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Altitude illness

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https://www.readbyqxmd.com/read/29341860/risk-management-of-free-radicals-involved-in-air-travel-syndromes-by-antioxidants
#1
Jeum-Nam Kim, Byung-Mu Lee
Frequent air travelers and airplane pilots may develop various types of illnesses. The environmental risk factors associated with air travel syndromes (ATS) or air travel-related adverse health outcomes raised concerns and need to be assessed in the context of risk management and public health. Accordingly, the aim of the present review was to determine ATS, risk factors, and mechanisms underlying ATS using scientific data and information obtained from Medline, Toxline, and regulatory agencies. Additional information was also extracted from websites of organizations, such as the International Air Transport Association (IATA), International Association for Medical Assistance to Travelers (IAMAT), and International Civil Aviation Organization (ICAO)...
January 17, 2018: Journal of Toxicology and Environmental Health. Part B, Critical Reviews
https://www.readbyqxmd.com/read/29334635/the-effect-of-altitude-and-climate-on-the-suicide-rates-in-turkey
#2
Mahmut Asirdizer, Erhan Kartal, Yasin Etli, Ertugrul Tatlisumak, Orhan Gumus, Yavuz Hekimoglu, Sıddık Keskin
Suicide is one of the most important public health problems. There was an association between suicide and several factors such as psychiatric diseases and psychological characteristics, somatic illness, cultural, socioeconomic, familial, occupational and individual risk factors. Also, high altitude and climatic factors including high temperature, cloudiness, more sunshine and low rainfalls were defined as some of these risk factors in the literature. In this study, we aimed to investigate correlation between suicide rates and altitudes of all cities in Turkey and between suicide rates and climatic factors including Rainfall Activity Index, Winter Mean Temperatures, Summer Mean Temperatures and Temperature Difference between January and July previously defined by several authors in the broad series in Turkey...
January 4, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29332784/air-transport-of-a-patient-with-impending-cerebral-herniation-from-tension-pneumocephalus
#3
Etzer Augustin, Michael Karsy, Jim Bryan, Jian Guan, Richard H Schmidt
Tension pneumocephalus is a rare but dangerous complication of craniotomy, sinus surgery, and traumatic cranial injury. Compared with simple pneumocephalus, which often resolves spontaneously over the course of a few days, tension pneumocephalus tends to increase with ongoing cerebrospinal fluid leak and requires immediate neurosurgical treatment to prevent cerebral herniation. Air transport of patients with tension pneumocephalus for neurosurgical care entails a risk of neurologic worsening because of changes in ambient air pressure with altitude and cabin pressurization...
January 2018: Air Medical Journal
https://www.readbyqxmd.com/read/29296771/red-blood-cells-in-hemorrhagic-shock-a-critical-role-for-glutaminolysis-in-fueling-alanine-transamination-in-rats
#4
Julie A Reisz, Anne L Slaughter, Rachel Culp-Hill, Ernest E Moore, Christopher C Silliman, Miguel Fragoso, Erik D Peltz, Kirk C Hansen, Anirban Banerjee, Angelo D'Alessandro
Red blood cells (RBCs) are the most abundant host cell in the human body and play a critical role in oxygen transport and systemic metabolic homeostasis. Hypoxic metabolic reprogramming of RBCs in response to high-altitude hypoxia or anaerobic storage in the blood bank has been extensively described. However, little is known about the RBC metabolism following hemorrhagic shock (HS), the most common preventable cause of death in trauma, the global leading cause of total life-years lost. Metabolomics analyses were performed through ultra-high pressure liquid chromatography-mass spectrometry on RBCs from Sprague-Dawley rats undergoing HS (mean arterial pressure [MAP], <30 mm Hg) in comparison with sham rats (MAP, >80 mm Hg)...
July 25, 2017: Blood Advances
https://www.readbyqxmd.com/read/29202898/isolated-psychosis-during-exposure-to-very-high-and-extreme-altitude-characterisation-of-a-new-medical-entity
#5
Katharina Hüfner, Hermann Brugger, Eva Kuster, Franziska Dünsser, Agnieszka E Stawinoga, Rachel Turner, Iztok Tomazin, Barbara Sperner-Unterweger
BACKGROUND: Psychotic episodes during exposure to very high or extreme altitude have been frequently reported in mountain literature, but not systematically analysed and acknowledged as a distinct clinical entity. METHODS: Episodes reported above 3500 m altitude with possible psychosis were collected from the lay literature and provide the basis for this observational study. Dimensional criteria of the Diagnostic and Statistical Manual of Mental Disorders were used for psychosis, and the Lake Louise Scoring criteria for acute mountain sickness and high-altitude cerebral oedema (HACE)...
December 5, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/29183280/using-a-monitoring-and-evaluation-framework-to-improve-study-efficiency-and-quality-during-a-prospective-cohort-study-in-infants-receiving-rotavirus-vaccination-in-el-alto-bolivia-the-infant-nutrition-inflammation-and-diarrheal-illness-nidi-study
#6
Anna M Aceituno, Kaitlyn K Stanhope, Paulina A Rebolledo, Rachel M Burke, Rita Revollo, Volga Iñiguez, Parminder S Suchdev, Juan S Leon
BACKGROUND: Implementing rigorous epidemiologic studies in low-resource settings involves challenges in participant recruitment and follow-up (e.g., mobile populations, distrust), biological sample collection (e.g., cold-chain, laboratory equipment scarcity) and data collection (e.g., literacy, staff training, and infrastructure). This article describes the use of a monitoring and evaluation (M&E) framework to improve study efficiency and quality during participant engagement, and biological sample and data collection in a longitudinal cohort study of Bolivian infants...
November 28, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29177389/-between-the-acclimatization-to-high-altitude-the-medical-anthropology-and-the-civilizing-utopia-mapping-of-the-evolution-of-thought-of-carlos-monge-medrano-on-the-health-illness-process-of-andean-populations
#7
Juan P Murillo
The main objective of this study is to describe how the ideas of Carlos Monge respect to high altitude sickness developed and how these were being deployed in the framework of the discussions on the living conditions of indigenous populations in the period 1928-1963. I postulate that the form how the Monge's paradigm was proposed, the tensions produced by various alternative movements and the way these contradictions were resolved were central, both for the subsequent development of different scientific disciplines and for their different institutional expressions in Peru...
April 2017: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/29157337/simulated-high-altitude-helium-oxygen-diving
#8
Lu Shi, Yan-Meng Zhang, Katsuura Tetsuo, Zhong-Yuan Shi, Yi-Qun Fang, Petar J Denoble, Yang-Yang Li
BACKGROUND: Experience with commercial heliox diving at high altitude is limited. The purpose of this study was to evaluate the effects of acute high-altitude exposure on fitness to dive and the safety of decompression after heliox diving while using U.S. Navy heliox decompression tables with Cross correction. METHOD: Four professional male divers were consecutively decompressed in a hypo- and hyperbaric chamber to altitudes of 3000 m (9842.5 ft), 4000 m (13,123...
December 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29095325/charcot-marie-tooth-disease-1x-simulating-paraparetic-guillain-barre-syndrome
#9
Dimitrios Parissis, Panagiotis Ioannidis, Georgios Papadopoulos, Dimitrios Karacostas
X-linked Charcot-Marie-Tooth disease (CMT 1X) is the second most common form of inherited demyelinating neuropathy. It is established that patients suffering from CMT 1X can have episodes of hemiparesis, paraparesis, quadriparesis, ataxia, aphasia, and dysarthria, which can be fully reversible, and 'trigger' factors for these episodes are usually febrile illness, high altitudes, hyperventilation, and physical activity. We describe a 22-year-old patient with a history of viral infection and sleep deprivation who presented to our department because of acute difficulty in walking and neurophysiological findings suggesting Guillain-Barre syndrome...
November 2017: Neurologist
https://www.readbyqxmd.com/read/29046183/you-re-the-flight-surgeon
#10
(no author information available yet)
Pelligra S. You're the flight surgeon: decompression illness following altitude chamber exposure. Aerosp Med Hum Perform. 2017; 88(11):1052-1055.
November 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29020216/outpatient-management-of-children-with-world-health-organization-chest-indrawing-pneumonia-implementation-risks-and-proposed-solutions
#11
Eric D McCollum, Amy Sarah Ginsburg
This Viewpoints article details our recommendation for the World Health Organization Integrated Management of Childhood Illness guidelines to consider additional referral or daily monitoring criteria for children with chest indrawing pneumonia in low-resource settings. We review chest indrawing physiology in children and relate this to the risk of adverse pneumonia outcomes. We believe there is sufficient evidence to support referring or daily monitoring of children with chest indrawing pneumonia and signs of severe respiratory distress, oxygen saturation <93% (when not at high altitude), moderate malnutrition, or an unknown human immunodeficiency virus (HIV) status in an HIV-endemic setting...
October 16, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28982709/the-british-services-dhaulagiri-medical-research-expedition-2016-a-unique-military-and-civilian-research-collaboration
#12
Adrian Mellor, J Bakker-Dyos, M Howard, C Boos, M Cooke, E Vincent, P Scott, J O'Hara, S B Clarke, M Barlow, J Matu, K Deighton, N Hill, C Newman, R Cruttenden, D Holdsworth, D Woods
INTRODUCTION: High-altitude environments lead to a significant physiological challenge and disease processes which can be life threatening; operational effectiveness at high altitude can be severely compromised. The UK military research is investigating ways of mitigating the physiological effects of high altitude. METHODS: The British Service Dhaulagiri Research Expedition took place from March to May 2016, and the military personnel were invited to consent to a variety of study protocols investigating adaptation to high altitudes and diagnosis of high-altitude illness...
October 5, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28923144/in-flight-ultraviolet-radiation-on-commercial-airplanes
#13
Pascal Cadilhac, Marie-Christine Bouton, Monique Cantegril, Catherine Cardines, Alain Gisquet, Noël Kaufman, Michel Klerlein
INTRODUCTION: Epidemiological studies suggest that pilots and cabin crew have higher incidences and mortality rates of cutaneous malignant melanoma than those of the general population. Exposure to UV radiation is one of the main risk factors for this type of cancer. The aim of this study was to evaluate the level of UV radiation in an airliner in flight. METHODS: Measurements were taken with a three sensor-integrated electronics UV radiometer (A, B, and C) during 14 flights from July to October 2016...
October 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28923020/caretakers-understanding-of-malaria-use-of-insecticide-treated-net-and-care-seeking-behavior-for-febrile-illness-of-their-children-in-ethiopia
#14
Zewdie Birhanu, Yemane Ye-Ebiyo Yihdego, Delenasaw Yewhalaw
BACKGROUND: Local understandings of malaria and use of preventive measures-are critical factors in sustained control of malaria. This study assessed caretakers' knowledge on malaria, use of Long Lasting Insecticide Treated Nets (LLINs) and care-seeking behavior for their children's illness in different malaria transmission settings of Ethiopia. METHODS: Data were collected from 709 caretakers of children of 2-9 years of age during in 2016. A standard questionnaire was used to assess caretakers' perceptions of malaria, use of LLIN and care seeking behavior for febrile illness of children aged 2-9 years...
September 18, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28919307/a-journey-between-high-altitude-hypoxia-and-critical-patient-hypoxia-what-can-it-teach-us-about-compression-and-the-management-of-critical-disease
#15
M L Avellanas Chavala
High altitude sickness (hypobaric hypoxia) is a form of cellular hypoxia similar to that suffered by critically ill patients. The study of mountaineers exposed to extreme hypoxia offers the advantage of involving a relatively homogeneous and healthy population compared to those typically found in Intensive Care Units (ICUs), which are heterogeneous and generally less healthy. Knowledge of altitude physiology and pathology allows us to understanding how hypoxia affects critical patients. Comparable changes in mitochondrial biogenesis between both groups may reflect similar adaptive responses and suggest therapeutic interventions based on the protection or stimulation of such mitochondrial biogenesis...
September 14, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28910201/reentry-high-altitude-pulmonary-edema-in-the-himalayas
#16
Santosh Baniya, Christopher Holden, Buddha Basnyat
Baniya, Santosh, Christopher Holden, and Buddha Basnyat. Reentry high altitude pulmonary edema in the Himalayas. High Alt Med Biol. 18:425-427, 2017.-Reentry high altitude pulmonary edema (HAPE), a subset of HAPE, is a well recognized, life-threatening illness documented almost exclusively in the North and South Americans, who live at high altitude (>2500 m) and return to their homes after a brief sojourn of days to months at lower altitude. This phenomenon has not been reported in Sherpas or other people of Tibetan origin in Nepal or India...
December 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28828048/initial-evaluation-and-key-principles-of-critically-ill-pediatric-patient-aerial-transport
#17
Constanta Pick
Recent advances in more efficient communications, modern telemedicine systems, medical progress, better training of the medical professionals with the possibility of sub-specialisation has led to shorter transfer times in safer conditions of this and overall affording a better chance of survival. High altitude air transport has considerable implications on the respiratory system's efficiency. Caregiver selection is key in avoiding the dangers of debilitating altitude sickness on the medical team. Minimizing physiological or anatomical derangements and minimizing potential complications in the very small critically ill patients while achieving short transfer times are major objectives...
December 2016: Mædica
https://www.readbyqxmd.com/read/28810235/obesity-as-a-conditioning-factor-for-high-altitude-diseases
#18
Rocío San Martin, Julio Brito, Patricia Siques, Fabiola León-Velarde
Obesity, a worldwide epidemic, has become a major health burden because it is usually accompanied by an increased risk for insulin resistance, diabetes, hypertension, cardiovascular diseases, and even some kinds of cancer. It also results in associated increases in healthcare expenditures and labor and economic consequences. There are also other fields of medicine and biology where obesity or being overweight play a major role, such as high-altitude illnesses (acute mountain sickness, hypoxic pulmonary hypertension, and chronic mountain sickness), where an increasing relationship among these two morbid statuses has been demonstrated...
2017: Obesity Facts
https://www.readbyqxmd.com/read/28781177/impact-of-a-newly-constructed-motor-vehicle-road-on-altitude-illness-in-the-nepal-himalayas
#19
Jonathan Reisman, Dinesh Deonarain, Buddha Basnyat
OBJECTIVE: This study investigated the impact that motor vehicle travel along a newly constructed road has on altitude illness (including acute mountain sickness, high-altitude cerebral edema, and high-altitude pulmonary edema). The new road from Besisahar (760 m) to Manang (3540 m) in Nepal was completed in December 2014. METHODS: We enrolled all patients diagnosed with altitude illness at the Himalayan Rescue Association Manang clinic in fall 2016. Phi coefficients were calculated to test for an association between Nepali ethnicity and rapid ascent by motor vehicle...
August 3, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28720255/altitude-related-illnesses
#20
Roberto Alfonso Accinelli, Lidia Marianella López
No abstract text is available yet for this article.
July 15, 2017: Archivos de Bronconeumología
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