keyword
MENU ▼
Read by QxMD icon Read
search

Helicopters

keyword
https://www.readbyqxmd.com/read/28923147/idiopathic-syringomyelia-in-a-military-helicopter-pilot
#1
Anthony Schiemer
BACKGROUND: A syrinx is a fluid-filled cavity within the spinal cord. They can lead to a variety of symptoms, including limb weakness and back pain. Incidental finding of syringomyelia provides a challenge for clinicians due to the wide variety of possible symptoms. In military aviation, neurological findings in pilots can result in extensive investigation that can lead to potentially invasive management. Conversely, the potential for chronic progression of a spinal syrinx and subsequent neurological deterioration makes early identification critical...
October 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28923140/working-memory-capacity-and-surgical-performance-while-exposed-to-mild-hypoxic-hypoxemia
#2
Paul J Parker, Andrew J Manley, Ross Shand, John P O'Hara, Adrian Mellor
INTRODUCTION: Medical Emergency Response Team (MERT) helicopters fly at altitudes of 3000 m in Afghanistan (9843 ft). Civilian hospitals and disaster-relief surgical teams may have to operate at such altitudes or even higher. Mild hypoxia has been seen to affect the performance of novel tasks at flight levels as low as 5000 ft. Aeromedical teams frequently work in unpressurized environments; it is important to understand the implications of this mild hypoxia and investigate whether supplementary oxygen systems are required for some or all of the team members...
October 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28919287/active-fault-tolerant-control-based-on-interval-type-2-fuzzy-sliding-mode-controller-and-non-linear-adaptive-observer-for-3-dof-laboratory-helicopter
#3
Samir Zeghlache, Tarak Benslimane, Abderrahmen Bouguerra
In this paper, a robust controller for a three degree of freedom (3 DOF) helicopter control is proposed in presence of actuator and sensor faults. For this purpose, Interval type-2 fuzzy logic control approach (IT2FLC) and sliding mode control (SMC) technique are used to design a controller, named active fault tolerant interval type-2 Fuzzy Sliding mode controller (AFTIT2FSMC) based on non-linear adaptive observer to estimate and detect the system faults for each subsystem of the 3-DOF helicopter. The proposed control scheme allows avoiding difficult modeling, attenuating the chattering effect of the SMC, reducing the rules number of the fuzzy controller...
September 14, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28915898/physician-staffed-helicopter-emergency-medical-service-has-a-beneficial-impact-on-the-incidence-of-prehospital-hypoxia-and-secured-airways-on-patients-with-severe-traumatic-brain-injury
#4
Toni Pakkanen, Antti Kämäräinen, Heini Huhtala, Tom Silfvast, Jouni Nurmi, Ilkka Virkkunen, Arvi Yli-Hankala
BACKGROUND: After traumatic brain injury (TBI), hypotension, hypoxia and hypercapnia have been shown to result in secondary brain injury that can lead to increased mortality and disability. Effective prehospital assessment and treatment by emergency medical service (EMS) is considered essential for favourable outcome. The aim of this study was to evaluate the effect of a physician-staffed helicopter emergency medical service (HEMS) in the treatment of TBI patients. METHODS: This was a retrospective cohort study...
September 15, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28898557/improved-survival-for-rural-trauma-patients-transported-by-helicopter-to-a-verified-trauma-center-a-propensity-score-analysis
#5
Thein Hlaing Zhu, Lisa Hollister, Dazar Opoku, Samuel M Galvagno
OBJECTIVES: Recent studies using advanced statistical methods to control for confounders have demonstrated an association between helicopter transport (HT) vs. ground ambulance transport (GT) in terms of improved survival for adult trauma patients. The aim of this study was to apply a methodologically vigorous approach to determine if HT is associated with a survival benefit for when trauma patients are transported to a verified trauma center in a rural setting. METHODS: The ascertainment of trauma patients age ≥15 years (n=469 cases) by HT and (n=580 cases) by GT between 1999 and 2012 was restricted to the scene of injury in a rural area of 10 to 35 miles from the trauma center...
September 12, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28889866/helicopter-thermal-imaging-for-detecting-insect-infested-cadavers
#6
Jens Amendt, Sandra Rodner, Claus-Peter Schuch, Heinz Sprenger, Lars Weidlich, Frank Reckel
One of the most common techniques applied for searching living and even dead persons is the FLIR (Forward Looking Infrared) system fixed on an aircraft like e.g. a helicopter, visualizing the thermal patterns emitted from objects in the long-infrared spectrum. However, as body temperature cools down to ambient values within approximately 24h after death, it is common sense that searching for deceased persons can be just applied the first day post-mortem. We postulated that the insect larval masses on a decomposing body generate a heat which can be considerably higher than ambient temperatures for a period of several weeks and that such heat signatures might be used for locating insect infested human remains...
September 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28886788/logistical-concerns-for-prehospital-blood-product-use-by-air-medical-services
#7
REVIEW
Patrick Maher, Richard Utarnachitt, Max J Louzon, Roxann Gary, Nina Sen, John R Hess
Over the past few decades, reports have described favorable results from transfusion of blood products in helicopter EMS (HEMS). Nevertheless, the initiation of a HEMS transfusion program requires consideration of many factors, some unique to each clinical site. This paper describes our experience developing a HEMS transfusion program in an urban non-hospital based HEMS program with a history of long transport times. When considering blood use away from the hospital, major consideration must be given to safe storage and monitoring of blood products both on the ground and while in flight...
September 2017: Air Medical Journal
https://www.readbyqxmd.com/read/28886785/reducing-door-in-door-out-intervals-in-helicopter-st-segment-elevation-myocardial-infarction-interhospital-transfers
#8
Michael A Schneider, Jason T McMullan, Christopher J Lindsell, Kimberly W Hart, Diana Deimling, Debra Jump, Todd Davis, William R Hinckley
BACKGROUND: Many health systems rely on helicopter EMS (HEMS) to transfer ST-elevation myocardial infarction (STEMI) patients for percutaneous coronary intervention (PCI) to a hospital with a catheterization laboratory. Mortality rates increase with the time to reperfusion, so reducing delays is imperative. For interhospital STEMI transfers, the time spent in the initial hospital from arrival until departure (door-in to door-out interval or DIDO) should be minimized. OBJECTIVE: To evaluate the impact of a series of process improvements to reduce DIDO intervals for STEMI patients transferred via a hospital based HEMS program...
September 2017: Air Medical Journal
https://www.readbyqxmd.com/read/28886492/the-dynamics-of-prehospital-hospital-care-and-modes-of-transport-during-civil-conflict-and-terrorist-incidents
#9
S Celik, R Dursun, A Aycan, H Gönüllü, C Adanaş, M Eryılmaz, E Gönüllü, M E Akyol, S Keskin, C Güloğlu
OBJECTIVE: Prehospital and hospital care during incidents of mass violence and civil conflict involve a number of aspects that distinguish it from care during times of peace. We aimed to analyze the dynamics and outcomes of prehospital and hospital care during ongoing conflicts. STUDY DESIGN: Multicentric prospective observational study. METHOD: Patients enrolled in the study, which was conducted in Turkey, were all injured in armed conflict and taken to level 1 trauma centers...
September 5, 2017: Public Health
https://www.readbyqxmd.com/read/28885964/cervical-joint-position-sense-in-hypobaric-conditions-a-randomized-double-blind-controlled-trial
#10
Diana Bagaianu, Damien Van Tiggelen, N Duvigneaud, Veerle Stevens, Danny Schroyen, Dirk Vissenaeken, Gino D'Hondt, Laurent Pitance
Well-adapted motor actions require intact and well-integrated information from all of the sensory systems, specifically the visual, vestibular, and somatosensory systems, including proprioception. Proprioception is involved in the sensorimotor control by providing the central nervous system with an updated body schema of the biomechanical and spatial properties of the body parts. With regard to the cervical spine, proprioceptive information from joint and muscle mechanoreceptors is integrated with vestibular and visual feedback to control head position, head orientation, and whole body posture...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28883024/hearing-threshold-shifts-among-military-pilots-of-the-israeli-air-force
#11
Liyona Kampel-Furman, Z Joachims, H Bar-Cohen, A Grossman, Y Frenkel-Nir, Y Shapira, E Alon, E Carmon, B Gordon
BACKGROUND: Military aviators are potentially at risk for developing noise-induced hearing loss. Whether ambient aircraft noise exposure causes hearing deficit beyond the changes attributed to natural ageing is debated. The aim of this research was to assess changes in hearing thresholds of Israeli Air Force (IAF) pilots over 20 years of military service and identify potential risk factors for hearing loss. METHODS: A retrospective cohort analysis was conducted of pure-tone air conduction audiograms of pilots, from their recruitment at 18 years of age until the last documented medical check-up...
September 6, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28879004/diving-behaviour-of-cuvier-s-beaked-whales-exposed-to-two-types-of-military-sonar
#12
Erin A Falcone, Gregory S Schorr, Stephanie L Watwood, Stacy L DeRuiter, Alexandre N Zerbini, Russel D Andrews, Ronald P Morrissey, David J Moretti
Cuvier's beaked whales (Ziphius cavirostris) have stranded in association with mid-frequency active sonar (MFAS) use, and though the causative mechanism linking these events remains unclear, it is believed to be behaviourally mediated. To determine whether MFAS use was associated with behavioural changes in this species, satellite tags were used to record the diving and movements of 16 Cuvier's beaked whales for up to 88 days in a region of frequent MFAS training off the coast of Southern California. Tag data were combined with summarized records of concurrent bouts of high-power, surface-ship and mid-power, helicopter-deployed MFAS use, along with other potential covariates, in generalized additive mixed-effects models...
August 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28871050/the-hacms-program-using-formal-methods-to-eliminate-exploitable-bugs
#13
Kathleen Fisher, John Launchbury, Raymond Richards
For decades, formal methods have offered the promise of verified software that does not have exploitable bugs. Until recently, however, it has not been possible to verify software of sufficient complexity to be useful. Recently, that situation has changed. SeL4 is an open-source operating system microkernel efficient enough to be used in a wide range of practical applications. Its designers proved it to be fully functionally correct, ensuring the absence of buffer overflows, null pointer exceptions, use-after-free errors, etc...
October 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28845717/characterization-and-minimization-of-the-stress-response-to-trapping-in-free-ranging-wolves-canis-lupus-insights-from-physiology-and-behavior
#14
Nuno Santos, Helena Rio-Maior, Mónia Nakamura, Sara Roque, Ricardo Brandão, Francisco Álvares
OBJECTIVES: Wildlife capture is an essential management tool that induces a reactive homeostasis response in the captured animals. The aim of this study was to characterize the reactive homeostatic response to trapping in free-ranging wolves and assess the mitigation achieved by reducing the duration of restraint. MATERIALS AND METHODS: Making use of wolves captured for ecological research as a model for wildlife acute stress, we characterize 25 reactive homeostasis mediators and we assess the effect on these mediators of reducing the duration of restraint in trap by using remote trap activation alarms...
August 28, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28845544/ventilatory-choices-for-intubated-patients-during-helicopter-stretcher-winching
#15
John Hollott
INTRODUCTION: The winching of intubated patients on a stretcher into a helicopter is a rare event. Intermittent positive pressure ventilation is mandatory, which can either be performed manually with a self-inflating bag, or automatically using a portable ventilator. Theoretically automatic ventilation would provide improved oxygenation, more stable arterial carbon dioxide levels and a reduced risk of airway disconnection. Furthermore, the stretcher attendant may better perform winching procedures with higher situational awareness, contributing to crew and patient safety...
August 28, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28827198/survival-of-cardiac-arrest-patients-on-ski-slopes-a-10-year-analysis-of-the-northern-french-alps-emergency-network
#16
Damien Viglino, Maxime Maignan, Arnaud Michalon, Julien Turk, Sarah K Buse, Marc Blancher, Tom P Aufderheide, Loïc Belle, Dominique Savary, François-Xavier Ageron, Guillaume Debaty
AIM: Intense physical activity, cold and altitude make mountain sports a cause of increased risk of out-of-hospital cardiac arrest (OHCA). The difficulties of pre-hospital management related to this challenging environment could be mitigated by the presence of ski-patrollers in ski areas and use of helicopters for medical rescue. We assess whether this particular situation positively impacts the chain of survival compared to the general population. METHODS: Analysis of prospectively collected data from the cardiac arrest registry of the Northern French Alps Emergency Network (RENAU) from 2004 to 2014...
August 4, 2017: Resuscitation
https://www.readbyqxmd.com/read/28818147/attention-deficit-hyperactivity-disorder-and-fatal-accidents-in-aviation-medicine
#17
Tanja Laukkala, Robert Bor, Bruce Budowle, Antti Sajantila, Pooshan Navathe, Markku Sainio, Alpo Vuorio
BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder with symptoms of inattention and/or hyperactivity-impulsivity that interfere with functioning and/or development. ADHD occurs in about 2.5% of adults. ADHD can be an excluding medical condition among pilots due to the risk of attentional degradation and therefore impact on flight safety. Diagnosis of ADHD is complex, which complicates aeromedical assessment. This study highlights fatal accident cases among pilots with ADHD and discusses protocols to detect its presence to help to assess its importance to flight safety...
September 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28817098/estimation-of-the-vertical-distribution-of-radiocesium-in-soil-on-the-basis-of-the-characteristics-of-gamma-ray-spectra-obtained-via-aerial-radiation-monitoring-using-an-unmanned-helicopter
#18
Kotaro Ochi, Miyuki Sasaki, Mutsushi Ishida, Shoichiro Hamamoto, Taku Nishimura, Yukihisa Sanada
After the Fukushima Daiichi Nuclear Power Plant accident, the vertical distribution of radiocesium in soil has been investigated to better understand the behavior of radiocesium in the environment. The typical method used for measuring the vertical distribution of radiocesium is troublesome because it requires collection and measurement of the activity of soil samples. In this study, we established a method of estimating the vertical distribution of radiocesium by focusing on the characteristics of gamma-ray spectra obtained via aerial radiation monitoring using an unmanned helicopter...
August 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28795513/the-economic-implications-of-sylvatic-rabies-eradication-in-italy
#19
S Sartore, P Mulatti, S Trestini, M Lorenzetto, L Gagliazzo, S Marangon, L Bonfanti
After more than 10 years of absence, sylvatic rabies re-appeared in Italy in 2008. To prevent disease spread, three oral rabies vaccination (ORV) campaigns targeting red foxes were performed through manual distribution of vaccine baits between January and September 2009. As these campaigns proved unsuccessful, at the end of December 2009, baits started being distributed using helicopters, allowing uniform coverage of larger areas in a shorter time period. From winter 2009 to autumn 2016, a total of 15 ORV campaigns (four emergency, four regular and seven preventive ORV) were implemented through aerial distribution of baits...
August 9, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28782653/a-maximal-incremental-effort-alters-tear-osmolarity-depending-on-the-fitness-level-in-military-helicopter-pilots
#20
Jesús Vera Vilchez, Raimundo Jimenez, Iker Madinabeitia, Nerijus Masiulis, David Cárdenas
PURPOSE: Fitness level modulates the physiological responses to exercise for a variety of indices. While intense bouts of exercise have been demonstrated to increase tear osmolarity (Tosm), it is not known if fitness level can affect the Tosm response to acute exercise. This study aims to compare the effect of a maximal incremental test on Tosm between trained and untrained military helicopter pilots. METHODS: Nineteen military helicopter pilots (ten trained and nine untrained) performed a maximal incremental test on a treadmill...
August 4, 2017: Ocular Surface
keyword
keyword
12571
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"