Browsing by Author "Ackerman, Laurie L."
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Item Acute Cytotoxic Cerebellar Edema Subsequent to Fentanyl Patch Intoxication in an Infant(Hindawi, 2021-09-07) Haut, Lindsey N.; Radhakrishnan, Rupa; Lutfi, Riad; Kao, Louise W.; Ackerman, Laurie L.; Emergency Medicine, School of MedicineThe opioid epidemic continues to have devastating consequences for children and families across the United States with rising prevalence of opioid use and abuse. Given the ease of access to these medications, accidental ingestion and overdose by children are becoming increasingly more common. The recognition of opioid-induced neurotoxicity and the associated life-threatening complication of acute cerebellar cytotoxic edema are crucial, as are the high morbidity and mortality without timely intervention. We discuss an infant with acute cytotoxic cerebellar edema following mucosal exposure to a transdermal fentanyl patch.Item Decompression for Chiari malformation type II in individuals with myelomeningocele in the National Spina Bifida Patient Registry(American Association of Neurological Surgeons, 2018) Kim, Irene; Hopson, Betsy; Aban, Inmaculada; Rizk, Elias B.; Dias, Mark S.; Bowman, Robin; Ackerman, Laurie L.; Partington, Michael D.; Castillo, Heidi; Castillo, Jonathan; Peterson, Paula R.; Blount, Jeffrey P.; Rocque, Brandon G.; Neurological Surgery, School of MedicineObjective: The purpose of this study was to determine the rate of decompression for Chiari malformation type II in individuals with myelomeningocele in the National Spina Bifida Patient Registry (NSBPR). In addition, the authors explored the variation in rates of Chiari II decompression across NSBPR institutions, examined the relationship between Chiari II decompression and functional lesion level of the myelomeningocele, age, and need for tracheostomy, and they evaluated for temporal trends in rates of Chiari II decompression. Methods: The authors queried the NSBPR to identify all individuals with myelomeningocele between 2009 and 2015. Among these patients, they identified individuals who had undergone at least 1 Chiari II decompression as well as those who had undergone tracheostomy. For each participating NSBPR institution, the authors calculated the proportion of patients enrolled at that site who underwent Chiari II decompression. Logistic regression was performed to analyze the relationship between Chiari II decompression, functional lesion level, age at decompression, and history of tracheostomy. Results: Of 4448 individuals with myelomeningocele identified from 26 institutions, 407 (9.15%) had undergone at least 1 Chiari II decompression. Fifty-one patients had undergone tracheostomy. Logistic regression demonstrated a statistically significant relationship between Chiari II decompression and functional lesion level of the myelomeningocele, with a more rostral lesion level associated with a higher likelihood of posterior fossa decompression. Similarly, children born before 2005 and those with history of tracheostomy had a significantly higher likelihood of Chiari II decompression. There was no association between functional lesion level and need for tracheostomy. However, among those children who underwent Chiari II decompression, the likelihood of also undergoing tracheostomy increased significantly with younger age at decompression. Conclusions: The rate of Chiari II decompression in patients with myelomeningocele in the NSBPR is consistent with that in previously published literature. There is a significant relationship between Chiari II decompression and functional lesion level of the myelomeningocele, which has not previously been reported. Younger children who undergo Chiari II decompression are more likely to have undergone tracheostomy. There appears to be a shift away from Chiari II decompression, as children born before 2005 were more likely to undergo Chiari II decompression than those born in 2005 or later.Item Delayed presentation of a traumatic scalp arteriovenous fistula(Scientific Scholar, 2021-05-25) Ordaz, Josue D.; Villelli, Nicolas W.; Bohsntedt, Bradley N.; Ackerman, Laurie L.; Neurological Surgery, School of MedicineBackground: Arteriovenous (AV) fistulas of the scalp are extracranial vascular malformations commonly caused by trauma and typically present within 3 years. Although they follow a benign course, they can be esthetically displeasing. Case description: We present an atypical onset of scalp AV fistula in a patient with a 1-year history of the left-sided pulsatile tinnitus and scalp swelling 7 years after a traumatic epidural hematoma evacuation. Our patient was found to have an 8 mm AV fistula supplied by the deep temporal artery. Endovascular embolization was performed using eight coils. There was no complication from the procedure, and the patient's pulsatile tinnitus and swelling resolved immediately after embolization. Follow-up angiogram demonstrated complete obliteration of the AV fistula. Conclusion: Delayed presentation of traumatic scalp AV fistula is very rare, and it is important to keep this in the differential in patients with scalp swelling after head trauma.Item Intracranial chordoma presenting as acute hemorrhage in a child: Case report and literature review(Wolters Kluwer, 2015-04-20) Moore, Kenneth A.; Bohnstedt, Bradley N.; Shah, Sanket U.; Abdulkader, Marwah M.; Bonnin, Jose M.; Ackerman, Laurie L.; Shaikh, Kashif; Kralik, Stephen F.; Shah, Mitesh V.; Department of Neurological Surgery, IU School of MedicineBACKGROUND: Chordomas are rare, slow-growing malignant neoplasms derived from remnants of the embryological notochord. Pediatric cases comprise only 5% of all chordomas, but more than half of the reported pediatric chordomas are intracranial. For patients of all ages, intracranial chordomas typically present with symptoms such as headaches and progressive neurological deficits occurring over several weeks to many years as they compress or invade local structures. There are only reports of these tumors presenting acutely with intracranial hemorrhage in adult patients. CASE DESCRIPTION: A 10-year-old boy presented with acute onset of headache, emesis, and diplopia. Head computed tomography and magnetic resonance imaging of brain were suspicious for a hemorrhagic mass located in the left petroclival region, compressing the ventral pons. The mass was surgically resected and demonstrated acute intratumoral hemorrhage. Pathologic examination was consistent with chordoma. CONCLUSION: There are few previous reports of petroclival chordomas causing acute intracranial hemorrhage. To the authors' knowledge, this is the first case of a petroclival chordoma presenting as acute intracranial hemorrhage in a pediatric patient. Although uncommon, it is important to consider chordoma when evaluating a patient of any age presenting with a hemorrhagic lesion of the clivus.Item Measures of Intracranial Injury Size Do Not Improve Clinical Decision Making for Children With Mild Traumatic Brain Injuries and Intracranial Injuries(Wolters Kluwer, 2022) Greenberg, Jacob K.; Olsen, Margaret A.; Johnson, Gabrielle W.; Ahluwalia, Ranbir; Hill, Madelyn; Hale, Andrew T.; Belal, Ahmed; Baygani, Shawyon; Foraker, Randi E.; Carpenter, Christopher R.; Ackerman, Laurie L.; Noje, Corina; Jackson, Eric M.; Burns, Erin; Sayama, Christina M.; Selden, Nathan R.; Vachhrajani, Shobhan; Shannon, Chevis N.; Kuppermann, Nathan; Limbrick, David D., Jr.; Neurological Surgery, School of MedicineBackground: When evaluating children with mild traumatic brain injuries (mTBIs) and intracranial injuries (ICIs), neurosurgeons intuitively consider injury size. However, the extent to which such measures (eg, hematoma size) improve risk prediction compared with the kids intracranial injury decision support tool for traumatic brain injury (KIIDS-TBI) model, which only includes the presence/absence of imaging findings, remains unknown. Objective: To determine the extent to which measures of injury size improve risk prediction for children with mild traumatic brain injuries and ICIs. Methods: We included children ≤18 years who presented to 1 of the 5 centers within 24 hours of TBI, had Glasgow Coma Scale scores of 13 to 15, and had ICI on neuroimaging. The data set was split into training (n = 1126) and testing (n = 374) cohorts. We used generalized linear modeling (GLM) and recursive partitioning (RP) to predict the composite of neurosurgery, intubation >24 hours, or death because of TBI. Each model's sensitivity/specificity was compared with the validated KIIDS-TBI model across 3 decision-making risk cutoffs (<1%, <3%, and <5% predicted risk). Results: The GLM and RP models included similar imaging variables (eg, epidural hematoma size) while the GLM model incorporated additional clinical predictors (eg, Glasgow Coma Scale score). The GLM (76%-90%) and RP (79%-87%) models showed similar specificity across all risk cutoffs, but the GLM model had higher sensitivity (89%-96% for GLM; 89% for RP). By comparison, the KIIDS-TBI model had slightly higher sensitivity (93%-100%) but lower specificity (27%-82%). Conclusion: Although measures of ICI size have clear intuitive value, the tradeoff between higher specificity and lower sensitivity does not support the addition of such information to the KIIDS-TBI model.Item Occipital-Cervical Fusion and Ventral Decompression in the Surgical Management of Chiari-1 Malformation and Syringomyelia: Analysis of Data From the Park-Reeves Syringomyelia Research Consortium(Wolters Kluwer, 2021-01-13) CreveCoeur, Travis S.; Yahanda, Alexander T.; Maher, Cormac O.; Johnson, Gabrielle W.; Ackerman, Laurie L.; Adelson, P. David; Ahmed, Raheel; Albert, Gregory W.; Aldana, Phillipp R.; Alden, Tord D.; Anderson, Richard C.E.; Baird, Lissa; Bauer, David F.; Bierbrauer, Karin S.; Brockmeyer, Douglas L.; Chern, Joshua J.; Couture, Daniel E.; Daniels, David J.; Dauser, Robert C.; Durham, Susan R.; Ellenbogen, Richard G.; Eskandari, Ramin; Fuchs, Herbert E.; George, Timothy M.; Grant, Gerald A.; Graupman, Patrick C.; Greene, Stephanie; Greenfield, Jeffrey P.; Gross, Naina L.; Guillaume, Daniel J.; Haller, Gabe; Hankinson, Todd C.; Heuer, Gregory G.; Iantosca, Mark; Iskandar, Bermans J.; Jackson, Eric M.; Jea, Andrew H.; Johnston, James M.; Keating, Robert F.; Kelly, Michael P.; Khan, Nickalus; Krieger, Mark D.; Leonard, Jeffrey R.; Mangano, Francesco T.; Mapstone, Timothy B.; McComb, J. Gordon; Menezes, Arnold H.; Muhlbauer, Michael; Oakes, W. Jerry; Olavarria, Greg; O’Neill, Brent R.; Park, Tae Sung; Ragheb, John; Selden, Nathan R.; Shah, Manish N.; Shannon, Chevis; Shimony, Joshua S.; Smith, Jodi; Smyth, Matthew D.; Stone, Scellig S.D.; Strahle, Jennifer M.; Tamber, Mandeep S.; Torner, James C.; Tuite, Gerald F.; Wait, Scott D.; Wellons, John C., III.; Whitehead, William E.; Limbrick, David D., Jr.; Neurological Surgery, School of MedicineBackground: Occipital-cervical fusion (OCF) and ventral decompression (VD) may be used in the treatment of pediatric Chiari-1 malformation (CM-1) with syringomyelia (SM) as adjuncts to posterior fossa decompression (PFD) for complex craniovertebral junction pathology. Objective: To examine factors influencing the use of OCF and OCF/VD in a multicenter cohort of pediatric CM-1 and SM subjects treated with PFD. Methods: The Park-Reeves Syringomyelia Research Consortium registry was used to examine 637 subjects with cerebellar tonsillar ectopia ≥ 5 mm, syrinx diameter ≥ 3 mm, and at least 1 yr of follow-up after their index PFD. Comparisons were made between subjects who received PFD alone and those with PFD + OCF or PFD + OCF/VD. Results: All 637 patients underwent PFD, 505 (79.2%) with and 132 (20.8%) without duraplasty. A total of 12 subjects went on to have OCF at some point in their management (PFD + OCF), whereas 4 had OCF and VD (PFD + OCF/VD). Of those with complete data, a history of platybasia (3/10, P = .011), Klippel-Feil (2/10, P = .015), and basilar invagination (3/12, P < .001) were increased within the OCF group, whereas only basilar invagination (1/4, P < .001) was increased in the OCF/VD group. Clivo-axial angle (CXA) was significantly lower for both OCF (128.8 ± 15.3°, P = .008) and OCF/VD (115.0 ± 11.6°, P = .025) groups when compared to PFD-only group (145.3 ± 12.7°). pB-C2 did not differ among groups. Conclusion: Although PFD alone is adequate for treating the vast majority of CM-1/SM patients, OCF or OCF/VD may be occasionally utilized. Cranial base and spine pathologies and CXA may provide insight into the need for OCF and/or OCF/VD.Item Quality of Resuscitative Care Provided to an Infant with Abusive Head Trauma in Community Emergency Departments: An In Situ, Prospective Simulation-Based Study(Wolters Kluwer, 2022-01) Lutfi, Riad; Berrens, Zachary J.; Ackerman, Laurie L.; Montgomery, Erin E.; Mustafa, Manahil; Kirby, Michele L.; Pearson, Kellie J.; Abu-Sultaneh, Samer; Abulebda, Kamal; Pediatrics, School of MedicineObjectives Abusive head trauma (AHT) is a very common and serious form of physical abuse, and a major cause of mortality and morbidity for young children. Early Recognition and supportive care of children with AHT is a common challenge in community emergency department (CEDs). We hypothesized that standardized, in situ simulation can be used to measure and compare the quality of resuscitative measures provided to children with AHT in a diverse set of CEDs. Methods This prospective, simulation-based study measured teams' performance across CEDs. The primary outcome was overall adherence to AHT using a 15-item performance assessment checklist based on the number of tasks performed correctly on the checklist. Results Fifty-three multiprofessional teams from 18 CEDs participated in the study. Of 270 participants, 20.7% were physicians, 65.2% registered nurses, and 14.1% were other providers. Out of all tasks, assessment of airway/breathing was the most successfully conducted task by 53/53 teams (100%). Although 43/53 teams (81%) verbalized the suspicion for AHT, only 21 (39.6%) of 53 teams used hyperosmolar agent, 4 (7.5%) of 53 teams applied cervical spine collar stabilization, and 6 (11.3%) of 53 teams raised the head of the bed. No significant difference in adherence to the checklist was found in the CEDs with an inpatient pediatric service or these with designated adult trauma centers compared with CEDs without. Community emergency departments closer to the main academic center outperformed CEDs these that are further away. Conclusions This study used in situ simulation to describe quality of resuscitative care provided to an infant presenting with AHT across a diverse set of CEDs, revealing variability in the initial recognition and stabilizing efforts and provided and targets for improvement. Future interventions focusing on reducing these gaps could improve the performance of CED providers and lead to improved patient outcomes.Item Rapid Improvement Project: Improving Caregivers’ Understanding of Safety Recommendations for Neurosurgical Devices(Wolters Kluwer, 2020-12-28) Anokwute, Miracle C.; Seibold, Dianne; Jea, Andrew; Ackerman, Laurie L.; Raskin, Jeffrey S.; Neurological Surgery, School of MedicineThere has been a proliferation in the development of indwelling neuromodulatory devices with varied safety recommendations, making it difficult for providers to remain up-to-date. This deficit presents an opportunity for significant improvement in patient safety. Methods: We performed a search for monopolar electrocautery and magnetic resonance imaging safety recommendations for several indwelling neuromodulatory devices. We developed a questionnaire followed by an educational compendium and a posttest for 50 care providers. Results: Overall, there was a poor performance on the pretest (mean 39%, SD 19%) but significant improvement on the posttest (mean 71%, SD 16%), P < 0.0001. We placed the educational compendium that included all manufacturer recommendations in the operating room for easy reference. A 2.4 times decrease in the case start times of vagus nerve stimulator cases is evidence of its effectiveness. Conclusions: The authors highlight the lack of knowledge about manufacturer safety recommendations for indwelling neurosurgical devices, which led to the creation of operating room supplements and educational devices.Item The Association of Post-Operative Dexmedetomidine with Pain, Opiate Utilization, and Hospital Length of Stay in Children Post- Chiari Decompression(American Association of Neurological Surgeons, 2021-12-10) Cater, Daniel T.; Rogerson, Colin M.; Hobson, Michael J.; Ackerman, Laurie L.; Rowan, Courtney M.; Pediatrics, School of MedicineObjective: The aim of this study was to determine the association of postoperative dexmedetomidine with markers of pain in children undergoing Chiari malformation decompression. The authors hypothesized that patients receiving dexmedetomidine postoperatively would have decreased cumulative opiate use. They further hypothesized that there would be no difference in median pain scores, outcomes, or medication adverse events. Methods: An IRB-approved retrospective cohort study of patients undergoing Chiari malformation decompression from December 1, 2015, to December 31, 2018, was performed. Patients aged 0-21 years who underwent intradural Chiari malformation decompression at a single institution were included. Data for those who used dexmedetomidine postoperatively were compared with those who did not use dexmedetomidine. The primary outcome was cumulative opiate use throughout hospitalization. Secondary outcomes included pain scores, ancillary medication use, adverse events, hospital and ICU length of stay, readmission rates, and hospital cost. Results: The authors reviewed the records of 172 patients who underwent Chiari malformation decompression. Of those patients, 86 received dexmedetomidine postoperatively and 86 did not. Demographics were not different between the groups. Patients who received dexmedetomidine postoperatively received more doses of dexamethasone and were also more frequently exposed to dexmedetomidine intraoperatively (p = 0.028). Patients who received dexmedetomidine postoperatively used fewer morphine equivalents during their admission (1.02 mg/kg vs 1.43 mg/kg, p = 0.003). The patients who received dexmedetomidine postoperatively also had lower median pain scores on postoperative day 0 (0 vs 2, p < 0.001), lower median pain scores throughout the entire admission (1 vs 2, p < 0.001), and lower maximum pain scores recorded (6 vs 8, p = 0.005). Adjusting for steroid dose number and intraoperative dexmedetomidine exposure, postoperative dexmedetomidine remained associated with lower opiate dosing, lower pain scores on postoperative day 0, lower scores throughout hospital stay, and lower maximum pain scores. Patients who received dexmedetomidine had shorter hospital lengths of stay by 19 hours (p < 0.001). There were no statistically significant differences in medication adverse events or hospital costs between the two groups. Conclusions: Postoperative dexmedetomidine use was associated with decreased opiate use, lower pain scores, and shorter hospital length of stay in this cohort. Dexmedetomidine may be considered as a safe adjuvant medication that may have opiate-sparing effects for this patient population.Item Treated hydrocephalus in individuals with myelomeningocele in the National Spina Bifida Patient Registry(American Association of Neurological Surgeons, 2018) Kim, Irene; Hopson, Betsy D.; Aban, Inmaculada; Rizk, Elias B.; Dias, Mark S.; Bowman, Robin; Ackerman, Laurie L.; Partington, Michael D.; Castillo, Heidi; Castillo, Jonathan; Peterson, Paula R.; Blount, Jeffrey P.; Rocque, Brandon G.; Neurological Surgery, School of MedicineIntroduction: Although the majority of patients with myelomeningocele have hydrocephalus, reported rates of treatment of hydrocephalus vary widely. The purpose of this study was to determine the rate of surgical treatment for hydrocephalus in patients with myelomeningocele in the National Spina Bifida Patient Registry (NSBPR). In addition, we explored the variation in shunting rates across NSBPR institutions, examined the relationship between hydrocephalus and the functional lesion level of the myelomeningocele, and evaluated for temporal trends in rates of treated hydrocephalus. Methods: We queried the NSBPR to identify all patients with myelomeningoceles. Individuals were identified as having treated hydrocephalus if they had undergone at least one hydrocephalus-related operation. For each participating NSBPR institution, we calculated the proportion of patients enrolled at that site with treated hydrocephalus. Logistic regression was performed to analyze the relationship between hydrocephalus and the functional lesion level of the myelomeningocele as well as to compare the rate of treated hydrocephalus in children born before 2005 to those born in 2005 or later. Results: A total of 4448 patients with myelomeningocele were identified from 26 institutions, of whom 3558 patients (79.99%) had undergone at least one hydrocephalus-related operation. The rate of treated hydrocephalus ranged from 72% to 96% among institutions enrolling more than 10 patients. This difference in treatment rates between centers was statistically significant (p<0.001). Insufficient data were available in the NSBPR to analyze reasons for the different rate of hydrocephalus treatment between sites. Multivariate logistic regression demonstrated that more rostral functional lesion levels were associated with higher rates of treated hydrocephalus (p < 0.001) but demonstrated no significant difference in hydrocephalus treatment rates between children born before versus after 2005. Conclusion: The rate of hydrocephalus treatment in patients with myelomeningocele in the NSBPR is 79.99%, which is consistent with previously published literature. Our data demonstrate a clear association between functional lesion level of the myelomeningocele and the need for hydrocephalus treatment.