior care, it is crucial to identify determinants of effective coping with chronic pain...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28223513/single-neuron-identification-of-chemical-constituents-physiological-changes-and-metabolism-using-mass-spectrometry
#14
Hongying Zhu, Guichang Zou, Ning Wang, Meihui Zhuang, Wei Xiong, Guangming Huang
The use of single-cell assays has emerged as a cutting-edge technique during the past decade. Although single-cell mass spectrometry (MS) has recently achieved remarkable results, deep biological insights have not yet been obtained, probably because of various technical issues, including the unavoidable use of matrices, the inability to maintain cell viability, low throughput because of sample pretreatment, and the lack of recordings of cell physiological activities from the same cell. In this study, we describe a patch clamp/MS-based platform that enables the sensitive, rapid, and in situ chemical profiling of single living neurons...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223455/acute-fetal-demise-with-first-trimester-maternal-infection-resulting-from-listeria-monocytogenes-in-a-nonhuman-primate-model
#15
Bryce Wolfe, Gregory J Wiepz, Michele Schotzko, Gennadiy I Bondarenko, Maureen Durning, Heather A Simmons, Andres Mejia, Nancy G Faith, Emmanuel Sampene, Marulasiddappa Suresh, Sophia Kathariou, Charles J Czuprynski, Thaddeus G Golos
Infection with Listeria monocytogenes during pregnancy is associated with miscarriage, preterm birth, and neonatal complications, including sepsis and meningitis. While the risk of these conditions is thought to be greatest during the third trimester of pregnancy, the determinants of fetoplacental susceptibility to infection, the contribution of gestational age, and the in vivo progression of disease at the maternal-fetal interface are poorly understood. We developed a nonhuman primate model of listeriosis to better understand antecedents of adverse pregnancy outcomes in early pregnancy...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28223222/disrupting-the-key-circadian-regulator-clock-leads-to-age-dependent-cardiovascular-disease
#16
Faisal J Alibhai, Jonathan LaMarre, Cristine J Reitz, Elena V Tsimakouridze, Jeffrey T Kroetsch, Steffen-Sebastian Bolz, Alex Shulman, Samantha Steinberg, Thomas P Burris, Gavin Y Oudit, Tami A Martino
The circadian mechanism underlies daily rhythms in cardiovascular physiology and rhythm disruption is a major risk factor for heart disease and worse outcomes. However, the role of circadian rhythms is generally clinically unappreciated. Clock is a core component of the circadian mechanism and here we examine the role of Clock as a vital determinant of cardiac physiology and pathophysiology in aging. Clock(Δ19/Δ19) mice develop age-dependent increases in heart weight, hypertrophy, dilation, impaired contractility, and reduced myogenic responsiveness...
February 18, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28222581/a-comparison-of-the-physiological-demands-imposed-by-competing-in-a-half-marathon-vs-a-marathon
#17
Juan Del Coso, Juan J Salinero, Beatriz Lara, Javier Abián-Vicén, César Gallo-Salazar, Francisco Areces
BACKGROUND: While there is widespread scientific information about the physiological challenges imposed on elite endurance runners during competitions, the information regarding the amateur population is scarce. The aim of this study was to compare the physical and physiological load imposed by competing in a real half-marathon vs a marathon race. METHODS: From a larger group of participants, we selected 22 experienced runners who were matched in pairs (11 marathoners and 11 half-marathoners) for age and anthropometric data...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28222167/emergence-and-development-of-gut-motility-in-the-chicken-embryo
#18
N R Chevalier, V Fleury, S Dufour, V Proux-Gillardeaux, A Asnacios
The gastrointestinal tract transports the food bolus by peristalsis. Gut motility starts at an early age in the developing embryo, well before it is required for nutrition of the organism. We present a comprehensive kinematic study of the emergence and physiological development of gut motility in all regions of the lower digestive tract of the chicken embryo from embryonic days E5 through E9. We characterized motility emergence time, propagation patterns, speed, frequency and amplitude of peristalsis waves...
2017: PloS One
https://www.readbyqxmd.com/read/28220740/the-spectrum-and-outcome-of-surgical-sepsis-in-pietermaritzburg-south-africa
#19
S Green, V Y Kong, D L Clarke, B Sartorius, J Odendaal, J L Bruce, G L Laing, P Brysiewicz, W Bekker, E Harknett
BACKGROUND: Sepsis is a leading cause of morbidity and mortality worldwide, and the incidence appears to be increasing. In the resource-limited environment in low- and middle-income countries, the management of surgical sepsis (SS) continues to represent a significant portion of the workload for most general surgeons. OBJECTIVE: To describe the spectrum of SS seen at a busy emergency department, and categorise the outcomes. METHODS: The Pietermaritzburg Metropolitan Trauma Service (PMTS) and Pietermaritzburg Metropolitan Surgical Service (PMSS) in KwaZulu-Natal Province, South Africa (SA), maintain a prospective electronic registry...
January 30, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28220079/muro-neuro-urodynamics-a-review-of-the-functional-assessment-of-mouse-lower-urinary-tract-function
#20
REVIEW
Hiroki Ito, Anthony E Pickering, Yasuhiko Igawa, Anthony J Kanai, Christopher H Fry, Marcus J Drake
Background: Mouse urodynamic tests are fundamental to understanding normal lower urinary tract (LUT) function. These experiments also contribute to our understanding of neurological dysfunction, pathophysiological processes, and potential mechanisms of therapy. Objectives: Systematic assessment of published evidence on urodynamics, advantages and limitations of different urodynamic measurements in mice, and consideration of potential implications for the clinical field. Methods: A search using specific search-terms for urodynamic studies and mice was conducted on PubMed (from inception to 1 July 2016)...
2017: Frontiers in Physiology
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