bluuebunny/crossref_metadata_2025 huggingface dataset:
The Role of Coping in the Relationship Between Endorsement of the Strong Black Woman Schema and Depressive Symptoms Among Black Women
Authors: Jones Martinque K. , Hill-Jarrett Tanisha G. , Latimer Kyjeila , Reynolds Akilah , Garrett Nekya , Harris Ivyonne , Joseph Stephanie , Jones Alexis
Published: June 2021

The Strong Black Woman (SBW) schema has been consistently linked to negative mental health outcomes among Black women. However, few have begun to explicate the mechanisms by which the endorsement of the SBW schema may influence mental health outcomes. Accordingly, the current study examined coping styles (social support, disengagement, spirituality, and problem-oriented/engagement) as mediators in the association between endorsement of the SBW schema and depressive symptoms in a sample of Black women. Data from 240 Black women ( Mage = 22.0, SD = 4.0 years) were collected assessing SBW schema endorsement, coping styles, and depressive symptoms. Parallel multiple mediation analysis was conducted using PROCESS Macro. Of the four coping styles examined, disengagement coping partially mediated the association between greater endorsement of the SBW schema and greater depressive symptoms. Study findings add depth to our understanding of the association between the SBW schema and mental health outcomes and lend themselves to research and clinical implications.
What Psychology Students Want From Service-Learning
Authors: Valdez Christine E. , Lovell Jennifer L.
Published: June 2021

Background:

Limited research has examined how service-learning (SL) outcomes align with learning goals proposed for the undergraduate psychology major by the APA Board of Educational Affairs Task Force on Psychology Major Competences.

Objective:

To obtain student perspectives of SL, and to evaluate learning and inform curriculum development of SL specific to psychology learning goals.

Method:

Undergraduate psychology students ( N = 400) participated in a concurrent mixed-methods survey examining empathy, civic engagement, and professional identity between students who had and had not taken an upper-division SL course.

Results:

SL students reported increased engagement with APA learning goals of Ethical and Social Responsibility and Professional Development compared to students who did not take SL. SL students scored higher on civic engagement behaviors and professional identity. Students reported wanting more exposure to a range of psychology subdisciplines, various service opportunities, and multicultural diversity to support professional development.

Conclusion:

SL is a high-impact teaching practice that aligns with psychology learning goals.

Teaching Implications:

Findings informed the development of a generalist psychology SL course that introduced students to different domains of psychology. We discuss how to integrate learning activities to increase multicultural and other awareness, motivate social justice action, enhance career clarification, and increase professional self-efficacy.
The Bank Robbery: A Behavioral Observation Exercise for Enhancing Understanding of Reliability
Authors: Strelan Peter
Published: June 2021

Background:

The concept of reliability is central to conducting—and understanding—research in Psychology. Students’ understanding of concepts are strengthened when they learn by applying concepts.

Objective:

This article describes initial evidence of an activity for teaching reliability.

Method:

Students watched a short video of a staged bank robbery. They then tested the reliability of two different forms of police instructions for eyewitness recall. In so doing, they gained practice at calculating and interpreting inter-rater reliability and test-retest reliability.

Results:

Data collected from N = 191 students indicates that the exercise has a statistically significant positive effect on student understanding of and confidence about reliability concepts contributes to a roughly 20% increase in performance when comparing responses on pre- and post-exercise multiple choice questions.

Conclusion:

The activity gives students practice with the concept of reliability in a way that is engaging and memorable insofar as it demonstrates the implications of reliability for the real world.

Teaching Implications:

The activity is straightforward to implement and encourages students to learn by “doing.”
Stenotic lesions of aorta: Imaging evaluation using multidetector computed tomography angiography
Authors: Sharma Arun , Ojha Vineeta , Pandey Niraj N , Sinha Mumun , Malhi Amarinder S , Chandrashekhara SH , Kumar Sanjeev , Sharma Gautam
Published: June 2021

Aortic involvement can be secondary to various pathologic disease processes. These may result in stenotic or aneurysmal aortic lesions with a varied spectrum of imaging findings including intra-luminal, mural, and periaortic changes along with associated loco-regional or distal changes, depending on the etiology. Multidetector computer tomography with its recent advances has become the frontline imaging modality for the evaluation of aortic pathologies. Comprehensive evaluation of the aortic pathology with simultaneous evaluation of lungs, bones, and visceral organs is possible with a single multidetector computer tomography acquisition. It allows accurate primary diagnosis, identifies important anatomic landmarks and relationships, and identifies associated cardiovascular anomalies. Moreover, it serves as an adjunct in diagnosis of various complications, helps in treatment planning and detection of disease progression during follow-up.
A Device to Measure Profile Angle Clinically: Profilometer
Authors: Singh Pavankumar R , Ambekar Anand S , Kangane Suresh K
Published: June 2021

In orthodontic diagnosis and treatment planning, soft tissue profile assessment is of prime importance. Due to the emerging soft tissue paradigm, greater emphasis has been given to the clinical examination of soft tissue function and esthetics. Various cephalometric and photographic methods were introduced in the past to assess and measure profile angle and other facial angles. Our new device, that is, profilometer, helps to measure profile angle clinically.
Marx’s geopolitical economy: ‘The relations of producing nations’
Authors: Desai Radhika
Published: June 2021

This short article explores the conception of the international relations of the capitalist world embedded in the last section of the Grundrisse, titled ‘Bastiat and Carey’. It shows that, contrary to the widespread tendency to take Marx as a theorist of ‘globalization’, Marx actually took the existence of nation-states and national economies seriously and conceived of their interrelations as arising from the contradictions of capitalism.
Development of a Performance-Related Framework for Asphalt Mixture Design for the Illinois Tollway
Authors: Jahangiri Behnam , Rath Punyaslok , Majidifard Hamed , Buttlar William G.
Published: June 2021

Various agencies have begun to research and introduce performance-related specifications (PRS) for the design of modern asphalt paving mixtures. The focus of most recent studies has been directed toward simplified cracking test development and evaluation. In some cases, development and validation of PRS has been performed, building on these new tests, often by comparison of test values to accelerated pavement test studies and/or to limited field data. This study describes the findings of a comprehensive research project conducted at Illinois Tollway, leading to a PRS for the design of mainline and shoulder asphalt mixtures. A novel approach was developed, involving the systematic establishment of specification requirements based on: 1) selection of baseline values based on minimally acceptable field performance thresholds; 2) elevation of thresholds to account for differences between short-term lab aging and expected long-term field aging; 3) further elevation of thresholds to account for variability in lab testing, plus variability in the testing of field cores; and 4) final adjustment and rounding of thresholds based on a consensus process. After a thorough evaluation of different candidate cracking tests in the course of the project, the Disk-shaped Compact Tension—DC(T)—test was chosen to be retained in the Illinois Tollway PRS and to be presented in this study for the design of crack-resistant mixtures. The DC(T) test was selected because of its high degree of correlation with field results and its excellent repeatability. Tailored Hamburg rut depth and stripping inflection point thresholds were also established for mainline and shoulder mixes.
A rare case of syncronous solitary para-pharyngeal metastasis of clear cell carcinoma in a patient with small renal mass
Authors: Gallo Fabrizio , Gastaldi Emilio , Ninotta Gaetano , Baricalla Federico , Pastorino Alessandra , Venturino Ezio , Schenone Maurizio
Published: June 2021

Introduction:

Unusual metastatic sites of renal cell carcinoma (RCC) are not infrequent. We report a rare case of solitary pharyngeal metastasis as first presentation of RCC.

Case description:

A 74 years-old man was referred to our hospital due to rapidly progressive dyspnoea and dysphagia. Physical examination showed a large right para-pharyngeal mass. Imaging findings showed a 5.5 cm mass, suspicious for malignancy, which extended to right para and retro-pharyngeal spaces with compression of the major right cervical vessels, C2-C3 vertebral bodies osteolysis, dural sac compression and dislocation. Futhermore, a small (2.6 × 2 cm) mass located at the upper pole of the right kidney was shown. Patient underwent partial trans-oral removal of the mass. Pathological examination and immunochemistry resulting strongly suggestive for metastatic RCC. Considering the metastatic stage of the tumour and the rapidly progressive clinical worsening with poor performance status, we offered the patient a palliative treatment with tyrosine kinase and cytoreductive radiotherapy on vertebral bodies. The patient developed a rapidly progressive multifocal metastatic disease and died 4 months after the presentation.

Conclusion:

We think that our case is noteworthy for some aspects. Firstly, pharyngeal localizations of RCC are very rare and this is the first case of solitary pharyngeal metastasis. Secondly, this metastatic lesion was really particular because it was synchronous and twice as big than the primary tumour. Thirdly, this case is consistent with previous evidence that synchronous compared with metachronous metastasis RCC is associated with adverse effect on outcome and response to targeted treatment.
3D-printed construct from hybrid suspension as spatially and temporally controlled protein delivery system
Authors: Wang Jiangtao , Xie Baojun , Zhu Zicai , Xie Guijun , Luo Bin
Published: June 2021

Protein delivery systems have been extensively applied in controlled releasing of protein or polypeptides for therapeutic treatment or tissue regeneration. While 3 D printing technology shows great promise in novel dosage form with tailoring dose size and drug release profile, 3 D printable protein delivery system has to face many difficult challenges. In this study, we developed a hybrid suspension combining Eudragit polyacrylate colloid as matrix material and Pluronic polyether hydrogel as diffusion channel for protein release. This hybrid suspension can be 3 D-printed into construct with complex shape and inner structures thanks to its pseudoplastic and thixotropic rheological properties. The protein can be incorporated in hybrid suspension either in its original or nanoparticle capsulated form. The experiment shows that the protein release from construct is a function of drying time, molecular weight (MW) of chitosan, as well as their own structural/diffusional properties. Also, the theoretical derivation suggests polyacrylate matrix tortuosity, chitosan erosion rate as well as hydrogel diffusion coefficient all contributed to the extended duration of release profile. In addition, cytotoxicity test through cell culture confirmed that the construct fabricated from hybrid suspension exhibit relative good bio-compatibility. Finally, heterogeneous constructs with zoned design were fabricated as protein delivery system, which demonstrated the capability of hybrid suspension technique for spatial and temporal release of macromolecular drugs to realize pharmaceutical effectiveness or guild cell organization.
Effects of Online Heterosexist Experiences on Physical and Mental Health in Sexual Minorities: An Examination of the Cognitive and Affective Mechanisms
Authors: Chan Randolph C. H.
Published: June 2021

Cyber violence has emerged as a new source of minority stress over the past decade. Due to the anonymous and unrestrictive nature of the internet, cyber violence is even more blatant and pervasive than in person violence for sexual minority individuals. The present study aimed to examine whether and how online and offline experiences of heterosexism are related to physical and mental health. A total of 941 sexual minority individuals participated in a community-based online survey study. The findings indicated that online heterosexist experiences explained variance in physical and mental health, beyond the contribution of offline heterosexist experiences. Among sexual minority young adults, the effect of online heterosexist experiences on mental health was stronger than that of offline heterosexist experiences, whereas the association between online heterosexist experiences and health problems was not observed in the adult sample. The results of mediation analysis showed that heterosexist experiences were related to heightened expectations of rejection, which, in turn, were related to poor physical and mental health. The association of heterosexist experiences and mental health was also mediated by negative affect. Given the detrimental effect of online heterosexist experiences, effective interventions are needed to combat cyber violence motivated by sexual orientation and enhance the coping and confrontation strategies in response to harmful online content.
Temporal Dominance: Controlling Activity Cycles When Time Is Scarce, Sudden, and Squeezed
Authors: Jensen Jared T. , Rolison Shelbey L. , Barbour Joshua B.
Published: June 2021

Constant interaction, digital interruptions, and shrinking time to think and act characterize much of present-day communication. The management of time pressures is a key concern for contemporary workers as work responsibilities encroach on each other and other domains of life. This study focuses on how individuals and collectives try to exert control over time through communication. An analysis of observational and interview data ( N = 26) at a health research organization revealed that workers encountered cyclical, pervasive temporal structures marked by commotion: a blur of jarring, immediate tasks that require intense communication. As workers sought to make time for sustained focus, these pervasive temporal structures stymied their efforts. The findings contribute to communication theory by illuminating relationships among organizing, time, and control. This study provides metalanguage that facilitates the description and examination of temporal activity, and it describes a form of temporal control that was evident across hierarchal roles. Power differences explained the efficacy and agency of team members’ choices to manage busy, disrupted, and fast-paced work.
Preliminary safety study of the Automated Wearable Artificial Kidney (AWAK) in Peritoneal Dialysis patients
Authors: Htay Htay , Gow Sheena K , Jayaballa Mathini , Oei Elizabeth L , Chan Choong-Meng , Wu Sin-Yan , Foo Marjorie WY
Published: June 2021

Background:

Regeneration of peritoneal dialysis (PD) fluid using sorbent technology can provide flexibility and improve quality of life. This study examined the safety and efficacy of the automated wearable artificial kidney (AWAK) device in PD patients.

Methods:

This pilot study included prevalent PD patients from a single center in Singapore between 2016 and 2018. Participants underwent up to nine AWAK therapies over 72 h and were followed up for 1 month. Primary outcomes were serious adverse events (SAEs) and completion of nine therapies without device deficiency. Secondary outcomes were weekly peritoneal Kt/ V urea, solutes clearance and adverse events (AEs).

Results:

Twenty-one patients were screened and 15 were included in the study. Device alterations were required to overcome issues including flow occlusions initially, which resulted in three cohorts ( n = 2, 2 and 11 respectively). No SAEs were observed during the study and at the follow-ups. Common AEs were abdominal pain/discomfort (60%) and bloatedness (47%). The median estimated peritoneal weekly Kt/ V urea was 3.0 (interquartile range: 2.2–4.8). There were significant reductions in pre- and post-study median serum urea (20.8 vs. 14.9 mmol/L; p = 0.001), creatinine (976.0 vs. 667.5 µmol/L; p = 0.001), phosphate (1.7 vs. 1.5 mmol/L; p = 0.03), and β2-microglobulin (29114.0 vs. 26339.0 µg/L; p = 0.048). Fluid reabsorption occurred among patients with residual kidney function. However, median body weights were not significantly different pre- and post-study (66.4 vs. 65.7 kg; p = 0.83).

Conclusions:

This preliminary study demonstrated that no SAEs were observed with the AWAK-PD device; however, 60% of participants developed abdominal pain/discomfort. Further device enhancements are needed to improve ultrafiltration and reduce AEs.
Characteristics of gas-driven fan propulsion system for fixed-wing vertical take-off and landing aircraft
Authors: Zhou Yang , Huang Guoping , Xia Chen , Zhu Yuanzhao
Published: June 2021

As a propulsion system for vertical take-off and landing (VTOL) aircraft, the gas-driven fan propulsion system has received some attention in recent years due to its simple mechanical structure and good performance. During the operation of the propulsion system, the core turbofan exhaust is directed to the tip turbine to drive the ducted fan to obtain thrust, and the louvered vector exhaust device is used to achieve lift/thrust switching. However, due to the linkage characteristics of the guide vanes of the exhaust device, the exhaust area will gradually change with the deflection of the guide vanes. This may cause uncertain effects on the system. Besides, considering the development cost of the propulsion system, it is necessary to clarify whether the core turbofan needs to be redesigned based on the characteristics of the system. Further, the transitional performance (VTOL to flight) of the propulsion system also needs to be studied. To this end, this study established an overall model of the gas-driven fan propulsion system combined with the characteristics of the core turbofan to analyze these problems. The results indicate that the louvered vector exhaust device can well match the gas-driven fan propulsion system. And when the propulsion system is composed, the gas-driven fan will not significantly affect the operation characteristics of the core turbofan. Besides, the preliminary analysis shows that the gas-driven fan propulsion system can meet the power requirements of the transition state of the fixed-wing VTOL aircraft. And the characteristics of the propulsion system may make the take-off thrust-weight ratio requirement of the fixed-wing VTOL aircraft be as low as 1.1.
Beyond the binary: sexual health outcomes of transgender and non-binary service users of an online sexual health service
Authors: Day Sara , Smith Joanna , Perera Sean , Jones Sophie , Kinsella Ryan
Published: June 2021

Sexual health data on transgender and non-binary (TNB) people in the United Kingdom are limited. TNB individuals experience significant socioeconomic and stigma-related disadvantages. Sexual health morbidity and unmet need is likely to be significant. We compared the sexual health outcomes of TNB and cisgender users of London’s online sexual health service. Of 119329 users that registered with the e-service between 30.4.19 and 31.12.19, 504 (0.42%) identified as TNB: 302 TNB users requested 463 kits. 78.4% (363/463) of kits were returned. 99.4% of dispatched kits included throat and rectal swabs for gonorrhoea and chlamydia testing. STI/HIV test positivity was: 5.5% syphilis, 4.8% chlamydia, 3.4% gonorrhoea and 0.7% HIV positive. HIV prevalence amongst TNB individuals was: 4.3%. 19.9% of TNB individuals engaged in chemsex, group sex, or fisting and were more likely to engage in sex work. 97.7% gave the service 4/5 or 5/5 star rating. We observed high positivity rates of HIV/STIs amongst TNB individuals and significant levels of high-risk sexual activity. Service users rated the service highly. Given TNB often have complex healthcare needs, some of which cannot be met entirely online, physical clinics must work collaboratively with e-services to support and protect this marginalised population.
The great imitator: A rare presentation of annular and corymbose secondary syphilis
Authors: Bose Shiti
Published: June 2021

A corymbose (or corymbiform) arrangement in secondary syphilis (derived from the Greek word korymbos) is characterised by a central large plaque or papule surrounded by smaller satellite lesions akin to an explosion, whereas annular plaques consist of a peripheral ring of erythematous papules with central hyperpigmentation. These are very rare cutaneous manifestations of secondary syphilis. This case report focuses on one such interesting case which presented with the annular and corymbose pattern involving the face and genitalia.
Settler Colonialism and the South African TRC: Ambivalent Denial and Democratisation Without Decolonisation
Authors: Park Augustine S.J.
Published: June 2021

In the quarter-century since it began its work, the South African TRC has been endlessly debated. At the same time, a field of study emerged centred on settler colonialism, and settler colonial analyses have become established in transitional justice. South Africa’s TRC, however, has escaped examination through the lens of settler colonialism. Typically, settler colonialism in South Africa is treated as an historical phase; however, recent scholarship emphasises South Africa’s colonial present. Following these insights, this article: (1) establishes the relevance of a settler colonial lens for interpreting the South African TRC by demonstrating the settler colonialism of apartheid; (2) provides an empirical examination of the TRC’s Report. The Report acknowledges settler colonialism while advancing a series of denials, producing ‘ambivalent denial’; (3) explores the implications of ambivalent denial. Specifically, ambivalent denial contributes to democratisation without decolonisation by enabling settler denial and failing to address settler colonial structures.
30th Anniversary of the RCIADIC and the ‘white noise’ of the justice system is loud and clear
Authors: Cubillo Eddie
Published: June 2021

It's been 30 years since the tabling of the Royal Commission into Aboriginal Deaths in Custody and for Indigenous people things are worse than they have ever been when dealing with the justice industry.
Frameworks for evaluating law and justice development assistance: Lessons from Australia’s involvement in PNG
Authors: Guy Adrian
Published: June 2021

For over 20 years Australia has provided assistance to Papua New Guinea in the development of their law and justice sector. The Justice Services and Stability for Development program is the most recent of such law and justice development assistance programs. Much like its predecessors, while it made some achievements, efforts have ultimately underperformed due to an inadequate and donor-centric monitoring and evaluation framework. It is contended that although an ideal monitoring and evaluation framework will not guarantee development results, it is a prerequisite. This ideal framework adopts the learning-effectiveness model and constructivist approach, relies on mechanisms such as self-reporting and qualitative research tested against context-centric indicators and is necessarily staged in its rollout design.
Deep learning based fusion model for COVID-19 diagnosis and classification using computed tomography images
Authors: Subhalakshmi RT , Balamurugan S Appavu alias , Sasikala S
Published: June 2021

Recently, the COVID-19 pandemic becomes increased in a drastic way, with the availability of a limited quantity of rapid testing kits. Therefore, automated COVID-19 diagnosis models are essential to identify the existence of disease from radiological images. Earlier studies have focused on the development of Artificial Intelligence (AI) techniques using X-ray images on COVID-19 diagnosis. This paper aims to develop a Deep Learning Based MultiModal Fusion technique called DLMMF for COVID-19 diagnosis and classification from Computed Tomography (CT) images. The proposed DLMMF model operates on three main processes namely Weiner Filtering (WF) based pre-processing, feature extraction and classification. The proposed model incorporates the fusion of deep features using VGG16 and Inception v4 models. Finally, Gaussian Naïve Bayes (GNB) based classifier is applied for identifying and classifying the test CT images into distinct class labels. The experimental validation of the DLMMF model takes place using open-source COVID-CT dataset, which comprises a total of 760 CT images. The experimental outcome defined the superior performance with the maximum sensitivity of 96.53%, specificity of 95.81%, accuracy of 96.81% and F-score of 96.73%.
Retroperitoneal Sclerosing Angiomyolipoma with Long-Term Follow up: A Case Report with Unique Clinicopathologic and Genomic Profile
Authors: Jia Liwei , Panwar Vandana , Parmley Michelle , Lucas Elena , Pedrosa Ivan , Kapur Payal
Published: June 2021

Sclerosing angiomyolipoma (sAML) is a rare variant of the perivascular epithelioid tumors exhibiting distinct morphology with extensive stromal hyalinization, which makes it challenging to recognize. It often lacks an adipose tissue component and melanocytic markers may be expressed only focally, further posing a diagnostic challenge. Here, we report a case of sAML of the left pararenal retroperitoneum in a 52-year-old woman with 92 months of clinical follow up and discuss the histologic features, immunoprofile, molecular alterations, and differential diagnoses that can aid in the diagnosis of this unique and rare entity.
Primary Adrenal Malignant Rhabdoid Tumor in a 14-Year-Old Female: A Case Report and Literature Review
Authors: Alturkustani Murad , Schmidt Ryan , Gayer Christopher , Warren Mikako , Navid Fariba , Raca Gordana , Biegel Jaclyn A. , Pawel Bruce , Zhou Shengmei
Published: June 2021

Malignant rhabdoid tumor (MRT) is a rare, SWItch/sucrose nonfermentable-related matrix-associated actin-dependent regulator of chromatin subfamily B member 1 ( SMARCB1)-deficient, aggressive tumor, occurring predominantly in children below 3 years of age. Primary adrenal MRT is extremely rare, with only 3 cases reported in the literature. A previously healthy 14-year-old female presented with left upper quadrant/epigastric abdominal pain. Imaging studies revealed an 8.0 × 8.0 × 6.5 cm, heterogeneous, partially enhancing mass along the superior margin of the left kidney encasing the adrenal gland. Surgical resection of the tumor revealed a hypercellular heterogeneous neoplasm arising from the adrenal gland. It was composed predominantly of primitive small round blue cells with focal true rosettes and areas of vague glandular epithelial differentiation and chondroid differentiation. Classic rhabdoid-type cytoplasmic inclusions were focally present. Mitoses, tumor necrosis, and hemorrhage were readily seen. Tumor cells showed complete loss of SMARCB1 (INI1) nuclear staining, demonstrated strong, and diffuse positivity for glypican 3, patchy positivity for CD99, cytokeratin, Sal-like protein 4, Lin-28 homolog A, epithelial membrane antigen, and S100. Molecular studies revealed biallelic frameshift mutations in the SMARCB1 gene (c.673delG and c.683dupT) without pathogenic copy number aberrations. The histologic, immunohistochemical, and molecular findings support a diagnosis of MRT. The unusual age, location, and mutations of this case expand the clinicopathologic and molecular spectrum of MRT.
Exploring the Frontier of Chinese Ethnic Minority Education: An Interview With Prof. Xing Teng
Authors: Teng Xing , Hsiung Ping-Chun
Published: June 2021

Xing Teng has spearheaded ethnic minority education and educational anthropology in China. As a member of the Han majority and an ally to ethnic minority groups, he has endeavored to open space for ethnic minority education in China. I sat down with Professor Teng in the summer of 2018. After transcribing the original interview into Chinese and in consultation with Professor Teng, four segments from the interview are translated for this Special Issue, with added footnotes. Statements are also included in the text for clarity. The final version has been lightly edited and condensed for length and clarity.
Racisms in Qualitative Inquiry: Recognitions and Challenges
Authors: Collins Donald R. , Cannella Gaile S.
Published: June 2021

The purposes of this article are to introduce a special issue of Qualitative Inquiry focusing on “Racisms in Qualitative Inquiry” and to make obvious the institutionalized perspectives and practices of racism that are embedded in the conceptualizations and doings of qualitative research. The articles address unexamined purposes, direct practices, and methodologies of research like coding and biases in representation, along with rethinking and reconceptualizing research though knowledges like Black Studies (and other Ethnic Studies generally) and the use of methodologies that have been ignored and excluded like pláticas. The final articles discuss those hidden relational and policy complexities in higher education as the predominant location for the practice and rewarding of qualitative inquiry.
Treatment of periprosthetic femoral fractures following total hip arthroplasty: results of an online survey of the European Hip Society
Authors: Thaler Martin , Weiss Carmen , Lechner Ricarda , Epinette Jean-Alain , Karachalios Theofilos S , Zagra Luigi
Published: June 2021

Background:

Periprosthetic femoral fractures (PPF) are a devastating complication after total hip arthroplasty (THA). Both trauma and adult reconstruction surgeons or combined teams treat these fractures following management algorithms. The aim of this study is to investigate the current treatment of PPF by members of the European Hip Society (EHS).

Methods:

An online survey of the members of the European Hip Society (EHS) was conducted. 20 cases of periprosthetic fracture were presented and surgeons were asked to answer questions regarding classification, treatment and postoperative treatment protocol.

Results:

A total of 132 (130 male; 2 female) EHS members responded. Mean years in surgical practice was 18.8 (min. 1 year; max. 50 years). The preferred surgical method was combined open reduction and internal fixation (ORIF) (30.3%) for AG fractures, ORIF with cables (30.4%) for AL fractures, combined ORIF (cable and plate) for B1 fractures (49.2%), stem revision with cables for B2 fractures (73.1%), stem revision with cables for B3 (55.9%) fractures and combined ORIF (cable and plate: 55.5%) for C fractures. Surprisingly, 10.8% suggested various stem revision techniques for B1 and 17.4% for C fractures. Strong variations were observed regarding postoperative weight-bearing protocol.

Conclusions:

A strong consensus was found for the choice of conservative or surgical treatment of the different PPF types according to the Vancouver Classification. Various stem revision techniques were the preferred surgical techniques for Vancouver B2 (91.2%) and B3 (88.6%) fractures. However, for postoperative weight-bearing, when the ORIF technique was used, a significant variation of protocols was found.
Change in clinical crown height in adult patients treated by means of the multi-bracket appliance with extraction of four first premolars
Authors: Ozeki Yumi , Ozaki Hiroya , Fushima Kenji
Published: June 2021

Objective:

To evaluate the gingival condition due to adult orthodontic treatment using the clinical crown height (CCH) as an index.

Design:

Retrospective study.

Setting:

Department of Orthodontics at a university.

Participants:

A total of 21 adult female patients with healthy periodontal tissue were treated by means of the multi-bracket appliance with extraction of four first premolars.

Methods:

Three-dimensional (3D) digital dental models were reconstructed to assess the vertical movement of the free gingival margin caused by adult orthodontic treatment. Pre- and post-treatment CCH were measured, and changes in CCH due to treatment were examined.

Results:

The change in CCH by orthodontic treatment was able to be assessed objectively using 3D digital models of the dental casts. In the upper dentition, a significant reduction in CCH was found on the labial and lingual sides of the central incisor, with a mean of –0.28 mm and –0.34 mm, respectively ( P < 0.001). In contrast, a significant increase in CCH was found on the labial side of the lateral incisor with a mean of 0.75 mm ( P < 0.001). In the lower dentition, CCH on the lingual side of the canine, the second premolar and the first molar increased significantly ( P < 0.001), with a mean of 0.41 mm, 0.45 mm and 0.50 mm, respectively. For the buccal side, the second premolar showed a significant increase in CCH with a mean of 0.61 mm ( P < 0.001).

Conclusion:

By using the CCH as an index, it was possible to assess the gingival condition after active orthodontic treatment.
Mechanism of Origin of Positive Tissue Pressure During Negative-Pressure Wound Therapy
Authors: Macionis Valdas
Published: June 2021

This report provides a simplified insight into the previously unexplained physical mechanism of the origin of local positive tissue pressure during negative-pressure wound therapy (NPWT). A chain of 2 spring model could be used to show the biomechanical interaction between the NPWT dressing and the adjacent body tissues. It is important to assume that the application of NPWT dressing to the body surface creates a new closed compartmentalized volume. Air suction generates local positive pressure within the dressing due to unopposed atmospheric load, which in turn leads to compression of the adjacent tissues and induction of positive pressure there. Analysis of the biomechanical events during NPWT implies the possibility of tissue injury by positive pressure and suggests clinical alertness in regard to the balance between the size of the NPWT dressing and suction pressure as well as further related research.
Prevalence of Renal Masses Suspected of Malignancy and Adrenal Incidentalomas in Patients With Abdominal Aortic Aneurysm
Authors: Studzińska Dorota , Kózka Mateusz , Polok Kamil , Gronostaj Katarzyna , Chwała Maciej , Szczeklik Wojciech
Published: June 2021

Objective:

The aim of our study was to assess the prevalence of renal masses suspected of malignancy and adrenal incidentalomas in patients with abdominal aortic aneurysm based on the computed tomography angiography (CTA).

Methods:

In the retrospective cross-sectional study, the CTA scans of patients with abdominal aortic aneurysms and thoraco-abdominal aortic aneurysms type II-IV were assessed. Patients with thoraco-abdominal aortic aneurysms type I and V and history of abdominal aortic surgery were excluded from the study.

Results:

Study group comprised 937 patients with a median age of 73.0 years, 83.8% of whom were male. CTA revealed renal tumors in 11 patients (1.2% of the study population) with a median size of 26 mm (interquartile range 20-50). Adrenal incidentalomas were found in 61 patients (6.5% of the study population). In 20 patients (2.1%) adrenal lesions were found bilaterally.

Conclusion:

In the described cohort, the renal and adrenal tumors were relatively common findings among patients with abdominal aortic aneurysm and thoraco-abdominal aortic aneurysms type II-IV. Both anaesthesiologists and surgeons should be vigilant about the possibility of such coexistence in order to provide the patients with the best possible perioperative care and an optimal surgical modality.
Pronator Quadratus Repair Does Not Affect Reoperation Rates Following Volar Locking Plate Fixation of Distal Radius Fractures
Authors: Meyer Maximilian A. , Benavent Kyra A. , Janssen Stein J. , Chruscielski Cassandra M. , Blazar Philip E. , Earp Brandon E.
Published: June 2021

Background

The purpose of this study was to evaluate the impact of pronator quadratus (PQ) repair on reoperation rates after distal radius open reduction internal fixation (ORIF) using a volar locking plate.

Methods

A retrospective study of all patients undergoing distal radius ORIF with a volar locking plate between January 2012 and December 2016 at 2 urban, academic level I trauma centers was performed. Patient demographics, fracture and procedure characteristics, surgeon subspecialty, PQ repair, and reoperations were recorded. Descriptive statistics were used to determine whether patient-related or injury-related characteristics were associated with PQ repair. Bivariate and multivariable regression analyses were used to assess the effect of PQ repair on subsequent reoperations.

Results

In total, 509 patients were included, including 31 patients with bilateral injuries. The average follow-up time was 3.7 ± 2.8 years. Patients undergoing PQ repair were younger (57 ± 17 years vs 61 ± 17 years) and were more likely to have a lower Soong grade (53% vs 44% with Soong grade 0) than patients without PQ repair. Pronator quadratus repair was not found to have a significant impact on hardware removal, reoperations for flexor tendon pathology, or overall reoperations.

Conclusions

Pronator quadratus repair was more commonly performed in younger patients and in patients with a lower Soong grade. Hand-subspecialized surgeons are more likely to pursue PQ repair than trauma-subspecialized surgeons. This study did not detect statistically significant differences in hardware removal, flexor tendon pathology, or overall reoperations between groups.
Passenger fitness to fly
Authors: Godden Andrew
Published: June 2021

The COVID-19 pandemic has reduced the amount of international travel, however, the speed and convenience of jet travel is unparalleled and our love of visiting far flung places at low cost will not have gone away for good. Now is an ideal time to review the health considerations of travelling in order to provide safe advice to our patients, who are increasingly elderly and travel with a wider range of medical co-morbidity. The purpose of this article is to consolidate guidance from the Civil Aviation Authority and the International Air Travel Association with supplementary travel information from other specialist organisations to help develop understanding of the issues air travel may pose for patients in primary care.
Do Simulated Hospital Admissions Reflect Reality? A Qualitative Study of Volunteer Well-Being During a 24-Hr Simulated Hospitalization
Authors: Smits Merlijn , Eddahchouri Yassin , Meurs Pleun , Nijenhuis Sharon M. , van Goor Harry
Published: June 2021

Objectives:

This study aims to delineate if and how healthy volunteers admitted to simulated care can aid in understanding real well-being experiences of in-hospital surgical patients.

Background:

Scientific research is necessary to understand the mediating effect of healthcare design on patient outcomes. Studies with patients are, however, difficult to conduct as they require substantial funding, time, and research capacity, and recovering patients are often not willing or able to participate. If studies conducted with volunteers provide similar findings, such studies might serve as fruitful alternatives for future research.

Method:

A multimethod study was conducted between July 2017 and December 2017 with 17 volunteers who underwent a 24-hr simulated inpatient postsurgical care protocol. Data on value experiences, norms, and design requirements for an optimal healing environment were collected via diaries and semi-structured value-oriented interviews, focused on the values of spatial comfort, privacy, autonomy, sensory comfort, safety and security, and social comfort. Volunteers’ outcomes were compared to prior literature on similar patients’ outcomes.

Results:

Volunteers seem to experience their healing environment similarly to patients with regard to the values of spatial comfort, privacy, autonomy, sensory comfort, and social comfort related to contact with personnel and relatives. Less valuable insights were gained on the values of safety and security, and social comfort related to interaction with other patients, most probably due to the study design and because the participants did not truly experience a diseased bodily state.

Conclusion:

Simulated hospital admissions with volunteers provide a satisfactory alternative for studying real patient outcomes.
Evaluation of a Domestic Steam Disinfector-Dryer Device for Disinfection of Health Care Workers’ Identification Lanyards
Authors: Millar Beverley C. , Moore John E.
Published: June 2021

Background

Fabric lanyards are commonly worn by health care workers (HCWs) and are known to harbor infectious organisms and contribute to the transmission of infection to HCWs and patients. A diverse range of nosocomial pathogens have been found on lanyards, but there are very few studies describing how to successfully disinfect lanyards to break the chain of transmission. Recently, a steam disinfector-dryer device has come on the market, which performs rapid disinfection against nosocomial pathogens and also dries the contents of the device. It was the aim of this study to evaluate steam disinfection-drying as a method to eliminate pathogens from lanyards.

Methods

Thirty-eight strips of new, unused, and autoclaved polyester neck lanyards (4 × 2 cm) were inoculated with 30 (12 Gram-positive + 18 Gram-negative) bacteria and one yeast organism. The inoculated lanyard fabric (five organisms per lanyard strip) was placed into a steam disinfector-dryer device and disinfected for 5 minutes and dried for 30 minutes, in accordance with the manufacturer’s instructions. Following disinfection and drying, the presence of viable organisms on lanyard fabric was evaluated using enhanced microbiological broth culture methods for 48 hours. Control lanyard strips were treated with organisms and left at room temperature without undergoing disinfection and drying procedures.

Findings

Steam disinfection-drying eradicated all test organisms from treated lanyards, with no culturable organisms detected following disinfection-drying, even when employing enhanced bacteriological culture conditions. All test organisms remained viable on the control lanyards.

Conclusion/Application to Practice

Steam disinfection-drying offers a simple method of decontaminating lanyards, producing dry lanyards for immediate reuse. Occupational health practitioners and hospitals should consider assessing the feasibility of adopting this method in their settings to aid in breaking the chain of transmission of nosocomial pathogens via contaminated lanyards.
Do levels of sedentary behaviour and physical activity differ according to weight-bearing status after lower limb fracture? A prospective cohort study
Authors: Ekegren Christina L , Edwards Elton R , Kimmel Lara , Gabbe Belinda J
Published: June 2021

Background/purpose:

To determine whether sedentary behaviour and physical activity differ according to initial weight-bearing status 2 weeks and 6 months after lower limb (LL) fracture.

Methods:

Two weeks and 6 months following LL fracture, 47 adults aged 18–69 wore ActiGraph and activPAL accelerometers for 10 days. Sitting time, steps, and moderate-intensity physical activity (MPA) were compared between weight-bearing (WB) and non-weight-bearing (NWB) groups.

Results:

Two weeks post-discharge, the NWB group sat significantly more than the WB group (median: 14.1 h/day vs. 13.3 h/day; p = 0.04). These differences were apparent for female and middle-aged participants. At 6 months, there were no significant differences between weight-bearing groups for sitting time, steps or MPA.

Conclusion:

Weight-bearing restriction had an early impact on sitting time, but this impact lessened over time. While considering the need for rest, advice about reducing sitting time may be particularly important for people who are NWB post-fracture.
The Effect of a Surgeon’s Online Presence on Surgeon Selection in Elective Joint Arthroplasty
Authors: McNamara Colin A , Shah Harsh A , Lezak Bradley A , Haziza Sagie , D’Apuzzo Michele , Hernandez Victor H
Published: June 2021

The purpose of this study was to investigate the role that a surgeon’s online presence plays in patients’ decisions to be treated by that surgeon. Postoperative patients from our arthroplasty clinic were enrolled in a retrospective cross-sectional questionnaire. Results from 101 patients demonstrated that the most searched information was education and training (68.8%), online ratings (53.1%), online reviews (50%), associated hospital and/or university (46.9%), insurance coverage (37.5%), location (21.9%), and awards (9.4%). The results of our questionnaire suggest that orthopedic surgeons could more effectively shape their online presences by highlighting these characteristics that patients are more likely to research.
Metachronous multicentric giant cell tumour of bone in a 12-year-old girl: A case report and review of literature
Authors: Wadia Farokh , Chaudhary Kshitij , Anchan Chetan , George Seena , Dhawale Arjun
Published: June 2021

While giant cell tumour of bone is a relatively common tumour in adults, it is exceedingly rare in children. Multicentric metachronous giant cell tumour is an even rarer presentation of this tumour in skeletally immature patients. We present here the challenges in management of this rare tumour.

A 12-year-old girl presented with a giant cell tumour affecting four different bones sequentially, three times within a 3-year period. The disease first appeared in the right distal fibula, then a year later in ipsilateral talus and calcaneus and finally a year later, in the T5 vertebral body, all requiring surgical treatment. Our strategy was to manage this lesion aggressively based on the limited literature available and present our own long-term surveillance strategy. Our patient responded well to treatment each time and has remained disease-free for 24 months from her last surgery.

This is a rare case of metachronous multicentric giant cell tumour of bone in a skeletally immature patient requiring aggressive treatment and surveillance.