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https://www.readbyqxmd.com/read/28230727/analyzing-the-effects-of-uav-mobility-patterns-on-data-collection-in-wireless-sensor-networks
#1
Sarmad Rashed, Mujdat Soyturk
Sensor nodes in a Wireless Sensor Network (WSN) can be dispersed over a remote sensing area (e.g., the regions that are hardly accessed by human beings). In such kinds of networks, datacollectionbecomesoneofthemajorissues. Getting connected to each sensor node and retrieving the information in time introduces new challenges. Mobile sink usage-especially Unmanned Aerial Vehicles (UAVs)-is the most convenient approach to covering the area and accessing each sensor node in such a large-scale WSN. However, the operation of the UAV depends on some parameters, such as endurance time, altitude, speed, radio type in use, and the path...
February 20, 2017: Sensors
https://www.readbyqxmd.com/read/28230588/how-to-expose-the-entire-sella-floor-with-minimal-manipulation-during-an-endoscopic-endonasal-transsphenoidal-approach
#2
Do Hyun Kim, Yong-Kil Hong, Sin-Soo Jeun, Yong Jin Park, Soo Whan Kim, Jin Hee Cho, Boo-Young Kim, Sung Won Kim
OBJECTIVE: A method of opening the posterior ethmoid air cells with minimal manipulation is important for adequate exposure of the sella floor and minimal nasal morbidity. METHODS: Between February 2009 and August 2016, 373 patients with skull-base tumors underwent surgery via endoscopic endonasal transsphenoidal approach with the 2-nostrils/4-hands technique using this technique. RESULTS: A linear incision was made laterally toward one-third of the superior turbinate along the superior border of the sphenoid sinus ostium...
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28229483/venous-hemodialysis-catheters-and-cardiac-implantable-electronic-devices-avoiding-a-high-risk-combination
#3
EDITORIAL
Theodore F Saad, Henry L Weiner
End-stage renal disease is frequently accompanied by cardiac comorbidity that warrants treatment with a cardiovascular implantable electronic device (permanent pacemaker or implantable cardioverter-defibrillator). In the United States, chronic hemodialysis (HD) population, cardiac implantable devices are present in up to 10.5% of patients; a venous HD catheter is utilized for blood access in 18% of prevalent patients. The concomitant presence of a venous HD catheter and cardiovascular implantable device creates a high-risk circumstance, with potential for causing symptomatic central venous stenosis, and for developing complicated endovascular infection...
February 23, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28228324/extended-maxillotomy-for-skull-base-access-in-contemporary-management-of-chordomas-rationale-and-technical-aspect
#4
Muhammad Fahmi Abdul Jalil, Rowan D Story, Myron Rogers
Minimally invasive approaches to the central skull base have been popularized over the last decade and have to a large extent displaced 'open' procedures. However, traditional skull base surgery still has its role especially when dealing with a large clival chordoma where maximal surgical resection is the principal goal to maximize patient survival. In this paper, we present a case of a 25year-old male patient with chordoma in the inferior clivus which was initially debulked via a transnasal endoscopic approach...
February 19, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28227476/a-smartphone-based-system-for-assessing-intraocular-pressure
#5
A Mariakakis, E Wang, S Patel, J C Wen, A Mariakakis, E Wang, S Patel, J C Wen, E Wang, A Mariakakis, S Patel, J C Wen
The measurement of intraocular pressure (IOP) is an important vital sign for the eye, particularly for the diagnosis of glaucoma. Procedures for measuring IOP have been used by eye care professionals for over 100 years, but those without access to such professionals often go undiagnosed. We present a smartphone-based system that can be operated by minimally trained users to measure IOP. The system emulates fixed-force tonometry using a low-cost mechanical attachment to the smartphone. Video is captured through the attachment and then processed in real-time to provide an absolute estimate of the patient's intraocular pressure...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227097/effects-of-geometry-and-material-on-the-insertion-of-very-small-neural-electrode
#6
Shaun P Marshall, Wei-Chen Lin, Paras R Patel, Albert J Shih, Cynthia A Chestek, Shaun P Marshall, Wei-Chen Lin, Paras R Patel, Albert J Shih, Cynthia A Chestek, Wei-Chen Lin, Shaun P Marshall, Cynthia A Chestek, Albert J Shih, Paras R Patel
For neural probes to be used chronically for years in the human body, they must provoke minimal scarring. Recently, a number of groups have reported substantially reduced scar tissue using cellular scale electrodes below 15 μm in size. This size scale is accessible to manufacturing techniques, but can be very difficult to insert in the brain for most common electrode materials. In this study, we explore the design space available to cellular scale electrodes that will self-insert into the brain. First a mathematical model is developed using beam buckling equations for different materials and geometries...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226729/passive-artifact-behavior-prediction-of-interventional-tools-in-high-field-mri-using-a-0-55t-portable-benchtop-mr-scanner
#7
H Abadi, J Krug, A Illanes, M Friebe, H Abadi, J Krug, A Illanes, M Friebe, J Krug, M Friebe, A Illanes, H Abadi
Using magnetic resonance imaging (MRI) for guiding minimally invasive interventions requires surgical devices which on one hand are visible in the MR image but on the other hand do not generate large artifacts, which distort the overall imaging process. Passive markers are one way to visualize devices such as catheters or biopsy needles in MRI. The evaluation of newly developed passive markers usually requires access to high-field MRI scanners (1.5 T and 3 T). This makes the practical evaluation time-consuming and expensive...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224441/does-medicaid-insurance-confer-adequate-access-to-adult-orthopaedic-care-in-the-era-of-the-patient-protection-and-affordable-care-act
#8
Joseph T Labrum, Taylor Paziuk, Theresa C Rihn, Alan S Hilibrand, Alexander R Vaccaro, Mitchell G Maltenfort, Jeffrey A Rihn
BACKGROUND: A current appraisal of access to orthopaedic care for the adult patient receiving Medicaid is important, since Medicaid expansion was written into law by the Patient Protection and Affordable Care Act (PPACA). QUESTIONS/PURPOSES: (1) Do orthopaedic practices provide varying access to orthopaedic care for simulated patients with Medicaid insurance versus private insurance in a blinded survey? (2) What are the surveyed state-by-state Medicaid acceptance rates for adult orthopaedic practices in the current era of Medicaid expansion set forth by the PPACA? (3) Do surveyed rates of access to orthopaedic care in the adult patient population vary across practice setting (private vs academic) or vary with different Medicaid physician reimbursement rates? (4) Are there differences in the surveyed Medicaid acceptance rates for adult orthopaedic practices in states that have expanded Medicaid coverage versus states that have foregone expansion? METHODS: Simulated Patient Survey: We performed a telephone survey study of orthopaedic offices in four states with Medicaid expansion...
February 21, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28223043/socio-economic-status-influences-the-likelihood-of-undergoing-surgical-treatment-for-pancreatic-cancer-in-the-netherlands
#9
Maikel J A M Bakens, Valery E P P Lemmens, Ignace H J T de Hingh
: Surgical resection offers the only prospect of cure in pancreatic cancer patients. The probability of undergoing surgery is determined by several factors. The influence of socio-economic status (SES) on surgical treatment and survival was investigated in the Netherlands, a country with a widely accessible healthcare system. METHODS: Data on all patients with non-metastasised pancreatic cancer between 2005-2013 were analysed in the Eindhoven Cancer Registry (ECR)...
February 17, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28221665/totally-percutaneous-versus-surgical-cut-down-femoral-artery-access-for-elective-bifurcated-abdominal-endovascular-aneurysm-repair
#10
REVIEW
Madelaine Gimzewska, Alexander Ir Jackson, Su Ern Yeoh, Mike Clarke
BACKGROUND: Abdominal aortic aneurysms (AAAs) are a vascular condition with significant risk attached, particularly if they rupture. It is, therefore, critical to identify and repair these as an elective procedure before they rupture and require emergency surgery. Repair has traditionally been an open surgical technique that required a large incision across the abdomen. Endovascular abdominal aortic aneurysm repairs (EVARs) are now a common alternative. In this procedure, the common femoral artery is exposed via a cut-down approach and a graft introduced to the aneurysm in this way...
February 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28221151/-techniques-for-percutaneous-access-during-percutaneous-nephrolithotomy
#11
Daniel Pérez-Fentes
The creation of the access is one of the main steps in percutaneous nephrolithotomy, the most complicated for many urologists and the one that limited most the universalization of the technique. From a purely technical point of view, it includes puncture of the excretory tract and dilatation of the percutaneous tract to end with the introduction of an Amplatz type working sheath. The objective of the puncture is to try to access the excretory system through the renal papilla, minimizing the risk of bleeding...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28216931/predictors-of-radiation-exposure-to-providers-during-percutaneous-nephrolithotomy
#12
David L Wenzler, Joel E Abbott, Jeannie J Su, William Shi, Richard Slater, Daniel Miller, Michelle J Siemens, Roger L Sur
BACKGROUND: Limited studies have reported on radiation risks of increased ionizing radiation exposure to medical personnel in the urologic community. Fluoroscopy is readily used in many urologic surgical procedures. The aim of this study was to determine radiation exposure to all operating room personnel during percutaneous nephrolithotomy (PNL), commonly performed for large renal or complex stones. MATERIALS AND METHODS: We prospectively collected personnel exposure data for all PNL cases at two academic institutions...
January 2017: Urology Annals
https://www.readbyqxmd.com/read/28215265/intrinsic-and-extrinsic-predictors-of-video-gaming-behaviour-and-adolescent-bedtimes-the-relationship-between-flow-states-self-perceived-risk-taking-device-accessibility-parental-regulation-of-media-and-bedtime
#13
Lisa J Smith, Michael Gradisar, Daniel L King, Michelle Short
How computer games affect the time at which adolescents go to bed is of growing research interest; however, the intrinsic individual and extrinsic sociocultural factors mediating the relationship between gaming and sleep have received minimal attention. This paper investigates how gaming duration mediates the relationship between intrinsic factors (perception of risky events and flow) and extrinsic factors (parental regulation and media accessibility) and adolescent bedtime. Adolescents (N = 422; age = 16...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28215040/who-should-receive-a-transplant-for-acute-lymphoblastic-leukaemia
#14
REVIEW
Rishi Dhawan, David I Marks
Allogeneic haematopoietic cell transplantation continues to be an important curative therapy for acute lymphoblastic leukaemia (ALL). Traditionally accepted indications for allografting adult ALL patients need reevaluation in light of outcomes with paediatric-like intensive regimens. Minimal residual disease status and oncogenetics can be used for restratification of standard risk patients. A greater body of data on haematopoietic cell transplantation (HCT) outcomes from haploidentical and cord blood donor sources has been generated in recent years...
February 18, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28212464/oxytocin-reduces-ethanol-self-administration-in-mice
#15
Courtney E King, William C Griffin, Lauryn N Luderman, Malcolm M Kates, Jacqueline F McGinty, Howard C Becker
BACKGROUND: Excessive ethanol consumption remains an important health concern and effective treatments are lacking. The central oxytocin system has emerged as a potentially important therapeutic target for alcohol and drug addiction. These studies tested the hypothesis that oxytocin reduces ethanol consumption. METHODS: Male C57BL/6J mice were given access to ethanol (20% v/v) using a model of binge-like drinking ("drinking-in-the-dark") that also included the use of lickometer circuits to evaluate the temporal pattern of intake as well as 2-bottle choice drinking in the home cage...
February 17, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28211912/dna-methylation-map-in-circulating-leukocytes-mirrors-subcutaneous-adipose-tissue-methylation-pattern-a-genome-wide-analysis-from-non-obese-and-obese-patients
#16
A B Crujeiras, A Diaz-Lagares, J Sandoval, F I Milagro, S Navas-Carretero, M C Carreira, A Gomez, D Hervas, M P Monteiro, F F Casanueva, M Esteller, J A Martinez
The characterization of the epigenetic changes within the obesity-related adipose tissue will provide new insights to understand this metabolic disorder, but adipose tissue is not easy to sample in population-based studies. We aimed to evaluate the capacity of circulating leukocytes to reflect the adipose tissue-specific DNA methylation status of obesity susceptibility. DNA samples isolated from subcutaneous adipose tissue and circulating leukocytes were hybridized in the Infinium HumanMethylation 450 BeadChip...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209417/influence-of-hospital-level-practice-patterns-on-variation-in-the-application-of-minimally-invasive-surgery-in-united-states-pediatric-patients
#17
Arianne T Train, Carroll M Harmon, David H Rothstein
BACKGROUND: Although disparities in access to minimally invasive surgery are thought to exist in pediatric surgical patients in the United States, hospital-level practice patterns have not been evaluated as a possible contributing factor. METHODS: Retrospective cohort study using the Kids' Inpatient Database, 2012. Odds ratios of undergoing a minimally invasive compared to open operation were calculated for six typical pediatric surgical operations after adjustment for multiple patient demographic and hospital-level variables...
February 2, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28209120/factors-influencing-utilisation-of-maternal-health-services-by-adolescent-mothers-in-low-and-middle-income-countries-a-systematic-review
#18
Oluwasola Eniola Banke-Thomas, Aduragbemi Oluwabusayo Banke-Thomas, Charles Anawo Ameh
BACKGROUND: Adolescent mothers aged 15-19 years are known to have greater risks of maternal morbidity and mortality compared with women aged 20-24 years, mostly due to their unique biological, sociological and economic status. Nowhere Is the burden of disease greater than in low-and middle-income countries (LMICs). Understanding factors that influence adolescent utilisation of essential maternal health services (MHS) would be critical in improving their outcomes. METHODS: We systematically reviewed the literature for articles published until December 2015 to understand how adolescent MHS utilisation has been assessed in LMICs and factors affecting service utilisation by adolescent mothers...
February 16, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28208612/enteric-pathogens-and-their-toxin-induced-disruption-of-the-intestinal-barrier-through-alteration-of-tight-junctions-in-chickens
#19
REVIEW
Wageha A Awad, Claudia Hess, Michael Hess
Maintaining a healthy gut environment is a prerequisite for sustainable animal production. The gut plays a key role in the digestion and absorption of nutrients and constitutes an initial organ exposed to external factors influencing bird's health. The intestinal epithelial barrier serves as the first line of defense between the host and the luminal environment. It consists of a continuous monolayer of intestinal epithelial cells connected by intercellular junctional complexes which shrink the space between adjacent cells...
February 10, 2017: Toxins
https://www.readbyqxmd.com/read/28207802/uptake-contexts-and-perceived-impacts-of-hiv-testing-and-counselling-among-adults-in-east-and-southern-africa-a-meta-ethnographic-review
#20
T Charles Witzel, Wezzie Lora, Shelley Lees, Nicola Desmond
INTRODUCTION: HIV testing and counselling (HTC) interventions are key to controlling the HIV epidemic in East and Southern Africa where HTC is primarily delivered through voluntary counselling and testing (VCT), provider initiated testing and counselling (PITC), and home-based counselling and testing (HBVCT). Decision making processes around uptake of HTC models must be taken into account when designing new interventions. Counselling in HTC aims to reduce post-test risk taking behaviour and to link individuals to care but its efficacy is unclear...
2017: PloS One
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