bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development and validation of a 3D printed antiviral ventilator filter - a comparative study
Authors: Shaylor Ruth , Francis Mathew , Shaylor Esther , Dadia Solomon , Cohen Barak 
Published: April 2021

Abstract
Background
The current coronavirus infectious disease 2019 (COVID-19) pandemic has caused unexpected pressure on medical supplies, interrupting supply chains and increasing prices. The supply of antiviral filters which form an essential part of the ventilator circuit have been affected by these issues. Three-dimensional (3D) printing may provide a solution to some of these issues.

Methods
We designed and tested 3D printed heat and moisture exchange (HME) and antiviral casing. For each casing we tested two different filter materials derived from a sediment water filter cartridge or 1.5-μm glass fiber filter paper. A polyurethane sponge was used for the HME. Each design was tested for circuit leak, circuit compliance, peak inspiratory pressure and casing integrity using methylene blue dye.

Results
We designed, produced, and tested two different types of antiviral filters with six different internal configurations. Overall, we tested 10 modified filter designs and compared them with the original commercial filter. Except for the combination of 1.5-μm filter paper and 5 mm sponge peak inspiratory pressure and circuit compliance of the filters produced were within the operating limits of the ventilator. All In addition, all filters passed the dye test.

Conclusions
Our filter may be of particular importance to those working in low middle-income countries unable to compete with stronger economies. Our design relies on products available outside the healthcare supply chain, much of which can be purchased in grocery stores, hardware stores, or industrial and academic institutions. We hope that these HMEs and viral filters may be beneficial to clinicians who face critical supply chain issues during the COVID-19 pandemic.
Managing COVID-19 related distress in primary care: principles of assessment and management
Authors: Astill Wright Laurence , Gnanapragasam Sam , Downes Anthony J. , Bisson Jonathan I. 
Published: April 2021

AbstractCOVID-19 will cause normal feelings of worry and stress and many of those who experience higher levels of distress will experience resolution of their symptoms as society returns to pre-COVID-19 functioning. Only a minority are likely to develop a psychiatric disorder. Certain individuals may be vulnerable to experiencing persisting symptoms, such as those with pre-existing comorbidity. Management approaches could centre around using collaborative approaches to provide and build on already existing socioeconomic support structures, the avoidance of over-medicalisation, watchful waiting and finally treating those who do meet the criteria for psychiatric diagnosis. Primary care clinicians are likely be the first healthcare point of contact for most COVID-19 related distress and it is important that they are able to provide evidence based and evidence informed responses, which includes social, psychological and pharmacological approaches. This expert opinion paper serves to summarise some approaches, based primarily on indirect extrapolation of evidence concerning the general management of psychological distress, in the absence of COVID-19 specific evidence, to assist primary care clinicians in their assessment and management of COVID-19 related distress.
The role of personalised professional relations across care sectors in achieving high continuity of care
Authors: Forstner Johanna , Bossert Jasmin , Weis Aline , Litke Nicola , Strassner Cornelia , Szecsenyi Joachim , Wensing Michel 
Published: April 2021

Abstract
Background
High continuity of care has a positive impact on health outcomes, but insight into the mechanisms underlying this impact is limited. Information continuity, on which our study focuses, is especially important when relational continuity is not given, which is often the case at hospital admission or hospital discharge. The aim of this study is to provide insight into the information flows between general practices and hospitals in Germany, and to identify factors associated with these flows of information.

Methods
This is a qualitative interview study in a purposeful sample of staff from hospitals and general practices (general practitioners, care assistants in general practice, hospital management, hospital physicians, and nursing staff). Interviews were conducted via telephone or face-to-face using a self-developed semi-structured interview guide. Stepwise systematic content analysis was used to structure collected material into themes and sub-themes that related to the study aim. Data was analysed by two researchers in several cycles, alternating between inductive and deductive approaches.

Results
A total of 49 interviews were conducted. Duration of the interviews varies between 21 and 78 min (mean duration 43 min). Across all groups, more than two thirds of participants were female (n = 34, 69%). The analysis highlighted six interdependent main themes regarding factors that affect information flows between hospitals and general practices: organisational, legal, financial, patient factors, individual characteristics, and emotional & social factors. The latter theme emerged as particularly rich and was therefore divided into four subthemes: appreciation and understanding of the respective other, (intrinsic) motivation, socialisation, and relationships. Organised meetings and events were mentioned as strategies to address emotional and social factors.

Conclusions
Digitalisation can facilitate information flows between care providers. However, knowing each other and good personal relations remain important for effective collaboration. Cooperation between all stakeholders is needed to aim to achieve continuity of care.
Trial registration: DRKS00015183 on DRKS/ Universal Trial Number (UTN): U1111-1218–0992. Date of registration 23/08/2018.
Prevalence of cryptosporidiosis among children with diarrhoea under five years admitted to Kosti teaching hospital, Kosti City, Sudan
Authors: Tamomh Abdelhakam G. , Agena AbdElhadi M. , Elamin Elham , Suliman Mohammed A. , Elmadani Mohammed , Omara Asmaa B. , Musa Sahar A. 
Published: April 2021

Abstract
Background
Cryptosporidiosis is a disease caused by infection with an intestinal coccidian parasite Cryptosporidium. Cryptosporidium species are the second leading cause of diarrheal disease and death in children in developing countries. Until now, no data have been available or published on its prevalence among children with diarrhea in Sudan. Therefore, this paper was designed to determine the prevalence rate of Cryptosporidium among children with diarrhea under 5 years who were admitted to Kosti Teaching Hospital.

Methods
A hospital-based cross-sectional study including children under 5 years old admitted to the pediatric section of the hospital between September 2020 and December 2020. A total of one-hundred and fifty stool samples were collected. All stool samples were examined using the modified Ziehl Neelsen (mZN) staining technique and then examined microscopically for Cryptosporidium infection.

Results
A total of 150 children were examined out of which 70 presented with diarrhea. A greater prevalence of 19/70 (27.1%) of Cryptosporidium was observed in children with diarrhea than children without diarrhea 7/80 (8.8%). There was a significant relationship between the prevalence of Cryptosporidium and the presence of diarrhea in children under 5 years in the Kosti Teaching Hospital(P < 0.05). It was found that a higher prevalence was registered among children using piped-water sources for drinking.

Conclusions
The overall prevalence of parasite detected was 17.3% among children admitted to Kosti Teaching Hospital. The prevalence rate of the infection among Children with diarrhoea was 27.1%. Studying the prevalence rate of cryptosporidiosis among diarrheic children may predict their health status, leading to a better diagnosis, treatment, and, therefore, patients’ status improvement.
A rare cause of stroke: fail-implanted venous port catheter system – a case report
Authors: Yeniguen Mesut , Braun Tobias , Vlazak Alexander , Umscheid Thomas , Juenemann Martin , Gerriets Tibo , Tschernatsch Marlene 
Published: April 2021

Abstract
Background
We present the case of a 75-year-old female with acute embolic cerebral infarction caused by a fail-implanted venous port catheter system in the left subclavian artery.

Case presentation
A 75-year-old woman presented to our emergency room after acute onset of a right-sided hemiparesis and dysarthria. Within 2 days after admission, she developed a left-sided hemiparesis, ataxia with concordant gait disturbance and incoordination of the left upper limb. DWI-MRI showed acute multiple infarcts in both cerebral and cerebellar hemispheres. Laboratory examination, 24-h Holter electrocardiography and transthoracic echocardiography provided no pathological findings. Further examination revealed an arterially fail-implanted port catheter, placed in the left subclavian artery with its tip overlying the ascending aorta, as the source of cerebral embolism.

Conclusion
This is the first case report of thromboembolic, cerebral infarction due to a misplaced venous port catheter in the subclavian artery, emphasizing the imperative need for a thorough diagnostic workup, when embolism is suspected but cannot be proven at first glance.
Reproducing normative femininity: Women’s evaluations of their birth experiences analysed by means of word frequency and thematic analysis
Authors: Westergren Agneta , Edin Kerstin , Christianson Monica 
Published: April 2021

AbstractBackgroundGiven the significance of the birth experience on women’s and babies’ well-being, assessing and understanding maternal satisfaction is important for providing optimal care. While previous research has thoroughly reviewed women’s levels of satisfaction with the childbirth experience from a multitude of different angles, there is a dearth of papers that use a gender lens in this area. The aim of this study is to explore through a gender perspective the circumstances attributed to both women’s assessment of a positive birth experience and those which contribute to a lack of satisfaction with their birth experience.MethodsThrough the use of a local birth evaluation form at a Swedish labour ward, 190 women gave written evaluations of their birth experiences. The evaluations were divided into groups of positive, ambiguous, and negative evaluations. By means of a latent and constructionist thematic analysis based on word count, women’s evaluations are discussed as reflections of the underlying sociocultural ideas, assumptions, and ideologies that shape women’s realities.ResultsThree themes were identified:Grateful women and nurturing midwives doing gender togetherdemonstrates how a gender-normative behaviour may influence a positive birth experience when based on a reciprocal relationship.Managing ambiguous feelings by sympathising with the midwifeshows how women’s internalised sense of gender can make women belittle their negative experiences and refrain from delivering criticism.The midwifery model of relational care impeded by the labour care organisationdescribes how the care women receive during labour and birth is regulated by an organisation not always adapted to the benefit of birthing women.ConclusionsMost women were very satisfied, predominantly with emotional support they received from the midwives. The latent constructionist thematic analysis also elicited women’s mixed feelings towards the birth experience, with the majority of negative experiences directed towards the labour care organisation. Recognising the impact of institutional and medical discourses on childbirth, women’s birth evaluations demonstrate the benefits and challenges of gender-normative behaviour, where women’s internalised sense of gender was found to affect their experiences. A gender perspective may provide a useful tool in unveiling gender-normative complexities surrounding the childbirth experience.
Ablative radiation therapy to restrain everything safely treatable (ARREST): study protocol for a phase I trial treating polymetastatic cancer with stereotactic radiotherapy
Authors: Bauman Glenn S. , Corkum Mark T. , Fakir Hatim , Nguyen Timothy K. , Palma David A. 
Published: April 2021

AbstractBackgroundPatients with polymetastatic cancer are most often treated with systemic therapy to improve overall survival and/or delay progression, with palliative radiotherapy reserved for sites of symptomatic disease. Stereotactic ablative radiotherapy (SABR) has shown promise in the treatment of oligometastatic disease, but the utility of SABR in treating all sites of polymetastatic disease has yet to be evaluated. This study aims to evaluate the maximally tolerated dose (MTD) of SABR in patients with polymetastatic disease.MethodsUp to 48 patients with polymetastatic cancer (> 10 sites) will be enrolled on this phase I, modified 3 + 3 design trial. Eligible patients will have exhausted (or refused) standard systemic therapy options. SABR will be delivered as an escalating number of weekly fractions of 6 Gy, starting at 6 Gy × 2 weekly fractions (dose level 1). The highest dose level (dose level 4) will be 6 Gy × 5 weekly fractions. Feasibility and safety of SABR will be evaluated 6 weeks following treatment using a composite endpoint of successfully completing treatment as well as toxicity outcomes.DiscussionThis study will be the first to explore delivering SABR in patients with polymetastatic disease. SABR will be planned using the guiding principles of: strict adherence to dose constraints, minimization of treatment burden, and minimization of toxicity. As this represents a novel use of radiotherapy, our phase I study will allow for careful selection of the MTD for exploration in future studies.Trial registrationThis trial was prospectively registered inClinicalTrials.govasNCT04530513on August 28, 2020.
Prognostic value of the extent of lymphadenectomy for esophageal cancer-specific survival among T1 patients
Authors: Wang Yang , Zhang Xiangwei , Zhang Xiufeng , Liu-Helmersson Jing , Zhang Lin , Xiao Wen , Jiang Yuanzhu , Liu Keke , Sang Shaowei 
Published: April 2021

AbstractBackgroundClinically, there are no clear guidelines on the extent of lymphadenectomy in patients with T1 esophageal cancer. Studying the minimum number of lymph nodes for resection may increase cancer-specific survival.MethodsPatients who underwent esophagectomy and lymphadenectomy at T1 stage were selected from the Surveillance, Epidemiology and End Results Program (United States, 1998–2014). Maximally selected rank and Cox proportional hazard models were used to examine three variables: the number of lymph nodes examined, the number of negative lymph nodes and the lymph node ratio.ResultsApproximately 18% had lymph node metastases, where the median values were 10, 10 and 0 for the number of lymph nodes examined, the number of negative lymph nodes and the lymph node ratio, respectively. All three examined variables were statistically associated with cancer-specific survival probability. Dividing patients into two groups shows a clear difference in cancer-specific survival compared to four or five groups for all three variables: there was a 29% decrease in the risk of death with the number of lymph nodes examined ≥14 vs < 14 (hazard ratio 0.71, 95% confidence interval: 0.57–0.89), a 35% decrease in the risk of death with the number of negative lymph nodes ≥13 vs < 13 (hazard ratio 0.65, 95% confidence interval: 0.52–0.81), and an increase of 1.21 times in the risk of death (hazard ratio 2.21, 95% confidence interval: 1.76–2.77) for the lymph node ratio > 0.05 vs ≤ 0.05.ConclusionsThe extent of lymph node dissection is associated with cancer-specific survival, and the minimum number of lymph nodes that need to be removed is 14. The number of negative lymph nodes and the lymph node ratio also have prognostic value after lymphadenectomy among T1 stage patients.
Prevalence of multimorbidity in adults with cancer, and associated health service utilization in Ontario, Canada: a population-based retrospective cohort study
Authors: Koné Anna Péfoyo , Scharf Deborah 
Published: April 2021

Abstract
Background
The majority of people with cancer have at least one other chronic health condition. With each additional chronic disease, the complexity of their care increases, as does the potential for negative outcomes including premature death. In this paper, we describe cancer patients’ clinical complexity (i.e., multimorbidity; MMB) in order to inform strategic efforts to improve care and outcomes for people with cancer of all types and commonly occurring chronic diseases.

Methods
We conducted a population-based, retrospective cohort study of adults diagnosed with cancer between 2003 and 2013 (N = 601,331) identified in Ontario, Canada healthcare administrative data. During a five to 15-year follow-up period (through March 2018), we identified up to 16 co-occurring conditions and patient outcomes for the cohort, including health service utilization and death.

Results
MMB was extremely common, affecting more than 91% of people with cancer. Nearly one quarter (23%) of the population had five or more co-occurring conditions. While we saw no differences in MMB between sexes, MMB prevalence and level increased with age. MMB prevalence and type of co-occurring conditions also varied by cancer type. Overall, MMB was associated with higher rates of health service utilization and mortality, regardless of other patient characteristics, and specific conditions differentially impacted these rates.

Conclusions
People with cancer are likely to have at least one other chronic medical condition and the presence of MMB negatively affects health service utilization and risk of premature death. These findings can help motivate and inform health system advances to improve care quality and outcomes for people with cancer and MMB.
Objective and subjective evaluation of trifocal diffractive intraocular Lens after cataract extraction with phacoemulsification: a prospective clinical study
Authors: Zein El-Dein Ahmed A. , Elmassry Ahmed , El-Hennawi Hazem M. , Mossallam Ehab F. 
Published: April 2021

Abstract
Background
This study aimed to assess visual outcomes, quality of vision and patients’ satisfaction of a trifocal diffractive intraocular lens after cataract surgery with phacoemulsification.

Results
The study included 36 eyes that underwent implantation of trifocal diffractive intraocular lens (IOL). The residual mean postoperative spherical equivalent was − 0.40 ± 0.29 diopters. Mean Uncorrected distance visual acuity was 0.80 ± 0.16 decimal (snellen equivalent 25 ft) while mean Uncorrected intermediate visual acuity was 0.82 ± 0.31 decimal (snellen equivalent 25 ft) and mean Uncorrected near visual acuity (UCNVA) was 0.87 ± 0.20 decimal (snellen equivalent 23 ft). In defocus curve, there was infinitesimal gradual change between the three foci. Contrast sensitivity was just below the inferior limit of normal.

Conclusion
Trifocal diffractive IOL created a true intermediate focus proved by VA and defocus curve and better quality of vision assessed by contrast sensitivity and high order aberration. Moreover, it was safe and effective for correcting distance and near vision in these patients. Most of the patients were very satisfied and achieved spectacle independence.

Trial registration
Registration number and date: NCT04465279 on July 10, 2020.
Stigma and psychological distress among pediatric participants in the FD/MAS Alliance Patient Registry
Authors: Konradi Amanda 
Published: April 2021

Abstract
Background
Stigma, both enacted and internalized, is part of the illness experience of many chronic conditions / diseases and has been found to increase psychological distress, lower self-esteem, and impact social engagement lowering quality of life (QOL). Stigma among pediatric patients is of particular concern due to its potential impact on identity formation. Using patient data from the online FD/MAS Alliance Patient Registry (FDMASAPR), this study seeks to 1) determine levels of enacted and self-stigma in a pediatric population of fibrous dysplasia (FD) / McCune Albright syndrome (MAS) patients and 2) to explore the relationship between stigma and anxiety and depression.

Methods
This is a cross sectional analysis of deidentified self-report data from 18 pediatric patients. Key analytic variables include the Neuro-QOL stigma short form, the Hospital Anxiety and Depression Scale (HADS), diagnostic category and craniofacial involvement, and select demographics. Sample means and score distributions are examined. Bivariate relationships between stigma, anxiety and depression and patient’s personal and medical characteristics are established through analysis of variance and correlation.

Results
Composite stigma levels for FD/MAS pediatric patients were comparable to those of children with multiple sclerosis, epilepsy, and muscular dystrophy. Self-stigma was more frequently reported than enacted/felt stigma, but few patients indicated complete freedom from either type of stigma. Diagnosis was significantly related to self-stigma. Significant bivariate relationships were found between depression and enacted/felt and self-stigma and between anxiety and self-stigma.

Conclusions
This study establishes the illness experience of pediatric patients with FD / MAS is impacted by stigma and suggests they should be regularly screened for stigma and psychological distress. It supports the integration of clinical psychologists/ therapists in regular patient care, referral of families to advocacy organizations, and indicates that rare disease patient registries can be a useful tool in efforts to improve the QOL of patients.
Long-term body mass index changes in overweight and obese adults and the risk of heart failure, cardiovascular disease and mortality: a cohort study of over 260,000 adults in the UK
Authors: Iyen Barbara , Weng Stephen , Vinogradova Yana , Akyea Ralph K. , Qureshi Nadeem , Kai Joe 
Published: April 2021

Abstract
Background
Although obesity is a well-recognised risk factor for cardiovascular disease (CVD), the impact of long-term body mass index (BMI) changes in overweight or obese adults, on the risk of heart failure, CVD and mortality has not been quantified.

Methods
This population-based cohort study used routine UK primary care electronic health data linked to secondary care and death-registry records. We identified adults who were overweight or obese, free from CVD and who had repeated BMI measures. Using group-based trajectory modelling, we examined the BMI trajectories of these individuals and then determined incidence rates of CVD, heart failure and mortality associated with the different trajectories. Cox-proportional hazards regression determined hazards ratios for incident outcomes.

Results
264,230 individuals (mean age 49.5 years (SD 12.7) and mean BMI 33.8 kg/m2 (SD 6.1)) were followed-up for a median duration of 10.9 years. Four BMI trajectories were identified, corresponding at baseline, with World Health Organisation BMI classifications for overweight, class-1, class-2 and class-3 obesity respectively. In all four groups, there was a small, stable upwards trajectory in BMI (mean BMI increase of 1.06 kg/m2 (± 3.8)). Compared with overweight individuals, class-3 obese individuals had hazards ratios (HR) of 3.26 (95% CI 2.98–3.57) for heart failure, HR of 2.72 (2.58–2.87) for all-cause mortality and HR of 3.31 (2.84–3.86) for CVD-related mortality, after adjusting for baseline demographic and cardiovascular risk factors.

Conclusion
The majority of adults who are overweight or obese retain their degree of overweight or obesity over the long term. Individuals with stable severe obesity experience the worst heart failure, CVD and mortality outcomes. These findings highlight the high cardiovascular toll exacted by continuing failure to tackle obesity.