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High Altitude Medicine & Biology

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https://www.readbyqxmd.com/read/28418725/medex-2015-heart-rate-variability-predicts-development-of-acute-mountain-sickness
#1
Angus Sutherland, Joseph Freer, Laura Evans, Alberto Dolci, Matteo Crotti, Jamie Hugo Macdonald
Sutherland, Angus, Joseph Freer, Laura Evans, Alberto Dolci, Matteo Crotti, and Jamie Hugo Macdonald. MEDEX 2015: Heart rate variability predicts development of acute mountain sickness. High Alt Med Biol 00:000-000, 2017. AIMS: Acute mountain sickness (AMS) develops when the body fails to acclimatize to atmospheric changes at altitude. Preascent prediction of susceptibility to AMS would be a useful tool to prevent subsequent harm. Changes to peripheral oxygen saturation (SpO2) on hypoxic exposure have previously been shown to be of poor predictive value...
April 18, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28418708/long-trekking-experience-at-high-altitude-causes-testicular-volumetric-reduction-in-humans-evidence-based-on-magnetic-resonance-imaging
#2
Vittore Verratti, Armando Tartaro, Stefano Falone, Maurizio Pellegrini, Fiore Pelliccione, Camillo Di Giulio
No abstract text is available yet for this article.
April 18, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28394182/medex2015-greater-sea-level-fitness-is-associated-with-lower-sense-of-effort-during-himalayan-trekking-without-worse-acute-mountain-sickness
#3
Gabriella M K Rossetti, Jamie H Macdonald, Matthew Smith, Anna R Jackson, Nigel Callender, Hannah K Newcombe, Heather M Storey, Sebastian Willis, Jojanneke van den Beukel, Jonathan Woodward, James Pollard, Benjamin Wood, Victoria Newton, Jana Virian, Owen Haswell, Samuel J Oliver
Rossetti, Gabriella M.K., Jamie H. Macdonald, Matthew Smith, Anna R. Jackson, Nigel Callender, Hannah K. Newcombe, Heather M. Storey, Sebastian Willis, Jojanneke van den Beukel, Jonathan Woodward, James Pollard, Benjamin Wood, Victoria Newton, Jana Virian, Owen Haswell, and Samuel J. Oliver. MEDEX2015: Greater sea-level fitness is associated with lower sense of effort during Himalayan trekking without worse acute mountain sickness. High Alt Med Biol 00:000-000, 2017.-This study examined the complex relationships of fitness and hypoxic sensitivity with submaximal exercise responses and acute mountain sickness (AMS) at altitude...
April 10, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28375664/effects-of-short-term-acclimatization-at-the-summit-of-mt-fuji-3776%C3%A2-m-on-sleep-efficacy-cardiovascular-responses-and-ventilatory-responses
#4
Masahiro Horiuchi, Shiro Oda, Tadashi Uno, Junko Endo, Yoko Handa, Yoshiyuki Fukuoka
Horiuchi, Masahiro, Shiro Oda, Tadashi Uno, Junko Endo, Yoko Handa, and Yoshiyuki Fukuoka. Effects of short-term acclimatization at the summit of Mt. Fuji (3776 m) on sleep efficacy, cardiovascular responses, and ventilatory responses. High Alt Med Biol 00:000-000, 2017.-We investigated the effects of a short period of acclimatization, at 3776 m on Mt. Fuji, on sleep parameters and related physiological responses. Physiological responses were assessed in seven healthy lowlander men during both daytime and sleep while at sea level (SL), as well as for three consecutive nights at high altitude (HA; 3776 m, day 1 [D1], D2, D3, and morning only of D4)...
April 4, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28375663/respiratory-health-benefits-and-risks-of-living-at-moderate-altitude
#5
Colin K Grissom, Barbara E Jones
Grissom, Colin K., Barbara E. Jones. Respiratory health benefits and risks of living at moderate altitude. High Alt Med Biol 00:000-000, 2017.-The respiratory system plays a critical role in the series of physiologic responses that occur at high altitude and allows individuals to adapt to and tolerate hypobaric hypoxia. Persons with underlying lung disease may have complications, but sometimes derive benefits, related to residence at high altitude. This review will focus on health benefits and risks of patients with underlying asthma, chronic obstructive pulmonary disease, pulmonary hypertension, or obstructive sleep apnea, who live at altitudes of 1500 to 4500 m...
April 4, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28346847/does-acute-normobaric-hypoxia-induce-anapyrexia-in-adult-humans
#6
Yongsuk Seo, Hayden D Gerhart, Jeremiah Vaughan, Jung-Hyun Kim, Ellen L Glickman
Seo, Yongsuk, Hayden D. Gerhart, Jeremiah Vaughan, Jung-Hyun Kim, and Ellen L. Glickman. Does acute normobaric hypoxia induce anapyrexia in adult humans? High Alt Med Biol 00:000-000, 2017.-Exposure to hypoxia is known to induce a reduction in core body temperature as a protective mechanism, which has been shown in both animals and humans. The purpose of this study was to test if acute exposure to normobaric hypoxia (NH) induces anapyrexia in adult humans in association with decreased peripheral oxygen saturation (SpO2)...
March 27, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28333563/effect-of-high-altitude-exposure-on-intraocular-pressure-using-goldmann-applanation-tonometry
#7
Gabriel Willmann, Kai Schommer, Maximilian Schultheiss, M Dominik Fischer, Karl-Ulrich Bartz-Schmidt, Florian Gekeler, Andreas Schatz
Willmann, Gabriel, Kai Schommer, Maximilian Schultheiss, M. Dominik Fischer, Karl-Ulrich Bartz-Schmidt, Florian Gekeler, and Andreas Schatz. Effect of high altitude exposure on intraocular pressure using Goldmann applanation tonometry. High Alt Med Biol. 00:000-000, 2017. AIMS: The aim of the study was to quantify changes of intraocular pressure (IOP) during exposure to 4559 m using the state-of-the-art method of Goldmann applanation tonometry for IOP measurement and to detect correlations between IOP and acute mountain sickness (AMS) in a prospective manner...
March 23, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28326844/oxidative-stress-in-acute-hypobaric-hypoxia
#8
Sebastián Irarrázaval, Claudio Allard, Juan Campodónico, Druso Pérez, Pablo Strobel, Luis Vásquez, Inés Urquiaga, Guadalupe Echeverría, Federico Leighton
Irarrázaval, Sebastián, Claudio Allard, Juan Campodónico, Druso Pérez, Pablo Strobel, Luis Vásquez, Inés Urquiaga, Guadalupe Echeverría, and Federico Leighton. Oxidative stress in acute hypobaric hypoxia. High Alt Med Biol. 00:000-000, 2017.-The effects of acute hypobaric hypoxia endured by mountaineers were studied, specifically as evidenced by acute mountain sickness (AMS) and oxidative stress damage. Ten male volunteers were exposed to acute hypobaric hypoxia, and AMS was evaluated through arterial oxygen saturation (SaO2), cardiac rate, and the Lake Louise Score (LLS)...
March 22, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28323448/effects-of-chronic-ghrelin-treatment-on-hypoxia-induced-brain-oxidative-stress-and-inflammation-in-a-rat-normobaric-chronic-hypoxia-model
#9
Hasan Omrani, Mohammad Reza Alipour, Fereshteh Farajdokht, Hadi Ebrahimi, Mehran Mesgari Abbasi, Gisou Mohaddes
AIM: This study aimed to evaluate the probable antioxidant effects of ghrelin in the brain and serum and its effect on tumor necrosis factor-alpha (TNF-α) levels in the brain in a model of chronic systemic hypoxia in rats. METHODS: Systemic hypoxia was induced by a normobaric hypoxic chamber (O2 11%) for ten days. Adult male Wistar rats were divided into control (C), chronic ghrelin (80 μg/kg/10 days) (Ghr), chronic hypoxia (CH), and CH and ghrelin (80 μg/kg/ip/10 days) (CH + Gh) groups...
March 21, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28294639/physiological-changes-to-the-cardiovascular-system-at-high-altitude-and-its-effects-on-cardiovascular-disease
#10
Callum James Riley, Matthew Gavin
Riley, Callum James, and Matthew Gavin. Physiological changes to the cardiovascular system at high altitude and its effects on cardiovascular disease. High Alt Med Biol. 00:000-000, 2017.-The physiological changes to the cardiovascular system in response to the high altitude environment are well understood. More recently, we have begun to understand how these changes may affect and cause detriment to cardiovascular disease. In addition to this, the increasing availability of altitude simulation has dramatically improved our understanding of the physiology of high altitude...
March 15, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28256920/are-permanent-residents-of-high-altitude-fully-adapted-to-their-hypoxic-environment
#11
John B West
West, John B. Are permanent residents of high altitude fully adapted to their hypoxic environment? High Alt Med Biol 00:000-000, 2017. Millions of people live permanently at high altitude and many have been there for generations. It is sometimes claimed that these people have completely adapted to their environment, and certainly some remarkable genetic adaptations have recently been described. However there is now strong evidence that permanent residents are not completely adapted to the high altitude in the sense that they have fully compensated for the environmental hypoxia...
March 3, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28398844/breathlessness-at-high-altitude-first-episode-of-bronchoconstriction-in-an-otherwise-healthy-sojourner
#12
Sanjeeb Sudarshan Bhandari, Pranawa Koirala, Sadichhya Lohani, Pratibha Phuyal, Buddha Basnyat
Bhandari, Sanjeeb Sudarshan, Pranawa Koirala, Sadichhya Lohani, Pratibha Phuyal, and Buddha Basnyat. Breathlessness at high altitude: first episode of bronchoconstriction in an otherwise healthy sojourner. High Alt Med Biol. 16:000-000, 2017-High-altitude illness is a collective term for less severe acute mountain sickness and more severe high-altitude pulmonary edema (HAPE) and high-altitude cerebral edema, which we can experience while traveling to high altitude. These get better when we get down to the lower altitudes...
February 21, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28128652/extensive-microhemorrhages-of-the-cerebellar-peduncles-after-high-altitude-cerebral-edema
#13
Jacqueline Pichler Hefti, Philipp Hoigné-Perret, Raimund Kottke
Pichler Hefti, Jacqueline, Philipp Hoigné-Perret, and Raimund Kottke. Extensive microhemorrhages of the cerebellar peduncles after high-altitude cerebral edema. High Alt Med Biol 00:000-000, 2017.-Neuromagnetic resonance imaging (MRI) of subjects who suffered from high-altitude cerebral edema (HACE) typically shows cerebral microhemorrhages (MH) of the corpus callosum, in particular the splenium, and supratentorial white matter. This is a case report of a 43-year-old male, who suffered from unusually prolonged severe ataxia and amnesia after having been rescued during the ascent to Mount Everest at 6400 m...
January 27, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28306414/cross-sectional-comparison-of-sleep-disordered-breathing-in-native-peruvian-highlanders-and-lowlanders
#14
Luu V Pham, Christopher Meinzen, Rafael S Arias, Noah G Schwartz, Adi Rattner, Catherine H Miele, Philip L Smith, Hartmut Schneider, J Jaime Miranda, Robert H Gilman, Vsevolod Y Polotsky, William Checkley, Alan R Schwartz
Pham, Luu V., Christopher Meinzen, Rafael S. Arias, Noah G. Schwartz, Adi Rattner, Catherine H. Miele, Philip L. Smith, Hartmut Schneider, J. Jaime Miranda, Robert H. Gilman, Vsevolod Y. Polotsky, William Checkley, and Alan R. Schwartz. Cross-sectional comparison of sleep-disordered breathing in native Peruvian highlanders and lowlanders. High Alt Med Biol. 18:11-19, 2017. BACKGROUND: Altitude can accentuate sleep disordered breathing (SDB), which has been linked to cardiovascular and metabolic diseases...
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28306413/response-to-pun-re-chronic-intermittent-hypoxia-and-blood-pressure-is-there-risk-for-hypertension-in-healthy-individuals
#15
Denis Vinnikov
No abstract text is available yet for this article.
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28306412/periodic-high-altitude-exposure-and-chronic-intermittent-hypoxia-are-they-the-same
#16
Matiram Pun
No abstract text is available yet for this article.
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28266873/alteration-of-spontaneous-brain-activity-after-hypoxia-reoxygenation-a-resting-state-fmri-study
#17
Jiaxing Zhang, Ji Chen, Cunxiu Fan, Jinqiang Li, Jianzhong Lin, Tianhe Yang, Ming Fan
Zhang, Jiaxing, Ji Chen, Cunxiu Fan, Jinqiang Li, Jianzhong Lin, Tianhe Yang, and Ming Fan. Alteration of spontaneous brain activity after hypoxia-reoxygenation: A resting-state fMRI study. High Alt Med Biol. 18:20-26, 2017.-The present study was designed to investigate the effect of hypoxia-reoxygenation on the spontaneous neuronal activity in brain. Sixteen sea-level (SL) soldiers (20.5 ± 0.7 years), who garrisoned the frontiers in high altitude (HA) (2300-4400 m) for two years and subsequently descended to sea level for one to seven days, were recruited...
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28135110/the-influence-of-17-hours-of-normobaric-hypoxia-on-parallel-adjustments-in-exhaled-nitric-oxide-and-airway-function-in-lowland-healthy-adults
#18
Erik H Van Iterson, Eric M Snyder, Bruce D Johnson
Van Iterson, Erik H., Eric M. Snyder, and Bruce D. Johnson. The influence of 17 hours of normobaric hypoxia on parallel adjustments in exhaled nitric oxide and airway function in lowland healthy adults. High Alt Med Biol. 18:1-10, 2017.-Currently, there is a disparate understanding of the role that normobaric hypoxia plays in affecting nitric oxide (NO) measured in exhaled air (eNO) and airway function in lowland healthy adults. Compared to normobaric normoxia, this study aimed to test the effect of 17 hours of normobaric hypoxia on relationships between eNO and airway function in healthy adults...
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28112542/review-of-mountain-medicine-and-technical-rescue
#19
Ken Zafren
No abstract text is available yet for this article.
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28106468/proceedings-of-bmres-altitude-medicine-conference-november-26th-2016-birmingham-united-kingdom
#20
Lauren E Gault, Christopher T Lewis, Hannah E Lock
No abstract text is available yet for this article.
March 2017: High Altitude Medicine & Biology
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