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https://www.readbyqxmd.com/read/29040899/application-of-topographical-source-model-for-air-dose-rates-conversions-in-aerial-radiation-monitoring
#1
Azusa Ishizaki, Yukihisa Sanada, Mutsushi Ishida, Masahiro Munakata
After the Fukushima Daiichi Nuclear Power Station (FDNPS) accident in 2011, aerial radiation monitoring (ARM) using a manned helicopter was conducted to rapidly measure air dose rates and the deposition of radioactive nuclides over a large area. Typically, the air dose rate is obtained by conversion from the count rate using conventional flat source model (FSM). The converted dose rate obtained via aerial monitoring poorly matches the results of ground measurement in the mountain and forest areas because FSM does not consider topographical effects...
October 14, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29037168/locating-helicopter-emergency-medical-service-bases-to-optimise-population-coverage-versus-average-response-time
#2
Alan A Garner, Pieter L van den Berg
BACKGROUND: New South Wales (NSW), Australia has a network of multirole retrieval physician staffed helicopter emergency medical services (HEMS) with seven bases servicing a jurisdiction with population concentrated along the eastern seaboard. The aim of this study was to estimate optimal HEMS base locations within NSW using advanced mathematical modelling techniques. METHODS: We used high resolution census population data for NSW from 2011 which divides the state into areas containing 200-800 people...
October 16, 2017: BMC Emergency Medicine
https://www.readbyqxmd.com/read/29035594/total-body-water-dynamics-estimated-with-bioelectrical-impedance-vector-analysis-and-b-type-natriuretic-peptide-after-exposure-to-hypobaric-hypoxia-a-field-study
#3
Giacomo Strapazzon, Matiram Pun, Tomas Dal Cappello, Emily Procter, Piergiorgio Lochner, Hermann Brugger, Antonio Piccoli
Strapazzon, Giacomo, Matiram Pun, Tomas Dal Cappello, Emily Procter, Piergiorgio Lochner, Hermann Brugger, and Antonio Piccoli. Total body water dynamics estimated with bioelectrical impedance vector analysis and B-type natriuretic peptide after exposure to hypobaric hypoxia: A field study. High Alt Med Biol. 18:000-000, 2017.-The relationship between total body water (TBW) dynamics and N-terminal pro-B-type natriuretic peptide (NT-proBNP), a stable metabolite of B-type natriuretic peptide, during acute high altitude exposure is not known...
October 16, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28992923/movement-patterns-of-nilgai-antelope-in-south-texas-implications-for-cattle-fever-tick-management
#4
Aaron M Foley, John A Goolsby, Alfonso Ortega-S, J Alfonso Ortega-S, A Pérez de León, Nirbhay K Singh, Andy Schwartz, Dee Ellis, David G Hewitt, Tyler A Campbell
Wildlife, both native and introduced, can harbor and spread diseases of importance to the livestock industry. Describing movement patterns of such wildlife is essential to formulate effective disease management strategies. Nilgai antelope (Boselaphus tragocamelus) are a free-ranging, introduced ungulate in southern Texas known to carry cattle fever ticks (CFT, Rhipicephalus (Boophilus) microplus, R. (B.) annulatus). CFT are the vector for the etiological agent of bovine babesiosis, a lethal disease causing high mortality in susceptible Bos taurus populations and severely affecting the beef cattle industry...
October 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28985859/in-by-helicopter-out-by-cab-the-financial-cost-of-aeromedical-overtriage-of-trauma-patients
#5
SriGita Krishna Madiraju, Joseph Catino, Candace Kokaram, Thomas Genuit, Marko Bukur
BACKGROUND: Helicopter transport of injured patients is controversial and costly. This study aims to show that a complex trauma algorithm leads to significant aeromedical overtriage at substantial cost. Our secondary outcomes were to compare adjusted mortality and outcomes between air and ground transport and determine predictors of overtriage. MATERIALS AND METHODS: A 6-y retrospective analysis was conducted of all trauma activations at a Level I center. Patients were dichotomized by transportation method as well as trauma activation criteria...
October 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28982816/bypassing-nearest-hospital-for-more-distant-neuroscience-care-in-head-injured-adults-with-suspected-traumatic-brain-injury-findings-of-the-head-injury-transportation-straight-to-neurosurgery-hits-ns-pilot-cluster-randomised-trial
#6
Fiona Elizabeth Lecky, Wanda Russell, Graham McClelland, Elspeth Pennington, Gordon Fuller, Steve Goodacre, Kyee Han, Andrew Curran, Damian Holliman, Nathan Chapman, Jennifer Freeman, Sonia Byers, Suzanne Mason, Hugh Potter, Timothy Coats, Kevin Mackway-Jones, Mary Peters, Jane Shewan
OBJECTIVE: Reconfiguration of trauma services, with direct transport of patients with traumatic brain injury (TBI) to specialist neuroscience centres (SNCs)-bypassing non-specialist acute hospitals (NSAHs), could improve outcomes. However, delays in stabilisation of airway, breathing and circulation (ABC) may worsen outcomes when compared with selective secondary transfer from nearest NSAH to SNC. We conducted a pilot cluster randomised controlled trial to determine the feasibility and plausibility of bypassing suspected patients with TBI -directly into SNCs-producing a measurable effect...
October 5, 2017: BMJ Open
https://www.readbyqxmd.com/read/28975883/prehospital-interventions-before-and-after-implementation-of-a-physician-staffed-helicopter
#7
Asger Sonne, Sandra Wulffeld, Jacob Steinmetz, Lars S Rasmussen, Rasmus Hesselfeldt
INTRODUCTION: Implementation of a physician-staffed helicopter emergency medical service (HEMS) in eastern Denmark was associated with increased survival for severely injured patients. This study aimed to assess the potential impact of advanced prehospital interventions by comparing the proportion of patients who received those interventions before and after the HEMS implementation. METHODS: A post-hoc analysis of a prospective before-after study. We included trauma patients with Injury Severity Scores above three who had been admitted to seven emergency departments or one level 1 trauma centre in the course of a five-month period before and a 12-month period after the HEMS implementation...
October 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28953422/indications-and-outcomes-of-helicopter-rescue-missions-in-alpine-mountain-huts-a-retrospective-study
#8
Mathieu Pasquier, Louis Marxer, Hervé Duplain, Vincent Frochaux, Florence Selz, Pierre Métrailler, Grégoire Zen Ruffinen, Olivier Hugli
Pasquier, Mathieu, Louis Marxer, Hervé Duplain, Vincent Frochaux, Florence Selz, Pierre Métrailler, Grégoire Zen Ruffinen, and Olivier Hugli. Indications and outcomes of helicopter rescue missions in alpine mountain huts: a retrospective study. High Alt Med Biol 00:000-000, 2017. AIMS: This retrospective study describes the rescue indications and outcome of patients rescued by helicopter from mountain huts in the Swiss Alps. The hospital course and operational data were also studied...
September 27, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28952663/psychological-considerations-in-submarine-escape-training-brief-overview-and-future-directions
#9
Charles H Van Wijk
The inability of a submarine to surface must rate as one of greatest risks to sailors in peacetime. To prepare for such emergencies, many navies provide training to master the procedures required to escape successfully from disabled submarines. This paper provides a brief overview of some of the psychological principles in simulated submarine escape training. It further discusses applicable psychological constructs such as positive outcome expectancies, the role of anxiety, and other personal factors mediating outcomes of such training...
2017: International Maritime Health
https://www.readbyqxmd.com/read/28952660/medical-emergencies-on-large-passenger-ships-without-doctors-the-oslo-kiel-oslo-ferry-experience
#10
Thor-Erik Holt, Agnar Tveten, Eilif Dahl
BACKGROUND: The Oslo-Kiel-Oslo route is currently the only direct ferry crossing between Norway and Germany, covered by 2 cruise-and-cars ferries carrying about 2,600 passengers each and sailing every day (20 h at sea, 4 h in port). Unlike most ocean going cruise vessels, they are not required to carry a physician but an on-board paramedic handles medical emergencies. The aim of the study was to provide data on medical emergencies leading to helicopter evacuations (helivacs) or other urgent transfers to facilities ashore from the two ferries during a 3-year period...
2017: International Maritime Health
https://www.readbyqxmd.com/read/28940249/protection-against-cold-a-survey-of-available-equipment-in-swedish-pre-hospital-services
#11
O Henriksson, U Björnstig, B-I Saveman, P J Lundgren
BACKGROUND: The aim of this study was to survey the current equipment used for prevention, treatment and monitoring of accidental hypothermia in Swedish pre-hospital services. METHODS: A questionnaire was sent to all road ambulance services (AS), the helicopter emergency medical services (HEMS), the national helicopter search and rescue service (SAR) and the municipal rescue services (RS) in Sweden to determine the availability of insulation, active warming, fluid heating, and low-reading thermometers...
November 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28935501/safety-and-time-course-of-drip-and-ship-in-treatment-of-acute-ischemic-stroke
#12
Hideyuki Ishihara, Fumiaki Oka, Takayuki Oku, Mizuya Shinoyama, Eiichi Suehiro, Kazutaka Sugimoto, Michiyasu Suzuki
BACKGROUND: The drip-and-ship approach allows intravenous tissue plasminogen activator therapy and adjuvant endovascular treatment in acute ischemic stroke, even in rural areas. Here, we examined the safety and time course of the drip-and-ship approach. METHODS: Fifty consecutive cases treated with the drip-and-ship approach (drip-and-ship group) in June 2009 to March 2016 were retrospectively examined. Changes in mean blood pressure, systemic complications, and neurological complications were compared according to method of transportation...
November 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28934985/factors-influencing-on-scene-time-in-a-rural-norwegian-helicopter-emergency-medical-service-a-retrospective-observational-study
#13
Øyvind Østerås, Jon-Kenneth Heltne, Bjørn-Christian Vikenes, Jörg Assmus, Guttorm Brattebø
BACKGROUND: Critically ill patients need to be immediately identified, properly managed, and rapidly transported to definitive care. Extensive prehospital times may increase mortality in selected patient groups. The on-scene time is a part of the prehospital interval that can be decreased, as transport times are determined mostly by the distance to the hospital. Identifying factors that affect on-scene time can improve training, protocols, and decision making. Our objectives were to assess on-scene time in the Helicopter Emergency Medical Service (HEMS) in our region and selected factors that may affect it in specific and severe conditions...
September 21, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28923147/idiopathic-syringomyelia-in-a-military-helicopter-pilot
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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