Abstract：
:The purpose of this study was to elucidate the magnitude and the time course of ventilatory changes resulting from a repeated series of hypoxic exposures. Eight healthy males participated in the present study. The subjects spent 1 h/day in normobaric hypoxia (12% inspired oxygen). Inspired minute ventilation (V(I)), end-tidal partial pressure of carbon dioxide (P(ET(CO2))), and arterial oxygen saturation (SaO2) were measured in a hypoxic tent. These measurements were taken for 10 consecutive days (series 1), and were taken again after the subjects had been away from hypoxic exposure for 1 month (series 2). P(ET(CO2)) decreased and SaO2 increased progressively in the hypoxic tent during the 10 days of intermittent hypoxia in series 1. At the onset of series 2 (days 1 to 3), P(ET(CO2)) was significantly lower and SaO2 was significantly higher than those on day 1 during series 1. These results suggest that humans who have had previous hypoxic exposure adapt sooner to hypoxic condition due to an increase in the magnitude of hyperventilation in the first few days of a series of reexposures to hypoxia.
journal_name
High Alt Med Bioljournal_title
High altitude medicine & biologyauthors
Katayama K,Fujita H,Sato K,Ishida K,Iwasaki K,Miyamura Mdoi
10.1089/ham.2005.6.50keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
50-9issue
1eissn
1527-0297issn
1557-8682journal_volume
6pub_type
临床试验,杂志文章abstract：:The present study reports the possible role of oxidative stress and inflammation (role of nuclear factor, NFkB) in hypoxia-induced transvascular leakage in brain of rats. The rats were exposed to a simulated altitude of 25,000 ft for different durations: 0, 3, 6, 12, 24, and 48h. Brain water content, transvascular lea...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2009.1057
更新日期：2010-10-01 00:00:00
abstract：:We describe the case of a 38-year-old man who presented with bilateral retinal detachments following a trek in Tibet during which time he took acetazolamide for prophylaxis of acute mountain sickness (AMS). This is the first time that retinal detachment has been described following a sojourn to high altitude. Acetazol...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2007.1026
更新日期：2007-01-01 00:00:00
abstract：:Exposure to hypoxic environments is associated with decreased arterial oxygen saturation and increased pulmonary artery pressures. Ischemic preconditioning of an extremity (IPC) is a procedure that stimulates vasoactive and inflammatory pathways that protect remote organ systems from ongoing or future ischemic injury....
journal_title：High altitude medicine & biology
pub_type： 杂志文章,随机对照试验
doi：10.1089/ham.2013.1137
更新日期：2014-06-01 00:00:00
abstract：:Painschab, Matthew S., Gary E. Malpartida, Victor G. Davila-Roman, Robert H. Gilman, Todd M. Kolb, Fabiola Leon-Velarde, J. Jaime Miranda, and William Checkley. Association between serum concentrations of hypoxia inducible factor responsive proteins and excessive erythrocytosis in high altitude Peru. High Alt Med Biol...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2014.1086
更新日期：2015-03-01 00:00:00
abstract：:Hypoxia can be defined as a reduction in available oxygen, whether in a whole organism or in a tissue or cell. It is a real life cause of pulmonary hypertension in humans both in terms of patients with chronic hypoxic lung disease and people living at high altitude. The effect of hypoxia on the pulmonary vasculature c...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/ham.2013.1016
更新日期：2013-06-01 00:00:00
abstract：:Ultrasonography is a noninvasive, reliable, repeatable, and inexpensive technology that has dramatically changed the practice of medicine. The clinical use of portable ultrasound devices has grown tremendously over the last 10 years in the fields of intensive care, emergency medicine, and anesthesiology. In this revie...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/ham.2018.0121
更新日期：2019-06-01 00:00:00
abstract：:Appointing physiological function to specific genetic determinants requires a systems physiologist to consider ways of assessing precise phenotypic mechanisms. The integration of ventilation, metabolism and thermoregulation, for example, is very complex and may differ among small and large mammalian species. This chal...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/152702901750265297
更新日期：2001-07-01 00:00:00
abstract：:Acetazolamide is used to prevent acute mountain sickness (AMS). We assessed efficacy and harm of acetazolamide for the prevention of AMS, and tested for dose-responsiveness. We systematically searched electronic databases (until April 2011) for randomized trials comparing acetazolamide with placebo for the prevention ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,meta分析,评审
doi：10.1089/ham.2011.1084
更新日期：2012-06-01 00:00:00
abstract：:This study was conducted to investigate the role of the L-type calcium channel in the cardioprotection afforded by chronic intermittent hypobaric hypoxia (CIHH). Rats were exposed to CIHH for 28 days (CIHH28) or 42 days (CIHH42), respectively, before their ventricular myocytes were isolated for electrophysiological st...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2009.1011
更新日期：2010-04-01 00:00:00
abstract：: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 ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/ham.2018.0036
更新日期：2018-12-01 00:00:00
abstract：: Background: Platelets are the key factor in primary hemostasis. It has been shown that chronic altitude exposure increases platelets' aggregability. Nevertheless, data about acute effects and the underlying mechanisms are sparse. Methods: ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2018.0112
更新日期：2019-09-01 00:00:00
abstract：:The efficacy and safety of intermittent hypoxia training (IHT) were investigated in healthy, 60- to 74-yr-old men. Fourteen men (Gr 1) who routinely exercised daily for 20 to 30 min were compared with 21 (Gr 2) who avoided exercise. Their submaximal work-load power values before the IHT training were 94 +/- 3.7 and 66...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2007.1053
更新日期：2008-04-01 00:00:00
abstract：:Hypoxemia is a major life-threatening complication of childhood pneumonia. The threshold points for hypoxemia vary with altitude. However, few published data describe that normal range of variation. The purpose of this study was to establish reference values of normal mean Sao(2) levels and an approximate cutoff point...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2009.1094
更新日期：2011-04-01 00:00:00
abstract：:Acute altitude exposure may lead to acute mountain sickness (AMS). Increased awareness of altitude-related health hazards in trekkers may accompany a decrease in AMS prevalence. We compared awareness and AMS prevalence in trekkers in two cohorts on an altitude trek up to 5400 m and assessed risk factors for AMS by rep...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2004.5.410
更新日期：2004-01-01 00:00:00
abstract：:Ha, Hoehun. Geographic variation in mentally unhealthy days: air pollution and altitude perspectives. High Alt Med Biol. 18:258-266, 2017. BACKGROUND:Mental health incorporates our emotional, psychological, and social well-being and it is critical at each phase of life, from youth and preadulthood through adulthood. ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2016.0137
更新日期：2017-09-01 00:00:00
abstract：:The aim was to establish scientifically supported recommendations for termination of cardiopulmonary resuscitation (CPR) in mountain rescue, which can be applied by physicians and nonphysicians. A literature search was performed; the results and recommendations were discussed among the authors, and finally approved by...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/ham.2011.1096
更新日期：2012-09-01 00:00:00
abstract：:Alarcón-Yaquetto, Dulce E., Lidia Caballero, and Gustavo F. Gonzales. Association between plasma N-acylethanolamides and high hemoglobin concentration in Southern Peruvian highlanders. High Alt Med Biol 18:322-329, 2017.-High-altitude (HA) hypoxia is a stressful condition endured by organisms through different mechani...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2016.0148
更新日期：2017-12-01 00:00:00
abstract：:Neurological disturbances may be present at high altitude independently of high altitude cerebral edema. We report here the case of a patient who experienced for the first time generalized seizures after spending a night at an altitude of 5200 m, with no preceding symptoms of acute mountain sickness. An initial CT sca...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2006.7.81
更新日期：2006-04-01 00:00:00
abstract：:Álvarez-Herms, Jesús, Sonia Julià-Sánchez, Hannes Gatterer, Francisco Corbi, Gines Viscor, and Martin Burtscher. Effects of a single power strength training session on heart rate variability when performed at different simulated altitudes. High Alt Med Biol. 21:292-296, 2020. Background: ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2020.0014
更新日期：2020-09-01 00:00:00
abstract：:Allergies and adverse reactions to sulfonamide medications are quite common. Two distinct categories of drugs are classified as sulfonamides: antibiotics and nonantibiotics. The two groups differ in their chemical structure, use, and the rate at which adverse reactions occur. Cross-reactivity between the two groups ha...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/ham.2010.1051
更新日期：2010-01-01 00:00:00
abstract：: Aims: Psychotic symptoms during exposure to high altitude (HA) have been linked to accidents or near accidents on the mountains. It is thus of great importance to directly identify psychotic symptoms in individuals who are exposed to HA quickly and reliably on the mountain...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2019.0009
更新日期：2019-12-01 00:00:00
abstract：:Since the first ascent of Mont Blanc by Jacques Balmat and Dr. Michel-Gabriel Paccard in 1786, numerous scientific events have taken place on the highest peak of Europe. Horace Benédict de Saussure, since his first ascent in 1787, made numerous observations on barometric pressure, temperature, geology, and mountain si...
journal_title：High altitude medicine & biology
pub_type： 历史文章,杂志文章
doi：10.1089/152702901750067936
更新日期：2001-04-01 00:00:00
abstract：:Acute mountain sickness (AMS) is a common condition in individuals who travel to altitudes over 2000 m. While AMS is an important public health problem, no measurements can reliably support or predict the diagnosis with any degree of confidence. We therefore set out to study whether pulse oximetry data are associated ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2004.5.341
更新日期：2004-10-01 00:00:00
abstract：:Chronic hypoxia has a profound effect on uterine artery adaptation to pregnancy. The present studies tested the hypothesis that pregnant kinase C (PKC) differentially regulates alpha(1)-adrenoceptor-mediated contractions and Ca(2+) sensitivity in the uterine arteries of nonpregnant and pregnant sheep acclimatized to h...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2009.1076
更新日期：2010-07-01 00:00:00
abstract：:Keyes, Linda E., Thomas Douglas Sallade, Charles Duke, Jennifer Starling, Alison Sheets, Sushil Pant, David S. Young, David Twillman, Nirajan Regmi, Benoit Phelan, Purshotam Paudel, Matthew McElwee, Luke Mather, Devlin Cole, Theodore McConnell, and Buddha Basnyat. Blood pressure and altitude: an observational cohort s...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2017.0001
更新日期：2017-09-01 00:00:00
abstract：: Background: Perfusion of intrapulmonary arteriovenous anastomoses (IPAVA) is increased during exercise and in hypoxia and is associated with variations in oxygen saturation (SPO2), resulting in blood bypassing the pulmonary microcirculation. Sildenafil is a pulmonary vasod...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,随机对照试验
doi：10.1089/ham.2019.0051
更新日期：2019-12-01 00:00:00
abstract：:Li, Zongbin, Jun Guo, Chunwei Liu, Yajun Shi, Yang Li, Jinli Wang, Dandan Li, Jing Wang, and Yundai Chen. Compound Danshen Dripping Pill promotes adaptation to acute high-altitude exposure. High Alt Med Biol. 21:258-264, 2020. Background: In this study, we aimed to investi...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2019.0126
更新日期：2020-09-01 00:00:00
abstract：:The influence of oxygen pressure on placental and villous vascular development is reviewed and considered relative to the natural experiment afforded by residence at high altitude. Data obtained from normal high altitude pregnancies are compared with those from IUGR and preeclampsia, conditions believed to be caused b...
journal_title：High altitude medicine & biology
pub_type： 杂志文章,评审
doi：10.1089/152702903322022785
更新日期：2003-07-01 00:00:00
abstract：:A variety of neurological disorders other than high altitude cerebral edema have been described at high altitude. This report documents isolated facial and hypoglossal nerve palsies that occurred in two travellers at high altitude in the Nepal Himalaya. The possible pathophysiological mechanisms of these neurological ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/152702901750265396
更新日期：2001-07-01 00:00:00
abstract：:Jiang, Tao, Liping Zhao, Yanbo Yin, Huiqian Yu, and Qingzhong Li. Evaluation of middle ear function by tympanometry and the influence of lower barometric pressure at high altitude. High Alt Med Biol 00:000-000, 2020. Objective: To evaluate middle ear function in residents ...
journal_title：High altitude medicine & biology
pub_type： 杂志文章
doi：10.1089/ham.2020.0042
更新日期：2020-12-31 00:00:00
