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High Altitude Medicine & Biology

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https://read.qxmd.com/read/30720346/the-effect-of-an-expiratory-resistance-mask-with-dead-space-on-sleep-acute-mountain-sickness-cognition-and-ventilatory-acclimatization-in-normobaric-hypoxia
#1
Alexander Patrician, Michael M Tymko, Hannah G Caldwell, Connor A Howe, Geoff B Coombs, Rachel Stone, Allison Hamilton, Ryan L Hoiland, Philip N Ainslie
Patrician, Alexander, Michael M. Tymko, Hannah G. Caldwell, Connor A. Howe, Geoff B. Coombs, Rachel Stone, Allison Hamilton, Ryan L. Hoiland, and Philip N. Ainslie. The effect of an expiratory resistance mask with dead space on sleep, acute mountain sickness, cognition, and ventilatory acclimatization in normobaric hypoxia. High Alt Med Biol. 16:000-000, 2019.-We examined the hypothesis that an expiratory resistance mask containing a small amount of dead space (ER/DS) would reduce the apnea-hypopnea index (AHI) during sleep, attenuate the severity of acute mountain sickness (AMS), and offset decrements in cognitive function compared with a sham mask...
February 5, 2019: High Altitude Medicine & Biology
https://read.qxmd.com/read/30648898/ubc-nepal-expedition-cerebrovascular-responses-to-exercise-in-sherpa-children-residing-at-high-altitude
#2
Mathew G Rieger, Daniela Nowak-Flück, Laura E Morris, Shailesh Niroula, Kami T Sherpa, Christine M Tallon, Mike Stembridge, Philip N Ainslie, Ali M McManus
Rieger, Mathew G., Daniela Nowak-Flück, Laura E. Morris, Shailesh Niroula, Kami T. Sherpa, Christine M. Tallon, Mike Stembridge, Philip N. Ainslie, and Ali M. McManus. UBC-Nepal expedition: cerebrovascular responses to exercise in Sherpa children residing at high altitude. High Alt Med Biol 00:000-000, 2019.-Understanding the process of successful adaptation to high altitude provides valuable insight into the pathogenesis of conditions associated with impaired oxygen uptake and utilization. Prepubertal children residing at low altitude show a reduced cerebrovascular response to exercise in comparison to adults, and a transient uncoupling of cerebral blood flow to changes in the partial pressure of end-tidal CO2 (PET CO2 ); however, little is known about the cerebrovascular response to exercise in high-altitude native children...
January 16, 2019: High Altitude Medicine & Biology
https://read.qxmd.com/read/30615485/the-effect-of-a-300-mbar-increase-in-barometric-pressure-on-digital-microcirculation-in-healthy-subjects-exposed-to-high-altitude-is-the-use-of-a-portable-hyperbaric-chamber-to-treat-frostbite-and-or-hypothermia-in-the-field-indicated-flow_pulse-study
#3
Yann Savina, Sandra Leal, Pascal Zellner, François Becker, Monica Piris, Emmanuel Cauchy
Savina, Yann, Sandra Leal, Pascal Zellner, François Becker, Monica Piris, and Emmanuel Cauchy. The effect of a 300 mbar increase in barometric pressure on digital microcirculation in healthy subjects exposed to high altitude: Is the use of a portable hyperbaric chamber to treat frostbite and/or hypothermia in the field indicated? (Flow_Pulse Study). High Alt Med Biol. 18:000-000, 2019. INTRODUCTION: Hypothermia and frostbite occur when there is a significant decrease in central and peripheral body temperature in individuals exposed to cold windy conditions, often at high altitude or in a mountain environment...
January 7, 2019: High Altitude Medicine & Biology
https://read.qxmd.com/read/30585756/a-deeply-hypothermic-patient-presenting-with-vital-signs
#4
Giovanni Avancini, Federico Girardini, Enrico Polati
No abstract text is available yet for this article.
December 26, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30562120/re-drug-use-and-misuse-in-the-mountains-a-uiaa-medcom-consensus-guide-for-medical-professionals-by-donegani-et-al-high-alt-med-biol-17-157-184
#5
Fanyi Kong
No abstract text is available yet for this article.
December 18, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30543474/impact-of-a-3-day-high-altitude-trek-on-xue-mountain-3886-m-taiwan-on-the-emotional-states-of-children-a-prospective-observational-study
#6
Chun-Chieh Chao, Lung Hung Chen, Yin-Chou Lin, Shih-Hao Wang, Shih-Hao Wu, Wen-Cheng Li, Kuo-Feng Huang, Te-Fa Chiu, I-Chih Kuo
Chao, Chun-Chieh, Lung Hung Chen, Yin-Chou Lin, Shih-Hao Wang, Shih-Hao Wu, Wen-Cheng Li, Kuo-Feng Huang, Te-Fa Chiu, and I-Chih Kuo. Impact of a 3-day high-altitude trek on Xue Mountain (3886 m), Taiwan, on the emotional states of children: A prospective observational study. High Alt Med Biol. 18:000-000, 2018. AIMS: Changes in emotions associated with mountain treks have rarely been reported. This study examined emotional state changes in sixth-grade elementary school students before and after a 3-day high-altitude mountain trek from the trailhead (2140 m) to Xue Mountain (3886 m) in Taiwan...
December 13, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30526053/intercultural-competence-of-western-teachers-for-nepalese-rescuers
#7
Monika Brodmann Maeder, Raphael Saghir, Matiram Pun, Agnieszka Elzbieta Stawinoga, Rachel Turner, Giacomo Strapazzon, Aristomenis K Exadaktylos, Hermann Brugger
INTRODUCTION: Educational projects in mountain rescue in Nepal have a long tradition. They are usually led by Western experts who train their Nepalese colleagues using teams of people with diverse cultural background. To better understand the challenges of these encounters, we conducted a prospective cohort study during the first mountain rescue instructor course in Nepal. METHODS: Western instructors (WIs) and Nepalese instructor candidates (NICs) were asked to self-assess their intercultural competence with the help of questionnaires...
December 8, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30517038/acute-mountain-sickness-is-reduced-following-2-days-of-staging-during-subsequent-ascent-to-4300-m
#8
Beth A Beidleman, Charles S Fulco, Ellen L Glickman, Allen Cymerman, Robert W Kenefick, Bruce S Cadarette, Sean P Andrew, Janet E Staab, Ingrid V Sils, Stephen R Muza
Beidleman, Beth A., Charles S. Fulco, Ellen L. Glickman, Allen Cymerman, Robert W. Kenefick, Bruce S. Cadarette, Sean P. Andrew, Janet E. Staab, Ingrid V. Sils, and Stephen R. Muza. Acute mountain sickness is reduced following 2 days of staging during subsequent ascent to 4300 m. High Alt Med Biol 00:000-000, 2018. OBJECTIVE: To determine whether 2 days of staging at 2500-3500 m, combined with either high or low physical activity, reduces acute mountain sickness (AMS) during subsequent ascent to 4300 m...
December 5, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30517035/re-high-altitude-and-cancer-mortality-by-thiersch-and-swenson-high-alt-med-biol-2018-19-116-123
#9
Matiram Pun
No abstract text is available yet for this article.
December 5, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30523700/vitamin-e-reduces-hypobaric-hypoxia-induced-immune-responses-in-male-rats
#10
Ananda Raj Goswami, Tusharkanti Ghosh
Goswami, Ananda Raj, and Tusharkanti Ghosh. Vitamin E reduces hypobaric hypoxia-induced immune responses in male rats. High Alt Med Biol 00:000-000, 2018.-In hypobaric hypoxia (HH) at high altitude, the immune responses are changed probably due to oxidative stress-induced production of free radicals and nonradicals. Vitamin E is an antioxidant and protects the cells from oxidative damage. The present study was carried out to study the antioxidant role of vitamin E on the immune changes induced by oxidative stress in HH at high altitude...
December 4, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30489174/is-maximal-heart-rate-decrease-similar-between-normobaric-versus-hypobaric-hypoxia-in-trained-and-untrained-subjects
#11
Laurent Mourot, Grégoire P Millet
Mourot, Laurent and Grégoire P. Millet. Is maximal heart rate decrease similar between normobaric versus hypobaric hypoxia in trained and untrained subjects? High Alt Med Biol. 19:000-000, 2018.-(n = 187) We compared the decrease in maximal heart rate (HRmax) from normoxia to normobaric (NH) and hypobaric (HH) hypoxia, respectively, in trained and untrained subjects. HRmax data in normoxia and NH (n = 55) or HH (n = 26) were collected from 81 publications. No study directly compared HRmax in NH and HH...
November 29, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30484710/effects-of-acute-exposure-to-hypobaric-hypoxia-on-mucosal-barrier-injury-and-the-gastrointestinal-immune-axis-in-rats
#12
Kunjan Khanna, Kamla Prasad Mishra, Sudipta Chanda, Malleswara Rao Eslavath, Lilly Ganju, Bhuvnesh Kumar, Shashi Bala Singh
Khanna, Kunjan, K.P. Mishra, Sudipta Chanda, Malleswara Rao Eslavath, Lilly Ganju, Bhuvnesh Kumar, and Shashi Bala Singh. Effects of acute exposure to hypobaric hypoxia on mucosal barrier injury and the gastrointestinal immune axis in rats. High Alt Med Biol 00:000-000, 2018.-High altitude-induced gastrointestinal (GI) problems are potentially life-threatening. GI tract bleeding and inflammation are the major problems induced by hypobaric hypoxia (HH). In this study, effects of acute exposure to HH up to 14 days at 7620 m on GI immune function have been studied...
November 28, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30183350/on-site-treatment-of-snow-avalanche-victims-from-bench-to-mountainside
#13
Giacomo Strapazzon, Hermann Brugger
The number of avalanche accidents involving winter recreationists has notably increased in recent decades due to the increasing popularity of outdoor winter activities. The International Liaison Committee on Cardiopulmonary Resuscitation, the International Commission for Mountain Emergency Medicine (ICAR Medcom), and the Wilderness Medical Society have recently published evidenced-based recommendations for the on-site treatment of snow avalanche victims. Despite these recommendations, recent studies found poor knowledge and compliance by both healthcare providers and laypersons...
December 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30475063/the-contribution-of-genetic-variants-of-the-peroxisome-proliferator-activated-receptor-alpha-gene-to-high-altitude-hypoxia-adaptation-in-sherpa-highlanders
#14
Fumiya Kinota, Yunden Droma, Nobumitsu Kobayashi, Toshimichi Horiuchi, Yoshiaki Kitaguchi, Masanori Yasuo, Masao Ota, Masayuki Hanaoka
Kinota, Fumiya, Yunden Droma, Nobumitsu Kobayashi, Toshimichi Horiuchi, Yoshiaki Kitaguchi, Masanori Yasuo, Masao Ota, and Masayuki Hanaoka. The contribution of genetic variants of the gene encoding peroxisome proliferator-activated receptor-alpha gene (PPARA) to high-altitude hypoxia adaptation in Sherpa highlanders. High Alt Med Biol. 16:000-000, 2018.-Sherpa highlanders, who play invaluable roles in the exploration of Mount Everest, have exceptional tolerance to hypobaric hypoxia. Sherpa people are well known to possess the traits determined by genetic background for high-altitude adaptation...
November 22, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30376383/occurrence-of-acute-mountain-sickness-in-nonclimbing-tourists-at-mount-mitchell-north-carolina-2037-m
#15
David East, Janet Steele
No abstract text is available yet for this article.
October 30, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30362832/the-effects-of-high-altitude-on-glucose-homeostasis-metabolic-control-and-other-diabetes-related-parameters-from-animal-studies-to-real-life
#16
Theocharis Koufakis, Spyridon N Karras, Omar G Mustafa, Pantelis Zebekakis, Kalliopi Kotsa
Koufakis, Theocharis, Spyridon N. Karras, Omar G. Mustafa, Pantelis Zebekakis, and Kalliopi Kotsa. The effects of high altitude on glucose homeostasis, metabolic control, and other diabetes-related parameters: from animal studies to real life. High Alt Med Biol. 19:000-000, 2018.-Exposure to high altitude activates several complex and adaptive mechanisms aiming to protect human homeostasis from extreme environmental conditions, such as hypoxia and low temperatures. Short-term exposure is followed by transient hyperglycemia, mainly triggered by the activation of the sympathetic system, whereas long-term exposure results in lower plasma glucose concentrations, mediated by improved insulin sensitivity and augmented peripheral glucose disposal...
October 26, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30358417/effect-of-oral-vitamin-c-supplementation-on-high-altitude-hyperuricemia-in-young-men-initially-migrating-to-high-altitude-a-pilot-study
#17
Hui Peng, Dongfang Feng, Yingkai Wang, Zixi Dong, Qing Chen, Lihong Zhang, Ruigang Luo, Jinsong Chen, Anjun Wang, Shiwu Ma
Peng, Hui, Dongfang Feng, Yingkai Wang, Zixi Dong, Qing Chen, Lihong Zhang, Ruigang Luo, Jinsong Chen, Anjun Wang, and Shiwu Ma. Effect of oral vitamin C supplementation on high-altitude hyperuricemia in young men initially migrating to high altitude: a pilot study. High Alt Med Biol 00:000-000, 2018. OBJECTIVE: Clinical studies have shown that oral vitamin C supplementation can reduce serum uric acid levels in multiple populations and may also improve acute mountain sickness. However, it is unclear whether this protocol can improve high-altitude hyperuricemia...
October 24, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30335516/uiaa-medical-commission-recommendations-for-mountaineers-hillwalkers-trekkers-and-rock-and-ice-climbers-with-diabetes
#18
David Hillebrandt, Anil Gurtoo, Thomas Kupper, Paul Richards, Volker Schöffl, Pankaj Shah, Rianne van der Spek, Nikki Wallis, Jim Milledge
Hillebrandt, David, Anil Gurtoo, Thomas Kupper, Paul Richards, Volker Schöffl, Pankaj Shah, Rianne van der Spek, Nikki Wallis, and Jim Milledge. UIAA Medical Commission recommendations for mountaineers, hillwalkers, trekkers, and rock and ice climbers with diabetes. High Alt Med Biol 00:000-000, 2018.-The object of this advice article is not only to give the diabetic mountaineer general guidance but also to inform his or her medical team of practical aspects of care that may not be standard for nonmountaineers...
October 18, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30321066/re-high-altitude-and-cancer-mortality-by-thiersch-and-swenson-high-alt-med-biol-2018-19-116-123
#19
David Garrido, Santiago Garrido
No abstract text is available yet for this article.
October 13, 2018: High Altitude Medicine & Biology
https://read.qxmd.com/read/30281336/gestational-diabetes-prevalence-at-moderate-and-high-altitude
#20
Anna G Euser, Andrew Hammes, Jared T Ahrendsen, Barbara Neshek, David A Weitzenkamp, Javier Gutierrez, Peppi Koivunen, Colleen G Julian, Lorna G Moore
Euser, Anna G., Andrew Hammes, Jared T. Ahrendsen, Barbara Neistadt, David A. Weitzenkamp, Javier Gutierrez, Peppi Koivunen, Colleen G. Julian, and Lorna G. Moore. Gestational diabetes prevalence at moderate and high altitude. High Alt Med Biol. 00:000-000, 2018. BACKGROUND: High-altitude (HA) pregnancies have been associated with decreased glucose levels and increased insulin sensitivity versus sea level. Our objective was to determine if the prevalence of gestational diabetes mellitus (GDM) and the impact of demographic characteristics on GDM diagnosis differed at moderate altitude (MA) versus HA...
October 3, 2018: High Altitude Medicine & Biology
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