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https://www.readbyqxmd.com/read/28518006/cooling-effects-of-wearer-controlled-vaporization-for-extravehicular-activity
#1
Kunihiko Tanaka, Daiki Nagao, Kosuke Okada, Koji Nakamura
INTRODUCTION: The extravehicular activity suit currently used by the United States in space includes a liquid cooling and ventilation garment (LCVG) that controls thermal conditions. Previously, we demonstrated that self-perspiration for evaporative cooling (SPEC) garment effectively lowers skin temperature without raising humidity in the garment. However, the cooling effect is delayed until a sufficient dose of water permeates and evaporates. In the present study, we hypothesized that wearer-controlled vaporization improves the cooling effect...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28462102/systematic-review-of-type-specific-pathophysiological-symptoms-of-sasang-typology
#2
REVIEW
Yoo Ri Han, Han Byul Lee, Sang Yun Han, Byung Joo Kim, Soo Jin Lee, Han Chae
Previous studies on the Sasang typology have focused on the differential diagnosis of each Sasang type with type-specific pathophysiological symptoms (TSPS). The purpose of this study was to elucidate the latent physiological mechanism related to these clinical indicators. We searched six electronic databases for articles published from 1990 to 2015 using the Sasang typology-related keywords, and found and analyzed 35 such articles. The results were summarized into six TSPS categories: perspiration, temperature preference, sleep, defecation, urination, and susceptibility to stress...
June 2016: Integr Med Res
https://www.readbyqxmd.com/read/28438272/inspiration-perspiration-and-execution-an-innovator-s-perspective
#3
Josh Makower
Josh Makower, MD, is a General Partner at New Enterprise Associates, Consulting Professor of Medicine at Stanford University Medical School, Co-Founder of Stanford's Biodesign Innovation Program, and Founder and Executive Chairman of the medical device incubator, ExploraMed Development, LLC.
May 2017: Surgery
https://www.readbyqxmd.com/read/28416667/autonomous-sweat-extraction-and-analysis-applied-to-cystic-fibrosis-and-glucose-monitoring-using-a-fully-integrated-wearable-platform
#4
Sam Emaminejad, Wei Gao, Eric Wu, Zoe A Davies, Hnin Yin Yin Nyein, Samyuktha Challa, Sean P Ryan, Hossain M Fahad, Kevin Chen, Ziba Shahpar, Salmonn Talebi, Carlos Milla, Ali Javey, Ronald W Davis
Perspiration-based wearable biosensors facilitate continuous monitoring of individuals' health states with real-time and molecular-level insight. The inherent inaccessibility of sweat in sedentary individuals in large volume (≥10 µL) for on-demand and in situ analysis has limited our ability to capitalize on this noninvasive and rich source of information. A wearable and miniaturized iontophoresis interface is an excellent solution to overcome this barrier. The iontophoresis process involves delivery of stimulating agonists to the sweat glands with the aid of an electrical current...
May 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28396935/state-of-the-art-in-fluid-and-volume-therapy-a%C3%A2-user-friendly-staged-concept-english-version
#5
M Rehm, N Hulde, T Kammerer, A S Meidert, K Hofmann-Kiefer
Adequate intraoperative infusion therapy is essential for the perioperative outcome of a patient. Both hypo- and hypervolemia can lead to an increased rate of perioperative complications and to a worse outcome. Perioperative infusion therapy should therefore be needs-based. The primary objective is the maintenance of preoperative normovolemia using a rational infusion strategy. Perioperative fluid losses should be differentiated from volume losses due to surgical bleeding or protein losses into the interstitial space...
April 10, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28373979/human-excretion-of-polybrominated-diphenyl-ether-flame-retardants-blood-urine-and-sweat-study
#6
Shelagh K Genuis, Detlef Birkholz, Stephen J Genuis
Commonly used as flame retardants, polybrominated diphenyl ethers (PBDEs) are routinely detected in the environment, animals, and humans. Although these persistent organic pollutants are increasingly recognized as having serious health implications, particularly for children, this is the first study, to our knowledge, to investigate an intervention for human elimination of bioaccumulated PBDEs. Objectives. To determine the efficacy of blood, urine, and perspiration as PBDE biomonitoring mediums; assess excretion of five common PBDE congeners (28, 47, 99, 100, and 153) in urine and perspiration; and explore the potential of induced sweating for decreasing bioaccumulated PBDEs...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28328088/evaluation-of-the-correlation-between-severity-of-acquired-idiopathic-generalized-anhidrosis-and-quality-of-life-scores
#7
Takichi Munetsugu, Tomoko Fujimoto, Takahiro Satoh, Yoshihiko Nakazato, Yuichiro Ohshima, Masato Asahina, Hiroo Yokozeki
Symptoms of acquired idiopathic generalized anhidrosis (AIGA) include heat retention and/or heat stroke due to the effects of the disorder on the perspiration ability of the whole body under thermal environmental changes or exercise. Additionally, cholinergic urticaria can also occur in these patients. AIGA has a major impact on everyday life. However, the effects of AIGA severity on the quality of life (QOL) of the patients have not been sufficiently defined. The objective of this study was to evaluate the correlation between AIGA severity and QOL...
March 22, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28281646/reversible-humidity-sensitive-clothing-for-personal-thermoregulation
#8
Ying Zhong, Fenghua Zhang, Meng Wang, Calvin J Gardner, Gunwoo Kim, Yanju Liu, Jinsong Leng, Sungho Jin, Renkun Chen
Two kinds of humidity-induced, bendable smart clothing have been designed to reversibly adapt their thermal insulation functionality. The first design mimics the pores in human skin, in which pre-cut flaps open to produce pores in Nafion sheets when humidity increases, as might occur during human sweating thus permitting air flow and reducing both the humidity level and the apparent temperature. Like the smart human sweating pores, the flaps can close automatically after the perspiration to keep the wearer warm...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28239923/we-know-that-horses-sweat-and-men-perspire-but-do-ladies-merely-glow
#9
Daniel Gagnon
No abstract text is available yet for this article.
February 26, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28218507/enabling-inkjet-printed-graphene-for-ion-selective-electrodes-with-postprint-thermal-annealing
#10
Qing He, Suprem R Das, Nathaniel T Garland, Dapeng Jing, John A Hondred, Allison A Cargill, Shaowei Ding, Chandran Karunakaran, Jonathan C Claussen
Inkjet printed graphene (IPG) has recently shown tremendous promise in reducing the cost and complexity of graphene circuit fabrication. Herein we demonstrate, for the first time, the fabrication of an ion selective electrode (ISE) with IPG. A thermal annealing process in a nitrogen ambient environment converts the IPG into a highly conductive electrode (sheet resistance changes from 52.8 ± 7.4 MΩ/□ for unannealed graphene to 172.7 ± 33.3 Ω/□ for graphene annealed at 950 °C). Raman spectroscopy and field emission scanning electron microscopy (FESEM) analysis reveals that the printed graphene flakes begin to smooth at an annealing temperature of 500 °C and then become more porous and more electrically conductive when annealed at temperatures of 650 °C and above...
March 30, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28197582/wearable-microfluidics-fabric-based-digital-droplet-flowmetry-for-perspiration-analysis
#11
Yahui Yang, Siyuan Xing, Zecong Fang, Ruya Li, Helen Koo, Tingrui Pan
The latest development in wearable technologies has attracted much attention. In particular, collection and analysis of body fluids has been a focus. In this paper, we have reported a wearable microfluidic platform made using conventional fabric materials and laser micromachining to measure the flow rate on a patterned fabric surface, referred to as digital droplet flowmetry (DDF). The proposed wearable DDF is capable of collecting and measuring continuous perspiration with high precision (96% on average) in a real-time fashion over a defined area of skin...
February 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28195229/international-spinal-cord-injury-bowel-function-basic-data-set-version-2-0
#12
K Krogh, A Emmanuel, B Perrouin-Verbe, M A Korsten, M J Mulcahey, F Biering-Sørensen
STUDY DESIGN: International expert working group. OBJECTIVES: To revise the International Spinal Cord Injury (SCI) Bowel Function Basic Data Set as a standardized format for the collecting and reporting of a minimal amount of information on bowel function in clinical practice and research. SETTING: Working group appointed by the American Spinal injury association (ASIA) and the International Spinal Cord Society (ISCoS). METHODS: The draft prepared by the working group was reviewed by the International SCI Data Set Committee and later by members of the ISCoS Executive and Scientific Committees and the ASIA board...
February 14, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28167366/a-stretchable-and-screen-printed-electrochemical-sensor-for-glucose-determination-in-human-perspiration
#13
A Abellán-Llobregat, Itthipon Jeerapan, A Bandodkar, L Vidal, A Canals, J Wang, E Morallón
Here we present two types of all-printable, highly stretchable, and inexpensive devices based on platinum (Pt)-decorated graphite for glucose determination in physiological fluids. Said devices are: a non-enzymatic sensor and an enzymatic biosensor, the latter showing promising results. Glucose has been quantified by measuring hydrogen peroxide (H2O2) reduction by chronoamperometry at -0.35V (vs pseudo-Ag/AgCl) using glucose oxidase immobilized on Pt-decorated graphite. The sensor performs well for the quantification of glucose in phosphate buffer solution (0...
May 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28151505/-a-late-diagnosis-of-left-atrial-myxoma-how-to-gain-time
#14
Ferdinando Maria Massari, Tatiana Tonella, Giuseppe Pomè, Alessandra Di Mauro, Claudio Clemente, Federico Lombardi
A 56-year-old man presented to the Outpatient Cardiology Unit for dyspnea that had been lasting 6 months and an occasional episode of cold perspiration on climbing a flight of stairs. In the suspicion of coronary artery disease, he was prescribed a complete blood panel, an echocardiogram and a treadmill stress test. The echocardiogram, performed as late as 78 days after the first evaluation and only by chance scheduled 2 days before the stress test, enabled a diagnosis of left atrial myxoma for which the patient successfully underwent cardiac surgery...
December 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28119158/sources-of-variance-within-and-among-young-men-in-concentrations-of-17%C3%AE-estradiol-and-testosterone-in-axillary-perspiration
#15
Brittney Elliott, Cameron Muir, Denys deCatanzaro
The most potent estrogen, 17β-estradiol (E2), and its precursor, testosterone (T), play critical roles in mammalian reproductive processes. Evidence indicates that these steroids are present in bioactive form in the excretions of many male mammals. It has been demonstrated that small lipophilic steroids such as E2 can be absorbed by proximate females from male excretions, arriving in the uterus, brain, and other organs where there are estrogen receptors. We took repeated samples of axillary perspiration from men aged 20-30years during vigorous exercise...
January 21, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/27997669/prosthesis-management-of-residual-limb-perspiration-with-subatmospheric-vacuum-pressure
#16
Glenn K Klute, Katherine J Bates, Jocelyn S Berge, Wayne Biggs, Charles King
For the ambulatory person with lower-limb amputation, insufficient management of perspiration can result in inadequate prosthesis adherence, reduced mobility, and discomfort. This study compared a dynamic air exchange (DAE) prosthesis designed to expel accumulated perspiration with a total surface bearing suction socket (Suction) that cannot. Five people with unilateral transtibial amputation participated in a randomized, crossover experiment. All subjects were given a 1 wk acclimation to each study prosthesis while we measured their step activity levels...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27932937/effect-of-electrolyzed-high-ph-alkaline-water-on-blood-viscosity-in-healthy-adults
#17
RANDOMIZED CONTROLLED TRIAL
Joseph Weidman, Ralph E Holsworth, Bradley Brossman, Daniel J Cho, John St Cyr, Gregory Fridman
BACKGROUND: Previous research has shown fluid replacement beverages ingested after exercise can affect hydration biomarkers. No specific hydration marker is universally accepted as an ideal rehydration parameter following strenuous exercise. Currently, changes in body mass are used as a parameter during post-exercise hydration. Additional parameters are needed to fully appreciate and better understand rehydration following strenuous exercise. This randomized, double-blind, parallel-arm trial assessed the effect of high-pH water on four biomarkers after exercise-induced dehydration...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27911393/a-detailed-protocol-for-perspiration-monitoring-using-a-novel-small-wireless-device
#18
Kazuhiro Ogai, Masakazu Fukuoka, Kei-Ichiro Kitamura, Kiyoshi Uchide, Tetsu Nemoto
Perspiration monitoring can be utilized for the detection of certain diseases, such as thermoregulation and mental disorders, particularly when the patients are unaware of such disorders or are having difficulty expressing their symptoms. Until now, several devices for perspiration monitoring have been developed; however, such devices tend to have a relatively large exterior, considerable power consumption, and/or less sensitivity. Recently, we developed a small, wireless device for perspiration monitoring...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27900767/cumulative-changes-in-weight-but-not-fluid-volume-balances-reflect-fluid-accumulation-in-icu-patients
#19
M Köster, S Dennhardt, F Jüttner, H-B Hopf
BACKGROUND: The cumulative fluid balance of critically ill patients seems to be an outcome-relevant variable. However, there are no validated data for their reliability calculated for longer (> 5 days) periods of time. METHODS: All ICU patients ≥ 18 years, with an ICU stay ≥ 5 days and a body weight ≤ 195 kg were evaluated from 1 January 2013 to 31 December 2013. Daily standardized weighing was performed using bed-integrated scales simultaneously with the daily 24-h fluid balance...
February 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/27881826/a-soft-wearable-microfluidic-device-for-the-capture-storage-and-colorimetric-sensing-of-sweat
#20
Ahyeon Koh, Daeshik Kang, Yeguang Xue, Seungmin Lee, Rafal M Pielak, Jeonghyun Kim, Taehwan Hwang, Seunghwan Min, Anthony Banks, Philippe Bastien, Megan C Manco, Liang Wang, Kaitlyn R Ammann, Kyung-In Jang, Phillip Won, Seungyong Han, Roozbeh Ghaffari, Ungyu Paik, Marvin J Slepian, Guive Balooch, Yonggang Huang, John A Rogers
Capabilities in health monitoring enabled by capture and quantitative chemical analysis of sweat could complement, or potentially obviate the need for, approaches based on sporadic assessment of blood samples. Established sweat monitoring technologies use simple fabric swatches and are limited to basic analysis in controlled laboratory or hospital settings. We present a collection of materials and device designs for soft, flexible, and stretchable microfluidic systems, including embodiments that integrate wireless communication electronics, which can intimately and robustly bond to the surface of the skin without chemical and mechanical irritation...
November 23, 2016: Science Translational Medicine
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