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https://www.readbyqxmd.com/read/29334275/laparoscopic-ovarian-drilling-versus-gnrh-antagonist-combined-with-cabergoline-as-a-prophylaxis-against-the-re-development-of-ovarian-hyperstimulation-syndrome
#1
Emaduldin Seyam, Enas Hefzy
OBJECTIVE: The aim of this work was to investigate the value of laparoscopic ovarian drilling (LOD) compared with GnRH antagonist flexible protocol combined with cabergoline (Cb), as a prophylaxis against the re-development of ovarian hyperstimulation syndrome (OHSS) in women with clomiphene citrate-resistant polycystic ovary disease (CCR-PCOD) who had severe OHSS before in a previous ICSI cycle. STUDY DESIGN: It is a prospective controlled study, where 250 CCR-PCOD women (n = 250) with a history of severe OHSS before, had been recruited for the study...
January 15, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29332226/monocortical-fixation-of-the-coracoid-in-the-latarjet-procedure-is-significantly-weaker-than-bicortical-fixation
#2
Uli Schmiddem, Nael Hawi, Emmanouil Liodakis, Antonios Dratzidis, Manuel Kraemer, Christof Hurschler, Richard Page, Rupert Meller
PURPOSE: A crucial step of the Latarjet procedure is the fixation of the coracoid process onto the glenoid. Multiple problems associated with the fixation have been described, including lesions of the suprascapular nerve due to prominence of the screw or bicortical drilling. The purpose of the present study was to evaluate whether monocortical fixation, without perforating the posterior glenoid cortex, would provide sufficient graft stability. METHODS: Coracoid transfer was performed in 14 scapula models (Sawbones®, Composite Scapula, 4th generation)...
January 13, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29330634/corrective-osteotomies-using-patient-specific-3d-printed-guides-a-critical-appraisal
#3
Wouter Rosseels, Michiel Herteleer, An Sermon, Stefaan Nijs, Harm Hoekstra
INTRODUCTION: Over the last decade, the technique of 3D planning has found its way into trauma surgery. The use of this technique in corrective osteotomies for treatment of malunions provides the trauma surgeon with a powerful tool. However, this technique is not entirely straightforward. We aimed to define potential pitfalls of this technique and possible solutions to overcome these shortcomings. MATERIALS AND METHODS: Ten patients with either a uni-, bi- or triplanar malunion of the long bones were included in this study...
January 12, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29327553/-preliminary-development-of-drill-template-assisted-placement-of-reverse-intramedullary-lag-screw-for-superior-ramus-of-pubis-using-three-dimentional-print-technique
#4
Yi Zheng, Xin-Hua Yuan, Wei-Bin Wang, Qing-Jiang Pang
OBJECTIVE: To investigate the feasibility of a drill template for the placement of reverse intramedullary lag screws on the outside of the pubis based on digital design and 3D printing technology. METHODS: The preoperative CT images of a 23-year-old male patient with pelvic fracture were collected retrospectively. According to the Young and Burgess classification, the type of pelvic fracture was LC IIwith the 3D printing technology. The data was reconstructed by 3D imaging reconstruction software to produce 1:1 three dimensional model...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29325943/neurosurgical-care-availability-and-access-in-low-and-middle-income-countries
#5
Maria Punchak, Swagoto Mukhopadhyay, Sonal Sachdev, Ya-Ching Hung, Sophie Peeters, Abbas Rattani, Michael Dewan, Walter D Johnson, Kee B Park
BACKGROUND: An estimated 5 billion people worldwide lack access to basic surgical care. In particular, the vast majority of low- and middle-income countries (LMICs) currently struggle to provide adequate neurosurgical services. Significant barriers exist, including limited access to trained medical, nursing and allied health staff, lack of equipment, and availability of services at reasonable distance and at reasonable cost to patients. An accurate assessment of current neurosurgical capacity in LIMCs is an essential first step in tackling this deficit...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29324688/on-multi-objective-based-constitutive-modelling-methodology-and-numerical-validation-in-small-hole-drilling-of-al6063-sicp-composites
#6
Junfeng Xiang, Lijing Xie, Feinong Gao, Yu Zhang, Jie Yi, Tao Wang, Siqin Pang, Xibin Wang
Discrepancies in capturing material behavior of some materials, such as Particulate Reinforced Metal Matrix Composites, by using conventional ad hoc strategy make the applicability of Johnson-Cook constitutive model challenged. Despites applicable efforts, its extended formalism with more fitting parameters would increase the difficulty in identifying constitutive parameters. A weighted multi-objective strategy for identifying any constitutive formalism is developed to predict mechanical behavior in static and dynamic loading conditions equally well...
January 11, 2018: Materials
https://www.readbyqxmd.com/read/29322987/complications-related-to-sitting-position-during-pediatric-neurosurgery-an-institutional-experience-and-review-of-literature
#7
Priyanka Gupta, Girija P Rath, Hemanshu Prabhakar, Parmod K Bithal
BACKGROUND: Sitting position is preferred during posterior fossa surgeries as it provides better anatomical orientation and a clear surgical field. However, its use has been declining due to its propensity to cause life-threatening complications. This study was carried out to analyze the perioperative complications and postoperative course of children who underwent neurosurgery in sitting position. MATERIALS AND METHODS: Medical records of 97 children (<18 years) who underwent neurosurgery in sitting position over a period of 12 years, were retrospectively analyzed...
January 2018: Neurology India
https://www.readbyqxmd.com/read/29322618/genome-enabled-metabolic-reconstruction-of-dominant-chemosynthetic-colonizers-in-deep-sea-massive-sulfide-deposits
#8
Shingo Kato, Takazo Shibuya, Yoshihiro Takaki, Miho Hirai, Takuro Nunoura, Katsuhiko Suzuki
Deep-sea massive sulfide deposits remaining after ceasing of hydrothermal activity potentially provide energy for a chemosynthetic ecosystem in the dark, cold marine environments. Although yet-uncultivated bacteria in the phylum Nitrospirae and the class Deltaproteobacteria are known to dominate the microbial communities of sulfide deposits at and below the seafloor, their metabolic capabilities remain largely elusive. Here, we reveal the metabolic potential of these yet-uncultivated bacteria in hydrothermally inactive sulfide deposits collected at the Southern Mariana Trough by seafloor drilling...
January 10, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29322103/a-national-survey-of-mri-safety-practices-in-ghana
#9
Albert Dayor Piersson, Philip Nii Gorleku
Objective: The aim of the present study was to assess current MRI safety practices among MRI facilities in Ghana, and their compliance with the 2013 American College of Radiology (ACR) guidance document on MR safe practices. Material and methods: A questionnaire developed from the 2013 ACR Guidance Document was used to collect information on magnetic field strengths, MR safety policy and compliance, patient screening, emergency preparedness, infection control, MRI safety accessories, equipment safety, signage and barriers, report of adverse incidents, and access and communication...
December 2017: Heliyon
https://www.readbyqxmd.com/read/29320489/study-of-gas-production-from-shale-reservoirs-with-multi-stage-hydraulic-fracturing-horizontal-well-considering-multiple-transport-mechanisms
#10
Chaohua Guo, Mingzhen Wei, Hong Liu
Development of unconventional shale gas reservoirs (SGRs) has been boosted by the advancements in two key technologies: horizontal drilling and multi-stage hydraulic fracturing. A large number of multi-stage fractured horizontal wells (MsFHW) have been drilled to enhance reservoir production performance. Gas flow in SGRs is a multi-mechanism process, including: desorption, diffusion, and non-Darcy flow. The productivity of the SGRs with MsFHW is influenced by both reservoir conditions and hydraulic fracture properties...
2018: PloS One
https://www.readbyqxmd.com/read/29316760/-analysis-on-occupational-noise-induced-hearing-loss-of-different-type-workers-in-underground-mining
#11
Q C Liu, C H Duo, Z Wang, K Yan, J Zhang, W Xiong, M Zhu
Objective: To investigate hearing loss status of blasters, drillers mechanics and so on in underground mining, and put forward suggestion diagnosis of occupational explosive deafness and occupational deafness. Methods: Underground excavation workers in a metal mine were recruited in this study, those with a history of ear disease and non-occupational deafness were all excluded. Finally, the features of pure tone audiometry of 459 noise-exposed workers were analyzed. Results: High-frequency hearing loss occurred on 351workers and the positive detection rate was 74...
November 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29313541/exploring-the-hydraulic-fracturing-parameter-space-a-novel-high-pressure-high-throughput-reactor-system-for-investigating-subsurface-chemical-transformations
#12
Andrew J Sumner, Desiree L Plata
Hydraulic fracturing coupled with horizontal drilling (HDHF) involves the deep-well injection of a fracturing fluid composed of diverse and numerous chemical additives designed to facilitate the release and collection of natural gas from shale plays. Analyses of flowback wastewaters have revealed organic contamination from both geogenic and anthropogenic sources. The additional detections of undisclosed halogenated chemicals suggest unintended in situ transformation of reactive additives, but the formation pathways for these are unclear in subsurface brines...
January 9, 2018: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29311564/gas-hydrate-dissociation-off-svalbard-induced-by-isostatic-rebound-rather-than-global-warming
#13
Klaus Wallmann, M Riedel, W L Hong, H Patton, A Hubbard, T Pape, C W Hsu, C Schmidt, J E Johnson, M E Torres, K Andreassen, C Berndt, G Bohrmann
Methane seepage from the upper continental slopes of Western Svalbard has previously been attributed to gas hydrate dissociation induced by anthropogenic warming of ambient bottom waters. Here we show that sediment cores drilled off Prins Karls Foreland contain freshwater from dissociating hydrates. However, our modeling indicates that the observed pore water freshening began around 8 ka BP when the rate of isostatic uplift outpaced eustatic sea-level rise. The resultant local shallowing and lowering of hydrostatic pressure forced gas hydrate dissociation and dissolved chloride depletions consistent with our geochemical analysis...
January 8, 2018: Nature Communications
https://www.readbyqxmd.com/read/29310817/dental-implant-navigation-system-guide-the-surgery-future
#14
Ting-Mao Sun, Ting-Hsun Lan, Chin-Yun Pan, Huey-Er Lee
No study has investigated the effect of learning curves on the accuracy of dental implant navigation systems. This study evaluated the accuracy of the dental implant navigation system and established the learning curve according to operation site and operating time. Each dental model was used for drilling 3 missing tooth positions, and a patient tracking module was created. The same dentist performed the drilling test for 5 sets of dental models. CT back scanning was performed on the dental models. Customized implants based on the drilled holes were inserted...
January 2018: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29305754/estimating-the-creation-and-removal-date-of-fracking-ponds-using-trend-analysis-of-landsat-imagery
#15
Rutherford V Platt, David Manthos, John Amos
Hydraulic fracturing, or fracking, is a process of introducing liquid at high pressure to create fractures in shale rock formations, thus releasing natural gas. Flowback and produced water from fracking operations is typically stored in temporary open-air earthen impoundments, or frack ponds. Unfortunately, in the United States there is no public record of the location of impoundments, or the dates that impoundments are created or removed. In this study we use a dataset of drilling-related impoundments in Pennsylvania identified through the FrackFinder project led by SkyTruth, an environmental non-profit...
January 5, 2018: Environmental Management
https://www.readbyqxmd.com/read/29305425/a-systematic-review-of-current-osteoporotic-metaphyseal-fracture-animal-models
#16
R M Y Wong, M H V Choy, M C M Li, K-S Leung, S K-H Chow, W-H Cheung, J C Y Cheng
OBJECTIVES: The treatment of osteoporotic fractures is a major challenge, and the enhancement of healing is critical as a major goal in modern fracture management. Most osteoporotic fractures occur at the metaphyseal bone region but few models exist and the healing is still poorly understood. A systematic review was conducted to identify and analyse the appropriateness of current osteoporotic metaphyseal fracture animal models. MATERIALS AND METHODS: A literature search was performed on the Pubmed, Embase, and Web of Science databases, and relevant articles were selected...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29304960/editorial-commentary-arthroscopic-hip-ligamentum-teres-reconstruction-reality-or-mythology
#17
EDITORIAL
Ali S Bajwa, Richard N Villar
The ligamentum teres (LT) is perceived to contribute to hip stability and proprioception. LT incompetence can lead to pain and instability, which may play a role in chondral damage. Hip arthroscopy plays a role in diagnosing and treating LT tears. Reconstruction of the LT is feasible, but careful attention needs to be paid to tunnel positioning, graft material, graft length, and fixation methods. An anatomic femoral tunnel should exit at the fovea capitis on the femoral side, whereas the location for safe placement of the acetabular attachment is thought to be in the posteroinferior part of the cotyloid fossa...
January 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29304127/do-experts-practice-what-they-profess
#18
Yun Zhou, Sudanthi Wijewickrema, Ioanna Ioannou, James Bailey, Gregor Kennedy, Debra Nestel, Stephen O'Leary
We investigated the variation of drilled regions of expert and trainee surgeons performing virtual temporal bone surgery to identify their compliance with standard drilling procedures. To this end, we recruited seven expert and six trainee ENT surgeons, who were asked to perform the surgical preparations for cochlear implantation on a virtual temporal bone. The temporal bone was divided into six regions using a semi-automated approach. The drilled area in each region was compared between groups using a sign test...
2018: PloS One
https://www.readbyqxmd.com/read/29304036/a-novel-molecular-toolkit-for-rapid-detection-of-the-pathogen-and-primary-vector-of-thousand-cankers-disease
#19
Emel Oren, William Klingeman, Romina Gazis, John Moulton, Paris Lambdin, Mark Coggeshall, Jiri Hulcr, Steven J Seybold, Denita Hadziabdic
Thousand Cankers Disease (TCD) of Juglans and Pterocarya (Juglandaceae) involves a fungal pathogen, Geosmithia morbida, and a primary insect vector, Pityophthorus juglandis. TCD was described originally from dying Juglans nigra trees in the western United States (USA), but it was reported subsequently from the eastern USA and northern Italy. The disease is often difficult to diagnose due to the absence of symptoms or signs on the bark surface of the host. Furthermore, disease symptoms can be confused with those caused by other biotic and abiotic agents...
2018: PloS One
https://www.readbyqxmd.com/read/29302755/heat-generation-by-ultrasonic-bone-curette-comparing-with-high-speed-drill
#20
Kengo Suzuki, Masahiko Wanibuchi, Yoshihiro Minamida, Yukinori Akiyama, Takeshi Mikami, Masahito Fujishige, Akinori Yamamura, Toshio Nakagawa, Nobuhiro Mikuni
BACKGROUND: Ultrasonic bone curettes have been used as with high-speed drills. However, the amount of heat generated by the ultrasonic bone curette is not well known. This study quantitatively assessed the heat generated by an ultrasonic bone curette and compared it to that by a high-speed drill. METHODS: The thermal change in a swine skull during bone curetting using an ultrasonic device and a high-speed drill were assessed. The investigation focused on the type of surgical manipulation (brush-like strokes vs...
January 4, 2018: Acta Neurochirurgica
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