bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biomechanical study of anterior and posterior pelvic rings using pedicle screw fixation for Tile C1 pelvic fractures: Finite element analysis
Authors: Song Yuanzheng , Shao Changsheng , Yang Ximing , Lin Feng 
Published: August 2022

ObjectiveThe purpose of this study was to analyse the biomechanical characteristics of pedicle screws with different placement methods and diameters in the treatment of Tile C1 pelvic fractures by finite element simulation technology and to compare them with the plate fixation model to verify the effectiveness of pedicle screw fixation.MethodsA three-dimensional digital model of a normal pelvis was obtained using computed tomography images. A finite element model of a normal pelvis containing major ligaments was built and validated (Model 1). Based on the verified normal pelvis finite element model, a Tile C1 pelvic fracture model was established (Model 2), and then a plate fixation model (Model 3) and a pedicle screw fixation model with different screw placement methods and diameters were established (Models 4–15). For all pelvic fracture fixation models, a vertical load of 500 N was applied on the upper surface of the sacrum to test the displacement and stress distribution of the pelvis in the standing state with both legs.ResultsThe finite element simulation results showed the maximum displacement of Model 1 and Models 3–15 to be less than 1 mm. The overall maximum displacement of Models 4–15 was slightly larger than that of Model 3 (the maximum difference was 177.91×10−3mm), but the maximum displacement of iliac bone and internal fixation in Models 4–15 was smaller than that of Model 3. The overall maximum stress (maximum stress of the ilium) and maximum stress of internal fixation in Models 4–15 were less than those in Model 3. The maximum displacement difference and maximum stress difference at the fracture of the pubic ramus between each fixed model were less than 0.01 mm and 1 MPa, respectively. The greater the diameter and number of pedicle screws were, the smaller the maximum displacement and stress of the pelvic fracture models were.The maximum displacement and stress of the pelvic fracture models of the screws placed on the injured side of the pubic region were smaller than the screws on the healthy side.ConclusionBoth the anterior and posterior pelvic rings are fixed with a pedicle screw rod system for treatment of Tile C1 pelvic fractures, which can obtain sufficient biomechanical stability and can be used as a suitable alternative to other implants.The greater the diameter and number of pedicle screws were, the greater the pelvic stability was, and the greater was the stability of the screws placed on the injured side of the pubic region than the screws on the healthy side.
Effectiveness of graded motor imagery protocol in phantom limb pain in amputed patient: Protocol of a randomized clinical trial
Authors: Rierola-Fochs Sandra , Merchán-Baeza Jose Antonio , Minobes-Molina Eduard 
Published: August 2022

Objective
The aim of this study is to analyse the effectiveness of the Graded Motor Imagery (GraMI) protocol in phantom limb pain in amputee patients.

Materials and methods
A randomised clinical trial will be conducted, with two parallel groups and simple blinding, and a phenomenological study with semi-structured interviews. People over the age of 18, with amputation of one limb, with a minimum score of 3 on the visual analogue scale of pain, who are pharmacologically stable and have been discharged from hospital, will be recruited. An initial assessment, a post-intervention assessment (9 weeks) and a follow-up assessment (12 weeks post-intervention) will be performed, in which pain, quality of life, functionality and psychological aspects will be assessed. The aim of the qualitative study is to find out about the experience of living with phantom limb pain and to identify the satisfaction with the intervention. A descriptive, univariate and bivariate quantitative statistical analysis will be performed using the SPSS program, with a 95% confidence level and a statistical significance level of p < 0.05. The qualitative analysis will be carried out using the Atlas.ti 8.0 program, where the different interviews will be analysed, coded and categorised.

Discussion
The GraMI protocol allows the patient to work on motor learning through brain reorganisation, analytical movements, sensory stimulation, and functional activities. In addition, it can help to standardise the use of graded motor imagery in future studies and in clinical practice with this patient profile.

Trial registration
NCT05083611.
AcceSS and Equity in Transplantation (ASSET) New Zealand: Protocol for population-wide data linkage platform to investigate equity in access to kidney failure health services in New Zealand
Authors: Cutting Rachel B. , Webster Angela C. , Cross Nicholas B. , Dunckley Heather , Beaglehole Ben , Dittmer Ian , Irvine John , Walker Curtis , Jones Merryn , Wyld Melanie , Kelly Patrick J. , Wyburn Kate , De La Mata Nicole L. 
Published: August 2022

Background
Kidney transplantation is considered the ideal treatment for most people with kidney failure, conferring both survival and quality of life advantages, and is more cost effective than dialysis. Yet, current health systems may serve some people better than others, creating inequities in access to kidney failure treatments and health outcomes. AcceSS and Equity in Transplantation (ASSET) investigators aim to create a linked data platform to facilitate research enquiry into equity of health service delivery for people with kidney failure in New Zealand.

Methods
The New Zealand Ministry of Health will use patients’ National Health Index (NHI) numbers to deterministically link individual records held in existing registry and administrative health databases in New Zealand to create the data platform. The initial data linkage will include a study population of incident patients captured in the Australia and New Zealand Dialysis and Transplant Registry (ANZDATA), New Zealand Blood Service Database and the Australia and New Zealand Living Kidney Donor Registry (ANZLKD) from 2006 to 2019 and their linked health data. Health data sources will include National Non-Admitted Patient Collection Data, National Minimum Dataset, Cancer Registry, Programme for the Integration of Mental Health Data (PRIMHD), Pharmaceutical Claims Database and Mortality Collection Database. Initial exemplar studies include 1) kidney waitlist dynamics and pathway to transplantation; 2) impact of mental illness on accessing kidney waitlist and transplantation; 3) health service use of living donors following donation.

Conclusion
The AcceSS and Equity in Transplantation (ASSET) linked data platform will provide opportunity for population-based health services research to examine equity in health care delivery and health outcomes in New Zealand. It also offers potential to inform future service planning by identifying where improvements can be made in the current health system to promote equity in access to health services for those in New Zealand.
Post-systolic shortening index by echocardiography evaluation of dyssynchrony in the non-dilated and hypertrophied left ventricle
Authors: Saijo Yoshihito , Wang Tom Kai Ming , Chan Nicholas , Sperry Brett W. , Phelan Dermot , Desai Milind Y. , Griffin Brian , Grimm Richard A. , Popović Zoran B. 
Published: August 2022

Background
Post-systolic shortening index (PSI) is defined as myocardial shortening that occurs after aortic valve closure, and is an emerging measure of regional LV contractile dysfunction. PSI measurement variability amongst software vendor and its relationship with mechanical dyssynchrony and mechanical dispersion index (MDI) remains unknown. We evaluated PSI by speckle-tracking echocardiography from several vendors in patients with increased left ventricular wall thickness, and associations with MDI.

Methods
This is a prospective cross-sectional study of 70 patients (36 hypertrophic cardiomyopathy [HCM], 18 cardiac amyloidosis and 16 healthy controls) undergoing clinically indicated echocardiography. PSI was measured using QLAB/aCMQ (Philips), QLAB/LV auto-trace (Philips), EchoPAC (GE), Velocity Vector Imaging (Siemens), and EchoInsight (EPSILON) software packages, and calculated as 100%×(post systolic strain–end-systole strain)/post systolic strain.

Results
There was a significant difference in mean PSI among controls 2.1±0.6%, HCM 6.1±2.6% and cardiac amyloidosis 6.8±2.7% (p <0.001). Variations between software vendors were significant in patients with pathologic increases in LV wall thickness (for HCM p = 0.03, for amyloidosis p = 0.008), but not in controls (p = 0.11). Furthermore, there were moderate correlations between PSI and both MDI (r = 0.77) and left ventricular global longitudinal strain (r = 0.69).

Conclusion
PSI was greater in HCM and cardiac amyloidosis patients than controls, and a valuable tool for dyssynchrony evaluation, with moderate correlations to MDI and strain. However, there were significant variations in PSI measurements by software vendor especially in patients with pathological increase in LV wall thickness, suggesting that separate vendor-specific thresholds for abnormal PSI are required.
Changes in sociocultural stressors, protective factors, and mental health for US Latina mothers in a shifting political climate
Authors: Non Amy L. , Clausing Elizabeth S. , D’Anna Hernandez Kimberly L. 
Published: August 2022

Background
To investigate changes in sociocultural stressors and protective factors, and mental health in Latina mothers before and after the 2016 Republican presidential nomination.

Methods
We examined changes in sociocultural stressors, protective factors, and mental health from two prospective cohorts of Latina mothers from interior and border US cities (Nashville, TN, n = 39 and San Diego, CA, ns range = 78–83; 2013–2020).

Results
We identified significant longitudinal increases in depression, anxiety, and perceived stress in the border city, and reductions in protective factors (e.g., optimism, social support, and familism) across sites. Discrimination varied by location, and was associated with higher stress only at baseline in the border city, and with higher anxiety in the interior city at follow-up. Acculturative stress was consistently associated with worse mental health across time points in the border city. Various protective factors were associated with reduced stress and anxiety across time points in both cities.

Discussion
We identified decreased mental health at the border city, and reduced protective factors in Latina mothers across both study sites in the years following the 2016 presidential nomination, during a time of shifting sociopolitical climate. We also identify increased acculturative stress and discrimination over time, particularly at the border city. Interventions to maintain and enhance psychosocial protective factors amongst Latina mothers are warranted.
Gastric Peroral Endoscopic Pyloromyotomy for Infants With Congenital Hypertrophic Pyloric Stenosis
Authors: Zhang Hanhua , Liu Zuqiang , Ma Liyun , Li Quanlin , Huang Ying , Dong Kuiran , Ye Hong , Liu Jiangbin , Liu Haifeng , Ren Xiaoxia , Yang Hongbin , Hou Chongzhi , Ge Kuku , Wang Hua , Zhou Pinghong , Fang Ying 
Published: August 2022

INTRODUCTION:
Congenital hypertrophic pyloric stenosis (CHPS), the most common infantile disease requiring surgical intervention, is routinely treated with open or laparoscopic pyloromyotomy. Recently, gastric peroral endoscopic pyloromyotomy (G-POEM) has been used for adult gastroparesis. We aimed to evaluate the efficacy and safety of G-POEM in treating infantile CHPS.

METHODS:
We reviewed data from 21 G-POEM-treated patients at 3 tertiary children's endoscopic centers in China between January 2019 and December 2020. Clinical characteristics, procedure-related parameters, perioperative management, and follow-up outcomes were summarized.

RESULTS:
G-POEM was performed successfully in all patients. The median operative duration was 49 (14–150) minutes. The submucosal tunnels were successfully established along the greater curvature of the stomach in 19 cases, and 2 cases were switched to the lesser curvature because of difficulty. No perioperative major adverse events occurred. Minor adverse events included inconsequential mucosal injury in 5 cases and unsatisfactory closure of the mucosal incision in 1 case. Upper gastrointestinal contrast radiography in all patients showed smooth passage of the contrast agent through the pylorus on postoperative day 3. The growth curves of the patients reached normal levels 3 months after the procedure. No recurrent clinical symptoms occurred in any patient during the median follow-up period of 25.5 (14–36) months.

DISCUSSION:
G-POEM is feasible, safe, and effective for infants with CHPS, with satisfactory clinical responses over a short-term follow-up. Further multicenter studies should be performed to compare the long-term outcomes of this minimally invasive technique with open or laparoscopic pyloromyotomy.
Modelos computacionales en la posturografía
Authors: Luengas Lely Adriana , Wanumen Silva Luis Felipe 
Published: August 2022

Objetivo: Realizar la clasificación y el mapeo de parámetros de balanceo corporal a partir de datos de posturografía estática para diferenciar individuos amputados transtibiales unilaterales de no amputados utilizando técnicas de aprendizaje automático y minería de datos.
Metodología: El balanceo corporal se midió en 74 individuos, 37 amputados por mina antipersonal y 37 controles sanos. Se clasificó la estabilidad según el grupo haciendo uso de aprendizaje automático. Se desarrolló un mapa bidimensional continuo de las alteraciones de la postura utilizando la teoría de la información de Shannon, la prueba de U Mann-Whitney(p<0.05) fue usada con el fin de identificar diferencias entre grupos.
Resultados: Se entrenaron cinco algoritmos de aprendizaje automático, un árbol de decisión, reglas de decisión, una red neuronal, una máquina de soporte vectorial y el clúster. La validación y la comparación se llevaron a cabo con las métricas obtenidas a partir de la matriz de confusión, utilizando validación cruzada para obtener dos subconjuntos. La condición de postura más discriminativa se clasificó como desplazamiento del centro de presión (CoP) lado no amputado dirección antero-posterior. El algoritmo de mayor desempeño fue la máquina de soporte vectorial y el de menor desempeño el clúster, sin embargo, todos los modelos realizaron clasificación de grupos con una puntuación F1 mayor a 0,4.
Conclusiones: El mapeo de las características del desplazamiento del balanceo en el espacio 2D reveló agrupaciones claras entre amputados y controles, lo cual confirma que el aprendizaje automático puede ayudar en la clasificación de patrones de balanceo clínico medidos con posturografía estática. Los modelos computacionales permiten evaluar de forma objetiva la estabilidad, así como reconocer el aporte de contralateral en el control de la postura bípeda estática ya que compensa la no existencia de los aferentes y eferentes de ipsilateral.
Financiamiento: Artículo de investigación científica derivado del proyecto de investigación “Caracterización de la Estabilidad en Amputados Transtibiales Unilaterales”, financiado por la Universidad Distrital Francisco José de Caldas, Bogotá, Colombia.
Multitemporal Analysis of Urban Expansion in the Municipality of Madrid, Cundinamarca, between 1977 and 2020
Authors: García César Augusto , Culma Tamara María Fernanda 
Published: August 2022

Context: Given the increasing population concentration, both the proximity of the town of Madrid to the city of Bogotá and the growing metropolitan area around the latter have a significant influence on the increased urbanization and the change in land use in the town of Madrid, Cundinamarca.
Objective: The objective of this study was to carry out a multitemporal analysis of the change in coverage and land use caused by urban expansion in the municipality of Madrid between 1977 and 2020.
Methodology: Satellite images were observed through supervised classification, following the Corine Land Cover methodology, which was adapted for the Colombian context, and utilizing geographic information systems. Area variation analyses were performed for each classification in each of the evaluated years.
Results: The data obtained show that the forest cover area and seminatural zones have been reduced by 86% in a period of 43 years, and that artificial territories have progressively become predominant in each of the years, even reaching a coverage greater than 50% of the municipality area. The agricultural territories have maintained 66,95% of the surface of the municipality, and they correspond the land use with the largest occupied area for the evaluated period, which shows the importance of the soil for the economic development of the population.
Conclusions: This situation shows that population growth and urban expansion cause variations in coverage and land uses. Their valuation is an aspect that must be considered when elaborating development plans for municipal entities.
Pengaruh Paparan Aerosol Rokok Elektrik Terhadap Profil Hematologis Rattus norvegicus
Authors: Kusumawati Natasha Fiorentina , Widiyani Tetri , Listyawati Shanti 
Published: August 2022

Rokok elektrik (RE) merupakan inovasi terbaru rokok yaitu tanpa proses pembakaran tar dan tembakau dan dianggap lebih aman dibandingkan rokok konvensional. Penelitian ini bertujuan mengetahui pengaruh paparan aerosol RE terhadap profil hematologis tikus putih (Rattus norvegicus) yang meliputi kadar hemoglobin, eritrosit, leukosit serta jenis leukosit. Dalam penelitian ini hewan uji Rattus norvegicus dibagi menjadi 4 kelompok dengan perlakuan yang berbeda yaitu diberi 0x paparan/hari (kontrol); 1x paparan/hari, 2x paparan/hari, dan 3x paparan/hari selama 14 hari. Setiap paparan dilakukan selama 5 menit (10 kali hembusan). Sampel darah diambil pada hari ke-0, hari ke-7 dan ke-14 melalui sinus orbitalis. Jumlah eritrosit dan leukosit dihitung dengan metode hitung bilik Neubauer. Kadar hemoglobin ditentukan menggunakan metode Sahli, dan persentase jenis leukosit dihitung dari preparat apus darah dengan pewarnaan Giemsa. Data yang diperoleh dianalisis secara deskriptif. Hasil penelitian menunjukkan terjadi peningkatan kadar hemoglobin dan jumlah eritrosit yang sejalan dengan peningkatan frekuensi dan durasi paparan RE sebagai kompensasi dari kondisi hipoksia. Jumlah leukosit juga cenderung meningkat, tetapi peningkatannya tidak linier dengan peningkatan frekuensi dan durasi paparan RE. Persentase limfosit, monosit dan eosinofil dibandingkan kontrol cenderung meningkat sedangkan persentase neutrofil cenderung menurun. Dengan demikian paparan RE dapat mempengaruhi profil hematologis hewan uji. E-cigarettes are the latest innovations of cigarettes without process of burning tar and tobacco. They are considered safer than conventional cigarettes. The purpose of this study was to determine the effect of e-cigarette aerosol exposure on the hematological profiles of Wistar rats (Rattus norvegicus). Rats were exposed to e-cigarette aerosol in different frequencies: 0x (control); once; twice; and 3x exposure/day. The experiment was ended on day 14th. Blood samples were taken through the orbital sinus on the day 0, 7th and 14th. Erythrocyte and leucocyte numbers were measured in Neubauer chamber count. Hemoglobin levels was determined by using Sahli method, and the percentage of leukocyte types was calculated based on Giemsa stained blood smear preparations. Data were analyzed descriptively. The results showed that hemoglobin levels and erythrocyte numbers tend to increase in line to the e-cigarette aerosol exposure as a compensation for hypoxic conditions. The leukocyte numbers also tends to increase, although the increase is not in line to the increase of exposure frequency and duration. The percentage of lymphocytes, monocytes and eosinophils tend to increase compared to the control group, while the percentage of neutrophils tends to decrease. Thus e-cigarette aerosol exposure affected the haematological profiles of rats
Optimization of shared bike paths considering faulty vehicle recovery during dispatch
Authors: Shi Donghao 
Published: August 2022

Abstract
With the rapid development of China’s social economy and the improvement of the level of urbanization, urban transportation has also been greatly developed. With the booming development of the internet and the sharing economy industry, shared bicycles have emerged as the times requirement. Shared bicycles are a new type of urban transportation without piles. As a green way of travel, shared bicycles have the advantages of convenience, fashion, green, and environmental protection. However, many problems have also arisen in the use of shared bicycles, such as man-made damage to the vehicle, the expiration of the service life of the vehicle, etc. These problems are unavoidable, and the occurrence of these failure problems will also cause serious harm to the use of shared bicycles. This article aims to study the path optimization of shared bicycles considering the recovery of faulty vehicles during dispatching. Based on the K-means spatial data clustering algorithm, a path optimization experiment of shared bicycle recycling scheduling considering the recycling of faulty vehicles is carried out. The experiment concluded that the shared bicycle recycling scheduling path based on K-means clustering planning significantly reduces the total time spent and the total cost of performing recycling scheduling tasks. Among them, the unit price of recycling and dispatching of each faulty shared bicycle has dropped by 4.1 yuan compared with the market unit price. The conclusion shows that the shared bicycle recycling scheduling path considering faulty vehicle recycling based on K-means clustering algorithm has been greatly optimized.
Performance Characteristics of a Machine-Learning Tool to Predict 7-Day Hospital Readmissions
Authors: Morrison John M , Casey Brittany , Sochet Anthony A. , Dudas Robert A. , Rehman Mohamed , Goldenberg Neil A. , Ahumada Luis , Dees Paola 
Published: August 2022

OBJECTIVES
To develop an institutional machine-learning (ML) tool that utilizes demographic, socioeconomic, and medical information to stratify risk for 7-day readmission after hospital discharge; assess the validity and reliability of the tool; and demonstrate its discriminatory capacity to predict readmissions.

PATIENTS AND METHODS
We performed a combined single-center, cross-sectional, and prospective study of pediatric hospitalists assessing the face and content validity of the developed readmission ML tool. The cross-sectional analyses used data from questionnaire Likert scale responses regarding face and content validity. Prospectively, we compared the discriminatory capacity of provider readmission risk versus the ML tool to predict 7-day readmissions assessed via area under the receiver operating characteristic curve analyses.

RESULTS
Overall, 80% (15 of 20) of hospitalists reported being somewhat to very confident with their ability to accurately predict readmission risk; 53% reported that an ML tool would influence clinical decision-making (face validity). The ML tool variable exhibiting the highest content validity was history of previous 7-day readmission. Prospective provider assessment of risk of 413 discharges showed minimal agreement with the ML tool (κ = 0.104 [95% confidence interval 0.028–0.179]). Both provider gestalt and ML calculations poorly predicted 7-day readmissions (area under the receiver operating characteristic curve: 0.67 vs 0.52; P = .11).

CONCLUSIONS
An ML tool for predicting 7-day hospital readmissions after discharge from the general pediatric ward had limited face and content validity among pediatric hospitalists. Both provider and ML-based determinations of readmission risk were of limited discriminatory value. Before incorporating similar tools into real-time discharge planning, model calibration efforts are needed.