bluuebunny/crossref_metadata_2025_split huggingface dataset:
A novel double clip-based vascular closure device in antegrade and retrograde femoral punctures: A single-center experience in peripheral non-cardiac procedures
Authors: Thurner Annette , Heuer Anjana , Augustin Anne Marie , Gietzen Carsten , Bley Thorsten A , Kickuth Ralph 
Published: April 2021

Background: This retrospective study investigates the efficacy and safety of the novel Celt ACD® vascular closure device (VCD) following antegrade and retrograde common femoral artery (CFA) punctures for the treatment of peripheral artery disease in a challenging patient collective (e.g. calcifications, obesity, and anticoagulation). Methods: A total of 208 VCDs (i.e. 100 antegrade and 108 retrograde) were deployed between October 2019 and December 2020 in a tertiary referral interventional radiology department. Fifty-two devices were undersized in relation to the introducer sheath (up to 2 Fr). Technical success and VCD related complications were evaluated in the immediate post procedure period and the following 24 h clinically. In 68% of cases, additional duplex ultrasound was performed prior to discharge. Results: The overall technical success rate was 97%. Technical failures following antegrade approach were due to a too acute access angle (⩾60°), rendering it impossible to pass the applicator tip through the sheath lumen. A subgroup analysis of technical success pinpoints severe calcification as another key limiting factor in VCD use ( p = 0.004). Comparing equally sized with undersized device selection ( p = 0.196), direction of approach ( p = 0.265), and body mass index ( p = 0.184) proved to be insignificant. Five (2%, 5/208) major complications occurred: Four antegrade (i.e. one false aneurysm, one vessel laceration with retroperitoneal hemorrhage, two device migrations; 4%, 4/100) and one following retrograde access (i.e. >6 cm hematoma, 1%, 1/108)). Complications were successfully managed with manual compression or interventional procedures. Conclusions: The novel clip-based VCD proved to be effective with a low VCD related complication rate.
An Estimation of the Implementation Costs and Financing Options for Introducing a Universal Pension Scheme in Bangladesh
Authors: Rahman Mustafizur , Khan Towfiqul Islam , Sabbih Mostafa Amir 
Published: April 2021

The number of people aged more than 60 in Bangladesh is projected to constitute 20% of total population by 2051. The demographic momentum makes it necessary to pursue policies that guarantee a secured life for the country’s senior citizens. Currently, more than 40% of old age population (more than 65 years) in Bangladesh do not receive any type of pension or social security benefits. In this backdrop, introduction of a universal pension scheme (UPS) is an idea that should merit serious consideration. The idea of a UPS is also aligned with several Sustainable Development Goals (SDG) targets. Based on the International Labour Organization multi-pillar pension model, the article deals with required financing under different scenarios of introducing UPS in Bangladesh. The study estimates that for introducing a non-contributory UPS in Bangladesh, it would require an additional average allocation equivalent to 0.1%–0.5% of gross domestic product per annum between now and 2040. The article also estimates financing needs considering two options for the contributory UPS. The article concludes that UPS in Bangladesh can be launched on a limited scale which then could be expanded in scope and coverage in a gradual and phased manner. The article also underscores that introduction of UPS will create opportunities to rationalize the existing safety net programmes that will release funds for underwriting the UPS. JEL: H53, H55, I31, I38
Development and validation of the ethical challenges in clinical situations-questionnaire (ECCS-Q) by involving health-care providers from a tertiary care health setting
Authors: Gupta Snehil , Singh Swarndeep , Sarkar Siddharth , Batra Atul 
Published: April 2021

Background and rationale Clinicians often encounter a variety of ethical challenges in their routine clinical practice, and it varies across healthcare and cultural settings of their practice. Despite of this, there are no clear-cut available guidelines concerning the right course of action in a given ethically challenging situation. A validated instrument that could capture the health care providers’ (HCP’s) viewpoints in this regard is lacking from Indian settings. Thus, the current study aimed at developing an instrument to assess the HCP’s perspective regarding different ethically challenging situations encountered in the Indian settings. Methods The questionnaire was developed by involving 15 medical experts. A mixed-method approach, Delphi-technique, and online survey were used for item generation and validation. Results The questionnaire comprised of 11 items (accounts 57% variance; having an α = 0.68) representing four factors: health-resource constraints, medical responsibility of the HCP, obtaining patients/family members’ consent for the treatment, and treatment beyond the standard protocol. The gender and clinical disciplines of the participants were related to their level of endorsement for various domains of the ECCS-Q. Conclusions Ethical challenges in the clinical practice fall in different clusters. The clinicians’ course of action in such situations have many socio-demographic and professional determinants. Future studies are warranted to investigate these phenomena.
The Clinical Prognostic Value of lncRNA SBF2-AS1 in Cancer Patients: A Meta-Analysis
Authors: Wang Jie , Zhong Pingyong , Hua Hao 
Published: April 2021

Background: The mortality and recurrence of patients with cancer is of high prevalence. SET-binding factor 2 (SBF2) antisense RNA1 (lncRNA-SBF2-AS1) is a promising long non-coding RNA. There is increasing evidence that SBF2-AS1 is abnormally expressed in various tumors and is associated with cancer prognosis. However, the identification of the effect of lncRNA SBF2-AS1 in tumors remains necessary. Materials and Methods: Up to November 2, 2020, electronic databases, including PubMed, Cochrane Library, EMBASE, Medline, and Web of Science, were searched. The results were evaluated by pooled odds ratios (ORs) and hazard ratios (HRs) with 95% confidence intervals (CIs). Results: A total of 11 literatures on cancer patients were included for the present meta-analysis. The combined results revealed that high expression of SBF2-AS1 was significantly associated with unfavorable overall survival (OS) (HR = 1.48, 95% CI: 1.34-1.62, P < 0.00001) in a variety of cancers. In additional, the increase in SBF2-AS1 expression was also correlated with tumor size ((larger vs. smaller) OR = 2.34, 95% CI: 1.47-3.70, P = 0.0003), advanced TNM stage ((III/IV vs. I/II) OR = 2.78, 95% CI: 1.75-4.41, P < 0.0001), lymph node metastasis ((Positive vs. Negative) OR = 3.06, 95% CI: 1.93-4.86, P < 0.00001), and histological grade ((poorly vs. well/moderately) OR = 2.58, 95% CI: 1.47-4.52, P = 0.001) in patients with cancer. Furthermore, The Cancer Genome Atlas (TCGA) dataset valuated that SBF2-AS1 was upregulated in a variety of tumors, and predicted the worse prognosis. Conclusions: Our results of this meta-analysis demonstrate that high SBF2-AS1 expression may become a potential target for predicting the prognosis of human cancers.
Low-dose IL-2 therapy limits the reduction in absolute numbers of circulating regulatory T cells in rheumatoid arthritis
Authors: Zhang Sheng-Xiao , Wang Jia , Wang Cai-Hong , Jia Rui-Huan , Yan Ming , Hu Fang-Yuan , Liu Guang-Ying , Liu Xue-Yu , Luo Jing , Gao Chong , Li Xiao-Feng 
Published: April 2021

Background: Circulating regulatory T cells (Tregs) are responsible for mediating immune tolerance and maintaining immunological homeostasis. Decreases in Tregs may be involved in the onset of rheumatoid arthritis (RA). Low-dose interleukin-2 (IL-2) has been considered for the treatment of inflammatory diseases mediated by T cells. This study focused on the status of circulating CD4+T subsets and the clinical feasibility of IL-2 therapies in patients with RA. Methods: The subjects included 888 patients with RA and 100 healthy controls (HCs); 233 RA patients received IL-2 treatment with 0.5 million international units (MIU)/day from days 1 through 5. The demographic features, disease activity, and levels of CD4+T cells measured by modified flow cytometry were collected in all RA patients before and after treatment. Results: RA patients had lower absolute Treg counts (but not Th17) compared with HCs, which was associated with disease activity; previously treated RA patients had the fewest circulating Tregs ( p < 0.05). Patients treated with low-dose IL-2 had a three-fold increase in absolute anti-inflammatory Treg counts, as well as a two-fold increase in the other CD4+T subsets. Moreover, post-treatment levels of markers of disease activity in RA patients treated with IL-2 were significantly lower than the baseline values ( p < 0.001), with no apparent side effects. Conclusion: Decreased absolute counts of circulating CD4+T lymphocyte subsets were observed in patients with RA. Circulating Tregs, which mediate immune tolerance, may be involved in the pathogenesis and progression of RA; however, this was ameliorated by low-dose IL-2, without obvious side effects. Plain language summary Low-dose IL-2 treatment for rheumatoid arthritis • Circulating Tregs may be involved in the pathogenesis and progression of RA. • The absolute count of Tregs was significantly correlated with disease activity measures. • Low-dose IL-2 was able to effectively expade Tregs and help for RA patients’ symptoms remission without evaluated side effects.
Comparison of Electromyographic Activity During Hip Extension Exercises Under Gravitational or Inertial Loading Conditions
Authors: Martín-San Agustín Rodrigo , Castillo-Ballesta Lorenzo , Llobat Sancho Javier , Esbri-Navarro Rubén , Sánchez-Barbadora Mariana 
Published: April 2021

Background: Hamstring injury prevention programs include strengthening, especially eccentric exercises using both gravitational and inertial loading. Inertial exercises are characterized by eccentric contractions of high intensity and velocity. This study aimed to analyze the muscular activation of the biceps femoris (BF), semitendinosus (ST), gluteus maximus (GM), and gracilis (GC) muscles during hip extension (HE) exercises performed under both gravitational and inertial loading conditions. Hypothesis: Inertial training would generate a greater activation of HE muscles than gravitational training. Study Design: Cross-sectional study. Level of Evidence: Level 4. Methods: Fifteen resistance-trained men performed the unilateral straight knee bridge (SKB), 45° of HE, and stiff-leg deadlift (SDL) exercises under gravitational and inertial loading conditions. Concentric and eccentric phases were identified with a linear encoder. Differences between load types, exercises, and their interaction were examined to establish the electromyographic (EMG) activity of each muscle and BF/ST ratio. Results: In the concentric phase, inertial loading showed a higher normalized EMG than gravitational loading for BF, ST, and GM. SKB and HE activated BF and ST between 9.6% and 24.3% more than SDL. In the eccentric phase, the inertial modality achieved greater GM activation than the gravitational form (18.1%). BF activation was increased with HE and SKB as compared with SDL (24.4% and 16.4%, respectively), while ST activation was likewise enhanced with HE as compared with SDL (15.1%). Conclusion: Inertial training is more effective than gravitational training for the concentric activation of the hamstring muscles while SDL showed lower hamstring activation than HE and SKB. Therefore, HE and SKB with inertial loading should be taken into account in hamstring training programs. Clinical Relevance: Inertial training is more effective than gravitational training for the concentric activation of the hamstring muscles. HE and SKB with inertial loading should be taken into account in hamstring training programs.
The effect of reconstructive vaginal surgery on quality of life and sexual functions in postmenopausal women with advanced pelvic organ prolapse in intermediate-term follow-up
Authors: Karaca Suna Y 
Published: April 2021

Objective To compare sexual function and quality of life in women who underwent McCall culdoplasty versus sacrospinous ligament fixation for pelvic organ prolapse. Materials and methods This study was conducted in our urogyanecology clinic between July 2015 and June 2019. We included sexually active postmenopausal women who had undergone either McCall culdoplasty ( n:80 patients) or sacrospinous ligament fixation ( n:38 patients) procedure for threatened POP. Patients in both groups were matched according to age and body mass index. Sexual function between both groups was evaluated with the pelvic organ prolapse/urinary incontinence sexual function 12 patient-reported outcome measures (PROMs) and quality of life with the prolapse quality of life (PQOL) PROMs. Results Emotional domain was low in the McCall culdoplasty group (21.4 ± 10.1 vs. 30.8 ± 15.2; p = 0.03). There were no significant differences in other P-QOL domains. Pain during intercourse was more in the sacrospinous ligament fixation group (2.9 ± 1.6 vs. 1.3 ± 1.1; p = 0.04). The mean operation time in the McCall culdoplasty group was shorter than the sacrospinous ligament fixation group ( p = 0.03). There was no difference between the two surgical procedures performed in terms of intraoperative blood loss and hospital stay. The prevalence of recurrence in the McCall culdoplasty group was 6.2%, and that of sacrospinous ligament fixation was 5% ( p = 0.75) in one year follow-up. Conclusion Our study demonstrated that McCall culdoplasty has a more positive effect on QOL and sexuality than sacrospinous ligament fixation in appropriately selected patients. McCall culdoplasty could be considered as a good option in the treatment of advanced pelvic organ prolapse in elderly patients.
Magnetic resonance imaging of avascular necrosis of the femoral head: predictive findings of total hip arthroplasty
Authors: Väänänen Matti , Tervonen Osmo , Nevalainen Mika T 
Published: April 2021

Background Avascular osteonecrosis of the femoral head (AVNFH) is an ischemic condition which despite different treatments often leads to collapse of the femoral head and to total hip arthroplasty. However, the magnetic resonance imaging findings predisposing to disease progression and total hip arthroplasty are somewhat elusive. Purpose To evaluate the magnetic resonance imaging findings of AVNFH and to assess the patterns of findings which may predict total hip arthroplasty. Materials and methods A retrospective study was conducted with a total of 18 diagnosed AVNFH treated with core decompression combined with intraosseous stem cell treatment. After treatment, magnetic resonance imaging follow-ups were done at three-month and one-year follow-up or until total hip arthroplasty. Association Research Circulation Osseous classification and magnetic resonance imaging findings such as the size and the location of the AVNFH, bone marrow edema in femoral neck, effusion and subchondral fracture were evaluated. Results Hips advancing to total hip arthroplasty have more often bone marrow edema in femoral neck (90% vs. 0%), adjacent to necrotic lesion (100% vs. 43%) and in acetabulum (90% vs. 14%), but also subchondral fractures (70% vs. 0%), effusion (80% vs. 29%), and synovitis (80% vs. 14,3%). The greater size and the lateral weight-bearing location of the necrotic lesion also predicted future total hip arthroplasty. Conclusion Hips advancing to total hip arthroplasty have often a combination of pathognomonic AVNFH imaging findings compared to hips not advancing to total hip arthroplasty.
Adverse Outcomes Prediction for Congenital Heart Surgery: A Machine Learning Approach
Authors: Bertsimas Dimitris , Zhuo Daisy , Dunn Jack , Levine Jordan , Zuccarelli Eugenio , Smyrnakis Nikos , Tobota Zdzislaw , Maruszewski Bohdan , Fragata Jose , Sarris George E. 
Published: April 2021

Objective: Risk assessment tools typically used in congenital heart surgery (CHS) assume that various possible risk factors interact in a linear and additive fashion, an assumption that may not reflect reality. Using artificial intelligence techniques, we sought to develop nonlinear models for predicting outcomes in CHS. Methods: We built machine learning (ML) models to predict mortality, postoperative mechanical ventilatory support time (MVST), and hospital length of stay (LOS) for patients who underwent CHS, based on data of more than 235,000 patients and 295,000 operations provided by the European Congenital Heart Surgeons Association Congenital Database. We used optimal classification trees (OCTs) methodology for its interpretability and accuracy, and compared to logistic regression and state-of-the-art ML methods (Random Forests, Gradient Boosting), reporting their area under the curve (AUC or c-statistic) for both training and testing data sets. Results: Optimal classification trees achieve outstanding performance across all three models (mortality AUC = 0.86, prolonged MVST AUC = 0.85, prolonged LOS AUC = 0.82), while being intuitively interpretable. The most significant predictors of mortality are procedure, age, and weight, followed by days since previous admission and any general preoperative patient risk factors. Conclusions: The nonlinear ML-based models of OCTs are intuitively interpretable and provide superior predictive power. The associated risk calculator allows easy, accurate, and understandable estimation of individual patient risks, in the theoretical framework of the average performance of all centers represented in the database. This methodology has the potential to facilitate decision-making and resource optimization in CHS, enabling total quality management and precise benchmarking initiatives.
Lowest Instrumented Vertebra Selection to S1 or Ilium Versus L4 or L5 in Adult Spinal Deformity: Factors for Consideration in 349 Patients With a Mean 46-Month Follow-Up
Authors: Yao Yu-Cheng , Kim Han Jo , Bannwarth Mathieu , Smith Justin , Bess Shay , Klineberg Eric , Ames Christopher P. , Shaffrey Christopher I. , Burton Douglas , Gupta Munish , Mundis Gregory M. , Hostin Richard , Schwab Frank , Lafage Virginie 
Published: April 2021

Study Design: Retrospective cohort study. Objective: To compare the outcomes of patients with adult spinal deformity (ASD) following spinal fusion with the lowest instrumented vertebra (LIV) at L4/L5 versus S1/ilium. Methods: A multicenter ASD database was evaluated. Patients were categorized into 2 groups based on LIV levels—groups L (fusion to L4/L5) and S (fusion to S1/ilium). Both groups were propensity matched by age and preoperative radiographic alignments. Patient demographics, operative details, radiographic parameters, revision rates, and health-related quality of life (HRQOL) scores were compared. Results: Overall, 349 patients had complete data, with a mean follow-up of 46 months. Patients in group S (n = 311) were older and had larger sagittal and coronal plane deformities than those in group L (n = 38). After matching, 28 patients were allocated to each group with similar demographic, radiographic, and clinical parameters. Sagittal alignment restoration at postoperative week 6 was significantly better in group S than in group L, but it was similar in both groups at the 2-year follow-up. Fusion to S1/ilium involved a longer operating time, higher PJK rates, and greater PJK angles than that to L4/L5. There were no significant differences in the complication and revision rates between the groups. Both groups showed significant improvements in HRQOL scores. Conclusions: Fusion to S1/ilium had better sagittal alignment restoration at postoperative week 6 and involved higher PJK rates and greater PJK angles than that to L4/L5. The clinical outcomes and rates of revision surgery and complications were similar between the groups.
Establishment of a New Model of Lumbar Intervertebral Disc Degeneration With Pathological Characteristics
Authors: Jin Yongming , Mao Guangfeng , Yang Chen , Xia Chen , Chen Chuyong , Shi Fangfang , Chen Qi 
Published: April 2021

Study Design: A prospective study. Objectives: Intervertebral disc degenerative disease is a common and frequently-occurring disease in adults and is the main cause of lower back pain. However, there is a lack of universal animal models to study disc degeneration. Methods: Forty-two male New Zealand white rabbits aged 12 months were used in this study. We established an endplate ischemic disc degeneration model though surgical ligation of rabbit lumbar vertebral body segment arteries. Two weeks after surgery, 6 experimental animals were randomly selected for follow-up tests. First, ischemia and lumbar disc degeneration were confirmed using imaging techniques. Then, immunohistochemical staining was performed to observe the growth of the annulus fibrosus. Finally, quantitative polymerase chain reaction, enzyme-linked immunosorbent assay, and western blotting were used to detect mRNA expression and protein content of IL-1α, TNFα, collagen II, MMP-3, aggrecan, and PLA2 in the nucleus pulposus of the disc. Results: Imaging examination confirmed the successful construction of a lumbar disc degeneration model. Histological analysis and biochemical analysis showed a damaged intervertebral disc structure, and collagen II and aggrecan, the key extracellular matrix components of intervertebral discs, were reduced in synthesis and content. The synthesis and expression of IL-1α, TNFα, PLA2, and MMP-3 related to disc catabolism and inflammatory response were enhanced. Conclusions: We successfully constructed a lumbar disc degeneration ischemia model, which provides a novel approach to study the pathological mechanisms involved in discogenic low back pain and to prevent and treat discogenic low back pain.
Comparison of penetrating keratoplasty and deep anterior lamellar keratoplasty in keratoconus eyes with vernal keratoconjunctivitis
Authors: Feizi Sepehr , Javadi Mohammad Ali , Moshtaghion Seyed-Mohamadmehdi , Abolhosseini Mohammad 
Published: April 2021

Purpose: The purpose of the study is to compare outcomes after penetrating keratoplasty (PK) against deep anterior lamellar keratoplasty (DALK) for keratoconus in patients with vernal keratoconjunctivitis (VKC). Methods: Keratoconic patients with VKC who received PK ( n = 55, group 1) or DALK ( n = 62, group 2) were retrospectively enrolled. The Student’s t test, Mann–Whitney test, Fisher’s exact test, chi-square test, and Kaplan–Meier survival curve were used to compare outcomes between the groups. Results: The follow-up period was 59.4 ± 44.1 and 62.4 ± 38.9 months in groups 1 and 2, respectively ( p = 0.70). Postoperative best spectacle-corrected visual acuity was 0.24 ± 0.18 and 0.29 ± 0.19 logMAR, respectively ( p = 0.13). Graft rejection occurred in 34.6% and 25.8% of eyes in groups 1 and 2, respectively ( p = 0.30). Groups 1 and 2 were comparable in the rates of cataract (3.6% and 12.9%, respectively, p = 0.07) and high intraocular pressure (3.6% and 8.1%, respectively, p = 0.31). Compared with the eyes with inactive VKC, PK eyes that experienced postoperative disease reactivation had a higher rate of suture abscesses (10.9% versus 50.0%, respectively, p = 0.01) and suture-tract vascularization (6.5% versus 33.3%, respectively, p = 0.03). Similarly, disease reactivation significantly increased suture abscesses from 27.3% to 51.7% ( p = 0.03) and suture-tract vascularization from 18.2% to 49.6% ( p = 0.005) in the DALK group. The graft survival rates were 95.3% in group 1 and 87.9% in group 2 at the 4-year follow-up, with mean durations of 14.4 and 11.1 months, respectively ( p = 0.20). Conclusion: The results indicate no difference in outcomes between PK and DALK for keratoconus in patients with VKC. Postoperative VKC reactivation increased the rate of suture-related problems after both techniques of keratoplasty.