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https://www.readbyqxmd.com/read/28553787/quality-of-life-trajectories-predict-mortality-in-older-men
#1
Philip D St John, Depeng Jiang, Robert B Tate
OBJECTIVE: To describe quality of life trajectories of older men over a 10-year time frame in mental and physical health domains, and to determine if these trajectories predict death over a subsequent 9-year period. METHOD: A cohort study of Royal Canadian Air Force aircrew veterans. We used Short Form-36 (SF-36) measures of mental and physical functioning collected prospectively at six time points between 1996 to 2006 (734 men with a mean age of 85.5 [ SD 3.0] years in 2006) to determine trajectories...
October 1, 2016: Journal of Aging and Health
https://www.readbyqxmd.com/read/28539143/incidence-of-g-induced-loss-of-consciousness-and-almost-loss-of-consciousness-in-the-royal-air-force
#2
Ellen Slungaard, Judith McLeod, Nicholas D C Green, Amit Kiran, Di J Newham, Stephen D R Harridge
INTRODUCTION: Exposure to sustained +Gz acceleration with inadequate G protection can result in G-induced loss of consciousness (G-LOC) or almost loss of consciousness (A-LOC). The UK Royal Air Force (RAF) last conducted a survey of G-LOC within their military aircrew in 2005 with interventions subsequently introduced. The aim of this study was to repeat the 2005 survey in order to evaluate the impact of those interventions. METHODS: An anonymous questionnaire requesting details of G-LOC and A-LOC events was mailed to all RAF pilots (N = 1878) and weapons systems operators (WSOs) (N = 473), irrespective of aircraft currently flown...
June 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28518008/latent-presentation-of-decompression-sickness-after-altitude-chamber-training-in-an-active-duty-flier
#3
James Gentry, Juan Rango, Jianzhong Zhang, Shane Biedermann
BACKGROUND: Decompression sickness (DCS) is a potential danger and risk for both divers and aircrew alike. DCS is also a potential side effect of altitude (hypobaric) chamber training as well and can present long after training occurs. Literature review shows that altitude chamber induced DCS has approximately a 0.25% incidence. CASE REPORT: A 32-yr-old, active duty military member developed symptoms of DCS 3 h after his hypobaric chamber training. Unfortunately, he did not seek treatment for DCS until 48 h after the exposure...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28518007/patient-centric-side-effect-risk-assessment-for-medications-used-during-aeromedical-evacuations
#4
Shana A Huntsberger, William P Butler, Richard R Chapleau
BACKGROUND: The U.S. Air Force performs more than 6000 aeromedical transport flights annually, both internationally and domestically. Many of these flights include patients requiring pain relief medications. The risk of side effects from such medications administered at altitude is unknown, but understanding these risks is vital when selecting the safest pain management strategies to achieve optimal postflight outcomes. METHODS: Using an evidence-based medication side effect risk assessment model, we compared our patient-centric approach to an aircrew-centric approach using medications approved for use in U...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28417832/color-vision-in-color-display-night-vision-goggles
#5
Eric P Liggins, William P Serle
INTRODUCTION: Aircrew viewing eyepiece-injected symbology on color display night vision goggles (CDNVGs) are performing a visual task involving color under highly unnatural viewing conditions. Their performance in discriminating different colors and responding to color cues is unknown. METHODS: Experimental laboratory measurements of 1) color discrimination and 2) visual search performance are reported under adaptation conditions representative of a CDNVG. Color discrimination was measured using a two-alternative forced choice (2AFC) paradigm that probes color space uniformly around a white point...
May 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28355699/-study-on-the-health-effect-of-the-occupational-stress-in-aircrew
#6
L P Zhou, H E Tian, L L Liu, L Ma, H Zhang, Q D Zhang, X Y Zhu, H B Zhu
Objective: To explore the relationship between occupational stress and physiological and biochemical indexes, to research the health effect of the occupational stress in aircrew. Methods: 450 aircrews were conducted with the OSI-R questionnaire survey, examine the level of blood pressure, blood routine, ALT and UA. Results: The concentration of HB was positively related with task conflict and entertainment and leisure (β=0.262 and 0.106, both P<0.05) , while heavy task, task discomfort and psychological stress reactions were negatively related with HB (β=-0...
February 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28323588/virtual-reality-applications-for-stress-management-training-in-the-military
#7
REVIEW
Federica Pallavicini, Luca Argenton, Nicola Toniazzi, Luciana Aceti, Fabrizia Mantovani
INTRODUCTION: Stress Management Training programs are increasingly being adopted in the military field for resilience empowerment and primary stress prevention. In the last several years, advanced technologies (virtual reality in particular) have been integrated in order to develop more innovative and effective stress training programs for military personnel, including soldiers, pilots, and other aircrew professionals. This systematic review describes experimental studies that have been conducted in recent years to test the effectiveness of virtual reality-based Stress Management Training programs developed for military personnel...
December 1, 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28265455/the-prevalence-of-medical-symptoms-in-military-aircrew
#8
Barak Gordon, Yifat Erlich, Erez Carmon
BACKGROUND: The prevalence of medical symptoms in aviators has not been described in the medical literature. METHODS: An anonymous questionnaire was handed to all Israeli Air Force aviators who went through the routine yearly examination. Because only two women filled the questionnaire, we excluded them. The questionnaire contained a list of 49 symptoms and the aviators were asked to mark symptoms that were present in the last month before the examination as well as age, estimated weekly flying hours, military service status (reserve or career) and type of aircraft (jet-fighter, helicopter or transport)...
2017: Disaster and Military Medicine
https://www.readbyqxmd.com/read/28253197/assessment-of-the-skin-dose-for-aircrew
#9
Matthias M Meier, Daniel Matthiä
Epidemiological studies are a useful instrument for investigating the influence of environmental factors on human health. In this context, the determination and quantification of the corresponding exposure is a demanding challenge. With regard to the investigation of the potential health effects in aircrew due to cosmic radiation, their occupational exposure at aviation altitudes is usually assessed in terms of the radiation protection quantity effective dose, which is stored in and available from official dose registers in many countries...
March 2, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28095953/reported-back-pain-in-army-aircrew-in-relation-to-airframe-gender-age-and-experience
#10
Amanda M Kelley, Jason MacDonnell, Deahndra Grigley, John Campbell, Steven J Gaydos
INTRODUCTION: Back pain has remained an issue of significance among aircraft crewmembers for decades, occurring in the majority of military helicopter pilots with potential deleterious effects on performance, safety, and operational readiness. This exploratory, correlational survey study was designed to evaluate the presence of patterns and relationships that may require further examination to understand causal factors. METHODS: The study population consisted of U...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28095950/ct-coronary-angiography-vs-coronary-artery-calcium-scoring-for-the-occupational-assessment-of-military-aircrew
#11
COMPARATIVE STUDY
Iain Parsons, Chris Pavitt, Rebecca Chamley, Jo d'Arcy, Ed Nicol
INTRODUCTION: To ensure flight safety military aircrew undergo regular clinical and occupational assessment. Coronary artery calcium scoring (CACS) has been established as an imaging modality to noninvasively assess coronary artery disease (CAD). CT coronary angiography (CTCA) potentially offers a more accurate assessment of CAD, but has not been formally assessed in military aircrew. This retrospective cohort study is designed to compare the theoretical differences in downstream investigations and occupational outcomes in aircrew with suspected CAD comparing CTCA with existing CACS pathways...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28074016/cari-7a-development-and-validation
#12
Kyle Copeland
Aircrew members can be exposed to higher annual doses of natural ionizing radiation than members of the general population in most parts of the world. The principal ionizing radiation to which they are exposed is galactic cosmic radiation (GCR). Among the particles present in the primary spectrum are heavy ions: relativistic nuclei of lithium and heavier elements. These ions have very high radiation weighting factors and can contribute significantly to the effective dose at altitudes above the Pfotzer maximum...
January 10, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27923417/mechanisms-of-memory-dysfunction-during-high-altitude-hypoxia-training-in-military-aircrew
#13
Daniel A Nation, Mark W Bondi, Ellis Gayles, Dean C Delis
OBJECTIVES: Cognitive dysfunction from high altitude exposure is a major cause of civilian and military air disasters. Pilot training improves recognition of the early symptoms of altitude exposure so that countermeasures may be taken before loss of consciousness. Little is known regarding the nature of cognitive impairments manifesting within this critical window when life-saving measures may still be taken. Prior studies evaluating cognition during high altitude simulation have predominantly focused on measures of reaction time and other basic attention or motor processes...
January 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27886995/cosmic-radiation-exposure-of-future-hypersonic-flight-missions
#14
L Koops
Cosmic radiation exposure in air traffic grows with flight altitude, geographical latitude and flight time. For future high-speed intercontinental point-to-point travel, the trade-off between reduced flight time and enhanced dose rate at higher flight altitudes is investigated. Various representative (partly) hypersonic cruise missions are considered and in dependence on solar activity the integral route dose is calculated for envisaged flight profiles and trajectories. Our results are compared to those for corresponding air connections served by present day subsonic airliners...
June 15, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27849510/g-induced-visual-symptoms-in-a-military-helicopter-pilot
#15
Terry W McMahon, David G Newman
INTRODUCTION: Military helicopters are increasingly agile and capable of producing significant G forces experienced in the longitudinal (z) axis of the body in a head-to-foot direction (+Gz). Dehydration and fatigue can adversely affect a pilot's +Gz tolerance, leading to +Gz-induced symptomatology occurring at lower +Gz levels than expected. The potential for adverse consequences of +Gz exposure to affect flight safety in military helicopter operations needs to be recognized. This case report describes a helicopter pilot who experienced +Gz-induced visual impairment during low-level flight...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27798410/comparison-of-the-effective-dose-rate-to-aircrew-members-using-hybrid-computational-phantoms-in-standing-and-sitting-postures
#16
M C Alves, D C Galeano, W S Santos, Choonsik Lee, Wesley E Bolch, John G Hunt, A X da Silva, A B Carvalho
Aircraft crew members are occupationally exposed to considerable levels of cosmic radiation at flight altitudes. Since aircrew (pilots and passengers) are in the sitting posture for most of the time during flight, and up to now there has been no data on the effective dose rate calculated for aircrew dosimetry in flight altitude using a sitting phantom, we therefore calculated the effective dose rate using a phantom in the sitting and standing postures in order to compare the influence of the posture on the radiation protection of aircrew members...
December 2016: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/27683875/subjective-health-complaints-work-related-stress-and-self-efficacy-in-norwegian-aircrew
#17
M L Omholt, T H Tveito, C Ihlebæk
Background: The European civilian aviation industry has undergone major changes in the last decade. Despite this, there is little knowledge about work-related stress and subjective health complaints (SHCs) affecting Norwegian aircrew. Aims: To investigate the relationships between work-related stress, self-efficacy and SHCs in commercial aircrew in Norway and to explore differences between cockpit and cabin crew. Methods: Aircrew members from the three major airlines operating from Norway completed an electronically distributed questionnaire...
March 1, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/27651568/radiological-risk-assessment-of-cosmic-radiation-at-aviation-altitudes-a-trip-from-houston-intercontinental-airport-to-lagos-international-airport
#18
Paschal Ikenna Enyinna
Radiological risk parameters associated with aircrew members traveling from Houston Intercontinental Airport to Lagos International Airport have been computed using computer software called EPCARD (version 3.2). The mean annual effective dose of radiation was computed to be 2.94 mSv/year. This result is above the standard permissible limit of 1 mSv/year set for the public and pregnant aircrew members but below the limit set for occupationally exposed workers. The Risk of cancer mortality and excess career time cancer risk computed ranged from 3...
July 2016: Journal of Medical Physics
https://www.readbyqxmd.com/read/27634698/metabolic-syndrome-in-military-aircrew-using-a-candidate-definition
#19
Sanjiv Sharma, A M Chandrashekar, Vishal Singh
INTRODUCTION: Prevalence of metabolic syndrome (MetS) in the Indian population varies from 31.6 to 41.1%. Indians, without being conventionally obese, but inherently insulin resistant, have higher risk of developing cardiovascular diseases and diabetes. Since military aircrew, belonging to the same ethnic pool, may reflect similar prevalence of MetS as the general Indian populace, this study was undertaken to find the prevalence of MetS among Indian military aircrew using one candidate definition...
September 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27634610/recurrence-of-neurological-deficits-in-an-f-a-18d-pilot-following-loss-of-cabin-pressure-at-altitude
#20
Tom Robinson, Jose S Evangelista, Emi Latham, Samir T Mukherjee, Andrew Pilmanis
INTRODUCTION: Supersonic, high altitude aviation places its pilots and aircrew in complex environments, which may lead to injury that is not easily diagnosed or simply treated. Decompression illness (either venous or arterial) and environmental conditions (e.g., abnormal gases and pressure) are the most likely adverse effects aircrew often face. Though symptomatic aircrew personnel may occasionally require hyperbaric oxygen treatment, it is rare to require more than one treatment before returning to baseline function...
August 2016: Aerospace Medicine and Human Performance
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