To assess the safety of laparoscopy in patients with CSF catheters draining distally into the abdomen.

PURPOSE: This study evaluates the safety of laparoscopic procedures in patients with cerebrospinal fluid (CSF) catheters draining distally into the abdomen. METHODS: A systematic search across PubMed, Scopus, and Ovid databases using pertinent keywords yielded 47 relevant papers, encompassing 197 cases, for analysis. RESULTS: In the pediatric cohort (n = 129), male (49.6%) and female (34.1%) cases were reported, while gender remained unspecified in 16.3%. Shunt indications included unspecified (126 cases) and Meningomyelocele (3 cases). Laparoscopic procedures encompassed gastric (72.1%), urologic (21.7%), and other (6.2%) indications. Peri-operative shunt management included subcostal incision and clamping (1), ICP monitoring and drainage (2), and distal shunt flow confirmation (1). The prevalent complication was mechanical obstruction (10.1%), followed by pseudocyst formation (1.5%) and infection (2.3%). In the adult cohort (n = 61), males (60.6%) and females (39.3%) with a median age of 55 years were observed. Management strategies encompassed sponge packing and mobilization (11), distal shunt flow confirmation (2), shunt clamping (3), Transcranial Doppler monitoring (2), and no manipulation (30). Shunt infection emerged as the primary complication (2). Overall, 24 patients encountered VP shunt-related complications post-laparoscopy. CONCLUSION: This study underscores the safety of laparoscopic interventions in patients with ventriculoperitoneal or lumboperitoneal shunts when facilitated by interdisciplinary cooperation. A meticulous preoperative assessment for shunt track localization, intraoperative visualization of shunt tip with CSF flow, vigilant perioperative anesthetic monitoring, and shunt dysfunction surveillance are crucial for favorable outcomes in laparoscopic procedures for these patients.

Trends in research grant applications and outcomes among medical students in the United Kingdom: a national self-reported cross-sectional survey.

BACKGROUND: Research funding disparities contribute to clinical academic workforce inequalities. Hence, our study explores the association between student demographics and research grant application rates and outcomes among UK medical students. METHODS: This is a national multicentre cross-sectional survey of UK medical students in the 2020-21 academic year. Multiple zero-inflated negative binomial regression and generalized linear model (binomial distribution; logit link) were utilized to investigate the association between student demographics, number of grant applications submitted, and successful grant applications (yes or no). P-values less than a Bonferroni-corrected significance level of 0.05/36 = 0.0014 were considered to be statistically significant. RESULTS: A total of 1528 students participated from 36 medical schools. One hundred fifty-one respondents (9.9%) had applied for research grants. Black students submitted applications 2.90 times more often than white students [Incident rate ratio (IRR): 2.90, 95% confidence interval (CI): 1.37-6.16], with no ethnic disparity in the odds of successful applications. Gender did not influence application rates significantly (P = .248), but women were 4.61 times more likely to secure a grant than men [odds ratio: 4.61, 95% CI: 2.04-10.4]. Being a PubMed-indexed author was associated with increased grant application submission rates [IRR: 3.61, 95% CI: 2.20- 5.92] while conducting more research was associated with greater odds of securing a grant [odds ratio: 1.42, 95% CI: 1.17- 1.73]. CONCLUSION: Although black students submitted more applications, ethnicity did not influence success rates. Gender did not influence application rates, but women were more successful. These findings underscore the need for strategies supporting women and underrepresented students for continued academic achievement after graduation. KEY MESSAGES: What is already known on this topic Research funding for post-PhD researchers is believed to be a major driver of gender and ethnic inequalities in the clinical academic workforce.Students who receive research grants are more likely to receive postgraduate research grants.What this study adds Black students applied for more research grants than white students, but there were no ethnic differences in the odds of securing a grant.There were no gender differences in the research grant application rates. However, female students had greater odds of securing research grants compared to male students.How this study might affect research, practice or policy Medical schools should incorporate grant writing skills into the undergraduate research curriculum. Also, to sustain women's academic success post medical school, the NIHR and affiliates should provide research award extensions and childcare support for women when required.

Predictors of self-reported research engagement and academic-career interest amongst medical students in the United Kingdom: a national cross-sectional survey.

BACKGROUND: We hypothesised that the gender/ethnic disparities and reductions in the UK academic-clinician workforce stem from research experience in medical school. This study investigated the factors influencing research engagement and academic-career interests among UK medical students. METHODS: Using a 42-item online questionnaire, a national multicentre cross-sectional survey of UK medical students was conducted over 9 weeks in the 2020/21 academic year. Multiple binary logistic and zero-inflated negative binomial regressions were used to evaluate associations between the predictor variables and research engagement (yes/no), number of research projects conducted, and academic-career interest (yes/no). P < 0.05 was considered statistically significant. RESULTS: In total, 1573 students participated from 36 medical schools. No ethnic/gender differences in research engagement were observed. However, compared to men, women had a 31% decrease in the odds of being interested in an academic-clinician career [odds ratio (OR): 0.69; 95% confidence interval (CI): 0.52, 0.92]. Positive predictors of interest in academia were being a PubMed-indexed author (OR: 2.19; 95% CI: 1.38, 3.47) and having at least one national/international presentation (OR: 1.40; 95% CI: 1.04, 1.88). Career progression was the primary motivating factor (67.1%) for pursuing research, whereas limited awareness of opportunities (68.0%) and time constraints (67.5%) were the most common barriers. CONCLUSION: There were no ethnic differences in research engagement or academic-career intent. Although there were no gender differences in research engagement, female students were less likely to be interested in an academic career. This could be tackled by providing targeted opportunities to increase research productivity and self-efficacy in medical schools. Key messages: What is already known on this topic: There has been a decline in the number of academic clinicians, with a disproportionate gender and ethnic representation in the academic workforce. Engaging medical students in research activities during their medical training could mitigate the declining number of academic clinicians. Differential attainment occurs in medical school and persists after graduation. What this study adds: Although there were no gender/ethnic differences in research engagement amongst UK medical students, our study suggests that female students were less likely to be interested in pursuing an academic career. Time constraints, a lack of awareness of opportunities, and difficulty in finding research supervisors/mentors were the most common barriers to research engagement, whereas PubMed-indexed authorship was the strongest positive predictor of interest in an academic career. How this study might affect research, practice, or policy: Medical schools should facilitate the selection of good-quality research mentors that would provide adequate support to ensure that their students' works are published in peer-reviewed journals. Medical schools should employ local research officers to increase students' awareness of research opportunities.

Predictors of self-reported research productivity amongst medical students in the United Kingdom: a national cross-sectional survey.

BACKGROUND: The number of academic clinicians in the UK is declining and there are demographic inequalities in the clinical-academic workforce. Increased research productivity by medical students is believed to reduce future attrition in the clinical-academic workforce. Thus, this study investigated the association between student demographics and research productivity amongst UK medical students. METHODS: This is a national multicentre cross-sectional study of UK medical students in the 2020/21 academic year. We appointed one student representative per medical school, and they disseminated a 42-item online questionnaire over nine weeks, through departmental emails and social media advertisements. The outcome measures were: (i) publications (yes/no) (ii) number of publications (iii) number of first-authored publications (iv) abstract presentation (yes/no). We utilised multiple logistic and zero-inflated Poisson regression analyses to test for associations between the outcome measures and predictor variables at a 5% significance level. RESULTS: There are 41 medical schools in the UK. We received 1573 responses from 36 UK medical schools. We failed to recruit student representatives from three newly formed medical schools, whilst two medical schools prohibited us from sending the survey to their students. Women had lower odds of having a publication (OR: 0.53, 95% CI: 0.33-0.85) and on average had fewer first-author publications than men (IRR: 0.57, 95% CI: 0.37-0.89). Compared to white students, mixed-ethnicity students had greater odds of having a publication (OR: 3.06, 95% CI: 1.67-5.59), an abstract presentation (OR: 2.12, 95% CI: 1.37-3.26), and on average had a greater number of publications (IRR: 1.87, 95% CI: 1.02-3.43). On average, students who attended independent UK secondary schools had a higher rate of first-author publications compared to those that attended state secondary schools (IRR: 1.97, 95% CI: 1.23-3.15). CONCLUSION: Our data suggest that there are gender, ethnic and socioeconomic inequalities in research productivity among UK medical students. To tackle this, and potentially improve diversity in clinical academia, we recommend that medical schools should facilitate targeted high quality research mentorship, funding and training, especially for under-represented-in-medicine students.

Predictors of self-reported research self-efficacy and perception of research amongst medical students in the United Kingdom: a national cross-sectional survey.

PURPOSE: There has been a decline in the number of academic clinicians in the UK, and there are ethnic/gender disparities in the academic workforce. Higher research self-efficacy (RSE) and a positive perception of research (PoR) amongst students are associated with a higher motivation to engage in academic medicine. Hence, this study aimed to determine the factors that influence RSE and PoR amongst UK medical students. METHODS: This is a multicentre cross-sectional survey of medical students in 36 UK medical schools in the 2020/21 academic year. Multiple linear regression was used to investigate the association between students' demographics and RSE/PoR. P-values less than a Bonferroni-corrected significance level of .05/28 = .0018 were considered statistically significant. RESULTS: In total, 1573 individuals participated from 36 medical schools. There were no ethnic differences in PoR or RSE scores. Although there were no gender differences in PoR, female students had lower RSE scores than male students (adjusted ß = -1.75; 95% CI: -2.62, -0.89). Research experience before medical school (adjusted ß = 3.02; 95% CI: 2.11, 3.93), being in the clinical training phase (adjusted ß = 1.99; 95% CI: 1.09, 2.90), and completing a degree before medical school (adjusted ß = 3.66; 95% CI: 2.23, 5.09) were associated with higher RSE. CONCLUSION: There were no associations between the predictor variables and PoR. Female students had lower self-reported RSE scores. Future studies should investigate the role of targeted research mentorship in improving RSE amongst female medical students.

Preoperative lymphocyte percentage and neutrophil-lymphocyte ratio are useful predictors of 30-day postoperative complications after lumbar fusion.

Background: Lymphocyte percentage/count, platelet-lymphocyte ratio (PLR), and neutrophil-lymphocyte ratio (NLR) have shown prognostic significance in patients with cancer, stroke, and following cardiac surgery. However, the utility of these blood parameters for assessing the 30-day postoperative risk for lumbar fusion complications has not been established. Methods: In this single-center-single-surgeon retrospective series, 77 consecutive patients underwent one- or two-level lumbar fusion. Lymphocyte percentage/count, PLR, and NLR were investigated as predictors of 30-day postoperative complications. Results: Ten of 77 patients had postoperative complications. A unit increase in NLR and lymphocyte percentage was significantly associated with a 23% increase and 7% decrease, respectively, in the odds of a complication occurring. Preoperative NLR ≥ 2.32 and lymphocyte percentage ≤ 29.5% significantly discriminated between the "complication" and "no-complication" groups. Conclusion: Patients with a preoperative lymphocyte percentage of ≤29.5% and/or NLR ≥2.32 should be closely monitored as high-risk groups susceptible to 30-day postoperative complications after lumbar fusion.

Does Preoperative Neutrophil-Lymphocyte Ratio Predict Patient-Reported Pain and Functional Outcomes at 12 Months After Lumbar Fusion?

BACKGROUND: Preoperative neutrophil-lymphocyte ratio (NLR) has been described in various fields to predict pain outcomes, but its prognostic utility for pain/functional outcomes after spine surgery is unclear. OBJECTIVE: To determine the relationship between preoperative NLR and pain/functional outcomes at 12 months after lumbar fusion. METHODS: We performed a single-center retrospective study of 53 patients who underwent lumbar fusion and collected demographic data including age, sex, body mass index, smoking status, spinal levels operated, and preoperative NLR. Visual analog scale (VAS) for back and leg pain and Oswestry Disability Index (ODI) at baseline and 12 months after lumbar fusion were also collected. The outcome measures were the occurrence of a clinically important improvement in VAS and ODI scores at 12 months. Binary logistic regression was used to estimate the associations of demographic factors and NLR with improvement in VAS and ODI scores. A P value of <0.05 was considered statistically significant. RESULTS: There were no statistically significant associations between preoperative NLR and improvement in VAS or ODI scores. A unit increase in baseline VAS back pain score was associated with a 56% increase in the odds of improvement in back pain (OR: 1.56, 95% CI: 1.04-2.35, P = 0.03). Compared to male patients, female patients had 12 times greater odds of an improvement in leg pain (OR: 12.0, 95% CI: 1.3-110, P = 0.03). CONCLUSION: Preoperative NLR does not predict patient-reported pain/functional outcomes at 12 months after lumbar fusion. Large-scale prospective multicenter studies are warranted to confirm our findings.

Biomarkers for differentiating grade II meningiomas from grade I: a systematic review.

INTRODUCTION: There are a number of prognostic markers (methylation, CDKN2A/B) described to be useful for the stratification of meningiomas. However, there are currently no clinically validated biomarkers for the preoperative prediction of meningioma grade, which is determined by the histological analysis of tissue obtained from surgery. Accurate preoperative biomarkers would inform the pre-surgical assessment of these tumours, their grade and prognosis and refine the decision-making process for treatment. This review is focused on the more controversial grade II tumours, where debate still surrounds the need for adjuvant therapy, repeat surgery and frequency of follow up. METHODS: We evaluated current literature for potential grade II meningioma clinical biomarkers, focusing on radiological, biochemical (blood assays) and immunohistochemical markers for diagnosis and prognosis, and how they can be used to differentiate them from grade I meningiomas using the post-2016 WHO classification. To do this, we conducted a PUBMED, SCOPUS, OVID SP, SciELO, and INFORMA search using the keywords; 'biomarker', 'diagnosis', 'atypical', 'meningioma', 'prognosis', 'grade I', 'grade 1', 'grade II' and 'grade 2'. RESULTS: We identified 1779 papers, 20 of which were eligible for systematic review according to the defined inclusion and exclusion criteria. From the review, we identified radiological characteristics (irregular tumour shape, tumour growth rate faster than 3cm3/year, high peri-tumoural blood flow), blood markers (low serum TIMP1/2, high serum HER2, high plasma Fibulin-2) and histological markers (low H3K27me3, low SMARCE1, low AKAP12, high ARIDB4) that may aid in differentiating grade II from grade I meningiomas. CONCLUSION: Being able to predict meningioma grade at presentation using the radiological and blood markers described may influence management as the likely grade II tumours will be followed up or treated more aggressively, while the histological markers may prognosticate progression or post-treatment recurrence. This to an extent offers a more personalised treatment approach for patients.

Fibulin-2: A Novel Biomarker for Differentiating Grade II from Grade I Meningiomas.

There is an unmet need for the identification of biomarkers to aid in the diagnosis, clinical management, prognosis and follow-up of meningiomas. There is currently no consensus on the optimum management of WHO grade II meningiomas. In this study, we identified the calcium binding extracellular matrix glycoprotein, Fibulin-2, via mass-spectrometry-based proteomics, assessed its expression in grade I and II meningiomas and explored its potential as a grade II biomarker. A total of 87 grade I and 91 grade II different meningioma cells, tissue and plasma samples were used for the various experimental techniques employed to assess Fibulin-2 expression. The tumours were reviewed and classified according to the 2016 edition of the Classification of the Tumours of the central nervous system (CNS). Mass spectrometry proteomic analysis identified Fibulin-2 as a differentially expressed protein between grade I and II meningioma cell cultures. Fibulin-2 levels were further evaluated in meningioma cells using Western blotting and Real-time Quantitative Polymerase Chain Reaction (RT-qPCR); in meningioma tissues via immunohistochemistry and RT-qPCR; and in plasma via Enzyme-Linked Immunosorbent Assay (ELISA). Proteomic analyses (p < 0.05), Western blotting (p < 0.05) and RT-qPCR (p < 0.01) confirmed significantly higher Fibulin-2 (FBLN2) expression levels in grade II meningiomas compared to grade I. Fibulin-2 blood plasma levels were also significantly higher in grade II meningioma patients compared to grade I patients. This study suggests that elevated Fibulin-2 might be a novel grade II meningioma biomarker, when differentiating them from the grade I tumours. The trend of Fibulin-2 expression observed in plasma may serve as a useful non-invasive biomarker.

Traumatic pneumorrhachis: systematic review and an illustrative case.

Pneumorrhachis (PR) refers to free air in the spinal canal. We aim to describe a case report and conduct a systematic review focused on the clinical presentation, diagnosis, and management of traumatic PR. We conducted a language-restricted PubMed, SciELO, Scopus, and Ovid database search for traumatic PR cases published till June 2019. Categorical variables were assessed by Fisher's exact test. In addition to our reported index case, there were 82 articles (96 individual cases) eligible for meta-analysis according to our inclusion/exclusion criteria. Eighty per cent of patients had blunt trauma, while 17% had penetrating injuries. Thirty-four per cent of cases were extradural PR, 21% intradural PR, and unreported PR type in 43%. Nine per cent of patients presented with symptoms directly attributed to PR: sensory radiculopathy (2%), motor radiculopathy (1%), and myelopathy (6%). CT had a 100% sensitivity for diagnosing PR, MRI 60%, and plain radiograph 48%. Concurrent injuries reported include pneumocephalus (42%), pneumothorax (36%), spine fracture (27%), skull fracture (27%), pneumomediastinum (24%), and cerebrospinal fluid leak (14%). PR was managed conservatively in every case, with spontaneous resolution in 96% on follow-up (median = 10 days). Prophylactic antibiotics for meningitis were given in 13% PR cases, but there was no association with the incidence of meningitis (overall incidence: 3%; prophylaxis group (0%) vs non-prophylaxis group (4%) (p = 1)). Occasionally, traumatic PR may present with radiculopathy or myelopathy. Traumatic PR is almost always associated with further air distributions and/or underlying injuries. There is insufficient evidence to support the use of prophylactic antibiotic in preventing meningitis in traumatic PR patients.

A Rapid Robust Method for Subgrouping Non-NF2 Meningiomas According to Genotype and Detection of Lower Levels of M2 Macrophages in AKT1 E17K Mutated Tumours.

The majority of meningiomas are grade I, but some grade I tumours are clinically more aggressive. Recent advances in the genetic study of meningiomas has allowed investigation into the influence of genetics on the tumour microenvironment, which is important for tumorigenesis. We have established that the endpoint genotyping method Kompetitive Allele Specific PCR (KASP™) is a fast, reliable method for the screening of meningioma samples into different non-NF2 mutational groups using a standard real-time PCR instrument. This genotyping method and four-colour flow cytometry has enabled us to assess the variability in the largest immune cell infiltrate population, M2 macrophages (CD45+HLA-DR+CD14+CD163+) in 42 meningioma samples, and to suggest that underlying genetics is relevant. Further immunohistochemistry analysis comparing AKT1 E17K mutants to WHO grade I NF2-negative samples showed significantly lower levels of CD163-positive activated M2 macrophages in meningiomas with mutated AKT1 E17K, signifying a more immunosuppressive tumour microenvironment in NF2 meningiomas. Our data suggested that underlying tumour genetics play a part in the development of the immune composition of the tumour microenvironment. Stratifying meningiomas by mutational status and correlating this with their cellular composition will aid in the development of new immunotherapies for patients.

Scalp Cirsoid Aneurysms: Case Illustration and Systematic Review of Literature.

BACKGROUND: Scalp cirsoid aneurysms are rare subcutaneous arteriovenous fistulae affecting the scalp. They can be easily misdiagnosed and mistreated. OBJECTIVE: To review reported cases of scalp cirsoid aneurysms for their incidence, etiology, clinical presentation, treatment, and outcomes using an illustrative case. METHODS: We conducted a PUBMED, SCOPUS, OVID SP, SciELO, and INFORMA search using the keywords; "cirsoid," "aneurysm," "arteriovenous," "malformation," "scalp," "vascular," and "fistula." We identified 74 pertinent papers, reporting 242 cases in addition to our reported index case. RESULTS: Median age at presentation was 25 yr (range 1-72 yr); male to female ratio was 2.5:1. The most common symptoms were a pulsatile mass (94% of patients), headaches (25%), and tinnitus (20%). The median duration of symptoms was 3 yr (6 d to 31 yr), with 60.2% occurring spontaneously, 32.23% traumatic, and the rest iatrogenic. A total of 58.5% of cases were managed with surgical excision only, 21.6% with endovascular embolization only, and 14.5% with a combination of both methods. The complication rate observed in the endovascular embolization treatment cohort (55.8%) was significantly higher than that observed in the surgical excision only cohort (9.9%) (P < .00001) and in the combined therapy cohort (0%) (P < .00001). There is a low recurrence rate after treatment irrespective of modality: surgical excision only (6.3%), endovascular embolization only (8.3%), and combined therapy (0%). CONCLUSION: Scalp cirsoid aneurysms are associated with good prognoses when recognized and managed appropriately. We suggest combining surgery with endovascular embolization as the optimum treatment modality.

A review of spontaneous intracranial extradural hematoma in sickle-cell disease.

Sickle-cell disease is common among patients of Afro-Caribbean origin. Though it can precipitate neurological conditions, it only rarely causes neurosurgical problems, with very few reported cases. We describe the case of a 7-year-old girl with a background of sickle-cell disease (SCD) brought into an acute neurosurgical unit in extremis, signs of a raised ICP, and with no history of recent trauma. Following further investigations, an acute drop in the hemoglobin and hematocrit levels were noted, with the cause of her presentation being attributed to a sickling crisis causing skull convexity infarction and resulting in spontaneous bilateral extradural hematomas requiring emergency evacuation. We review the current literature and propose the pathophysiological mechanism behind this phenomenon.

Malignant transformation in craniopharyngiomas.

BACKGROUND: Craniopharyngiomas are successfully managed with surgery and/or adjuvant chemoradiotherapy but have been documented to undergo malignant transformation (MT), albeit very rarely, with only 23 reported cases. The exact cause and pathogenesis of this MT are unknown, although the literature has suggested a possible correlation with radiotherapy. OBJECTIVE: To review the reported cases of malignancy, in particular looking at the incidence, tumor characteristics, previous treatment modalities, and median survival. METHODS: We conducted a PUBMED, SCOPUS, OVID SP, and INFORMA search with a combination of key words: craniopharyngioma, malignancy, transformation, neoplasm, radiation therapy, and anaplastic. We identified 23 cases relevant to our study. RESULTS: Median age at the time of diagnosis of malignant craniopharyngiomas was 31 years (range, 10-66 years); 52.6% of the patients were female. Histologically, the most common tumor types were squamous cell carcinoma (80.96%), with adamantinomatous cell type being the most common morphology (89.47%). We found that 21.7% of the cases were diagnosed as malignant craniopharyngioma at first biopsy. Of the rest, the median time from initial benign diagnosis to MT was 8.5 years (range, 3-55 years). Median overall survival after MT was 6 months (range, 2 weeks-5 years). Using the Spearman rank correlation, we found no correlation between the use of radiation therapy (correlation coefficient, -0.25; P < .05) or its dosage (correlation coefficient, -0.26; P < .05) and MT. CONCLUSION: Malignant craniopharyngiomas are rare and are associated with a poor prognosis. MTs occur years after the initial benign craniopharyngioma diagnosis and are associated with multiple benign craniopharyngioma recurrence. Results also show that, contrary to widespread belief, there is a poor correlation between radiotherapy and MT.

Patient and staff satisfaction with 'day of admission' elective surgery.

OBJECTIVES: To evaluate patient and staff satisfaction with day of admission surgery in a neurosurgical unit and its effect on theatre start times. METHODS AND DESIGN: Patients were admitted to a Neurosciences admission lounge (NAL) for neurosurgery on the morning of their operation if deemed appropriate by their neurosurgical consultant. All patients in the NAL were asked to complete patient satisfaction questionnaires. Staff members involved in the care of these patients also completed a satisfaction questionnaire. Theatre start times were compared with those whose patients had been admitted prior to the day of surgery. 378 patients admitted on the day of surgery, 16 doctors (5 anaesthetists, 7 neurosurgeons and 4 neuro high dependency unit, HDU doctors) and 5 nurses. Patients completed an anonymised emotional mapping patient satisfaction questionnaire, and short interviews were carried out with staff members. Theatre start times were obtained retrospectively from the theatre database for lists starting with patients admitted on the day of surgery, and lists starting with patients admitted prior to the day of surgery. RESULTS: 83% of patients felt positive on arrival in the NAL and 88% felt positive on being seen by the doctors and nurses prior to surgery. Overall 79% of patients gave positive responses throughout their patient pathway. 90% of staff were positive about day of admission surgery and all staff members were satisfied that there were no negative effects on surgical outcome. Theatre start time was on average 27 minutes earlier in patients admitted on the day of surgery. CONCLUSIONS: Neurosurgical patients, appropriately selected, can be admitted on the day of surgery with high staff and patient satisfaction and without delaying theatre start times.