Case Management Research Articles

Characterization of Disease Patterns in Children with Intracranial Abscesses for Enhanced Clinical Decision-Making

Background: Intracranial suppurative infections in pediatric patients, while rare, pose a significant risk to patient mortality. Early recognition and fast initiation of diagnosis and treatment are crucial to prevent fatal outcomes. Between December 2022 and May 2023, a significant cluster of nine cases emerged, each necessitating neurosurgical intervention. This series highlights an important trend in clinical outcomes and raises questions about underlying factors contributing to this pattern. The need for surgical procedures in all instances suggests a commonality in severity, warranting further investigation into potential causes and preventative measures. This retrospective monocentric study aims to explore the clinical features associated with these cases to identify specific disease patterns that can expedite management in clinical practice. Methods: Cramer’s V effect size was employed to evaluate combinations of clinical features, followed by Fisher’s exact test applied to a constructed contingency table. A p-value was assessed for significance analysis, with combinations achieving a Cramer’s V value of 0.7 or higher being classified as exhibiting very strong correlations. Results: The analysis revealed distinct patterns of clinical features among children diagnosed with intracranial abscesses. Significant associations were identified, including correlations between sinusitis and Streptococcus pyogenes, and fever accompanied by affected temporal, frontal, and frontobasal lobe regions. Conclusions: Despite the generally limited statistical analysis of pediatric intracranial abscesses in the existing literature, this study provides meaningful significant associations between clinical features, delineating specific disease patterns for children with intracranial abscesses. By addressing this gap, the findings contribute valuable insights and offer a framework that could enhance clinical decision-making and support timely disease management in pediatric cases.

Comprehensive Analysis of Liver Biopsies in a Tertiary Care Hospital: A Retrospective Histopathological and Clinical Correlation Study

Liver biopsy (LB) served as a vital diagnostic tool for cases with notable alterations in liver function tests and for diagnosing a range of liver diseases, including chronic liver disease, cirrhosis, primary biliary cirrhosis, and hepatic neoplasms. Patients presenting with liver pathology often exhibited nonspecific symptoms, such as abdominal discomfort, nausea, vomiting, fever, indigestion, and flatulence. Based on patients' clinical history and radiological findings that suggested liver disease, a liver biopsy was frequently recommended, as it provided definitive diagnostic insights. Histopathological analysis of liver biopsies offered critical information on disease severity, grading, staging of liver tumors, and the presence of any coexisting hepatic conditions.This study retrospectively examined liver biopsies submitted to the Department of Pathology, correlating histopathological findings with clinical and radiological data. Through this integration, the research contributed to improved diagnosis, management, and follow-up of liver disease cases in a tertiary care setting.

Management of a complex case of Fournier's gangrene in a female patient with ulcerative colitis.

Management of a complex case of Fournier's gangrene in a female patient with ulcerative colitis.

Results of a Randomized Wait-List Controlled Trial of CAYA: A Nurse Case Management HIV Prevention Intervention for Youth Experiencing Homelessness.

Youth experiencing homelessness (YEH) face challenges that increase their susceptibility to HIV/STIs. Nurse case management is effective in managing the complex needs of populations experiencing homelessness and reducing HIV risk. A randomized wait-list control study conducted between September 2019 to May 2023 evaluated the CAYA "Come As You Are" intervention. This nurse-led HIV prevention for YEH aged 16-25 years focused on the uptake of HIV prevention methods: pre- and post-HIV exposure prophylaxis (PrEP, nPEP), HIV/STI testing and treatment, sober sex, and condom use. Secondarily, we examined intervention impact on housing stability. Descriptive statistics were calculated by study arm. Multiple imputation (m = 10) was used for missing values and intervention effects were estimated from Bayesian multilevel models with noninformative priors. Participants (N = 450) were 21.1 years old on average, 62% Black, 11% Hispanic, 11% White, and 10% other race and reported being homeless for an average of 3 years. An intervention effect was found for PrEP use, which showed a larger increase from baseline to first follow-up (OR = 3.27; 95% Cr.I.: 1.13 to 10.14). No intervention impact was found for nPEP use, HIV and STI cases, sober sex, or condom use. Sheltering arrangements improved from baseline to the first follow-up in both groups with increase in shelter stability (OR = 3.85; 95% Cr.I.: 1.61 to 10.30) and decreased shelter transiency (OR = 0.29; 95% Cr.I.: 0.14 to 0.60). This study demonstrates that a personalized, nurse-led HIV prevention approach increased uptake of some but not all HIV prevention strategies among YEH. CLINICAL TRIAL REGISTRATION NUMBER: NCT03910218.

Evaluate the Differential Effectiveness of the Case Management and Primary Nursing Models in the Implementation of Discharge Planning.

This study aims to compare the effectiveness of the case management model and the primary nursing care model by focusing on hospital stay length, readmission, follow-up resource utilisation and survival. To improve patient continuity of care, a discharge planning team has been established at the hospital to implement the service concept of long-term medical care. The team works with a multidisciplinary medical team to provide case management, which ensures high-quality patient care. Retrospective case-control study. This study collected data from the medical record information system database and the Ministry of Health and Welfare's care service management information system to explore medical and follow-up care utilisation of patients discharged between 2017 and 2018. This study followed the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines, with the checklist used to ensure transparent and complete reporting of the methodology and results. To ensure comparability between the case management model group and the primary nursing model group, propensity score matching was used. After matching, 660 individuals from the case management model group and 2876 individuals from the primary nursing model group were selected for further analysis. In this study, patients were primarily involved in the research as participants, providing data through their medical records for analysis. However, no direct involvement from the public or patients was used in the planning or design stages of the research. The study found that factors such as activities of daily living (ADL) score ≤ 60 points, catheterisation, poor chronic disease control and inadequate primary caregiver capacity can lead to longer hospitalisations. Males and patients with catheters have a higher risk of readmission within 30 days, and men, those aged ≥ 75 years, those with ADL score ≤ 60, catheterisation, pressure sores or unclean wounds, financial problems, insufficient primary caregiver capacity and those readmitted within 14 days after discharge had significantly increased mortality after discharge. Although the case management model group had higher hospitalisation days, they had lower readmission rates and higher survival rates than the primary nursing model group. Early consultation with the case manager for discharge planning can help patients to continue to receive care and utilise relevant resources after returning home. Identifying and addressing patient-specific factors can significantly improve patient outcomes by reducing hospitalizations and readmissions, and lowering mortality rates. The case management model is more effective than the primary nursing care model in reducing readmission rates and increasing survival rates. Early consultation with case managers for discharge planning is crucial to ensuring patient care continuity and resource utilization.

COVID-19 inflammatory signature in a Mozambican cohort: unchanged red blood series and reduced levels of IL-6 and other proinflammatory cytokines.

Alterations in haematological, biochemical parameters and cytokine levels, were reported in patients with COVID-19, however, there is an underrepresentation of the African population, which could provide evidence for understanding SARS-CoV-2 pathogenesis and useful tools for clinical management of cases. In this study, we aimed to determine the haematological, biochemical and cytokine profile in Mozambican individuals with SARS-CoV-2. A cohort of 85 Mozambican individuals with RT-PCR SARS-CoV-2 results, was stratified into negative, asymptomatic, mild, moderate, and severe categories. Haematological, biochemical and cytokines measurement were performed on samples from the study participants. Principal component analysis (PCA) was performed to identify similar patterns among the study cases. Comparisons between groups were performed using the Kruskal-Wallis test. Receiver operating characteristic (ROC) and area under the curve (AUC) analysis were conducted to evaluate the ability of these parameters to distinguish severe from non-severe cases of SARS-CoV-2 infection. SARS-CoV-2 infection was associated with a significant (p < 0.05) decrease in peripheral blood absolute counts of total lymphocytes and eosinophils, below the reference values along with no abnormal change (p > 0.05) in red blood cell count, haemoglobin, platelets and other red series parameters. At the serum level, SARS-CoV-2 infection was associated with an increase in serum levels of C-reactive protein (C-RP) and glucose above the reference values and to a significant reduction a significant (p < 0.05) reduction in levels of interferon-gamma (INF-γ), Tumour Necrosis Factor alfa (TNF-α) and the interleukin 1 beta (IL-1β) and IL-6 in severe cases, when compared to negative cases. Haematological, biochemical and cytokine profiles segregate severe from non-severe cases of COVID-19 with an excellent performance of C-RP (AUC = 0.95; p < 0.001) and good performance of lymphocytes (AUC = 0.88; p < 0.001) and IL-15 (AUC = 0.86; p < 0.001). The lack of variation in red and platelet series, coupled with a decrease in the levels of classical pro-inflammatory in severe cases, deviates from what has been reported in other contexts suggesting, that there may be peculiarities in COVID-19 manifestation within the context of this study population. Furthermore, these results identify parameters with potential for clinical management of COVID-19 and therefore good resource allocation, particularly for severe cases.

Orthodontic-orthognathic combined case management in postgraduate orthodontic and oral maxillofacial surgery programs.

With the development of three-dimensional (3D) image, the 3D virtual surgical planning (VSP) system has been broadly used in the treatment planning of orthodontic-orthognathic cases. This study aimed to understand the current education status regarding the use of orthodontic-orthognathic surgical planning tools in the postgraduate orthodontic and oral and maxillofacial surgery (OMFS) programs in North America. An electronic multiple-choice survey was sent via email with 2-week and 1-month follow-ups, requesting anonymous participation of program directors/department chairs from all postgraduate orthodontic and OMFS programs in North America. Responses were collected directly on Qualtrics for analysis. The response rate was 25.68% for orthodontic and 34.34% for OMFS programs. Two-dimensional traditional surgical planning (TSP) at initial treatment planning and 3D VSP right before surgery were most commonly utilized in both specialty programs. All responded postgraduate OMFS programs utilized VSP, yet 26.32% of responded orthodontic programs did not utilize VSP. For the surgical outcomes, fewer orthodontic programs were highly satisfied than OMFS programs. More orthodontic programs warranted secondary surgery at a higher rate due to the unsatisfied outcome. Additionally, the orthodontic programs that did not use VSP showed higher unsatisfied surgical outcomes than the programs that used VSP. Moreover, there were discrepancies between orthodontic and OMFS programs regarding the perceived level of collaboration of each other on the surgical planning for the patients. There were discrepancies between orthodontic and OMFS programs regarding the utilization of VSP, treatment outcomes satisfaction, and perceived level of collaboration on surgical planning for the patients.

Open sternal fracture with bilateral dislocation of the sternoclavicular joints after a high-speed bicycle accident: a case report

BackgroundOnly a few cases of bilateral traumatic sternoclavicular dislocations have been reported in the literature. This injury is considered one of the rarest injuries of the human musculoskeletal system. Therefore, we present the first documented case of a cyclist with a third-degree open thoracic trauma (Gustilo–Anderson 3a) associated with a dislocated manubrium sterni fracture in the upper thoracic aperture, bilateral anterior dislocations of the sternoclavicular joints, rib fractures, and pleural ruptures.Case presentationThe patient, a 27-year-old Caucasian male, incurred this injury while participating in a professional cycling race at Nürburgring, Germany and received immediate interdisciplinary surgical treatment and has encountered no complications. We conducted a 1-year follow-up and present the clinical findings of this follow up. Additionally, we conducted a comprehensive review of the existing literature on this injury.ConclusionsImmediate interdisciplinary intervention, including surgical repair and meticulous postoperative care, facilitated successful patient recovery. This underscores the critical role of comprehensive trauma management in complex polytrauma cases. In conclusion, this case report highlights the rarity and complexity of a traumatic injury involving bilateral sternoclavicular dislocation, with this case being the first case reported with concomitant open thorax trauma. Our patient benefited greatly from immediate air-bound transportation to an interdisciplinary care provider, which houses both thoracic and trauma surgery departments.

Mathematical analysis of the effects of precarious health system on COVID-19 transmission dynamics: case of Burkina Faso

n the early moments of the pandemic of coronavirus disease 2019 (COVID-19), the level of effectiveness in treatment and management of patients was limited due to the lack of effective medications and adapted infrastructures in several countries especially in most developing countries. In this study, we propose an SIR-pattern model to investigate the epidemiological effect of delay in hospitalization and case managements. After computing the basic reproduction number thanks to the Next Generation Matrix method, we proved that the model has a locally asymptotically stable disease-free equilibrium whenever the basic reproduction number is less than one, and condition which ensure the appearance of two endemic equilibria indicating the possibility of having backward bifurcation is determined. When the basic reproduction number exceeds one, Lyapunov functional technique is used to establish the global stability of the unique endemic equilibrium point. Also, we presented a local sensitivity analysis that gives better understanding of the role of each model parameter appearing in the basic reproduction number. Numerical simulation of the model is also performed to corroborate the analytical results. Finally, we fitted our model by using reported data for Burkina Faso, and the results showed that it can be used for predicting the disease outcomes.

A cross-sectional study of point-of-care lactate testing in integrated community care management (ICCM) for children with acute respiratory illness in rural uganda.

Integrated community case management (iCCM) programs leverage lay village health workers (VHWs) to carry out the initial evaluation of children with common conditions including malaria, pneumonia and diarrhea. Therefore, it is imperative that VHWs are able to identify children who are critically ill and require referral to a health facility. Elevated venous lactate levels have been associated with severe illness and adverse health outcomes, including death. However, lactic acidosis may not be recognized in rural settings because it is not routinely measured outside of hospitals and research studies. Point-of-care lactate tests may help identify patients in need of a higher level of care and improve VHWs' ability to make timely and appropriate referrals. The study was a cross-sectional evaluation of children aged <5 y presenting to VHWs in rural southwestern Uganda with complaints of fever and cough. Demographics, clinical presentation, evaluation, management and disposition were recorded. VHWs were trained and instructed to perform lactate testing using a point-of-care assay in eligible participants. During the study period, 238 children were enrolled and completed an initial assessment. Of the 204 participants included in the analysis, 113 (55.4%) were female, and the median (IQR) age was 23 (9-36) months. Most participants, 139/200 (69.5%), had negative results on the malaria rapid diagnostic test. The median lactate level was 2.1mmol/L; 12% (24/204) had a lactate ≥3.5 mmol/L and only nine participants (4.4%) had a lactate ≥5mmol/L. Having a lactate level above either cut-off was not associated with the presence of danger signs at presentation. Few children presenting with fever and cough to VHWs in western Uganda had elevated lactate levels. However, most of the children with elevated lactate levels did not otherwise satisfy established iCCM criteria based on physical examination findings for referral to a health facility. Therefore, while elevated lactate was not associated with danger signs in this small study, it is possible that there is under-recognition of severe illness using current iCCM guidelines.

Malaria treatment for prevention: a modelling study of the impact of routine case management on malaria prevalence and burden

BackgroundTesting and treating symptomatic malaria cases is crucial for case management, but it may also prevent future illness by reducing mean infection duration. Measuring the impact of effective treatment on burden and transmission via field studies or routine surveillance systems is difficult and potentially unethical. This project uses mathematical modeling to explore how increasing treatment of symptomatic cases impacts malaria prevalence and incidence.MethodsLeveraging the OpenMalaria stochastic agent-based transmission model, we first simulated an array of transmission intensities with baseline effective treatment coverages of 28%, 44%, and 54% incorporated to reflect the 2023 coverage distribution across Africa, as estimated by the Malaria Atlas Project. We assessed the impact of increasing coverage to as high as 60%, the highest 2023 estimate on the continent. Subsequently, we performed simulations resembling the specific subnational endemicities of Kenya, Mozambique, and Benin, using the Malaria Atlas Project estimates of intervention coverages to reproduce historical subnational prevalence. We estimated the impact of increasing effective treatment coverage in these example settings in terms of prevalence reduction and clinical cases averted in children under 5 years old and the total population.ResultsThe most significant prevalence reduction – up to 50% – was observed in young children from lower transmission settings (prevalence below 0.2), alongside a 35% reduction in incidence, when increasing effective treatment from 28% to 60%. A nonlinear relationship between baseline transmission intensity and the impact of treatment was observed. Increasing effective treatment coverage to 60% reduced the risk in high-risk areas (prevalence in children under 5 years old > 0.3), affecting 39% of young children in Benin and 20% in Mozambique previously living in those areas. In Kenya where most of the population lives in areas with prevalence below 0.15, and case management is fairly high (53.9%), 0.39% of children were estimated to transition to lower-risk areas.ConclusionsImproving case management directly reduces the burden of illness, but these results suggest it also reduces transmission, especially for young children. With vector control interventions, enhancing case management can be an important tool for reducing transmission intensity over time.

Managing Eating Disorders Within Medicaid-Funded Health Care Systems in California.

This study describes the current management of patients with eating disorders (EDs) served by publicly-funded Medicaid behavioral health systems. Behavioral health leaders across nine counties in California met on a quarterly basis to share experiences, challenges, and lessons in the management of EDs within publicly-funded service systems. Detailed notes were taken, and a qualitative content analysis was undertaken to identify key themes. County leadership noted insufficient outpatient capacity and difficulty building capacity for ED treatment, in addition to extraordinary challenges when facilitating admission to out-of-network higher level of care programs, at significant expense. Several challenges were identified in building an internal ED workforce, including the fact that many providers weren't eager to treat EDs due to training burden, patient complexity, and high levels of clinician burnout. When a higher level of care was required due to lack of outpatient resources or patient symptom severity or complexity, leaders dedicated significant resources to identify and contract with an appropriate program and secure the necessary funds. Our study supports the need for specialized ED treatment and case management, as well as standardized processes and centralized resources, in Medicaid-managed care. Findings also indicate the importance of protecting against clinician burnout, possibly through reduced caseload expectations, financial incentives, or increased support. Future policy change could reduce administrative burden and clinician burnout by facilitating admission to and reimbursement for higher levels of care.

Efficacy of Nebulized Dexmedetomidine and Lignocaine Inhalation versus Lignocaine Alone as Premedication for Flexible Fiber-optic Bronchoscopy under Sedation: A Randomized Comparative Study.

Airway management is an integral part of general anesthesia, allowing ventilation and oxygenation and working as a mode for delivering anesthetic gases. Awake fiber-optic-guided intubation is an essential component of airway management in difficult cases. We aim to study the benefits of nebulized dexmedetomidine with lignocaine over lignocaine alone for anesthetizing the airway for flexible fiber-optic bronchoscopy. In the study, after written informed consent, 50 patients were randomly allocated into two equal groups of 25 each. The intervention group received dexmedetomidine with lignocaine nebulization, while the control group received lignocaine nebulization alone. Baseline pulse rate, blood pressure, and, at regular intervals, cough, sedation, and pain scores were recorded along with the patient satisfaction score. Parametric data were analyzed by the Student's t-test, while nonparametric data were analyzed by the Wilcoxon Mann-Whitney U test. Out of a total of 54 patients, 4 patients did not give consent to participate in the study. The demographic profile was comparable in both groups. The pulse rate was comparable in both groups throughout the procedure; however, 10 min after the procedure, the pulse rate in the lignocaine group was (mean ± standard deviation) 114.2 ± 11.52, while in the intervention group, it was 87.32 ± 7.24 with a P = 0.027. The mean blood pressure was comparable throughout the procedure. The cough score yielded a Z-score of -5.12 and a P < 0.00001 favoring the dexmedetomidine group. Similarly, Richmond agitation-sedation score and Visual Analog Scale (VAS) also favored the intervention group, with P < 0.00054 and P < 0.00001 in RASS and VAS, respectively. Patient satisfaction score analysis found a Z-score of -5.29 and a P < 0.00001. The overall results favored dexmedetomidine with lignocaine nebulization over lignocaine alone for anesthetizing airways for flexible fiber-optic bronchoscopy.

Surgical Management of Symptomatic Recurrent/Progressive Craniopharyngioma: Is There a Gold-Standard Approach?

The standard treatment for craniopharyngiomas (CPs) involves either initial gross total resection or subtotal resection with adjuvant radiotherapy. However, there is no consensus regarding the management of recurrent cases. We reviewed a series of patients with CP to evaluate the characteristics of patients with recurrent/progressing CP. We retrospectively reviewed 31 patients with biopsy-proven recurrent/progressed CP who were initially operated on at our clinic from 2015 to 2023. Demographic and clinical data, including age, sex, tumor localization, lesion size and features, radiological findings, and endocrine, neurologic, and ophthalmological issues, were compared between those with and without recurrence. Fifteen out of 31 patients (48.4%) underwent transnasal/transsphenoidal endoscopic surgery; the remaining 16 underwent microscopic transcranial or neuroendoscopic surgery. After treatment, recurrence and events (any medical condition related to the patient's current condition other than recurrence) were observed in 48.4% and 32.3% of the cases, respectively. There were no statistically significant disparities between patients with and without recurrence in terms of age, tumor dimensions, tumor localization, gender distribution, surgical modality, or the presence of calcifications or hydrocephalus (p > 0.05). The highest and lowest overall survival was 25 years and 6 months, respectively. The management of recurrent CP is too complicated to fit into a standard treatment algorithm. Therefore, surgical treatment for these patients should be individualized and planned according to patient symptoms and radiological findings, which is presumably a more versatile, efficient, and safe approach for recurrent CPs.

Firearm Injury Prevention and Survivor Interventions: A Scoping Review.

To examine components of firearm injury prevention and survivor response programs, their outcomes, and gaps in this body of research. A total of 100 publications were identified across four databases: PubMed/Medline, PsycInfo, CINAHL, and Scopus. Articles were screened for inclusion in the scoping review and details were extracted into an electronic table for synthesis. A total of 27 articles were included. Education on firearm injury prevention was shown to be feasible and acceptable in health care settings, including emergency departments. Firearm survivor interventions to reduce violent injury recidivism may include peer or mentored support along with case management for coordination of mental health services, vocational training, and other services to address social determinants of health. Other community initiatives to clean up abandoned lots and engage community members in creating safe neighborhoods have been shown to reduce overall gun violence. Multi-level interventions that encompass education on reducing firearm injuries, strategies to improve psychosocial conditions and access to mental health services, as well as meeting the needs of firearm injury survivors, their families, and communities, are needed. Health sector and community partnerships can lead to integrated and sustainable programs to achieve safer neighborhoods and improve psychosocial outcomes for individuals affected by gun violence and impacted communities. [Journal of Psychosocial Nursing and Mental Health Services, xx(xx), xx-xx.].

An exploratory study on client service experience for health protection of medicaid case managers in Korea

An exploratory study on client service experience for health protection of medicaid case managers in Korea

Digital Transformation in Healthcare : Leveraging Technology to Enhance Patient Care

This article examines the successful implementation of Pega's Healthcare Customer Service and Care Management solutions at a major healthcare provider, demonstrating how digital transformation can revolutionize patient care delivery while optimizing operational efficiency. The implementation, which focused on integrated care coordination, patient case management, and compliance frameworks, resulted in significant improvements, including a 20% reduction in hospital readmissions, a 30% reduction in administrative costs, and a 25-35% reduction in operational costs. The organization achieved enhanced patient outcomes, streamlined operations, and improved regulatory compliance through comprehensive data integration, automated workflows, and user-centric design. The article highlights how strategic digital transformation initiatives, aligned with industry best practices and supported by robust change management, can successfully address healthcare's complex challenges while positioning organizations for future innovation in care delivery.

Opportunities of integrated care to improve equity for adults with complex needs: a qualitative study of case management in primary care

BackgroundPeople living in precarious socio-economic conditions are at greater risk of developing mental and physical health disorders, and of having complex needs. This places them at risk of health inequity. Addressing social determinants of health (SDH) can contribute to reducing this inequity. Case management in primary care is an integrated care approach which could be an opportunity to better address SDH. The aim of this study is to better understand how case management in primary care may address the SDH of people with complex needs.MethodsA case management program (CMP) for people with complex needs was implemented in four urban primary care clinics. A qualitative study was conducted with semi-structured interviews and a focus group with key informants (n = 24). An inductive thematic analysis was carried out to identify emerging themes.ResultsPrimary care case managers were well-positioned to provide a holistic evaluation of the person’s situation, to develop trust with them, and to act as their advocates. These actions helped case managers to better address individuals’ unmet social needs (e.g., poor housing, social isolation, difficulty affording transportation, food, medication, etc.). Creating partnerships with the community (e.g., streetworkers) improved the capacity in assisting people with housing relocation, access to transportation, and access to care. Assuming people provide their consent, involving a significant relative or member of their community in an individualized services plan could support people in addressing their social needs.ConclusionsCase management in primary care may better address SDH and improve health equity by developing a trusting relationship with people with complex needs, improving interdisciplinary and intersectoral collaboration and social support. Future research should explore ways to enhance partnerships between primary care and community organizations.

Enhanced predictability and interpretability of COVID-19 severity based on SARS-CoV-2 genomic diversity: a comprehensive study encompassing four years of data.

Despite the end of the global Coronavirus Disease 2019 (COVID-19) pandemic, the risk factors for COVID-19 severity continue to be a pivotal area of research. Specifically, studying the impact of the genomic diversity of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) on COVID-19 severity is crucial for predicting severe outcomes. Therefore, this study aimed to investigate the impact of the SARS-CoV-2 genome sequence, genotype, patient age, gender, and vaccination status on the severity of COVID-19, and to develop accurate and robust prediction models. The training set (n = 12,038), primary testing set (n = 4,006), and secondary testing set (n = 2,845) consist of SARS-CoV-2 genome sequences with patient information, which were obtained from Global Initiative on Sharing all Individual Data (GISAID) spanning over four years. Four machine learning methods were employed to construct prediction models. By extracting SARS-CoV-2 genomic features, optimizing model parameters, and integrating models, this study improved the prediction accuracy. Furthermore, Shapley Additive exPlanes (SHAP) was applied to analyze the interpretability of the model and to identify risk factors, providing insights for the management of severe cases. The proposed ensemble model achieved an F-score of 88.842% and an Area Under the Curve (AUC) of 0.956 on the global testing dataset. In addition to factors such as patient age, gender, and vaccination status, over 40 amino acid site mutation characteristics were identified to have a significant impact on the severity of COVID-19. This work has the potential to facilitate the early identification of COVID-19 patients with high risks of severe illness, thus effectively reducing the rates of severe cases and mortality.

A new nomogram for predicting extraurothelial recurrence in patients with upper urinary tract urothelial carcinoma following radical nephroureterectomy

PurposeWe sought to develop and validate a nomogram for predicting extra-urinary recurrence (EUR) following radical nephroureterectomy (RNU) in patients with upper urinary tract urothelial carcinoma (UTUC).MethodsData from 556 UTUC patients post-RNU at the First Hospital of Jilin University were retrospectively analyzed. These patients were categorized into a training group (n=389) and a validation group (n=167). Variables significantly associated with prognosis were identified using univariate Cox regression and most minor absolute shrinkage and selection operator (LASSO) analysis. These independent predictors were incorporated into the nomogram to estimate extra-urinary recurrence-free survival (EURFS). Validation of the nomogram involved ROC curves, calibration plots, and decision curve analysis (DCA). Patients were stratified into two risk categories based on their nomogram scores to compare EURFS using the Kaplan-Meier method.ResultsEight predictors were identified: T-stage, N-stage, tumor grade, local and nerve invasion, preoperative hemoglobin level, neutrophil-to-lymphocyte ratio (NLR), and creatinine, all proving to be independent predictors of EUR. A nomogram was created based on these eight factors, and using the ROC, calibration curves, and DCA, good prediction results were shown in both the training and validation groups. The training and validation groups also showed reliable predictive performance. In particular, there was a significant difference in survival between the high-risk and low-risk groups (P&amp;lt;0.0001). We have also built a network calculator that calculates patient survival time. The URL is https://haowu24.shinyapps.io/dynnomapp.ConclusionA nomogram for predicting distant metastases in UTUC patients was successfully developed, and its accuracy, reliability, and clinical value were demonstrated. This new tool helps to improve the clinical management of UTUC cases.