Abstract：
OBJECTIVE:The purposes of this experiment were to determine the repeatability of acute mountain sickness (AMS), AMS symptoms, and physiological responses across 2 identical hypoxic exposures. METHODS:Subjects (n = 25) spent 3 nights at simulated altitude in a normobaric hypoxia chamber: twice at a partial pressure of inspired oxygen (PIO2) of 90mmHg (4000 m equivalent; "hypoxia") and once at a PIO2 of 132 mmHg (1000 m equivalent; "sham") with 14 or more days between exposures. The following variables were measured at hours 0 and 12 of each exposure: AMS severity (ie, Lake Louise score [LLS]), AMS incidence (LLS ≥3), heart rate, oxygen saturation, blood pressure, and the fraction of exhaled nitric oxide. Oxygen saturation and heart rate were also measured while subjects slept. RESULTS:The incidence of AMS was not statistically different between the 2 exposures (84% vs 56%, P > .05), but the severity of AMS (ie, LLS) was significantly lower on the second hypoxic exposure (mean [SD], 3.1 [1.8]) relative to the first hypoxic exposure (4.8 [2.3]; P < .001). Headache was the only AMS symptom to have a significantly greater severity on both hypoxic exposures (relative to the sham exposure, P < .05). Physiological variables were moderately to strongly repeatable (intraclass correlation range 0.39 to 0.86) but were not associated with AMS susceptibility (P > .05). CONCLUSIONS:The LLS was not repeatable across 2 identical hypoxic exposures. Increased familiarity with the environment (not acclimation) could explain the reduced AMS severity on the second hypoxic exposure. Headache was the most reliable AMS symptom.
journal_name
Wilderness Environ Medjournal_title
Wilderness & environmental medicineauthors
MacInnis MJ,Koch S,MacLeod KE,Carter EA,Jain R,Koehle MS,Rupert JLdoi
10.1016/j.wem.2013.11.007subject
Has Abstractpub_date
2014-06-01 00:00:00pages
143-51issue
2eissn
1080-6032issn
1545-1534pii
S1080-6032(13)00350-5journal_volume
25pub_type
杂志文章abstract：:This article describes 3 incidents in which therapeutic or experimental warming of cold individuals caused first- to third-degree burns to the skin. Mechanisms for these injuries are considered. We conclude that active external rewarming of the trunk of a cold patient in the field can be administered safely and burn r...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2019.06.005
更新日期：2019-12-01 00:00:00
abstract：OBJECTIVE:We aimed to ascertain risk factors for acute mountain sickness (AMS) in miners exposed to chronic intermittent high altitude conditions. METHODS:All new hires (2009-2012) for mine employment (4000 m above sea level) were followed up for 12 months after first ascent. Demographics, physiologic data, and cigare...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2014.10.006
更新日期：2015-06-01 00:00:00
abstract：OBJECTIVE:To measure afterdrop and rewarming in subjects placed in a hypothermia wrap immediately after extrication from 60 minutes of snow burial. METHODS:We measured esophageal core body temperature (Tes) in 6 subjects buried in compacted snow (mean density 39%) for up to 60 minutes at an altitude of 2450 m while br...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2010.06.007
更新日期：2010-09-01 00:00:00
abstract：INTRODUCTION:Finger growth plate injuries are the most common injury among youth climbers, and the association between these injuries and speed climbing, a mandatory discipline in the 2021 Olympics, has not been examined previously. Our primary purpose was to examine the demographic and training characteristics of adol...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2020.06.008
更新日期：2020-12-01 00:00:00
abstract：OBJECTIVE:Olfactory function, a cognitive impairment biomarker, was evaluated in mountain ultramarathon (MUM) runners during the Tor des Géants race (332.5 km with an overall altitude gain of 24,000 m; altitude range 330-3296 m above the sea). METHODS:An Odor Identification Test was administered before (T0; n = 53), a...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2015.11.013
更新日期：2016-03-01 00:00:00
abstract：:A 67-year-old woman presented to a community emergency department in Orange County, CA, after she was stung by a scorpion identified as Centruroides limbatus from Central America. She developed local pain and systemic symptoms, including parasthesias, flushing, hypertension, and wheezing. Envenomation by this genus of...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(1999)010[0161:ebtslo]2.3.co;2
更新日期：1999-10-01 00:00:00
abstract：OBJECTIVE:Portable electronic devices play an important role in the management of type 1 diabetes mellitus. Electromagnetic interference from electronic devices has been shown to impair the function of an avalanche transceiver in search mode (but not in transmitting mode). This study investigates the influence of elect...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2014.12.016
更新日期：2015-06-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to examine the retention of wilderness first aid (WFA) knowledge, self-efficacy beliefs, and skills over time in a sample of WFA course participants. METHODS:Seventy-two open enrollment (volunteer) WFA course participants were assessed at 4 months, 8 months, or 12 months after t...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2012.04.005
更新日期：2012-09-01 00:00:00
abstract：INTRODUCTION:Grand Canyon National Park has seen an increase in visitors traversing the canyon from rim to rim (R2R) in a single day. R2R hikers travel over 33.8 km (21 mi) over 3300 m (11,000 ft) of elevation change and endure large temperature changes. Grand Canyon emergency medical service providers provide emergenc...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2018.08.001
更新日期：2019-03-01 00:00:00
abstract：:We report a case of survival of a completely buried avalanche victim after being located with the radar-based RECCO Rescue System. In the winter of 2015, 2 off-piste skiers were completely buried in an avalanche near the secured ski area in Baqueira Beret, Spain. The first victim was located with the RECCO Rescue Syst...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2016.02.004
更新日期：2016-06-01 00:00:00
abstract：OBJECTIVE:Little is known about health care provider interest, knowledge, and beliefs regarding the health effects of human-induced environmental degradation (HIED). A survey was created and distributed to better characterize health provider beliefs about the adverse health effects of HIED. METHODS:An invitation to pa...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/08-WEME-OR-222R1.1
更新日期：2009-10-01 00:00:00
abstract：:A tool that can differentiate ischemic stroke from other neurological conditions (eg, hemorrhagic stroke, high-altitude cerebral edema) in the field could enable more rapid thrombolysis when appropriate. The resources (eg, an MRI or CT scanner) to investigate stroke at high altitude may be limited, and hence a portabl...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2010.10.007
更新日期：2011-03-01 00:00:00
abstract：:Stingray envenomation is a common occurrence. X-ray evaluation of stingray wounds is an unnecessarily misunderstood diagnostic concept. We present the case of a patient stung by a stingray with a prolonged and complicated course and permanent disability due to a retained barb. The patient had undergone multiple medica...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2015.03.006
更新日期：2015-09-01 00:00:00
abstract：:Risk of injury in cold environments is related to a combination of athlete preparedness, preexisting medical conditions, and the body's physiologic response to environmental factors, including ambient temperature, windchill, and wetness. The goal of this section is to decrease the risk of hypothermia, frostbite, and n...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2015.09.006
更新日期：2015-12-01 00:00:00
abstract：:As part of an emergency medical system protocol, national park service rangers certified at the level of an emergency medical technician-basic (EMT-B) are taught to recognize and treat high-altitude pulmonary edema and high-altitude cerebral edema. In Sequoia and Kings Canyon National Parks, this is done with the assi...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2004)15[198:uotgbb]2.0.co;2
更新日期：2004-10-01 00:00:00
abstract：:During historic, as well as more recent, conflicts, most combat casualties who die from their injuries do so in the prehospital setting. Although many of the injuries incurred by these casualties are nonsurvivable, a number of injuries are still potentially survivable. Of those injuries that are potentially survivable...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章,评审
doi：10.1016/j.wem.2016.11.007
更新日期：2017-06-01 00:00:00
abstract：INTRODUCTION:Most recreational whitewater fatalities are caused by fixed underwater entrapment or by "flush drowning," an obscure term frequently associated with high-volume rivers, continuous rapids, cold water, and a lack of prolonged underwater entrapment. Although entrapment drowning is typically associated with su...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2019.09.006
更新日期：2020-03-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to test the hypothesis that polymorphisms in the endothelial PAS domain protein 1 (EPAS1) gene are associated with the susceptibility to high altitude pulmonary edema (HAPE) in Han Chinese. METHODS:This study enrolled 153 HAPE patients (HAPE-p), matched with Han Chinese resistan...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2013.05.006
更新日期：2013-12-01 00:00:00
abstract：:Puerto Rico (PR) is home to 10 indigenous species of snake. Alsophis portorricensis has traditionally been considered harmless. In 1961, Hageman classified A portorricensis as somewhere between "venomous" and "nonvenomous." In 1966, Heatwole and Banuchi reported the only case found in the literature of a "venomous" bi...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2010.07.001
更新日期：2010-12-01 00:00:00
abstract：BACKGROUND:Minimal data exist regarding the activity, membership, training, and medical oversight of search and rescue (SAR) teams. OBJECTIVE:Our objective was to describe these characteristics in the Intermountain West SAR organizations. METHODS:A contact list was generated and electronic surveys were sent to SAR of...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2013.08.002
更新日期：2013-12-01 00:00:00
abstract：:Exposure to and consumption of brackish water are associated with an elevated risk of infection, hypernatremia, and hypothermia. Minimal data exist to support the diagnosis and treatment of patients with long-term brackish water exposure. We present a case of a patient who spent 5 to 10 d semisubmerged in the Elizabet...
journal_title：Wilderness & environmental medicine
pub_type：
doi：10.1016/j.wem.2020.04.003
更新日期：2020-09-01 00:00:00
abstract：:Treating skin disorders in wilderness settings is often challenging. In this report we describe common skin conditions affecting the feet of river runners on the Colorado River in Grand Canyon National Park. These conditions are frequently referred to by river runners with a catchall term, "tolio." Several skin disord...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2019.09.003
更新日期：2020-03-01 00:00:00
abstract：OBJECTIVE:Winter sports continue to be a popular form of recreation, but few studies have focused on serious injuries. The objectives of this study were to evaluate the major morbidity associated with downhill skiing, snowboarding, and sledding and to determine the incidence of serious injuries sustained while downhill...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2002)013[0245:ssasii]2.0.co;2
更新日期：2002-01-01 00:00:00
abstract：INTRODUCTION:Sport helmet effectiveness in preventing traumatic brain injury (TBI) has been repeatedly questioned. This study assesses the effect of helmet use on risk of TBI and other types of head injury (OTHI) in alpine sports. METHODS:From 2012 to 2014, data on the injured population were collected by physicians i...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2017.11.007
更新日期：2018-06-01 00:00:00
abstract：:Combat operations necessitate bold thought and afford the opportunity to rapidly evolve and improve trauma care. The development and maturation of Tactical Combat Casualty Care (TCCC) is an important example of a critical process improvement strategy that reduced mortality in high-threat combat-related trauma. The Com...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章,评审
doi：10.1016/j.wem.2016.11.008
更新日期：2017-06-01 00:00:00
abstract：:Teaching emergency procedural skills in a wilderness setting can be logistically challenging. To teach these skills as part of a wilderness medicine elective for medical students, we designed an outdoor simulation session with low-fidelity models. The session involved 6 stations in which procedural skills were taught ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2013.11.001
更新日期：2014-03-01 00:00:00
abstract：:Exercise-associated hyponatremia (EAH) is defined by a serum or plasma sodium concentration below the normal reference range of 135 mmol/L that occurs during or up to 24 hours after prolonged physical activity. It is reported to occur in individual physical activities or during organized endurance events conducted in ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章,实务指引
doi：10.1016/j.wem.2014.08.009
更新日期：2014-12-01 00:00:00
abstract：OBJECTIVE:Our objective was to determine the incidence of acute mountain sickness (AMS) and the cardiorespiratory responses, in children and their parents, after rapid ascent to 3500 m. The sample population was composed of children and their parents who ascended within 24 hours from Arica (sea level) to Putre (3500 m)...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/06-WEME-BR-084.1
更新日期：2008-01-01 00:00:00
abstract：BACKGROUND:High altitude pulmonary edema (HAPE) is a potentially deadly disease associated with exposure to altitudes greater than 3000 m. Individuals who have previously experienced HAPE are at a significantly higher risk of recurrence, suggesting an underlying genetic component to HAPE pathogenesis. In a previous nuc...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.wem.2012.03.007
更新日期：2012-09-01 00:00:00
abstract：OBJECTIVE:Helicopters are commonly used in search and rescue operations, and accidents have occurred during helicopter search and rescue (HSAR) missions. The purposes of this study were to investigate whether the HSAR accident rate in the United States could be determined and whether any common contributing factors or ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2015.08.001
更新日期：2015-12-01 00:00:00
