Combined rapid sequence MRI protocol and skull radiography as an alternative to head CT in the evaluation of abusive head trauma in children: a pilot study.

The aim of our pilot study was to compare the performance of the RS-MRI protocol combined with skull radiography versus CT for the detection of skull fractures, scalp hematomas, and intracranial hemorrhage in patients with abusive head trauma (AHT). Additionally, our study aimed to determine whether the presence of scalp hematoma predicts concurrent skull fracture. We conducted a pilot study through retrospective chart review of 24 patients between ages 0 and 15 months who experienced AHT and who received CT, MRI, and skull radiography between May 2020 and August 2021. Two blinded board certified neuroradiologists reviewed the skull radiographs alongside the rapid trauma MRI. Their impressions were documented and compared with findings derived from CT. Combination imaging detected ten out of the 12 skull fractures noted on CT (sensitivity 83.3%, specificity 100%, p=0.48). RS-MRI detected 15 out of the 16 intracranial hemorrhages detected by CT (sensitivity 93.75%, p >0.9). When scalp hematoma was detected on RS-MRI, nine out of the 12 had associated skull fractures when reviewed by radiologist 1 (sensitivity 75%, specificity 100%, p=0.22), and seven out of the 12 had associated skull fractures when reviewed by radiologist 2 (sensitivity 58%, specificity 92%, p=0.25). In pediatric patients with suspected AHT, we found that RS-MRI combined with skull radiographs was not significantly different than CT for the detection of skull fractures, scalp hematomas, and intracranial hemorrhage. This combination has the potential to replace the use of CT as a screening tool for abusive head trauma, while avoiding the risks of sedation often required for routine MRI.

Parenting and Childbearing in Neurosurgical Residency: Perspectives from the United States and Canada.

BACKGROUND: Despite growing interest in family planning alongside surgical training, significant barriers exist including time constraints, stigma, and lack of paid leave and formal policies. We currently lack a deep understanding of the challenges residents face and how practice cultures may prohibit successful policy enactment. OBJECTIVE: To investigate residents' perspectives surrounding parenting and childbearing during neurosurgical residency in the United States and Canada. METHODS: A cross-sectional, qualitative study methodology was used, including focus groups with neurosurgical residents. Purposive sampling was employed to capture a broad range of perspectives including stage of training, geographical location, and gender. Data collection and analysis occurred in parallel, using a thematic analysis approach. Data collection continued until no new themes relating to the research questions were identified. RESULTS: Notable challenges included lack of formal family leave policies, time constraints, insufficient clinical human resources, physical health concerns, lack of lactation accommodations, and lack of mentorship. A subset of barriers were uncovered that stem specifically from workplace cultures, including gender norms, difficulty in asking for help, concerns for inconveniencing others, and pressures to time parental leave during research blocks. Several positive changes were identified including growing awareness and female representation, and benefits of the dual surgeon-parent identity. CONCLUSION: While parenting during neurosurgery residency is becoming increasingly common, significant practical and cultural barriers persist including a marked absence of formal policies. Culture shifts are essential in ensuring opportunities for life outside of medicine for all residents, irrespective of family status.

Relationship between Anterior Pituitary Volume and IGF-1 Serum Levels in Soldiers with Mild Traumatic Brain Injury History.

PURPOSE: A high mild traumatic brain injury (mTBI) incidence rate exists in military and sport. Hypopituitarism is an mTBI sequela; however, few studies have examined this phenomenon in those with an mTBI history. This cross-sectional study of Special Operations Forces combat soldiers aimed 1) to relate anterior pituitary gland volumes (actual and normalized) to insulin-like growth factor 1 (IGF-1) concentrations, 2) to examine the effect of mTBI history on anterior pituitary gland volumes (actual and normalized) and IGF-1 concentrations, and 3) to measure the odds of demonstrating lower anterior pituitary gland volumes (actual and normalized) or IGF-1 concentrations if self-reporting mTBI history. METHODS: Anterior pituitary gland volumes were manually segmented from T1-weighted 3D brain MRI sequences; IGF-1 serum concentrations were quantified using commercial enzyme-linked immunosorbent assays. Correlations and linear regression were used to determine the association between IGF-1 serum concentration and anterior pituitary gland volume (n = 74). Independent samples t-tests were used to compare outcomes between mTBI groups and logistic regression models were fit to test the odds of demonstrating IGF-1 concentration or anterior pituitary volume less than sample median based on mTBI group (n = 54). RESULTS: A significant linear relationship between the subjects' anterior pituitary gland volumes and IGF-1 concentrations (r72 = 0.35, P = 0.002) was observed. Soldiers with mTBI history had lower IGF-1 concentrations (P < 0.001) and lower anterior pituitary gland volumes (P = 0.037) and were at greater odds for IGF-1 serum concentrations less than the sample median (odds ratio = 5.73; 95% confidence interval = 1.77-18.55). CONCLUSIONS: Anterior pituitary gland volume was associated with IGF-1 serum concentrations. Mild TBI history may be adversely associated with anterior pituitary gland volumes and IGF-1 concentrations. Longitudinal IGF-1 and anterior pituitary gland monitoring may be indicated in those who report one or more mTBI.

Sociodemographic disparities as a determinant of fetal versus postnatal surgical myelomeningocele repair.

OBJECTIVE: Relatively few women undergo open maternal-fetal surgery (OMFS) for myelomeningocele (MMC) despite the potential to reverse hindbrain herniation, reduce the rate of infant shunt-dependent hydrocephalus, and improve ambulation. These benefits have the potential to significantly reduce morbidity and lifetime medical care. In this study, the authors examined demographics and socioeconomic variables of women who were offered and opted for OMFS for MMC versus postnatal MMC surgery, with the purpose of identifying variables driving the disparity between these two patient populations. METHODS: This was a retrospective case-control study of patients who underwent evaluation for OMFS for MMC at a single academic hospital from 2015 to 2020. Race/ethnicity, primary insurance type, zip code, and BMI were collected and compared by treatment received and eligibility status for OMFS. Prevalence odds ratios were used to test for associations between each independent variable and the two outcomes. Logistical regression models were utilized to determine significant predictors of undergoing OMFS and being eligible for OMFS. RESULTS: Of 96 women, 36 underwent OMFS for MMC, 40 received postnatal repair, and 20 either terminated the pregnancy or received care at another institution. Overall, 66 (68.8%) women were White, 14 (14.6%) were Black, 13 (13.5%) were Hispanic/Latinx, 1 (1.0%) was Asian, and 2 (2.1%) identified as other or multiple races. Among women who underwent OMFS for MMC, 27 (75.0%) were White, 2 (5.6%) were Black, 4 (11.1%) were Hispanic/Latinx, 1 (2.8%) was Asian, and 2 (5.6%) identified as other or multiple races. Having private insurance or TRICARE was associated with higher odds of being eligible for OMFS compared with women who were uninsured or had Medicaid when accounting for race and income (OR 3.87, 95% CI 1.51-9.59). CONCLUSIONS: The population evaluated and treated for MMC was homogeneous and insufficiently representative of the population affected by the disease. This finding raises concern, as it suggests underlying barriers to formal evaluation for OMFS for MMC. Insurance status and BMI have a significant association between the access to and election of OMFS, revealing socioeconomic disparities. This was the first study to explore sociodemographic characteristics of patient populations who may be at risk for limited access to highly specialized fetal surgical care.

Pentobarbital Coma Use in a Pregnant Patient With Refractory Intracranial Hypertension: A Case Report.

OBJECTIVE: Intracranial hypertension is a life-threatening condition that requires emergent diagnosis and management. Although pentobarbital coma for refractory intracranial hypertension has been studied in the general population, this study is the first reported case of pentobarbital coma use in a pregnant patient. METHODS: We performed a retrospective chart review of a pregnant patient with refractory intracranial hypertension and reviewed the current literature on the role of pentobarbital coma. RESULTS: We present the case of a 35-year-old woman at 26 weeks of gestation who developed refractory intracranial hypertension secondary to rupture of a dural arteriovenous fistula. The patient was taken to surgery for decompressive hemicraniectomy, clot evacuation, and dural arteriovenous fistula resection. Subsequently, the patient was treated with pentobarbital coma for 5 days and achieved adequate control of her intracranial pressures. The patient and fetus were closely monitored by the obstetrics team with no apparent harm to fetal well-being during her hospital stay. The patient underwent planned cesarean delivery at term, and both the mother and newborn were discharged in stable condition with no known pentobarbital-related complications. CONCLUSIONS: Thus, we present the first case report demonstrating that pentobarbital coma may be a safe and efficacious option for treating pregnant patients with life-threatening refractory intracranial hypertension. We also provide dosing information for pentobarbital administration. Additional studies and reports involving pregnant patients are needed to better understand the impact of pentobarbital on both the mother and fetus. Furthermore, long-term follow-up of both the mother and newborn is critical to identifying any delayed sequelae of neonatal exposure to pentobarbital.

Postoperative seizures following endoscopic third ventriculostomy and choroid plexus cauterization: a case series.

OBJECTIVE: In this study, the authors sought to investigate variables associated with postoperative seizures following endoscopic third ventriculostomy and choroid plexus cauterization (ETV/CPC) for treatment of pediatric hydrocephalus. METHODS: A retrospective analysis of 37 patients who underwent ETV/CPC for treatment of hydrocephalus at an academic medical center from September 2016 to March 2021 was conducted. Demographics, etiology of hydrocephalus, operative details, electroencephalography (EEG) data, MRI findings, need for subsequent procedures, perioperative laboratory tests, medical history, and presence of clinical postoperative seizures were collected. Postoperative seizures were defined as clinical seizures within 24 hours of surgery. Eighteen patients received levetiracetam intraoperatively as well as over the next 7 days postoperatively for seizure prophylaxis. RESULTS: Of 37 included patients, 9 (24%) developed clinical seizures within 24 hours after surgery, 5 of whom subsequently had electroclinical seizures captured on video-EEG. The clinical seizures in 4 of those 5 patients (80%) may have been associated with the hemisphere of the brain through which the endoscope was introduced. The median corrected age of the cohort was 3.4 months. The median corrected age of patients who did not develop postoperative seizures was 2.3 months compared with 0.7 months for patients who did develop postoperative seizures (p > 0.99). Postoperative seizures occurred in 43% (3/7) of prenatally repaired myelomeningocele patients versus 29% (2/7) of postnatally repaired myelomeningocele patients. Of the 18 patients who received prophylactic levetiracetam, none (0%) developed postoperative seizures compared with 9 of the 19 patients (47%) who did not receive prophylactic levetiracetam (p = 0.014). CONCLUSIONS: Postoperative seizures were recorded in 24% of the pediatric patients who underwent ETV/CPC for hydrocephalus, which is higher than previously reported rates in the literature of 5%. Since 80% of the postoperative electrographic seizures may have been associated with the hemisphere through which the endoscope was introduced, the surgical entry site may contribute to postoperative seizure development. In patients who received prophylactic perioperative levetiracetam, the postoperative seizure incidence dropped to 0% compared with 47% in those who did not receive prophylactic perioperative levetiracetam. This finding indicates that the use of prophylactic perioperative levetiracetam may be efficacious in the prevention of clinical seizures in this patient population.

Adherence to Guidelines for Managing Severe Traumatic Brain Injury in Children.

Pediatric traumatic brain injury (TBI) protocols vary widely among institutions, despite the existence of published guidelines. This study seeks to identify significant differences in management of pediatric TBI across several institutions. Severe pediatric TBI protocols were collected from major US pediatric hospitals through direct communication with trauma staff. Of 24 institutions identified and contacted, 10 did not respond and 5 did not have a pediatric TBI protocol. Pediatric TBI protocols were successfully collected from 9 institutions. These 9 protocols were separated into treatment tiers analogous to those in the 2019 Society of Critical Care Medicine and World Federation of Pediatric Intensive and Critical Care Societies guidelines, and the intervention variables were identified and compared across the 9 institutions. First-line therapies were similar between institutions, including seizure prophylaxis, maintenance of normoglycemia and normothermia, and avoidance of hypoxia, hyponatremia, and hypotension. However, significant variation across institutions was found regarding timing of cerebrospinal fluid drainage, hyperventilation, and neuromuscular blockade. When included in institutional protocols, most therapies are in line with the 2019 guidelines, except for diversion of cerebrospinal fluid, hyperventilation, maintenance of cerebral perfusion pressure, and use of neuromuscular blocking agents. Although these variations may represent differences in style or preference, the optimal timing of these specific treatment variations should be studied to determine the impact of each protocol on clinical outcomes.

Pediatric Neurosurgery in Primary Care: Masses of the Scalp and Skull in Children.

There are a wide variety of scalp and skull lesions that can affect the pediatric population, many of which are first encountered by primary care physicians. The differential consists of a broad range of more common congenital lesions, sequelae of trauma, and vascular anomalies, to very rare neoplastic processes. It is important to understand signs and symptoms that may indicate whether a lesion may be benign versus life threatening, what imaging studies are appropriate and how to interpret them, and when to seek referrals to specialists.

Neoplastic Cerebral Aneurysm From Metastatic Nonsmall Cell Lung Carcinoma: Case Report and Literature Review.

BACKGROUND AND IMPORTANCE: Intracranial cerebral aneurysms secondary to neoplastic etiology are a very rare occurrence. There have only been 5 published reports of intracranial cerebral aneurysms secondary to metastatic lung cancer. Four of those five previously published reports have been secondary to nonsmall cell lung carcinoma, and only 1 case caused subarachnoid hemorrhage. To our knowledge, this is the first report of a lung cancer-associated superior cerebellar artery aneurysm. CLINICAL PRESENTATION: A 41-yr old male presented with right-sided cerebellar hemorrhage. Cerebral angiogram was negative, but he was noted to have an underlying nonsmall cell carcinoma. His workup revealed a left upper lobe mass consistent with a diagnosis of metastatic lung carcinoma. A few weeks later, the patient represented with subarachnoid hemorrhage from a left superior cerebellar artery aneurysm that was new in comparison with a magnetic resonance angiography 19 d earlier. The aneurysm was remote to the surgical site, and the patient had a negative infectious workup, making an iatrogenic pseudoaneurysm or mycotic aneurysm unlikely. In the setting of metastatic cancer, a neoplastic cerebral aneurysm was the presumptive diagnosis. CONCLUSION: Intracranial neoplastic cerebral aneurysms are extremely rare entities, and a rare cause of subarachnoid hemorrhage. This diagnosis should be considered in patients who present with concurrent metastatic cancer and cerebral aneurysm or aneurysmal subarachnoid hemorrhage. Early initiation of chemotherapy may be beneficial in reducing the risk of tumor-particle embolization, but more research needs to be conducted to better understand this rare phenomenon.