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https://www.readbyqxmd.com/read/28338868/effects-of-field-size-and-depth-on-photoneutron-dose-equivalent-distributions-in-an-18-mv-x-ray-medical-accelerator
#1
Amir Hakimi, Mehdi Sohrabi, Seied Rabie Mahdavi
Photoneutron (PN) dosimetry studies in high-energy X-ray medical accelerators are of high clinical and scientific interest in particular to protect patients undergoing radiotherapy. In this context, fast, epithermal and thermal PN dose equivalent distributions in different field sizes and depths in air and in a multilayer polyethylene phantom were studied. Polycarbonate track dosemeters in contact with a 10B convertor (with or without cadmium cover) when electrochemically etched were applied. PN dose equivalents in air and on the surface of the phantom are linear functions of field size...
March 1, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28337353/gastric-duplication-a-rare-cause-of-recurrent-vomiting
#2
Brahmananda Koduri, Katie McHale, Christina Yost, Michael H Goodman, Dennis Hoelzer
Vomiting is a physical finding that can occur at any age but presents the greatest challenge when it is recurrent in a child. The etiology is varied (Sieunarine and Manmohansingh, 1989; Suzuki, 1982), and recurrent vomiting can be a symptom of life threatening medical or surgical emergencies. Early recognition is mandatory for preventing delay in management and potential complications. Gastric duplication is rare and mostly diagnosed in infancy with only a few cases documented in the medical literature presenting in childhood...
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28336018/air-medical-transport-residency-program-for-flight-nurses-and%C3%A2-paramedics
#3
Jeff Phillips, Chad Kuhlman, Chris Evanson
No abstract text is available yet for this article.
March 2017: Air Medical Journal
https://www.readbyqxmd.com/read/28335689/trends-of-occupational-hygiene-in-finland
#4
Rauno Pääkkönen, Milja Koponen
The aim of this work is to evaluate and describe the current status of, and prospects for, the future of occupational hygiene in Finland. The main sources of information include a seminar held in the annual meeting of Finnish Occupational Hygiene Society, and interviews with different stakeholders. Nanotechnology and other new materials, changing work environments, circular economy including green jobs, new medical methods, and advances of construction methods were recognised as future challenges. Future work opportunities for occupational hygiene experts included exposure assessments in indoor air surveys, private consulting and entrepreneurship in general, international activities, and product safety issues...
March 24, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28333691/asthma-prevalence-and-severity-in-low-resource-communities
#5
Álvaro A Cruz, Rafael Stelmach, Eduardo V Ponte
PURPOSE OF REVIEW: The prevalence of asthma was thought to be low in most low-income countries, but several reports have indicated this is not always true. This is a narrative review of recent publications on the burden of asthma in low and middle-income countries (LMIC) and underprivileged communities from developed countries. RECENT FINDINGS: Several studies have reported a low prevalence of asthma is LMIC, but indicate it is increasing. In the last few years, however, many surveys demonstrated this may not always be true...
March 22, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28330688/management-of-spontaneous-pneumomediastinum-are-hospitalization-and-prophylactic-antibiotics-needed
#6
Masatomo Ebina, Akira Inoue, Akihiro Takaba, Koichi Ariyoshi
BACKGROUND: Spontaneous pneumomediastinum is defined as the presence of free air in the mediastinum without any apparent concomitant factors or disease. It is uncommon but usually benign and self-limiting. Generally, patients with spontaneous pneumomediastinum are admitted to hospital, and occasionally, prophylactic antibiotics are administered to prevent mediastinitis. The purpose of this study was to describe practices concerning the feasibility of outpatient treatment and follow-up of spontaneous pneumomediastinum and the necessity of prophylactic antibiotics...
March 10, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28327493/noninvasive-ventilation-open-issues-for-nursing-research
#7
Stefano Bambi, Enrica Mati, Christian De Felippis, Alberto Lucchini
According to the current literature, Noninvasive Ventilation (NIV) is a well-recognized respiratory support technique for patients affected by Acute Respiratory Failure (ARF). As highlighted by recent meta-analysis, a tight adherence to protocols regarding patients' selection criteria, relative or absolute contraindications, plus highly skilled and experienced operators, can positively affect the NIV performance and mortality rates. Positive outcome from NIV respiratory support is dependent from: patient's clinical condition and education needs; confidence of the staff with NIV technology; choice and management of the most suitable interface available prevention of interface complications; nutritional assessment (artificial feeding if required) and conditioning of medical gas...
March 14, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28323590/the-ecology-of-medical-care-among-israeli-military-aviators
#8
Barak Gordon, Yuval Levy, Tal Yemini, Erez Carmon, Yifat Erlich, Doron Hermoni
BACKGROUND: The ecology of medical care model has been used in various populations with varying results. We aimed to apply this model in the population of Israeli Air Force (IAF) aviators. METHODS: An anonymous questionnaire was presented to all Israeli Air Force aviators during their mandatory yearly check-up over 1 yr starting on November 26th, 2012. The questionnaire contained items on demographic, personal, and military details, as well as items on the presence of clinical symptoms, and various health care contacts in the previous month...
December 1, 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28321922/retrospective-evaluation-of-venous-thromboembolism-vte-are-all-transient-provoking-events-the-same
#9
Chong Chyn Chua, Hui Yin Lim, Mark Tacey, Harshal Nandurkar, Prahlad Ho
OBJECTIVES: Venous thromboembolism (VTE) provoked by transient risk factors has traditionally been classified as a single entity with lower risk of recurrence. We evaluated the association between different categories of transient provoking factors and the relative risk of recurrence. METHODS: Retrospective evaluation of VTE events in non-cancer patients from July 2011 to December 2012 at two tertiary institutions in Australia with a minimum follow up of 24 months...
March 21, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28321062/the-presence-of-venous-gas-does-not-affect-the-prognosis-in-emphysematous-cystitis
#10
Yuki Yoshimatsu, Tomoko Takai, Yasuhisa Abe, Toshimasa Nakagawa
Objective Emphysematous cystitis (EC) has a high mortality rate compared with urinary tract infection without emphysema. However, its prognostic factors have yet to be determined. The presence of venous gas is suspected to be a rare, adverse prognostic factor of EC. However, all four previously reported cases improved. We hypothesized that venous gas is not an adverse prognostic factor of EC and aimed to assess the effect of venous gas on the EC prognosis. Methods Medical records were reviewed retrospectively...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28320117/use-of-social-media-to-assess-the-effectiveness-of-vagal-nerve-stimulation-in-dravet-syndrome-a-caregiver-s-perspective
#11
Rushna Ali, Mona Elsayed, Manpreet Kaur, Ellen Air, Naznin Mahmood, Jules Constantinou, Jason Schwalb
BACKGROUND: Dravet syndrome (DS) is a rare genetic epilepsy syndrome which is particularly pharmacoresistant. Vagus nerve stimulation (VNS) is commonly used in the treatment of DS as an adjunct to medical therapy. A meaningful assessment of post-surgical outcomes with VNS is difficult given the rarity of the condition. OBJECTIVE: In a novel approach, we used social media to contact patients with DS to gather data on post-surgical seizure reduction and overall satisfaction with VNS...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28318462/the-epidemiology-of-operation-stress-during-continuing-promise-2011-a-humanitarian-response-and-disaster-relief-mission-aboard-a-us-navy-hospital-ship
#12
William T Scouten, Melissa L Mehalick, Elizabeth Yoder, Andrea McCoy, Tracy Brannock, Mark S Riddle
Introduction Operational stress describes individual behavior in response to the occupational demands and tempo of a mission. The stress response of military personnel involved in combat and peace-keeping missions has been well-described. The spectrum of effect on medical professionals and support staff providing humanitarian assistance, however, is less well delineated. Research to date concentrates mainly on shore-based humanitarian missions. Problem The goal of the current study was to document the pattern of operational stress, describe factors responsible for it, and the extent to which these factors impact job performance in military and civilian participants of Continuing Promise 2011 (CP11), a ship-based humanitarian medical mission...
March 20, 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/28304221/fluoroscopy-time-is-not-accurate-as-a-surrogate-for-radiation-exposure
#13
Edvard Skripochnik, Shang A Loh
Objective The Food and Drug Administration and the Vascular Quality Initiative still utilize fluoroscopy time as a surrogate marker for procedural radiation exposure. This study demonstrates that fluoroscopy time does not accurately represent radiation exposure and that dose area product and air kerma are more appropriate measures. Methods Lower extremity endovascular interventions ( N = 145) between 2013 and 2015 performed at an academic medical center on a Siemens Artis-Zee floor mounted c-arm were identified...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28302216/-association-of-indoor-air-pollution-single-nucleotide-polymorphism-of-hif-1%C3%AE-gene-with-susceptibility-to-lung-cancer-in-han-population-in-fujian-province
#14
Fei He, Qi Qi, Xu Li, Rendong Xiao, Qiuping Xu, Weimin Xiong, Zhiqiang Liu, Lin Cai
BACKGROUND: Hypoxia inducible factor-1α (HIF-1α) is associated with the progression and metastasis of lung cancer. There are, however, few studies on the relationship between the single nucleotide polymorphisms of HIF-1α and susceptibility to lung cancer. Therefore, we aimed to investigate the relationship between indoor air pollution, HIF-1α rs2057482, and the susceptibility to primary lung cancer of the Fujian Han population. METHODS: The present study is a hospital-based case-control study...
March 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28298969/gastric-blunt-traumatic-injuries-a-computed-tomography-grading-classification
#15
Antonio Solazzo, Giulia Lassandro, Francesco Lassandro
AIM: To produce a radiological grading of gastric traumatic injuries. METHODS: In our study, we retrospectively analyzed 32 cases of blunt gastric traumatic injuries and compared computed tomography (CT) data with patients' surgical or medical development. In all cases, a basal phase was acquired, and an intravenous contrast material was administered via an antecubital venous catheter with acquisition in the venous phase (70-90 s). In addition, a further set of delayed scans was performed 4-5 min after the first scanning session, without supplementary intravenous contrast material, to identify or better define areas of active bleeding...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28297451/radshield-semiautomated-shielding-design-using-a-floor-plan-driven-graphical-user-interface
#16
Matthew C DeLorenzo, Dee H Wu, Kai Yang, Isaac B Rutel
The purpose of this study was to introduce and describe the development of RadShield, a Java-based graphical user interface (GUI), which provides a base design that uniquely performs thorough, spatially distributed calculations at many points and reports the maximum air-kerma rate and barrier thickness for each barrier pursuant to NCRP Report 147 methodology. Semiautomated shielding design calculations are validated by two approaches: a geometry-based approach and a manual approach. A series of geometry-based equations were derived giving the maximum air-kerma rate magnitude and location through a first derivative root finding approach...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28296928/the-probability-and-severity-of-decompression-sickness
#17
Laurens E Howle, Paul W Weber, Ethan A Hada, Richard D Vann, Petar J Denoble
Decompression sickness (DCS), which is caused by inert gas bubbles in tissues, is an injury of concern for scuba divers, compressed air workers, astronauts, and aviators. Case reports for 3322 air and N2-O2 dives, resulting in 190 DCS events, were retrospectively analyzed and the outcomes were scored as (1) serious neurological, (2) cardiopulmonary, (3) mild neurological, (4) pain, (5) lymphatic or skin, and (6) constitutional or nonspecific manifestations. Following standard U.S. Navy medical definitions, the data were grouped into mild-Type I (manifestations 4-6)-and serious-Type II (manifestations 1-3)...
2017: PloS One
https://www.readbyqxmd.com/read/28292512/clinicopathological-and-multisection-ct-features-of-primary-pulmonary-mucoepidermoid-carcinoma
#18
D-L Cheng, Y-X Hu, P-Q Hu, G Wen, K Liu
AIM: To delineate the multisection computed tomography (MSCT) features and the clinical characteristics of primary pulmonary mucoepidermoid carcinoma (PMEC). Prognostic factors were also analysed. MATERIALS AND METHODS: A retrospective study was undertaken to investigate the medical records and MSCT performance of histopathologically confirmed PMECs from 2007 to 2015. RESULTS: A total of 83.3% of patients with high-grade PMECs were aged >40 years, whereas there were 1...
March 11, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28291495/an-assessment-of-national-emt-certification-among-enlisted-military-medics
#19
Stephen Harper, Remle Crowe, Melissa Bentley, Chetan Kharod, Benjamin Walrath
BACKGROUND: Navy Hospital Corpsmen (HMs) are the Navy equivalent to Emergency Medical Technicians (EMTs) both in-garrison and on the battlefield. In 2000, the Emergency Medical Services (EMS) Education Agenda for the Future highlighted the need for a single certification agency to provide consistent evaluation of entry level competence for each nationally recognized EMS provider level. Administered by the National Registry of EMTs (NREMT), National EMT Certification is currently utilized by 46 states, the District of Columbia, four territories, and six federal organizations as part of their processes for granting licensure...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28291484/post-traumatic-stress-symptoms-in-united-states-air-force-aeromedical-evacuation-nurses-and-technicians
#20
Julie M Swearingen, Tanya M Goodman, Wayne L Chappelle, William T Thompson
Critical Care Air Transport Teams (CCATT) are specialized military medical personnel who provide high-acuity care in an aeromedical environment. The rate of post-traumatic stress disorder (PTSD) symptoms was assessed in CCATT personnel and their rates were compared to general aeromedical evacuation (AE) personnel. As part of a computer-based occupational stress survey, 188 crew members (138 AE nurses and technicians, 50 CCATT nurses and respiratory therapists) completed the PTSD Checklist - Military Version...
March 2017: Military Medicine
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