The Accreditation Council for Graduate Medical Education 20-Year Trends in Diversity, Equity, and Inclusion in the United States: How Does Neurological Surgery Compare?

BACKGROUND: Within the current medical workforce, diversity is limited among surgical specialties. However, diversity allows physicians to provide culturally competent care. This paper discusses the trends in racial, ethnic, and gender representation within different surgical subspecialties with an emphasis on neurosurgery over a 20-year time frame. METHODS: A retrospective review of data collected by the Accreditation Council for Graduate Medical Education over the past twenty years, as reported in Journal of the American Medical Association, was conducted. Residents from 5 surgical specialties were evaluated based on gender, race, and ethnic identifications from 2002 to 2022. One-way analysis of variance was performed to compare the levels and retention rates of racial, ethnic, and gender diversity within these specialties. RESULTS: Analysis of resident demographics of the 5 surgical specialties reveals an overall trend of increasing diversity over the study period. Over the past 20 years, neurosurgery had an overall increase in Asian (+5.1%), Hispanic (+3.0%), and female (+11.4%) residents, with a decrease in White residents by 2.1% and Black residents by 1.1%. Among the surgical specialties analyzed, otolaryngology had the greatest overall increase in minority residents. Notably, there has been an overall increase in female residents across all 5 surgical specialties, with the highest in otolaryngology (+20.3%) which was significantly more than neurosurgery (P < 0.001). CONCLUSIONS: This chronological analysis spanning 20 years demonstrates that neurosurgery, like other specialties, has seen a growth in several racial and ethnic categories. Relative differences are notable in neurosurgery, including Black, Asian, Hispanic, and White ethnic categories, with growth in females, but at a significantly lesser pace than seen in otolaryngology and plastic surgery.

Do P-glycoprotein Medications Alter the Risk of Ventriculoperitoneal Shunt in Adults with Hydrocephalus?

Hydrocephalus is a disorder caused by excess fluid accumulation in the brain and results in brain damage with consequent cognitive and physical problems. This condition has no cure; the only treatment is brain surgery. Experimental data indicate that P-glycoprotein (P-gp) plays a crucial role in the pathogenesis of hydrocephalus due to its function in clearing macromolecules from the brain. Numerous medications frequently used are classified as P-gp inducers or inhibitors, and comprehending their effects may aid in attaining improved patient outcomes. Therefore, in this single-center retrospective study, we examined the risk of the need for ventriculoperitoneal shunt placement over 10 years among 4588 adult patients with hydrocephalus not exposed to any P-gp inhibitors/inducers or exclusively exposed to either P-gp inhibitors or inducers. Our analysis shows that patients exposed to P-gp inhibitors had a 3.2 times higher risk of requiring ventriculoperitoneal shunt surgery (P < .0001). In contrast, the relative risk was not significantly affected (P = .07) among those exposed to P-gp inducers. Our findings indicate the need for caution when prescribing P-gp inhibitors to patients with hydrocephalus. Additional studies using larger cohorts are required to confirm whether P-gp inducers in patients with hydrocephalus can mitigate the risk of ventriculoperitoneal shunt.

Insidious onset of spontaneous spinal epidural hematoma in immune thrombocytopenic purpura: a case-based review.

INTRODUCTION: Spontaneous spinal epidural hematoma (SSEH) can result from various etiologies with a variable degree of neurological deficits. Here, we describe a rare case of SEH secondary to immune thrombocytopenic purpura (ITP) in a child and review the literature of SSEH caused by ITP. CASE REPORT: A 9-year-old female who presented with rapid neurological decline, including bowel and bladder incontinence and paraparesis. A SSEH was observed extending from C2 to T6, causing a mass effect on the spinal cord. Her platelet count was only 7000/µL. Multidisciplinary care was established with neurosurgery, pediatric hematology, and pediatric surgery. The patient was managed emergently with splenectomy and surgical evacuation, with multilevel laminectomy and laminoplasty for evacuation of the hematoma. After a short course of rehabilitation, the patient regained all neurological function. CONCLUSION: We report the first case of cervicothoracic SSEH secondary to ITP in a child managed with emergent splenectomy and surgical evacuation with multilevel lamoplasty. We also described the methods of timely diagnosis, urgent management, and overall prognosis of patients with this condition.

Surgery for pediatric drug resistant epilepsy: a narrative review of its history, surgical implications, and treatment strategies.

Background and Objective: Drug-resistant epilepsy (DRE), also known as medically refractory epilepsy, is a disorder of high prevalence and negatively impacts a patients quality of life, neurodevelopment, and life expectancy. Pediatric epilepsy surgery has been conducted since the late 1800s, and randomized controlled trials have demonstrated the marked effectiveness of surgery on seizure reduction and the potential for cure. Despite the strong evidence for pediatric epilepsy surgery, there is also strong evidence describing its underutilization. The objective of this narrative review is to describe the history, strength, and limitations in the evidence of surgery for pediatric drug resistant epilepsy. Methods: This narrative review was conducted utilizing standard search engines to include the relevant articles on the topic of surgery for drug resistant epilepsy in children, with main keywords including surgery in pediatric epilepsy and drug-refractory epilepsy. Key Content and Findings: The first components describe the historical perspective of pediatric epilepsy surgery and the evidence that highlight the strengths and limitations of epilepsy surgery. We then highlight the importance of presurgical referral and evaluation, followed by a section detailing the surgical options for children with DRE. Lastly, we provide a perspective on the future of pediatric epilepsy surgery. Conclusions: Evidence supports the role for surgery in pediatric medically refractory epilepsy in seizure frequency reduction, improved curative rates, and improvements in neurodevelopment and quality of life.

Current state and future direction of quality improvement in pediatric neurosurgery: a survey of pediatric neurosurgeons.

OBJECTIVE: Quality improvement (QI) is a methodology used to implement sustainable, meaningful change to improve patient outcomes. Given the complex pathologies observed in pediatric neurosurgery, QI projects could potentially improve patient care. Overall, there is a need to characterize the degree of QI opportunities, training, and initiatives within the field of pediatric neurosurgery. Herein the authors aimed to define the current QI landscape in pediatric neurosurgery. METHODS: A cross-sectional survey was sent to all members of the American Association of Neurological Surgeons/Congress of Neurological Surgeons Joint Section on Pediatric Neurological Surgery via email. The responses were anonymized. Questions addressed several relatable QI topics including 1) training and participation in QI; 2) QI infrastructure; 3) QI program incentives; and 4) general opinions on the National Surgical Quality Improvement Program (NSQIP) database, various QI topics, and QI productivity. RESULTS: Responses were received from 129 participants (20% response rate). Most respondents practiced in an academic setting (59.8%) and at a free-standing pediatric hospital (65.4%). Participation in QI projects was high (81.7%), but only 23.8% of respondents had formal QI training. Only 36.5% of respondents had institutional requirements for QI work; the majority of those were only required to participate as a project team member. Nearly half of the respondents did not receive incentives or institutional support for QI. The majority agreed ("strongly" and "somewhat") that a QI course would be beneficial (75.5%), that QI projects should be considered for publication in neurosurgery journals (88.1%), and that there is a need for national quality metrics (81.4%). Over 88% have an interest in seeing QI project presentations at the annual Pediatric Joint Section meeting. Only 26.3% believed that the NSQIP was a useful QI guide. Respondents suggested further study of the following QI topics: overall rates of infection and their prevention, hydrocephalus, standardized treatment algorithms for common disorders, team communication, pediatric neurosurgery-specific database, access to care, and interprofessional education. CONCLUSIONS: Areas of opportunity include specialty-specific QI education, tactics for obtaining support to build the QI infrastructure, increased visibility of QI work within pediatric neurosurgery, and a review of available registries to provide readily available data relevant to this specialty.

Equity in neurosurgery: a worldwide survey of women neurosurgeons.

OBJECTIVE: The global neurosurgery workforce does not have a defined stance on gender equity. The authors sought to study and characterize the demographic features of the international women neurosurgery community and to better understand the perceptions and reflections of their neurosurgical careers. The objective was to define and characterize the workplace inequities faced by the global women neurosurgeon community. METHODS: A 58-item cross-sectional survey was distributed to the global women neurosurgery community. The survey was distributed via an online and mobile platform between October 2018 and December 2020. Responses were anonymized. The authors utilized chi-square analysis to differentiate variables (e.g., career satisfaction) between various groups (e.g., those based on academic position). The authors calculated 95% CIs to establish significance. RESULTS: Among 237 respondents, approximately 40% were between the ages of 26 and 35 years. Within their respective departments, 45% identified themselves as the only woman neurosurgeon in their practice. Forty-three percent stated that their department supported women neurosurgeons for leadership roles. Seventy-five percent of respondents were members of organized neurosurgery professional societies; of these, 38% had been involved in leadership roles. Almost 60% of respondents postponed their decision to get pregnant because of resident or work-related influences. CONCLUSIONS: This survey provides international feedback for characterizing and understanding the experiences of women neurosurgeons worldwide. Future research should aim to understand all neurosurgeons' experiences throughout the pipeline and career life cycle of neurosurgery in order to improve the field of neurosurgery.

Percutaneous embolization of sinus pericranii.

Sinus pericranii is a rare vascular anomaly involving a venous sinus that drains into a subgaleal collection of veins through an emissary vein. Data regarding presentation, management, and outcomes are limited to case reports and small case series. There are no technical videos detailing the technique for percutaneous embolization. We present the case of a child with an enlarging, symptomatic accessory type sinus pericranii with connection to the torcula, who underwent percutaneous embolization after unsuccessful transvenous embolization. Embolization was performed with 3.4 cc Onyx-34 under live fluoroscopy and serial control superior sagittal sinus venograms . Significant reduction of flow into the sinus pericranii was achieved and the lesion had nearly completely resolved at the 3-week follow-up. Percutaneous embolization of the sinus pericranii is a reasonable alternative to transvenous embolization, but additional data are needed to determine the optimal treatment. The technical details and practical considerations discussed here may help neurointerventionalists adopt this treatment. The video also includes references 1-4 which are relevant to this topic. neurintsurg;15/8/828/V1F1V1Video 1Case presentation and technique for percutaneous embolization of sinus pericranii.

Endoscopic Third Ventriculostomy and Cortical Biopsy in Patients With Normal Pressure Hydrocephalus.

Introduction Normal pressure hydrocephalus (NPH) has conventionally been treated by placement of a ventriculoperitoneal shunt. However, it can also be treated with a less invasive technique, an endoscopic third ventriculostomy (ETV). Unfortunately, there is a lack of evidence on the characteristics of NPH patients who are most likely to benefit from ETV. This study seeks to identify if patients at risk of dementia with NPH should be candidates for an ETV. Methodology Thirty-six NPH patients who underwent ETV at two institutions between July 2007 and December 2014 were pre-surgically assessed for various risk factors. At the time of ETV, a cortical biopsy was obtained and assessed for plaques consistent with dementia. Post-procedure, patients were followed and assessed for symptoms such as gait improvement, headache, memory problems, incontinence, and dementia. ETV success was defined as an improvement in gait. Results The mean age of patients with successful ETVs was 65.8 ± 6.0 versus 74.5 ± 7.0 for failed ETVs. Sixty-seven percent of patients with negative biopsies showed gait improvement by the final follow-up appointment as compared to only 33% of patients with positive biopsies (p>0.05). Younger age was correlated with successful ETV (p=.003). Memory disturbance (p<0.05) and incontinence (p<0.05) after surgery were both associated with a lack of gait improvement at the final follow-up. Conclusion Biopsy was not a significant predictor of ETV success; however, there was a correlation between younger age and ETV success. Additional studies are required to determine if there is a relationship between cortical biopsy findings and ETV success.

Embolization of a Dural Arteriovenous Fistula Using Transcranial Middle Meningeal Artery Access: 2-Dimensional Operative Video.

The transcranial approach for direct middle meningeal artery (MMA) access to embolize dural arteriovenous fistulas (dAVF) has been described, but limited information regarding the setup, equipment, and technique is available. We present the details of this hybrid approach in the setting of a ruptured Cognard grade IV tentorial dAVF (Video 1). The patient was an adult female who presented with nausea, vomiting, and dizziness and was found to have a cerebellar hemorrhage. Catheter angiography revealed a tentorial dAVF fed by bilateral middle meningeal, left posterior meningeal, and left occipital arteries. Attempted transarterial embolizations through each of these were unsuccessful. The left MMA was a primary source of supply, but distal microcatheter placement was not possible due to proximal tortuosity. Therefore transcranial MMA access distal to this tortuosity was pursued. The MMA was localized using roadmap angiography and a temporal craniectomy was completed over the artery. A 4-French sheath was placed, and super selective angiography was performed, demonstrating the fistula. A microcatheter was navigated to the fistula and it was embolized with Onyx. Postoperative angiogram demonstrated fistula occlusion. The patient remained at her neurologic baseline and was discharged home. Transcranial MMA access is a useful technique to overcome tortuosity that cannot be navigated with traditional endovascular techniques.

Pathophysiologic mechanisms and strategies for the treatment of post-hemorrhagic hydrocephalus of prematurity.

PURPOSE: Post-hemorrhagic hydrocephalus (PHH) of prematurity is a devastating pathology. Neurodevelopmental disabilities, including cognitive and motor deficits are very commonly seen among this population. Thus, there is interest to delineate the pathophysiology of PHH to uncover potential therapeutic targets. METHODS: We performed a systematic review of the current literature on pathophysiological mechanisms and progressive strategies in the management of post-hemorrhagic hydrocephalus of prematurity. Our literature search identified a total of 58 articles pertaining to the pathophysiology, risk factors and management of post-hemorrhagic hydrocephalus. RESULTS: Presence of high-grade germinal matrix hemorrhage does not always predict PHH and neither does obstruction of pathways seen on ultrasound or MRI scan. We also describe the management options for posthemorrhagic hydrocephalus, including surgical and non-surgical. CONCLUSION: We conclude that pathogenesis of post-hemorrhagic hydrocephalus of prematurity is clearly multifactorial and definitive prediction of who will eventually develop PHH continues to be elusive.

Multifocal spinal glioblastoma and leptomeningeal carcinomatosis in an elderly male with hydrocephalus and myelopathy.

BACKGROUND: Primary spinal glioblastoma multiforme with multifocal leptomeningeal enhancement is rarely diagnosed or documented. We describe a rare case of multifocal spinal isocitrate dehydrogenase (IDH) wild type glioblastoma with leptomeningeal carcinomatosis in an elderly male presenting with a chronic subdural hematoma, progressive myelopathy, and communicating hydrocephalus. CASE DESCRIPTION: A 77-year-old male with a medical history of an acoustic schwannoma, anterior cranial fossa meningioma, and immune thrombocytopenic purpura presented with right-sided weakness after repeated falls. Magnetic resonance imaging of the brain and spine demonstrated a left-sided subdural hematoma, leptomeningeal enhancement of the brain and skull base, ventricles, and the cranial nerves, and along with florid enhancement of the leptomeninges from the cervicomedullary junction to the cauda equina. Most pertinent was focal thickening of the leptomeninges at T1 and T6 with mass effect on the spinal cord. A T6 laminectomy with excisional biopsy of the lesion was planned and completed. Findings were significant for glioblastoma the World Health Organization Grade IV IDH 1 wild type of the thoracic spinal cord. Subsequently, his mental status declined, and he developed progressive hydrocephalus which required cerebrospinal fluid diversion. Unfortunately, the patient had minimal improvement in his neurological exam and unfortunately died 2 months later. CONCLUSION: In a review of the limited literature describing similar cases of primary spinal glioblastoma, the prognosis of this aggressive tumor remains unfavorable, despite aggressive treatment options. The purpose of this report is to increase awareness of this rare condition as a potential differential diagnosis in patients presenting with multifocal invasive spinal lesions.

Effects of depression and exercise on health-related quality of life in patients with Parkinson's disease.

OBJECTIVES: There is limited literature describing the effect exercise may have on depression and an individual's health-related quality of life (HRQoL) in Parkinson's Disease (PD). We aim to quantify this effect. METHODS: A cross-sectional questionnaire was administered to 60 PD subjects. The Parkinson's Disease Questionnaire-39 (PDQ-39) summary index and the Geriatric Depression Scale-30 were used to quantify HRQoL and depression, respectively. Data were obtained on exercise habits. ANOVA and multivariate linear regression analysis were used to calculate mean differences in HRQoL. RESULTS: Depression was consistently related to HRQoL (p < 0.05). Of those who exercised as an adult before PD diagnosis, 49.02% (n = 25) reported depression as compared to 88.89% (n = 8) of those who did not report adult exercise (p = 0.03). Those who exercised frequently as an adult prior to PD diagnosis had a better PDQ-39 Cognitive Index (p = 0.03). Those who were not depressed and were currently exercising had a significantly higher HRQoL than those who were depressed and did not exercise (p < 0.01). DISCUSSION: Exercising and depression may interact to affect HRQoL. Thus, coordination of mental health evaluation and exercise regimens in persons with PD may improve HRQoL.

Coil and Onyx embolization of a torcular herophili dural arteriovenous fistula in a full-term neonate with advanced heart failure using a transumbilical approach.

Neonatal dural arteriovenous fistulas (DAVFs) are rare, but if left untreated will advance to life-threatening neurological and cardiovascular compromise. Endovascular treatment is the preferred treatment modality for DAVFs. The goal of endovascular therapy is to obliterate feeding vasculature and prevent secondary complications. Endovascular access can be difficult to obtain in a neonate. The authors present the case of a full-term, normal birth weight neonate with severe congestive heart failure secondary to a congenital DAVF of the torcular herophili that was successfully treated with transumbilical arterial coil embolization and a liquid embolic agent.

Role of microglia in fungal infections of the central nervous system.

Most fungi are capable of disseminating into the central nervous system (CNS) commonly being observed in immunocompromised hosts. Microglia play a critical role in responding to these infections regulating inflammatory processes proficient at controlling CNS colonization by these eukaryotic microorganisms. Nonetheless, it is this inflammatory state that paradoxically yields cerebral mycotic meningoencephalitis and abscess formation. As peripheral macrophages and fungi have been investigated aiding our understanding of peripheral disease, ascertaining the key interactions between fungi and microglia may uncover greater abilities to treat invasive fungal infections of the brain. Here, we present the current knowledge of microglial physiology. Due to the existing literature, we have described to greater extent the opportunistic mycotic interactions with these surveillance cells of the CNS, highlighting the need for greater efforts to study other cerebral fungal infections such as those caused by geographically restricted dimorphic and rare fungi.