bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tailored treatment of intestinal angiodysplasia in elderly
Authors: Compagna Rita , Serra Raffaele , Sivero Luigi , Quarto Gennaro , Vigliotti Gabriele , Bianco Tommaso , Rocca Aldo , Amato Maurizio , Danzi Michele , Furino Ermenegildo , Milone Marco , Amato Bruno 
Published: March 2017

Abstract
Background: Angiodysplasia of the gastrointestinal tract is an uncommon, but not rare, cause of bleeding and severe anemia in elderly. Different treatments exist for this kind of pathology.
Methods: The aim of this work was to study 40 patients treated for intestinal angiodysplasia with two different kind of endoscopic treatments: argon plasma coagulation (APC) and bipolar electrocoagulation (BEC).
Results: Age of patients was similar in both groups (76,2 ± 10.8 years vs 74,8 ± 8,7 years, P = 0,005). Angiodysplasia treated were located in small bowel, right colon, left colon, transverse colon and cecum. We analysed number of treatment, recurrence, hospital discharge, needs of blood transfusions before and after endoscopic treatment. Number of treatment was the same in both groups (1,2 ± 0,2 vs 1,1 ± 0,1, P < 0,001). We had more recurrence in patients treated with BEC (4/20 vs 2/20, P < 0,001). Hospital discharge was comparable in both groups (5,3 ± 3,1 days vs 5,4 ± 2,8 years, P < 0.001)
Conclusions: Treatment of angiodysplasia in elderly is not easy. Different kinds of treatment could be adopted. APC and BEC are both safe and effective. The choice of a treatment should consider several factors: age, comorbidity, source of bleeding. In conclusion we think that treatment of bleeding for angiodysplasia in elder population should be a tailored treatment.
Pulmonary arterovenous malformation causing
hemothorax in a pregnant woman without Osler-
Weber-Rendu syndrome
Authors: Di Crescenzo Vincenzo , Napolitano Filomena , Vatrella Alessandro , Zeppa Pio , Laperuta Paolo 
Published: March 2017

Abstract
Pulmonary arteriovenous malformations
(PAVMs), although most commonly congenital, are
usually detected later in life. Case report: We present a
case of a 19-year-old woman with no previous history
of AVM or telangiectasia, who presented dyspnea and
hypoxia by massive left hemothorax in the 34th week of
gestation. After emergent cesarean delivery, a chest computed
tomography (CT) with i.v. contrast showed a likely
3 cm area of active contrast in left lower lung. Chest tube
placement revealed about 2 liters of blood. The patient was
subsequently found to have pulmonary AVM. A successful
embolisation of AVM followed by lung atipic resection
involving AVM and decortication for lung re-expansion
were the treatments provided. Conclusions: Women with
known pulmonary AVM should be maximally treated prior
to becoming pregnant, and the physician should be alert
to complications of pulmonary AVM during pregnancy.
Canine transmigration accompanying mandibular retrognathism secondary to osteitis
Authors: Koszowski Rafał , Pisulska-Otremba Agnieszka , Wójcik Sylwia , Śmieszek-Wilczewska Joanna 
Published: March 2017

Abstract
Transmigration is a tooth pathology in which the migrating tooth bud passes the median plane. Methods: This study is a presentation of the diagnostic and therapeutic outcomes in the cases of 4 stomach teeth transmigrations diagnosed in 3 patients with mandibular retrognathia which was a complication after osteitis in the postnatal period and infancy. Results: Extending imaging diagnostics to include CT, most preferably CBCT, makes it possible to precisely evaluate a transmigrated canine’s position and to plan a course of treatment. Conclusions: Planning of the treatment of teeth in transmigration in patients with temporomandibular ankylosis should be done by a team consisting of an orthodontist and a surgeon.
Adenotonsillotomy Versus Adenotonsillectomy in Pediatric Obstructive Sleep Apnea: An RCT
Authors: Borgström Anna , Nerfeldt Pia , Friberg Danielle 
Published: March 2017

BACKGROUND:
Adenotonsillectomy (ATE) is a well-established and effective treatment of pediatric obstructive sleep apnea (OSA). In recent years, a more conservative method, adenotonsillotomy (ATT), has gained popularity because it is associated with less postoperative morbidity. Yet no previous randomized study has compared these 2 methods regarding their effectiveness in treating pediatric OSA in terms of polysomnographic data, which was the primary aim of this study. The hypothesis was that ATT is noninferior to ATE after 1 year.

METHODS:
Seventy-nine children, aged 2 to 6 years, with OSA (Apnea-Hypopnea Index [AHI] 5–30) were randomized to ATT (n = 40) or ATE (n = 39). Polysomnography (PSG) and questionnaire OSA-18 were assessed at baseline and 1 year postsurgery.

RESULTS:
Mean difference between groups in the primary outcome, change in AHI, was 0.83, 95% confidence interval –3.2 to 4.9, not exceeding the noninferiority margin of 5. After ATE, AHI decreased from median 12.7 (interquartile range 8.3–19.1) to 2.0 (1.2–3.1) and after ATT from 15.8 (8.5–21.2) to 4.0 (1.2–5.1). For both groups, significant improvements of PSG and OSA-18 questionnaire outcomes were observed, with no significant differences between groups. Five children (13%) in the ATT group needed repeated surgery for tonsil regrowth and recurrence of OSA.

CONCLUSIONS:
The results suggest that ATT is noninferior to ATE in treating pediatric OSA regarding PSG outcomes after 1 year. ATT could be considered an alternative to ATE for treatment of pediatric OSA. However, after ATT, there is a nonnegligible risk of recurrence of OSA, and this should be taken into account when selecting surgical method.
Orchids distribution and bioclimatic niches as a strategy to climate change in areas of tropical dry forest in Colombia
Authors: Reina-Rodríguez Guillermo A. , Rubiano Mejía Jorge E. , Castro Llanos Fabio A. , Soriano Ignasi 
Published: March 2017

Las proyecciones del cambio climático en Colombia, indican en promedio un incremento en 2.6°C de temperatura y 20% de la precipitación para el fin del siglo. Estos cambios afectarán directamente al bosque seco tropical (Bs-T) y su biodiversidad. Las orquídeas epífitas, más expuestas a la atmósfera que la biota terrestre mantienen dependencia de variables ligadas al clima. Esta condición las hace particularmente susceptibles al cambio climático. Nosotros estudiamos los cambios espacio-temporales de un grupo focal de 12 especies de orquídeas típicas del (Bs-T) en Colombia y las futuras áreas de conservación de este ecosistema. El algoritmo usado por MaxEnt fue empleado para el modelamiento. Un total de 439 registros: observaciones directas (276); registros de herbario (159) y fuentes bibliográficas (4), colectadas desde septiembre de 2009 hasta abril 2015 fueron consideradas para entrenar el modelo. El nicho potencial actual fue comparado con el escenario de emisiones de cambio climático SRES 8.5 para dos periodos: 2020–2049 (2030) y 2040–2069 (2050). Los resultados indican un desplazamiento altitudinal respecto al presente, condicionado por variables como: temperatura, accesibilidad, y precipitación. Las áreas de montaña media (1300–1700 m) incrementarán su idoneidad en los modelos de nicho potencial futuro (2030 y 2050) en detrimento de las tierras bajas (0–1000 m). Otras variables analizadas como umbrales de distancia en polinizadores (euglossini), disponibilidad de forófitos, distancias a coberturas de Bs-T y áreas protegidas, sugieren mejorar la conectividad entre tierras bajas y áreas de montaña media. En consecuencia, los nichos bioclimáticos (BN) son propuestos como una nueva unidad de manejo del paisaje. En todo el país, 69 de ellos fueron localizados como estrategia de adaptación-conservación frente al cambio climático en áreas de Bs-T en Colombia.
Are Novel Allergen or Hydrolysed Diets an Effective Means of Reducing the Gastro-intestinal Signs in Dogs With Inflammatory Bowel Disease When Compared to Oral Prednisolone?
Authors: Swallow Adam 
Published: March 2017

Clinical bottom line
Novel allergen or hydrolysed diets are a valid modality for the management of gastro-intestinal symptoms in dogs with chronic enteropathy, however bias in case selection in the literature means a direct comparison of dietary modification versus prednisolone was not able to be achieved. Further prospective trials would be needed to better answer this PICO.
The NICU Environment: Infusing Single-Family Room Benefits into the Open-Bay Setting
Authors: Meredith Jenna L. , Jnah Amy , Newberry Desi 
Published: March 2017

AbstractTwo distinct architectural designs are found in today’s NICUs—the open-bay (OPBY) and the single-family room (SFR) designs. When neonatology was recognized as a medical subspecialty in the 1970s, the OPBY design was the only platform offered to neonates and families. The OPBY design facilitated communication between staff, collegiality, and interprofessional collaboration among members of the neonatal team. Over time, pitfalls to the design were recognized, including increased transmission of sound and light. As a result, the SFR design emerged offering a family-centered, customizable environment. Through recognition and adoption of best practices, the neurodevelopmental benefits to SFRs can be infused within the OPBY unit. This article aims to identify best practices to infuse the benefits of SFR design (such as low light, low sound, and less overstimulation) into the OPBY NICU to reduce negative stimulation and optimize developmental outcomes for vulnerable neonates.
Prevalence of mesiodens among 6-14 year school children
Authors: Peediayil Faizal , Kottayi Soni , Jose Deepak , Sreenivasan Prathima , Babu Arun , Hashim Aysha , Khader Deema Abdul 
Published: March 2017

Mesiodens are considered as one of the most common supernumerary teeth. The main objective of the study was to determine the prevalence rate of mesiodens in the school going children between the age group of 6-14 years The study shows a prevalence rate of 0.7% with sex ratio of 2:1 favouring males.
Microbiological analysis of absorbent paper points employed by undergraduate students from a dental school in south of Brazil
Authors: Da Silva Paula Barcellos , Só Gabriel Barcelos , Só Bruna Barcelos , Lang Pauline Mastella , Montagner Francisco , Pereira Jefferson Ricardo , De Figueiredo José Antônio Poli , Só Marcus Vinícius Reis 
Published: March 2017

Aim: The aim of this study was identify contamination on absorbent paper points used by students of Dental Clinic III of the Faculty of Dentistry of Federal University of Rio Grande do Sul in the semester 2015/1, in order to warn students and professionals of the area on the importance to sterilize these materials.Material and Methods: In a clinical environment, 180 absorbent paper points we collected (80 of them from the first series and 80 from the second one), from 40 students. After the collection, each one was singly immersed in a microtube containing 1.5 ml of the BHI (Brain Heart Infusion) culture. Positive control was composed by one paper point contaminated by saliva, and negative control was composed by a closed microtube, only with BHI. The microtubes were incubated at 37ºC in bacteriological incubator during 14 days. The microtubes that presented turbidity were considered positive, and those which did not present turbidity were considered negative.Results: The results were analyzed by the Fisher Exact Test, which demonstrated that paper points from the second series presented higher agreement contamination between the paper points collected from each box, when compared to the analyzed boxes from the first series (p=0.03). All the samples observed presented growth of Bacillus spp in the microorganism identification. Conclusions: It is possible conclude that absorbing paper points, when exposed to clinical environment suffer contamination, and the autoclave sterilization is necessary before the use, regardless the commercial brand, in order to ensure the aseptic chain maintenance.
Applications of Viscosity-Building Friction Reducers as Fracturing Fluids
Authors: Van Domelen Mark , Cutrer Wayne , Collins Steve , Ruegamer Michael 
Published: March 2017

Abstract
The use of viscosity-building friction reducers (VFR) as fracturing fluids is increasing in the industry today (Motiee et al. 2016; Sanders, et al. 2016; Al-Muntasheri, et al. 2014, Holtsclaw, et al. 2010). In addition to providing pipe friction reduction during fracturing treatments, these systems develop elevated viscosity over traditional slickwater fluids to provide several advantages described herein. Additionally, using advances made in polymer chemistry such as fit for purpose monomer structures and effective breakers, VFR fluids exhibit high regain conductivities compared to linear and crosslinked gels and are being used as a direct replacement for these conventional guar-based systems.
The polyacrylamide-based VFR system described in this paper has been used on over 10,000 stages in multiple basins since 2014. Some of the potential advantages VFR fluids offer include lower cost, reduced water requirements compared to conventional slickwater treatments, fewer chemicals and equipment on location, on-the-fly design change flexibility, and high fracture conductivities. This paper will present three case histories from projects performed recently to demonstrate these advantages.
A Rock-on-a-Chip Approach to Study Fluid Invasion and Flowback in Liquids-Rich Shale Formations
Authors: He Kai , Xu Liang , Kenzhekhanov Shaken , Yin Xiaolong , Neeves Keith B. 
Published: March 2017

Abstract
Understanding the dynamic process of fluid invasion and flowback has significant technological implications in developing shale plays. One of the physical models used to study this process is coreflooding, which mimics the process of fracturing fluid invasion, flowback, and hydrocarbon recovery from shale formations. However, coreflooding is time consuming, expensive, and unable to provide insights to the underlying physics at the pore scale level in most instances.
Rock-on-a Chip (ROC), based on microfluidic technology, is an emerging approach that provides a new method to study fracturing fluid invasion and flowback affected by the petrophysical properties using direct visualization and measurement. In this study, the porous matrix, representing shale formations, and single large channel, representing hydraulic fractures or natural fractures, were defined in an oil-wet microfluidic chip; the drainage-imbibition cycles that are analogous to fracturing fluid invasion and subsequent flowback were measured by optical microscopy. Specifically, the effect of interfacial tension and fracture patterns ("half" fracture and "S" fracture) on the fluid invasion factor and flowback efficiency was examined.
The results show that the invasion factor and flowback efficiency correlated well with the capillary pressure of fracturing fluids. In addition, model fractures have a major effect on the flowback. In particular, the invasion factor and flowback efficiency of the water-based fracturing fluids were significantly impaired in the "S" fracture pattern, as compared to homogeneous and half fracture patterns. Notably, by improving fluid mobility between the porous matrix and fractures, the addition of a surfactant to the fracturing fluids significantly enhanced the fluid invasion and flowback in all of the fracture patterns. The results demonstrate that the ROC model proposed in this work can be used to study the flowback process affected by properties such as wettability, permeability, initial water saturation, and reservoir pressure. Consequently, it has potential for guiding water management and chemical treatment in hydraulic fracturing.
Development of a Cement Repository to Improve the Understanding of Well Integrity Behavior with Time
Authors: Ichim Adonis , Teodoriu Catalin 
Published: March 2017

Abstract
Well integrity is becoming a subject of increasing interest with current developments in technical, political and social aspects echoing over the oil and gas industry. Both onshore and offshore activities are strongly constrained by the operator's ability to provide solid facts regarding their well integrity over the life of the well. As a result of new technologies, the life of the well has increased, generating new questions about novel integrity tiers.
This paper presents the new cement repository that is currently under development at OU. The concept is to create a physical storage unit as well as a cement database to hold cement samples for a minimum of 5 years after well spud. All information will be stocked on a custom-made database, whereas the cement samples will be kept in a special "cement bank" - holding the cement samples under constant in-situ pressure. The cement samples can be taken during normal cementation jobs at the well site, transported using a "for purpose" developed mobile autoclave system and stored in the special units that will be built at OU. Additional samples (reference units) will be manufactured at the OU Well Integrity Laboratory.
The paper will demonstrate that in case of any wellbore integrity issues, wellbore owners will have immediate access to accurate cement properties that can be used to perform numerical studies on the wellbore cement situation.
Capillary Pressure, Fluid Distribution, and Oil Recovery in Preserved Middle Bakken Cores
Authors: Karimi Somayeh , Kazemi Hossein , Simpson Gary A. 
Published: March 2017

Abstract
Understanding reservoir rock characteristics and the forces that mobilize oil in unconventional reservoirs are critical in designing oil recovery schemes. Thus, we conducted laboratory experiments in three preserved Middle Bakken cores using centrifuge and nuclear magnetic resonance (NMR) instrument to understand oil recovery mechanisms in the Bakken. Specifically, we measured capillary pressure, pore size distribution, and oil and brine distributions.
A series of oil and brine replacement experiments (drainage and imbibition) were conducted in the preserved cores using a high-speed centrifuge. T2 time distribution and one-dimensional saturation profile measurements were obtained using a 2-MHz nuclear magnetic resonance instrument before and after centrifuge experiments. Moreover, pore size distribution was determined from Mercury Intrusion Capillary Pressure (MICP) and Nitrogen Gas Adsorption experiments. We conducted scanning electron microscope (SEM) imaging on polished core slabs to determine pore shapes and mineralogy of pore walls using a field emission-scanning electron microscope (FE-SEM).
Our measurements show that, contrary to the common notion, the preserved Middle Bakken cores are not oil-wet—but show mixed-wet characteristics. Water resides in smaller pores and oil resides in larger pores in all experiments. Using a low-salinity synthetic brine of 50,000-ppm to surround Bakken cores of much higher salinity, we produced up to 6.33 % (of pore volume) oil from two higher porosity (~8%) cores, and 10.72% (of pore volume) oil from one lower porosity (~2%) core in spontaneous imbibition experiment. Moreover, up to 6.62 % (pore volume) oil from the two higher porosity cores and 11.23% (of pore volume) oil from the lower porosity core was produced in forced imbibition experiment. These experiments indicate that chemical osmosis overrides the wettability effects in tight Middle Bakken cores. The new observations regarding osmosis have altered our classical notion of capillary imbibition in shale reservoirs.
Gas Lift Production Benchmarking Using IPR Risked Inflow Modeling: Case Study
Authors: Bagci Suat 
Published: March 2017

Abstract
Ensuring effective production benchmarking studies and field management requires a through and continuing understanding of the reservoir performance. Deviations from anticipated performance must be recognized and, if necessary, corrected before they impact the expected life cycle performance and value of the project.
This study was performed to establish (Inflow Performance Relationship) IPR risked modeling for a variety of completion options and to assess the likely well performance under gas lift production benchmarking of a field. The IPR risked inflow modeling used the Monte Carlo simulation method to define the range of potential outcomes associated with uncertainties in key reservoir and completion input data. Skin data for the completion options being considered, i.e., Open Hole Gravel Pack (OHGP), Cased Hole Frac-Pack (CHFP) and Cased Hole Gravel Pack/Internal Gravel Pack (CHGP/IGP) were then used to establish the probabilistic distribution, which could then be used in combination with reservoir uncertainty data to perform the risk-based inflow modeling.
The results of the risk-based IPR modeling showed that the completion options for the CHFP proved to be the best overall performer. The CHGP/IGP completion proved to be the least effective, primarily because of the high skin associated with this type of completion. The OHGP completion compared closely to the CHFP, but the greater probability of higher skin resulted in poorer performance compared to the CHFP.
Tornado analysis was carried out to highlight the parameter leading to the greatest uncertainty in well performance. This analysis proved that permeability, in most cases, had greater negative impact on well performance than skin when there was a higher permeability layer in the reservoir. It should be noted that this can reverse; skin can be the most significant negative factor for lower permeability ranges. In all cases, skin had the greatest positive impact on well performance due to negative values of skin for all completion types. To validate the model, well test data was used to validate the probabilistic skin model results for CHFP completion.
The gas lift modeling was carried out based on IPR Risked inflow modeling to reduce the gas lift design uncertainties for vertical and deviated wells. Gas lift was extremely beneficial in the lower productivity index (PI) or higher water cut (WC) wells. Impact of gas injection depth on oil production was assessed for each reservoir layer at various stages of the field life.