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Brandel MG, Lin C, Rennert RC, Plonsker JH, Khan UA, Crawford JR, Nation J, Levy ML. Surgical management of Rathke cleft cysts in pediatric patients: a single institution experience. Childs Nerv Syst 2024; 40:1367-1375. [PMID: 38240786 PMCID: PMC11026193 DOI: 10.1007/s00381-024-06277-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/03/2024] [Indexed: 04/19/2024]
Abstract
OBJECTIVE Rathke cleft cysts (RCCs) are benign, epithelial-lined sellar lesions that arise from remnants of the craniopharyngeal duct. Due to their rarity in the pediatric population, data are limited regarding the natural history and optimal management of growing or symptomatic RCCs. We present our institutional experience with the surgical management of RCCs. METHODS We performed a retrospective study of consecutive RCC patients ≤ 18 years old treated surgically at our institution between 2006 and 2022. RESULTS Overall, 567 patients with a diagnosis of pituitary mass or cyst were identified. Of these, 31 had a histopathological diagnosis of RCC, 58% female and 42% male. The mean age was 13.2 ± 4.2 years. Presenting symptoms included headache (58%), visual changes (32%), and endocrinopathies or growth delay (26%); 13% were identified incidentally and subsequently demonstrated growth on serial imaging. Six percent presented with symptomatic intralesional hemorrhage. Surgical approach was transsphenoidal for 90% of patients and orbitozygomatic for 10%. Preoperative headaches resolved in 61% of patients and preoperative visual deficits improvement in 55% after surgery. New pituitary axis deficits were seen in 9.7% of patients. Only two complications occurred from a first-time surgery: one cerebrospinal fluid leak requiring lumbar drain placement, and one case of epistaxis requiring cauterization. No patients experienced new visual or neurological deficits. Patients were followed postoperatively with serial imaging at a mean follow-up was 62.9 ± 58.4 months. Recurrence requiring reoperation occurred in 32% of patients. Five-year progression-free survival was 47.9%. Except for one patient with multiple neurological deficits from a concurrent tectal glioma, all patients had a modified Rankin Scale score of 0 or 1 (good outcome) at last follow-up. CONCLUSION Due to their secretory epithelium, pediatric RCCs may demonstrate rapid growth and can cause symptoms due to local mass effect. Surgical management of symptomatic or growing pediatric RCCs via cyst fenestration or partial resection of the cyst wall can be performed safely, with good neurologic outcomes. There is a nontrivial risk of endocrinologic injury, and long-term follow up is needed due to high recurrence rates.
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Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - Christine Lin
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, 84112, USA
| | - Jillian H Plonsker
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - Usman A Khan
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - John R Crawford
- Division of Child Neurology and Neurosciences Institute, Children's Hospital of Orange County and University of California Irvine, Orange, CA, 92868, USA
- Division of Neurology, Rady Children's Hospital, San Diego, CA, 92123, USA
| | - Javan Nation
- Department of Otolaryngology, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - Michael L Levy
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA.
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Brandel MG, Plonsker JH, Rennert RC, Produturi G, Saripella M, Wali AR, McCann C, Ravindra VM, Santiago-Dieppa DR, Pannell JS, Steinberg JA, Khalessi AA, Levy ML. Treatment of pediatric intracranial aneurysms: institutional case series and systematic literature review. Childs Nerv Syst 2024:10.1007/s00381-024-06384-x. [PMID: 38635071 DOI: 10.1007/s00381-024-06384-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 03/27/2024] [Indexed: 04/19/2024]
Abstract
INTRODUCTION Pediatric intracranial aneurysms (IAs) are rare and have distinct clinical profiles compared to adult IAs. They differ in location, size, morphology, presentation, and treatment strategies. We present our experience with pediatric IAs over an 18-year period using surgical and endovascular treatments and review the literature to identify commonalities in epidemiology, treatment, and outcomes. METHODS We identified all patients < 20 years old who underwent treatment for IAs at our institution between 2005 and 2020. Medical records and imaging were examined for demographic, clinical, and operative data. A systematic review was performed to identify studies reporting primary outcomes of surgical and endovascular treatment of pediatric IAs. Demographic information, aneurysm characteristics, treatment strategies, and outcomes were collected. RESULTS Thirty-three patients underwent treatment for 37 aneurysms over 18 years. The mean age was 11.4 years, ranging from one month to 19 years. There were 21 males (63.6%) and 12 females (36.4%), yielding a male: female ratio of 1.75:1. Twenty-six (70.3%) aneurysms arose from the anterior circulation and 11 (29.7%) arose from the posterior circulation. Aneurysmal rupture occurred in 19 (57.5%) patients, of which 8 (24.2%) were categorized as Hunt-Hess grades IV or V. Aneurysm recurrence or rerupture occurred in five (15.2%) patients, and 5 patients (15.2%) died due to sequelae of their aneurysms. Twenty-one patients (63.6%) had a good outcome (modified Rankin Scale score 0-2) on last follow up. The systematic literature review yielded 48 studies which included 1,482 total aneurysms (611 with endovascular treatment; 656 treated surgically; 215 treated conservatively). Mean aneurysm recurrence rates in the literature were 12.7% and 3.9% for endovascular and surgical treatment, respectively. CONCLUSIONS Our study provides data on the natural history and longitudinal outcomes for children treated for IAs at a single institution, in addition to our treatment strategies for various aneurysmal morphologies. Despite the high proportion of patients presenting with rupture, good functional outcomes can be achieved for most patients.
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Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - Jillian H Plonsker
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of Utah, 175 North Medical Drive East, Salt Lake City, CA, USA
| | - Gautam Produturi
- School of Medicine, University of California, San Diego, CA, USA
| | - Megana Saripella
- School of Medicine, University of California, San Diego, CA, USA
| | - Arvin R Wali
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - Carson McCann
- School of Medicine, University of California, San Diego, CA, USA
| | - Vijay M Ravindra
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - David R Santiago-Dieppa
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - J Scott Pannell
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - Jeffrey A Steinberg
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - Alexander A Khalessi
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA
| | - Michael L Levy
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, USA.
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Tenorio A, Brandel MG, McCann CP, Doucet JJ, Costantini TW, Khalessi AA, Ciacci JD. Traumatic Brain Injuries After Falls From Height vs Falls at the US-Mexico Border Wall. JAMA Surg 2024:2817240. [PMID: 38598245 PMCID: PMC11007647 DOI: 10.1001/jamasurg.2024.0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/06/2024] [Indexed: 04/11/2024]
Abstract
This cohort study examines the incidence, severity, and mortality of fall-related injuries among migrants at the US-Mexico border in San Diego, California.
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Affiliation(s)
- Alexander Tenorio
- Department of Neurosurgery, University of California, San Diego, San Diego
| | - Michael G. Brandel
- Department of Neurosurgery, University of California, San Diego, San Diego
| | - Carson P. McCann
- School of Medicine, University of California, San Diego, San Diego
| | - Jay J. Doucet
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego
| | - Todd W. Costantini
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego
| | | | - Joseph D. Ciacci
- Department of Neurosurgery, University of California, San Diego, San Diego
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Wiśniewski K, Zaczkowski K, Podstawka M, Szmyd BM, Bobeff EJ, Stefańczyk L, Brandel MG, Jaskólski DJ, Fahlström A. Predictors of 30-day mortality for surgically treated patients with spontaneous supratentorial intracerebral haemorrhage and validation of the Surgical Swedish ICH Score: a retrospective single-centre analysis of 136 cases. World Neurosurg 2024:S1878-8750(24)00558-8. [PMID: 38583570 DOI: 10.1016/j.wneu.2024.03.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 03/30/2024] [Indexed: 04/09/2024]
Abstract
We aimed to: identify independent risk factors of 30-day mortality in patients with surgically treated spontaneous supratentorial ICH, validate the SwICH Score within Polish Healthcare System, and compare the SwICH Score to the ICH Score. We carried out a single-centre retrospective analysis of the medical data juxtaposed with CT scans of 136 ICH patients treated surgically between 2008 and 2022. Statistical analysis was performed using the same characteristics as in the SwICH Score and the ICH Score. Backward stepwise logistic regression with both 5-fold cross-validation and 1000x bootstrap procedure was used to create new scoring system. Finally predictive potential of these scales were compared. The most important predictors of 30-days mortality were: ICH volume (p<0.01), GCS at admission (p<0.01), anticoagulant status (p=0.03), and age (p<0.01). The SwICH score appears to have a better predictive potential than the ICH score, although this did not reach statistical significance [AUC: 0.789 (95% CI: 0.715-0.863) vs. AUC: 0.757 (95% CI: 0.677-0.837)]. Moreover, based on the analysed characteristics, we developed our score (encompassing: age, ICH volume, anticoagulants status, GCS at admission), [AUC of 0.872 (95% CI: 0.815-0.929)]. This score was significantly better than previous ones. Differences in healthcare systems seem to affect the accuracy of prognostic scales for patients with ICH, including possible differences in indications for surgery and postoperative care. Thus, it is important to validate assessment tools before they can be applied in a new setting and develop population-specific scores. This may improve the effectiveness of risk stratification in patients with ICH.
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Affiliation(s)
- Karol Wiśniewski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland.
| | - Karol Zaczkowski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland
| | - Małgorzata Podstawka
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland
| | - Bartosz M Szmyd
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland
| | - Ernest J Bobeff
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland; Department of Sleep Medicine and Metabolic Disorders, Medical University of Łódź, Poland
| | - Ludomir Stefańczyk
- Department of Radiology-Diagnostic Imaging, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, San Diego, CA 92123, USA
| | - Dariusz J Jaskólski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital Kopcińskiego 22, 90-153 Łódź, Poland
| | - Andreas Fahlström
- Department of Medical Sciences, Section of Neurosurgery, Uppsala University, Uppsala, Sweden
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Wiśniewski K, Tyfa Z, Reorowicz P, Brandel MG, Adel T, Obidowski D, Jóźwik K, Levy ML. Numerical flow experiment for assessing predictors for cerebrovascular accidents in patients with PHACES syndrome. Sci Rep 2024; 14:5161. [PMID: 38431727 PMCID: PMC10908848 DOI: 10.1038/s41598-024-55345-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 02/22/2024] [Indexed: 03/05/2024] Open
Abstract
There is an increased risk of cerebrovascular accidents (CVA) in individuals with PHACES, yet the precise causes are not well understood. In this analysis, we aimed to examine the role of arteriopathy in PHACES syndrome as a potential contributor to CVA. We analyzed clinical and radiological data from 282 patients with suspected PHACES syndrome. We analyzed clinical features, including the presence of infantile hemangioma and radiological features based on magnetic resonance angiography or computed tomography angiography, in individuals with PHACES syndrome according to the Garzon criteria. To analyze intravascular blood flow, we conducted a simulation based on the Fluid-Structure Interaction (FSI) method, utilizing radiological data. The collected data underwent statistical analysis. Twenty patients with PHACES syndrome were included. CVAs were noted in 6 cases. Hypoplasia (p = 0.03), severe tortuosity (p < 0.01), absence of at least one main cerebral artery (p < 0.01), and presence of persistent arteries (p = 0.01) were associated with CVAs, with severe tortuosity being the strongest predictor. The in-silico analysis showed that the combination of hypoplasia and severe tortuosity resulted in a strongly thrombogenic environment. Severe tortuosity, combined with hypoplasia, is sufficient to create a hemodynamic environment conducive to thrombus formation and should be considered high-risk for cerebrovascular accidents (CVAs) in PHACES patients.
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Affiliation(s)
- Karol Wiśniewski
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA.
- Department of Neurosurgery and Neurooncology, Medical University of Lodz, Barlicki University Hospital, Kopcińskiego 22, 90-153, Lodz, Poland.
- Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Str., 90-924, Lodz, Poland.
| | - Zbigniew Tyfa
- Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Str., 90-924, Lodz, Poland
| | - Piotr Reorowicz
- Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Str., 90-924, Lodz, Poland
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - Thomas Adel
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
- Medical University of Vienna, Spitalgasse 23 Str., 1090, Wien, Austria
| | - Damian Obidowski
- Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Str., 90-924, Lodz, Poland
| | - Krzysztof Jóźwik
- Institute of Turbomachinery, Lodz University of Technology, 219/223 Wolczanska Str., 90-924, Lodz, Poland
| | - Michael L Levy
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
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Wali AR, Pathuri S, Brandel MG, Sindewald RW, Hirshman BR, Bravo JA, Steinberg JA, Olson SE, Pannell JS, Khalessi A, Santiago-Dieppa D. Reducing frame rate and pulse rate for routine diagnostic cerebral angiography: ALARA principles in practice. J Cerebrovasc Endovasc Neurosurg 2024; 26:46-50. [PMID: 38092365 PMCID: PMC10995471 DOI: 10.7461/jcen.2023.e2023.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 08/21/2023] [Accepted: 09/16/2023] [Indexed: 04/06/2024] Open
Abstract
OBJECTIVE Diagnostic cerebral angiograms (DCAs) are widely used in neurosurgery due to their high sensitivity and specificity to diagnose and characterize pathology using ionizing radiation. Eliminating unnecessary radiation is critical to reduce risk to patients, providers, and health care staff. We investigated if reducing pulse and frame rates during routine DCAs would decrease radiation burden without compromising image quality. METHODS We performed a retrospective review of prospectively acquired data after implementing a quality improvement protocol in which pulse rate and frame rate were reduced from 15 p/s to 7.5 p/s and 7.5 f/s to 4.0 f/s respectively. Radiation doses and exposures were calculated. Two endovascular neurosurgeons reviewed randomly selected angiograms of both doses and blindly assessed their quality. RESULTS A total of 40 consecutive angiograms were retrospectively analyzed, 20 prior to the protocol change and 20 after. After the intervention, radiation dose, radiation per run, total exposure, and exposure per run were all significantly decreased even after adjustment for BMI (all p<0.05). On multivariable analysis, we identified a 46% decrease in total radiation dose and 39% decrease in exposure without compromising image quality or procedure time. CONCLUSIONS We demonstrated that for routine DCAs, pulse rate of 7.5 with a frame rate of 4.0 is sufficient to obtain diagnostic information without compromising image quality or elongating procedure time. In the interest of patient, provider, and health care staff safety, we strongly encourage all interventionalists to be cognizant of radiation usage to avoid unnecessary radiation exposure and consequential health risks.
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Affiliation(s)
- Arvin R. Wali
- Department of Neurosurgery, University of California San Diego, CA, USA
| | - Sarath Pathuri
- Long School of Medicine, University of Texas Health Sciences Center at San Antonio, TX, USA
| | | | - Ryan W. Sindewald
- Department of Neurosurgery, University of California San Diego, CA, USA
| | - Brian R. Hirshman
- Department of Neurosurgery, University of California San Diego, CA, USA
| | - Javier A. Bravo
- Department of General Surgery, University of California San Diego, CA, USA
| | | | - Scott E. Olson
- Department of Neurosurgery, University of California San Diego, CA, USA
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Wali AR, Sindewald RW, Brandel MG, Bravo J, Steinberg JA, Pannell JS, Khalessi AA, Santiago-Dieppa DR. Optimizing suction force in mechanical thrombectomy: Priming the aspiration tubing with air versus saline. J Cerebrovasc Endovasc Neurosurg 2024:jcen.2024.E2023.09.003. [PMID: 38403576 DOI: 10.7461/jcen.2024.e2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 01/29/2024] [Indexed: 02/27/2024] Open
Abstract
Objective We sought to investigate how priming the tube between air versus air mixed with saline ex vivo influenced suction force. We examined how priming the tube influenced peak suction force and time to achieve peak suction force between both modalities. Methods Using a Dwyer Instruments (Dwyer Instruments Inc., Michigan City, IN, USA), INC Digitial Pressure Gauge, we were able to connect a .072 inch aspiration catheter to a rotating hemostatic valve and to aspiration tubing. We recorded suction force measured in negative inches of Mercury (inHg) over 10 iterations between having the aspiration tube primed with air alone versus air mixed with saline. A test was used to compare results between both modalities. Results Priming the tube with air alone compared to air mixed with saline was found to have an increased average max suction force (-28.60 versus -28.20 in HG, p<0.01). We also identified a logarithmic curve of suction force across time in which time to maximal suction force was more prompt with air compared with air mixed with saline (13.8 seconds versus 21.60 seconds, p<0.01). Conclusions Priming the tube with air compared to air mixed with saline suggests that not only is increased maximal suction force achieved, but also the time required to achieve maximal suction force is less. This data suggests against priming the aspiration tubing with saline and suggests that the first pass aspiration primed with air may have the greatest suction force.
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Affiliation(s)
- Arvin R Wali
- Department of Neurological Surgery, University of California, San Diego, USA
| | - Ryan W Sindewald
- Department of Neurological Surgery, University of California, San Diego, USA
| | - Michael G Brandel
- Department of Neurological Surgery, University of California, San Diego, USA
| | - Javier Bravo
- Department of General Surgery, University of California, San Diego, USA
| | - Jeffrey A Steinberg
- Department of Neurological Surgery, University of California, San Diego, USA
| | - J Scott Pannell
- Department of Neurological Surgery, University of California, San Diego, USA
| | | | - David R Santiago-Dieppa
- Department of Neurological Surgery, University of California, San Diego, USA
- Program in Materials Science and Engineering, University of California, San Diego, USA
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Wiśniewski K, Gajos A, Zaczkowski K, Szulia A, Grzegorczyk M, Dąbkowska A, Wójcik R, Bobeff EJ, Kwiecień K, Brandel MG, Fahlström A, Bogucki A, Ciszek B, Jaskólski DJ. Overlapping stimulation of subthalamic nucleus and dentato-rubro-thalamic tract in Parkinson's disease after deep brain stimulation. Acta Neurochir (Wien) 2024; 166:106. [PMID: 38403814 DOI: 10.1007/s00701-024-06006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 02/09/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Deep brain stimulation (DBS) of the subthalamic nucleus (STN) reduces tremor, rigidity, and akinesia. According to the literature, the dentato-rubro-thalamic tract (DRTt) is verified target for DBS in essential tremor; however, its role in the treatment of Parkinson's disease is only vaguely described. The aim of our study was to identify the relationship between symptom alleviation in PD patients and the distance of the DBS electrode electric field (EF) to the DRTt. METHODS A single-center retrospective analysis of patients (N = 30) with idiopathic Parkinson's disease (PD) who underwent DBS between November 2018 and January 2020 was performed. DRTt and STN were visualized using diffusion-weighted imaging (DWI) and tractography protocol of magnetic resonance (MR). The EF was calculated and compared with STN and course of DRTt. Evaluation of patients before and after surgery was performed with use of UPDRS-III scale. The association between distance from EF to DRTt and clinical outcomes was examined. To confirm the anatomical variation between DRTt and STN observed in tractography, white matter dissection was performed with the Klingler technique on ten human brains. RESULTS Patients with EF overlapping STN and DRTt benefited from significant motor symptoms improvement. Anatomical findings confirmed the presence of population differences in variability of the DRTt course and were consistent with the DRTt visualized by MR. CONCLUSIONS DRTt proximity to STN, the main target in PD DBS surgery, confirmed by DWI with tractography protocol of MR combined with proper predefined stimulation parameters may improve efficacy of DBS-STN.
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Affiliation(s)
- K Wiśniewski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland.
| | - A Gajos
- Department of Extrapyramidal Diseases, Medical University of Łódź, Łódź, Poland
| | - K Zaczkowski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland
| | - A Szulia
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland
| | - M Grzegorczyk
- Department of Descriptive and Clinical Anatomy, Medical University of Warsaw, Warsaw, Poland
| | - A Dąbkowska
- Department of Forensic Medicine, Medical University of Warsaw, Warsaw, Poland
| | - R Wójcik
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland
| | - E J Bobeff
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, Łódź, Poland
| | - K Kwiecień
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland
| | - M G Brandel
- Department of Neurosurgery, University of California, San Diego, San Diego, CA, 92123, USA
| | - A Fahlström
- Department of Medical Sciences, Section of Neurosurgery, Uppsala University, Uppsala, Sweden
| | - A Bogucki
- Department of Extrapyramidal Diseases, Medical University of Łódź, Łódź, Poland
| | - B Ciszek
- Department of Descriptive and Clinical Anatomy, Medical University of Warsaw, Warsaw, Poland
| | - D J Jaskólski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Barlicki University Hospital, Łódź, Poland
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Chandra A, Lopez-Rivera V, Ryba B, Chandran AS, Brandel MG, Dono A, Sheinberg DL, Esquenazi YL, Aghi MK. Survival outcomes and prognostic factors of infratentorial glioblastoma in the elderly. Clin Neurol Neurosurg 2024; 236:108084. [PMID: 38141552 DOI: 10.1016/j.clineuro.2023.108084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/25/2023]
Abstract
INTRODUCTION Infratentorial glioblastoma(itGBM) is a rare and rapidly progressive form of GBM with poor prognosis. However, no studies have adequately examined itGBM outcomes in elderly patients (>65 years). Here, we used a national database to fill this knowledge gap. METHODS SEER 18 registries were utilized to identify adult itGBM patients diagnosed between 2000-2016. itGBM cases were further divided into cerebellar and brainstem GBM as cGBM and bGBM, respectively. Kaplan-Meier analysis and Cox hazards proportional regression models were performed to assess factors associated with overall survival (OS). RESULTS Among 137 (33%) elderly patients from the study cohort (N = 420), median age was 74 years, 38% were female, and 85% were white. Median OS in elderly itGBM patients was shorter than younger adults (10 vs. 5-months, p < 0.001). Multivariate analysis by tumor location revealed that older age was associated with poor survival for cGBM, but not for bGBM. Gross-total resection (GTR) was associated with better outcomes for both cGBM and bGBM. Radiotherapy had survival benefits for cGBM; meanwhile, chemotherapy prolonged OS in bGBM. In the elderly, advanced age (80 + years) was associated with poor outcomes, while GTR, CT and RT were all associated with improved survival. CONCLUSIONS In our study, while elderly patients had worse survival compared to younger adults for both cGBM and bGBM, GTR improved OS in elderly itGBM, with CT and RT exhibiting a location-dependent survival benefit. Thus, elderly itGBM patients should undergo a combination of maximal resection and adjuvant treatment guided by infratentorial tumor location for maximal survival benefit.
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Affiliation(s)
- Ankush Chandra
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | | | - Bryan Ryba
- Department of Neurosurgery, University of California, La Jolla, San Diego, CA, USA
| | - Arjun S Chandran
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California, La Jolla, San Diego, CA, USA
| | - Antonio Dono
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Dallas L Sheinberg
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Yoshua L Esquenazi
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Manish K Aghi
- Department of Neurological Surgery, University of California, San Francisco; San Francisco, CA 94131, USA.
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10
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McCann CP, Brandel MG, Wali AR, Steinberg JA, Pannell JS, Santiago-Dieppa DR, Khalessi AA. Safety of middle meningeal artery embolization for treatment of subdural hematoma: A nationwide propensity score matched analysis. J Cerebrovasc Endovasc Neurosurg 2023; 25:380-389. [PMID: 37469029 PMCID: PMC10774674 DOI: 10.7461/jcen.2023.e2023.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/21/2023] Open
Abstract
OBJECTIVE Middle meningeal artery embolization (MMAe) has burgeoned as a treatment for chronic subdural hematoma (cSDH). This study evaluates the safety and short-term outcomes of MMAe patients relative to traditional treatment approaches. METHODS In this retrospective large database study, adult patients in the National Inpatient Sample from 2012-2019 with a diagnosis of cSDH were identified. Cost of admission, length of stay (LOS), discharge disposition, and complications were analyzed. Propensity score matching (PSM) was utilized. RESULTS A total of 123,350 patients with cSDH were identified: 63,450 without intervention, 59,435 surgery only, 295 MMAe only, and 170 surgery plus MMAe. On PSM analysis, MMAe did not increase the risk of inpatient complications or prolong the length of stay compared to conservative management (p>0.05); MMAe had higher cost ($31,170 vs. $10,768, p<0.001) than conservative management, and a lower rate of nonroutine discharge (53.8% vs. 64.3%, p=0.024). Compared to surgery, MMAe had shorter LOS (5 vs. 7 days, p<0.001), and lower rates of neurological complications (2.7% vs. 7.1%, p=0.029) and nonroutine discharge (53.8% vs. 71.7%, p<0.001). There was no significant difference in cost (p>0.05). CONCLUSIONS MMAe had similar LOS and decreased odds of adverse discharge with a modest cost increase compared to conservative management. There was no difference in inpatient complications. Compared to surgery, MMAe treatment was associated with decreased LOS and rates of neurological complications and nonroutine discharge. This nationwide analysis supports the safety of MMAe to treat cSDH.
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Affiliation(s)
- Carson P. McCann
- Department of Neurosurgery, University of California, San Diego, CA, USA
| | - Michael G. Brandel
- Department of Neurosurgery, University of California, San Diego, CA, USA
| | - Arvin R. Wali
- Department of Neurosurgery, University of California, San Diego, CA, USA
| | | | - J. Scott Pannell
- Department of Neurosurgery, University of California, San Diego, CA, USA
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Steinberg JA, Brandel MG, Wali AR, Mahata S, Rennert RC, Santiago Dieppa DR, Pannell JS, Khalessi AA, Olson SE. Direct Transorbital Approach for Treatment of Carotid Cavernous Fistula: An Illustrative Case Series. Oper Neurosurg (Hagerstown) 2023; 25:324-333. [PMID: 37345917 DOI: 10.1227/ons.0000000000000808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/03/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Endovascular techniques have become the first-line treatment for carotid-cavernous fistulas (CCFs). Direct transorbital venous access may be used if anatomic constraints limit standard transarterial or transvenous access. We describe our institutional experience with the transorbital approach for Barrow Type A-D CCFs. METHODS Patients with CCFs undergoing transorbital endovascular treatment at our institution between 2017 and 2019 were retrospectively reviewed. Demographic, treatment, and outcome data were collected. RESULTS Eight patients met inclusion criteria, 4 female and 4 male patients. The mean age was 43 years, with 6 right-sided CCF and 2 left-sided CCFs. Symptoms were present for an average of 1.5 months before treatment. All patients presented with eye pain and subjective visual changes. Seven (87.5%) patients presented with proptosis, 6 (75%) patients had elevated intraocular pressure (IOP), and 3 (37.5%) patients had ophthalmoplegia. Six CCFs (75%) were spontaneous, and 2 CCFs (25%) were traumatic. Barrow types were A (n = 1), B (n = 1), C (n = 1), and D (n = 5). All patients underwent direct percutaneous transorbital embolization with coils followed by Onyx. Three patients had undergone prior transarterial and/or transvenous treatment. A radiographic cure was obtained in all patients after direct transorbital embolization. After CCF cure, cranial nerve palsies resolved in 66.7% of patients, visual acuity in the affected eye was improved or stable in 75% of patients, and IOP had normalized in 85.7% of patients. Proptosis improved in all patients, with complete resolution in 75%. CONCLUSION Direct transorbital embolization is a safe and potentially curative treatment for all 4 Barrow types of CCFs.
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Affiliation(s)
- Jeffrey A Steinberg
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Arvin R Wali
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Sumana Mahata
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of Utah, Salt Lake City, Utah, USA
| | | | - J Scott Pannell
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Alexander A Khalessi
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Scott E Olson
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
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12
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Brandel MG, Kunwar N, Alattar AA, Kang KM, Forseth KJ, Rennert RC, Shih JJ, Ben-Haim S. A cost analysis of MR-guided laser interstitial thermal therapy for adult refractory epilepsy. Epilepsia 2023; 64:2286-2296. [PMID: 37350343 DOI: 10.1111/epi.17693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 06/24/2023]
Abstract
OBJECTIVE MR-guided laser interstitial thermal therapy (LITT) is used increasingly for refractory epilepsy. The goal of this investigation is to directly compare cost and short-term adverse outcomes for adult refractory epilepsy treated with temporal lobectomy and LITT, as well as to identify risk factors for increased costs and adverse outcomes. METHODS The National Inpatient Sample (NIS) was queried for patients who received LITT between 2012 and 2019. Patients with adult refractory epilepsy were identified. Multivariable mixed-effects models were used to analyze predictors of cost, length of stay (LOS), and complications. RESULTS LITT was associated with reduced LOS and overall cost relative to temporal lobectomy, with a statistical trend toward lower incidence of postoperative complications. High-volume surgical epilepsy centers had lower LOS overall. Longer LOS was a significant driver of increased cost for LITT, and higher comorbidity was associated with non-routine discharge. SIGNIFICANCE LITT is an affordable alternative to temporal lobectomy for adult refractory epilepsy with an insignificant reduction in inpatient complications. Patients may benefit from expanded access to this treatment modality for both its reduced LOS and lower cost.
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Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, University of California San Diego, San Diego, California, USA
| | - Nikhita Kunwar
- Department of Neurosurgery, University of California San Diego, San Diego, California, USA
| | - Ali A Alattar
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Keiko M Kang
- Department of Neurosurgery, University of Southern California, Los Angeles, California, USA
| | - Kiefer J Forseth
- Department of Neurosurgery, University of California San Diego, San Diego, California, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of Utah, Salt Lake City, Utah, USA
| | - Jerry J Shih
- Department of Neurosciences, University of California San Diego, San Diego, California, USA
| | - Sharona Ben-Haim
- Department of Neurosurgery, University of California San Diego, San Diego, California, USA
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Tenorio A, Brandel MG, Produturi GR, McCann CP, Wali AR, Bravo J, Godat LN, Doucet JJ, Costantini TW, Santiago-Dieppa DR, Ciacci JD. Characterizing the frequency, morbidity, and types of traumatic brain injuries after the Mexico-San Diego border wall extension: a retrospective cohort review. J Neurosurg 2023; 139:848-853. [PMID: 36806495 DOI: 10.3171/2023.1.jns221859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/12/2023] [Indexed: 02/23/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the impact of the US-Mexico border wall height extension on traumatic brain injuries (TBIs) and related costs. METHODS In this retrospective cohort study, patients who presented to the UC San Diego Health Trauma Center for injuries from falling at the border wall between 2016 and 2021 were considered. Patients in the pre-height extension period (January 2016-May 2018) were compared with those in the post-height extension period (January 2020-December 2021). Demographic characteristics, clinical data, and hospital charges were analyzed. RESULTS A total of 383 patients were identified: 51 (0 TBIs, 68.6% male) in the pre-height extension cohort and 332 (14 TBIs, 77.1% male) in the post-height extension cohort, with mean ages of 33.5 and 31.5 years, respectively. There was an increase in the average number of TBIs per month (0.0 to 0.34) and operative TBIs per month (0.0 to 0.12). TBIs were associated with increased Injury Severity Score (8.8 vs 24.2, p < 0.001), median (IQR) hospital length of stay (5.0 [2-11] vs 8.5 [4-45] days, p = 0.03), and median (IQR) hospital charges ($163,490 [$86,369-$277,918] vs $243,658 [$136,769-$1,127,920], p = 0.04). TBIs were normalized for changing migration rates on the basis of Customs and Border Protection apprehensions. CONCLUSIONS This heightened risk of intracranial injury among vulnerable immigrant populations poses ethical and economic concerns to be addressed regarding border wall infrastructure.
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Affiliation(s)
| | | | | | - Carson P McCann
- 2School of Medicine, University of California, San Diego; and
| | - Arvin R Wali
- 1Department of Neurosurgery, University of California, San Diego
| | - Javier Bravo
- 3Department of Surgery, Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, University of California, San Diego, California
| | - Laura N Godat
- 3Department of Surgery, Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, University of California, San Diego, California
| | - Jay J Doucet
- 3Department of Surgery, Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, University of California, San Diego, California
| | - Todd W Costantini
- 3Department of Surgery, Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, University of California, San Diego, California
| | | | - Joseph D Ciacci
- 1Department of Neurosurgery, University of California, San Diego
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14
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Tenorio A, Brandel MG, Produturi GR, McCann CP, Wali AR, Bravo Quintana J, Doucet JJ, Costantini TW, Ciacci JD. Novel association of blunt cerebrovascular injuries with the San Diego-Mexico border wall height extension. World Neurosurg 2023:S1878-8750(23)00908-7. [PMID: 37419313 DOI: 10.1016/j.wneu.2023.06.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 07/09/2023]
Abstract
BACKGROUND The San Diego-Mexico border wall height extension is associated with increased traumatic injuries and related costs after wall falls. We report previous trends and a neurological injury type not previously associated with border falls: blunt cerebrovascular injuries (BCVIs). METHODS In this retrospective cohort study, patients who presented to the UC San Diego Health Trauma Center for injuries from border wall falls from 2016-2021 were considered. Patients were included if they were admitted in the pre-height extension period (January 2016-May 2018) or post-height extension period (June 2018-December 2021). Demographics, clinical data, and hospital stay data were compared. RESULTS We identified 383 patients, 51 (68.6% male; mean age 33.5 years) in the pre-height extension cohort and 332 (77.1% male; mean age 31.5 years) in the post-height extension cohort. There were 0 and 5 BCVIs in the pre-height and post-height extension groups respectively. BCVIs were associated with increased injury severity scores (9.16 vs 31.33; p<0.001), median ICU length of stay (0 [IQR 0-3] vs 5 [IQR 2-21]; p=0.022), and total hospital charges ($163,490 [IQR $86,578, $282,036] vs $835,260 [IQR $171,049, $1,933,996]; p=0.048). Poisson modeling found BCVI admissions were 0.21 (95%CI 0.07-0.41; p=0.042) per month higher post-height extension. CONCLUSIONS We review the injuries correlated with the border wall extension and reveal an association with rare, potentially devastating BCVIs that were not seen before the border wall modifications. These BCVIs and associated morbidity shed light on the trauma increasingly found at the southern US border, which may be informative for future infrastructure policy decisions.
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Affiliation(s)
- Alexander Tenorio
- Department of Neurosurgery, University of California, San Diego, San Diego, CA.
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, San Diego, CA
| | | | - Carson P McCann
- School of Medicine, University of California, San Diego, San Diego, CA
| | - Arvin R Wali
- Department of Neurosurgery, University of California, San Diego, San Diego, CA
| | - Javier Bravo Quintana
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego, CA
| | - Jay J Doucet
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego, CA
| | - Todd W Costantini
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego, CA
| | - Joseph D Ciacci
- Department of Neurosurgery, University of California, San Diego, San Diego, CA
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15
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Rennert RC, Brandel MG, Budohoski KP, Twitchell S, Fredrickson VL, Grandhi R, Couldwell WT. Influence of Patient and Technical Variables on Combined Direct and Indirect Cerebral Revascularization: Case Series. Oper Neurosurg (Hagerstown) 2023; 24:610-618. [PMID: 36786755 DOI: 10.1227/ons.0000000000000618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 11/05/2022] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND Cerebral bypass for flow augmentation is an important technique for selected neurosurgical patients, with multiple techniques used (direct, indirect, or combined). OBJECTIVE To assess the impact of patient and technical variables on direct and indirect bypass flow after combined revascularization. METHODS This was a retrospective, single-institution review of patients undergoing direct superficial temporal artery-to-middle cerebral artery bypass with indirect encephaloduro-myosynangiosis for moyamoya disease and steno-occlusive cerebrovascular disease over a 2-year period. We evaluated the effect of baseline patient characteristics, preoperative imaging characteristics, and operative variables on direct and indirect patency grades. RESULTS Twenty-six hemispheres (8 moyamoya disease and 18 steno-occlusive cerebrovascular disease) in 23 patients were treated with combined revascularization. The mean patient age was 53.4 ± 19.1 years. Direct bypass patency was 96%. Over a mean follow-up of 8.3 ± 5.4 months, there were 3 strokes in the treated hemispheres (11.5%). The mean modified Rankin Scale score improved from 1.3 ± 1.1 preoperatively to 0.7 ± 0.8 postoperatively. Preservation of the nondonor superficial temporal artery branch was associated with a lower direct bypass grade ( P < .01), whereas greater mean time to maximum perfusion (Tmax)> 4 and >6 seconds and mismatch volumes were associated with higher direct bypass grades ( P < .05). Tmax >4-second volume inversely predicted indirect bypass patency. CONCLUSION Patient and technical variables may influence the relative contributions of the direct and indirect components of combined revascularizations.
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Affiliation(s)
- Robert C Rennert
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Michael G Brandel
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Karol P Budohoski
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Spencer Twitchell
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Vance L Fredrickson
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Ramesh Grandhi
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - William T Couldwell
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
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16
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Brandel MG, Plonsker JH, Khan UA, Rennert RC, Friedman RA, Schwartz MS. Going the distance in acoustic neuroma resection: microsurgical outcomes at high-volume centers of excellence. J Neurooncol 2023; 163:105-114. [PMID: 37084124 DOI: 10.1007/s11060-023-04313-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/11/2023] [Indexed: 04/22/2023]
Abstract
PURPOSE High-volume hospitals are associated with improved surgical outcomes for acoustic neuromas (ANs). Due to the benign and slow-growing nature of ANs, many patients travel to geographically distant cities, states, or countries for their treatment. However, the impact of travel burden to high-volume centers, as well as its relative benefit are poorly understood. We compared post-operative outcomes between AN patients that underwent treatment at local, low-volume hospitals with those that traveled long distances to high-volume hospitals. METHODS The National Cancer Database was used to analyze AN patients that underwent surgery (2004-2015). Patients in the lowest quartile of travel distance and volume (Short-travel/Low-Volume: STLV) were compared to patients in the highest quartile of travel distance and volume (Long-travel/High-Volume: LTHV). Only STLV and LTHV cases were included for analysis. RESULTS Of 13,370 cases, 2,408 met inclusion criteria. STLV patients (n = 1,305) traveled a median of 6 miles (Interquartile range [IQR] 3-9) to low-volume centers (median 2, IQR 1-3 annual cases) and LTHV patients (n = 1,103) traveled a median of 143 miles [IQR 103-230, maximum 4,797] to high-volume centers (median 34, IQR 28-42 annual cases). LTHV patients had lower Charlson/Deyo scores (p = 0.001), mostly received care at academic centers (81.7% vs. 39.4%, p < 0.001), and were less likely to be minorities (7.0% vs. 24.2%, p < 0.001) or underinsured (4.2% vs. 13.8%, p < 0.001). There was no difference in average tumor size. On multivariable analysis, LTHV predicted increased likelihood of gross total resection (odds ratio [OR] 5.6, 95% confidence interval [CI] 3.8-8.4, p < 0.001), longer duration between diagnosis and surgery (OR 1.3, 95% CI 1.0-1.6, p = 0.040), decreased length of hospital stay (OR 0.5, 95% CI 0.4-0.7, p < 0.001), and greater overall survival (Hazard Ratio [HR] 0.6, 95% CI 0.4-0.95, p = 0.029). There was no significant difference in 30-day readmission on adjusted analysis. CONCLUSION Although traveling farther to high-volume centers was associated with greater time between diagnosis and treatment for AN patients, they experienced superior postoperative outcomes compared to patients who received treatment locally at low-volume centers. Enabling access and travel to high-volume centers may improve AN patient outcomes.
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Affiliation(s)
- Michael G Brandel
- Department of Neurological Surgery, University of California San Diego, San Diego, CA, USA
| | - Jillian H Plonsker
- Department of Neurological Surgery, University of California San Diego, San Diego, CA, USA
| | - Usman A Khan
- Department of Neurological Surgery, University of California San Diego, San Diego, CA, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, USA
| | - Rick A Friedman
- Department of Otolaryngology, University of California San Diego, San Diego, CA, USA
| | - Marc S Schwartz
- Department of Neurological Surgery, University of California San Diego, San Diego, CA, USA.
- Acoustic Neuroma Center, 9300 Campus Point Drive Mail Code 7893, La Jolla, CA, 92037, USA.
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17
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Sindewald RW, González HFJ, Brandel MG, Steinberg JA. Enlarging symptomatic arachnoid cyst in an elderly patient: illustrative case. J Neurosurg Case Lessons 2023; 5:CASE2379. [PMID: 37039295 PMCID: PMC10550536 DOI: 10.3171/case2379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 03/15/2023] [Indexed: 04/12/2023]
Abstract
BACKGROUND Arachnoid cysts are congenital or acquired structures found within the brain and are rarely symptomatic for adults. The literature documenting enlarging arachnoid cysts in adults is also discussed. OBSERVATIONS An elderly woman presented with acutely worsening headaches, photophobia, cognitive function, and a seizure-like episode. The patient had a known arachnoid cyst with a decade of radiographic stability, which was now idiopathically enlarging. The patient had a previous history of traumatic brain injuries but no reported trauma around the time of presentation. Due to the severity of midline shift and symptomatology, the decision was made to treat the patient surgically with fenestration and shunting. She recovered well postoperatively. LESSONS During the workup for a symptomatic elderly patient, enlargement of a previously asymptomatic arachnoid cyst should remain on the differential until specifically ruled out, even in the absence of recent trauma. While rare, enlarging arachnoid cysts result in neurological findings and impact the quality of life for patients.
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Brandel MG, Plonsker JH, Rennert R, Khan U, Nation J, Crawford JR, Levy ML. 347 Management of Rathke Cleft Cysts in Children: The Rady Children’s Hospital Approach. Neurosurgery 2023. [DOI: 10.1227/neu.0000000000002375_347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
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19
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Tenorio A, Brandel MG, Produturi G, McCann C, Costantini T, Doucet J, Ciacci JD. 625 The Impact of the Mexico-San Diego Border Wall Extension on Spinal Injuries. Neurosurgery 2023. [DOI: 10.1227/neu.0000000000002375_625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
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20
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Brandel MG, Goodwill VS, Park A, Snyder V, Schwartz MS. Sudden unexpected death from hydrocephalus due to cerebellopontine angle meningioma. J Neuropathol Exp Neurol 2023; 82:370-372. [PMID: 36864709 DOI: 10.1093/jnen/nlad014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, California, USA
| | - Vanessa S Goodwill
- Department of Pathology, University of California, San Diego, California, USA
| | - Anna Park
- County of San Diego Medical Examiner's Department, San Diego, California, USA
| | - Vivian Snyder
- County of San Diego Medical Examiner's Department, San Diego, California, USA
| | - Marc S Schwartz
- Department of Neurosurgery, University of California, San Diego, California, USA
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21
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Wali AR, Himstead A, Bravo J, Brandel MG, Hirshman BR, Pannell JS, Nguyen AD, Santiago-Dieppa DR. Helical coils augment embolization of the middle meningeal artery for treatment of chronic subdural hematoma: A technical note. J Cerebrovasc Endovasc Neurosurg 2023:jcen.2023.E2022.08.001. [PMID: 36632030 DOI: 10.7461/jcen.2023.e2022.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 12/02/2022] [Indexed: 01/13/2023] Open
Abstract
Embolization of the middle meningeal artery (MMA) is a safe and effective adjunct in the treatment of chronic subdural hematoma. While prior authors describe the use of coils to assist embolization by preventing reflux through eloquent collaterals, we de- scribe the use of coils to further open the MMA, allowing the administration of greater amounts of embolisate for a more robust embolization. The objective of this study was to demonstrate that helical coils can safely open the MMA following the administration of polyvinyl alcohol (PVA) particles. This allows for more embolisate to be administered into the MMA for more effective treatment. A retrospective review was conducted at our institution including intraoperative images and postoperative clinical and radiographic follow up. Failure rates using MMA embolization with PVA and helical coil augmentation were compared to failure rates in the literature of MMA embolization with PVA or ethylene vinyl-alcohol copolymer alone. A total of 8 cases were reviewed in which this technique was implemented. There were no immediate complications after treatment. All patients that underwent helical coil embolization following the administration of PVA had increased amount of embolisate delivered into the MMA. All patients at follow up had resolution of the subdural hematoma on outpatient imaging. Helical coil embolization allows for more embolisate administration into the MMA and provides a technical advantage for patients that fail traditional techniques of embolization. Case series are taking place to further test this hypothesis and identify the ideal patient population that may gain maximal yield from this novel technique.
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Affiliation(s)
- Arvin R Wali
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Alexander Himstead
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Javier Bravo
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Michael G Brandel
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Brian R Hirshman
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - J Scott Pannell
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Andrew D Nguyen
- Department of Neurological Surgery, University of California, San Diego, CA, USA
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Brandel MG, Gupta M, Pannell JS, Schwartz MS. Spontaneous chronic subdural haematoma due to hypoplastic rostral superior sagittal sinus. BMJ Case Rep 2022; 15:15/12/e252016. [PMID: 36585051 PMCID: PMC9809270 DOI: 10.1136/bcr-2022-252016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The superior sagittal sinus (SSS) is a midline structure of the superficial cerebral venous system that drains the anterior cerebral hemispheres. Hypoplasia of the rostral SSS is a known variant, although associated complications are rare. A woman in her 30s presented for evaluation of a symptomatic left-sided acoustic neuroma and was found to have an incidental chronic subdural haematoma (SDH) over the left frontoparietal convexity without trauma or precipitating event. The SDH expanded on serial imaging and the patient eventually underwent left-sided frontoparietal craniotomy for haematoma evacuation. Haematological evaluation was benign, but angiography revealed absence of the anterior half of the SSS. We report the first case of spontaneous SDH in the setting of hypoplastic rostral SSS.
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Affiliation(s)
| | - Mihir Gupta
- Neurosurgery, UCSD, La Jolla, California, USA
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23
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Tenorio A, Brandel MG, Produturi GR, McCann CP, Doucet JJ, Costantini TW, Ciacci JD. The impact of the Mexico-San Diego border wall extension on spine injuries: a retrospective cohort review. J Travel Med 2022; 29:6722606. [PMID: 36165623 DOI: 10.1093/jtm/taac112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/08/2022] [Accepted: 09/21/2022] [Indexed: 11/14/2022]
Abstract
BACKGROUND The recent San Diego-Mexico border wall height extension has resulted in an increased injury risk for unauthorized immigrants falling from greater heights. However, the effects of the border wall extension on frequency and morbidity of spinal injuries and related economic costs have yet to be highlighted. METHODS We retrospectively compared two cohorts who presented to the UC San Diego Health Trauma Center for border wall falls: pre-height extension (12 patients; January 2016-May 2018), and post-height extension (102 patients; January 2020-December 2021). Patients presented during border wall construction (June 2018-December 2019) were excluded. Demographics, clinical data and hospital costs were collected. Spinal injuries were normalized using Customs and Border Protection apprehensions. Costs were adjusted for inflation using the 2021 medical care price index. RESULTS The increase in spine injuries per month (0.8-4.25) and operative spine injuries per month (0.3- 1.7) was statistically significant (P < 0.001). Increase in median length of stay from 6 [interquartile range (IQR) 2-7] to 9 days (IQR 6-13) was statistically significant (P = 0.006). Median total hospital charges increased from $174 660 to $294 421 and was also significant (P < 0.001). CONCLUSION The data support that the recent San Diego-Mexico border wall extension is correlated with more frequent, severe and costly spinal injuries. This current infrastructure should be re-evaluated as border-related injuries represent a humanitarian and public health crisis.
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Affiliation(s)
- Alexander Tenorio
- Department of Neurosurgery, University of California, San Diego, San Diego, CA, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, San Diego, CA, USA
| | - Gautam R Produturi
- School of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Carson P McCann
- School of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Jay J Doucet
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego, CA, USA
| | - Todd W Costantini
- Division of Trauma, Surgical Critical Care, Burns and Acute Care Surgery, Department of Surgery, University of California, San Diego, San Diego, CA, USA
| | - Joseph D Ciacci
- Department of Neurosurgery, University of California, San Diego, San Diego, CA, USA
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24
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Azab M, Gamboa N, Nadel J, Cutler C, Henson JC, Lucke-Wold B, Panther E, Brandel MG, Khalessi AA, Rennert RC, Menacho ST, Mazur MD, Karsy M. Case Series and Systematic Review of Electronic Scooter Crashes and Severe Traumatic Brain Injury. World Neurosurg 2022; 167:e184-e195. [PMID: 35944858 DOI: 10.1016/j.wneu.2022.07.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 10/31/2022]
Abstract
OBJECTIVE Electric scooters (e-scooters) are an increasingly popular form of transportation, but their use has also resulted in increased incidence of traumatic brain injury (TBI). Previous reports have predominantly described mild TBI with limited attention to other injury patterns. Our objective was to evaluate the impact of e-scooter use on rates of severe TBI. METHODS We performed a multicenter retrospective case review of patients who presented with severe TBI (Glasgow Coma Scale score 3-8) related to e-scooter use and undertook a systematic literature review to identify other reports of severe TBI related to e-scooter use. RESULTS Of the 19 patients (mean age, 38 ± 16 years; 73.7% male) included in the case series, 13 (68.4%) experienced a fall and 6 (31.6%) were involved in a collision. Various cerebral injury patterns, associated craniofacial fractures, and cervical spine injuries were also seen. Twelve patients (63.2%) underwent intracranial pressure monitor placement and 6 (31.6%) underwent a decompressive hemicraniectomy. Most patients (n = 12; 63.2%) were discharged to acute rehabilitation, with a median modified Rankin Scale score of 2 at 4.9 ± 7.7 months follow-up (52.6% had a good outcome of modified Rankin Scale score ≤2), but 4 patients died of primary injuries. The systematic review identified 18 studies with 77,069 patients between 2019 and 2021, with 37 patients who required intensive care and 6 patients who had neurosurgical intervention. CONCLUSIONS Severe TBI after e-scooter use is associated with high morbidity and is likely underdiagnosed in the literature. Awareness and public policies may be helpful to reduce the impact of injury.
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Affiliation(s)
- Mohammad Azab
- Department of Biological Sciences, Boise State University, Boise, Idaho, USA
| | - Nicholas Gamboa
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Jeffrey Nadel
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Christopher Cutler
- Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | | | - Brandon Lucke-Wold
- Department of Neurosurgery, University of Florida, Gainesville, Florida, USA
| | - Eric Panther
- Department of Neurosurgery, University of Florida, Gainesville, Florida, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California-San Diego, San Diego, USA
| | | | - Robert C Rennert
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Sarah T Menacho
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Marcus D Mazur
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Michael Karsy
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA.
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25
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Wiśniewski K, Brandel MG, Gonda DD, Crawford JR, Levy ML. Prognostic factors in diffuse leptomeningeal glioneuronal tumor (DLGNT): a systematic review. Childs Nerv Syst 2022; 38:1663-1673. [PMID: 35867118 DOI: 10.1007/s00381-022-05600-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/02/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Diffuse leptomeningeal glioneuronal tumor (DLGNT) is a rare tumor, first described by the WHO Classification of Central Nervous System Tumors in 2016. The clinical course is variable. Most tumors have low-grade histological findings although some may have more aggressive features. The goal of this systematic review was to identify prognostic factors for poor overall survival (OS). MATERIAL AND METHODS We performed a systematic review using three databases (PubMed, Google Scholar, and Embase) and the following search terms: diffuse leptomeningeal glioneuronal tumor, DLGNT, DLMGNT. Statistical analysis was performed using Statistica 13.3. RESULTS We included 34 reports in our review comprising 63 patients, published from 2016 to 2022. The median OS was 19 months (range: 12-51 months). Using multivariable Cox survival analysis, we showed that Ki-67 ≥ 7%, age > 9 years, symptoms of elevated intracranial pressure (ICP) at admission, and the presence of contrast-enhancing intraparenchymal tumor are associated with poor OS. Receiver operating characteristic (ROC) analysis identified Ki-67 ≥ 7% as a significant predictor of poor OS. CONCLUSIONS Signs or symptoms of increased ICP with imaging findings of diffuse leptomeningeal enhancement should raise suspicion for DLGNT. In our systematic review, Ki-67 ≥ 7% was the most important prognostic factor for OS in DLGNT. The presence of intraparenchymal tumor with contrast enhancement was thought to represent disease progression and, together with patient age, was associated with poor OS.
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Affiliation(s)
- Karol Wiśniewski
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA. .,Department of Neurosurgery and Neurooncology, Medical University of Lodz, Barlicki University Hospital, Kopcińskiego 22, 90-153, Lodz, Poland.
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - David D Gonda
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
| | - John R Crawford
- Neurosciences Institute and Division of Child Neurology, Children's Health of Orange County, Orange, CA, 92868, USA
| | - Michael L Levy
- Department of Neurosurgery, University of California, San Diego-Rady Children's Hospital, San Diego, CA, 92123, USA
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26
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Abstract
Chronic pain is a leading cause of disability in the United States. Limited efficacy associated with pharmacologic management and surgical interventions in refractory patients has led to further exploration of cognitive and behavioral interventions as both an adjunctive and primary therapeutic modality. Mindfulness-based meditation has shown to be effective in reducing pain in randomized studies of chronic pain patients as well as models of experimentally induced pain in healthy participants. These studies have revealed specific neural mechanisms which may explain both short-term and sustained pain relief associated with mindfulness-based interventions.
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Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, University of California, 200 W. Arbor Drive #8893, USA
| | - Christine Lin
- Department of Neurosurgery, University of California, 200 W. Arbor Drive #8893, USA
| | - Devon Hennel
- Department of Neurscience & Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | - Olga Khazen
- Department of Neurscience & Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | - Julie G Pilitsis
- Department of Biomedical Research, Florida Atlantic University, Boca Raton, Florida, USA
| | - Sharona Ben-Haim
- Department of Neurosurgery, University of California, 200 W. Arbor Drive #8893, USA.
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27
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Englar KM, Kordahi AM, Brandel MG, Santiago-Dieppa DR, Wali AR, Pham M, Barba D, Ciacci J, Rechnic M. Application of Antibiotic-Impregnated Polymethyl-Methacrylate Bone Cement for the Treatment of Infected Cranioplasties: Initial Experience. Ann Plast Surg 2022; 88:S357-S360. [PMID: 37740468 DOI: 10.1097/sap.0000000000003079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
BACKGROUND Management of infected cranioplasty implants remains a surgical challenge. Surgical debridement, removal of the infected implant, and prolonged antibiotic therapy are part of the acute management. In addition, cranioplasty removal poses the risk of dural tear. Reconstruction of the cranial defect is usually delayed for several months to years, increasing the difficulty due to soft tissue contraction and scarring. OBJECTIVE The aim of the study was to propose an alternative to delayed reconstruction in the face of infection with a dual purpose: treat the infection with a material which delivers antibiotic to the area (polymethyl-methacrylate antibiotic) and which functions as a temporary or permanent cranioplasty. METHODS We reviewed the records of 3 consecutive patients who underwent single-stage polymethyl-methacrylate antibiotic salvage cranioplasty. RESULTS All patients underwent debridement of infected tissue. Titanium mesh was placed over the bony defect. Polymethyl methacrylate impregnated with vancomycin and tobramycin was then spread over the plate and defect before closure. Patients also received extended treatment with systemic antimicrobials. Early outcomes have been encouraging for both cosmesis and treatment of infection. CONCLUSIONS Benefits of this treatment strategy include immediate reconstruction rather than staged procedures and delivery of high concentrations of antibiotics directly to the affected area in addition to systemic antibiotics.
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Affiliation(s)
- Kevin M Englar
- From the Division of Plastic Surgery, University of Calfornia, San Diego
| | - Anthony M Kordahi
- From the Division of Plastic Surgery, University of Calfornia, San Diego
| | | | | | - Arvin R Wali
- Department of Neurosurgery, University of Calfornia, San Diego
| | - Martin Pham
- Department of Neurosurgery, University of Calfornia, San Diego
| | - David Barba
- Department of Neurosurgery, University of Calfornia, San Diego
| | - Joseph Ciacci
- Department of Neurosurgery, University of Calfornia, San Diego
| | - Mark Rechnic
- From the Division of Plastic Surgery, University of Calfornia, San Diego
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28
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Rennert RC, Brandel MG, Steinberg JA, Nation J, Couldwell WT, Fukushima T, Day JD, Khalessi AA, Levy ML. Maturation of the sella turcica and parasellar region: Surgical relevance for anterior skull base approaches in pediatric patients. Clin Neurol Neurosurg 2022; 215:107168. [PMID: 35247690 DOI: 10.1016/j.clineuro.2022.107168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/13/2022] [Accepted: 02/02/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Traditional and extended transnasal transsphenoidal approaches provide direct access to a variety of anterior skull base pathologies. Despite increased utilization of transnasal approaches in children, anatomic studies on pediatric skull base maturation are limited. We herein perform a surgically relevant morphometric analysis of the sella and parasellar regions during pediatric maturation. METHODS Measurements of sellar length (SL), sellar depth (SDp), sellar diameter (SDm), interclinoid distance (ID), intercavernous distance (ICD), and the presence of sphenoid sinus pneumatization (SSP), and sphenoid sinus type (SST) were made on thin-cut CT scans from 60 patients (evenly grouped by ages 0-3, 4-7, 8-11 12-15, 16-18, and >18 years) for analysis. Data were analyzed by sex and age groups using t-tests and linear regression. RESULTS Sella and parasellar parameters did not differ by sex. SL steadily increased from 8.5 ± 1.2 mm to 11.5 ± 1.6 mm throughout development. SDp and SDm increased from 6.0 ± 0.9 mm to 9.3 ± 1.4 mm and 9.0 ± 1.6 mm to 14.4 ± 1.8 mm during maturation, with significant interval growth from ages 16-18 to adult (p < 0.01). ID displayed significant growth from ages 0-3 to 4-7 (18.0 ± 2.4 mm to 20.7 ± 1.9 mm; p = 0.002) and ICD from ages 0-3 to 8-11 (12.0 ± 1.8 mm to 13.5 ± 2.1 mm; p < 0.001), without further significant interval growth. SSP was not seen in patients < 3, but was 100% by ages 8-11. SSTs progressed from conchal/presellar (60% at ages 4-7) to sellar/postsellar (80% at adulthood). CONCLUSION The sella and parasellar regions have varied growth patterns with development. Knowledge of the expected maturation of key anterior skull base structures may augment surgical planning in younger patients.
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Affiliation(s)
- Robert C Rennert
- Department of Neurological Surgery, University of California, San Diego, La Jolla, CA, United States
| | - Michael G Brandel
- Department of Neurological Surgery, University of California, San Diego, La Jolla, CA, United States
| | - Jeffrey A Steinberg
- Department of Neurological Surgery, University of California, San Diego, La Jolla, CA, United States
| | - Javan Nation
- Department of Head and Neck Surgery, University California San Diego, San Diego, CA, United States
| | - William T Couldwell
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, United States
| | | | - John D Day
- Department of Neurosurgery, University of Arkansas, Little Rock, AR, United States
| | - Alexander A Khalessi
- Department of Neurological Surgery, University of California, San Diego, La Jolla, CA, United States
| | - Michael L Levy
- Department of Neurosciences and Pediatrics, University of California San Diego, San Diego, CA, United States.
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29
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Brandel MG, Rennert R, Steinberg J, Gonda DD, Levy ML. 375 Volume-Outcome Relationships in Pediatric Neurosurgery: An Analysis of the Kids’ Inpatient Database. Neurosurgery 2022. [DOI: 10.1227/neu.0000000000001880_375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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30
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Rennert RC, Brandel MG, Steinberg JA, Gonda DD, Friedman RA, Fukushima T, Day JD, Khalessi AA, Levy ML. Maturation of the anterior petrous apex: surgical relevance for performance of the middle fossa transpetrosal approach in pediatric patients. J Neurosurg 2021:1-7. [PMID: 34534955 DOI: 10.3171/2021.3.jns202648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 03/24/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The middle fossa transpetrosal approach to the petroclival and posterior cavernous sinus regions includes removal of the anterior petrous apex (APA), an area well studied in adults but not in children. To this end, the authors performed a morphometric analysis of the APA region during pediatric maturation. METHODS Measurements of the distance from the clivus to the internal auditory canal (IAC; C-IAC), the distance of the petrous segment of the internal carotid artery (petrous carotid; PC) to the mesial petrous bone (MPB; PC-MPB), the distance of the PC to the mesial petrous apex (MPA; PC-MPA), and the IAC depth from the middle fossa floor (IAC-D) were made on thin-cut CT scans from 60 patients (distributed across ages 0-3, 4-7, 8-11, 12-15, 16-18, and > 18 years). The APA volume was calculated as a cylinder using C-IAC (length) and PC-MPB (diameter). APA pneumatization was noted. Data were analyzed by laterality, sex, and age. RESULTS APA parameters did not differ by laterality or sex. APA pneumatization was seen on 20 of 60 scans (33.3%) in patients ≥ 4 years. The majority of the APA region growth occurred by ages 8-11 years, with PC-MPA and PC-MPB increasing 15.9% (from 9.4 to 10.9 mm, p = 0.08) and 23.5% (from 8.9 to 11.0 mm, p < 0.01) between ages 0-3 and 8-11 years, and C-IAC increasing 20.7% (from 13.0 to 15.7 mm, p < 0.01) between ages 0-3 and 4-7 years. APA volume increased 79.6% from ages 0-3 to 8-11 years (from 834.3 to 1499.2 mm3, p < 0.01). None of these parameters displayed further significant growth. Finally, IAC-D increased 51.1% (from 4.3 to 6.5 mm, p < 0.01) between ages 0-3 and adult, without significant differences between successive age groups. CONCLUSIONS APA development is largely complete by the ages of 8-11 years. Knowledge of APA growth patterns may aid approach selection and APA removal in pediatric patients.
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Affiliation(s)
- Robert C Rennert
- 1Department of Neurological Surgery, University of California, San Diego, La Jolla
| | - Michael G Brandel
- 1Department of Neurological Surgery, University of California, San Diego, La Jolla
| | - Jeffrey A Steinberg
- 1Department of Neurological Surgery, University of California, San Diego, La Jolla
| | - David D Gonda
- 2Department of Neurosciences and Pediatrics, University of California, San Diego, San Diego
| | - Rick A Friedman
- 3Department of Surgery, Division of Otolaryngology, Head and Neck Surgery, University of California, San Diego, La Jolla, California
| | | | - John D Day
- 5Department of Neurosurgery, University of Arkansas, Little Rock, Arkansas
| | - Alexander A Khalessi
- 1Department of Neurological Surgery, University of California, San Diego, La Jolla
| | - Michael L Levy
- 2Department of Neurosciences and Pediatrics, University of California, San Diego, San Diego
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31
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Chandra A, Brandel MG, Wadhwa H, Pereira MP, Lewis CT, Haddad YW, Lu VM, Almeida ND, Nuru MO, Esquenazi Y, Aghi MK. Geographic landscape of foreign medical graduates in US neurosurgery training programs from 2007 to 2017. Clin Neurol Neurosurg 2021; 209:106891. [PMID: 34492549 DOI: 10.1016/j.clineuro.2021.106891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 07/27/2021] [Accepted: 08/08/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Although foreign medical graduates (FMGs) have been essential to the US physician workforce, the increasing competitiveness has made it progressively challenging for FMGs to match in US neurosurgery programs. We describe geographic origins and characteristics associated with successful match into US neurosurgery training programs. METHODS Retrospective review of AANS membership data (2007-2017). Scopus was used to collect bibliometrics. RESULTS From 2009 neurosurgical residents, 165 (8.2%) were FMGs. Most were male (n = 148; 89.6%) with a median age of 34.0 years. Top six feeder countries (TFC) included India (13.9%; n = 23), Lebanon and Pakistan (9.1%; n = 15), Caribbean Region (7.2%; n = 12), Mexico (6.67%; n = 11), and Greece (3.6%; n = 6). Compared to FMGs from non-top feeder countries (NTFC), TFC FMGs had higher H-indices (2 vs 4, p = 0.049), greater number of publications (2 vs 5, p = 0.04), were more likely to have an MBBS/MBBCh (n = 38 vs n = 17, p = 0.03), and had twice as many candidates from major feeder medical schools that successfully matched into a US neurosurgery program (n = 43 vs NTFC = 20, p < 0.001). NTFC FMGs were almost 3-times more likely to match at an affiliated neurosurgery program (8 vs TFC = 3, p = 0.03), while TFC FMGs were 1.5-times more likely to match at an NIH Top-40 program (33 vs NTFC = 21, p = 0.03). CONCLUSIONS TFC graduates have higher bibliometrics, frequently come from major feeder schools, and have greater match success at a broader selection of programs and NIH top-40 programs. Future studies characterizing FMG country and medical school origins may enable foreign students to geographically target institutions of interest and could allow US programs to better evaluate foreign training environments.
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Affiliation(s)
- Ankush Chandra
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94131, USA; Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA; School of Medicine, Wayne State University, Detroit, MI, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - Harsh Wadhwa
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94131, USA
| | - Matheus P Pereira
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94131, USA
| | - Cole T Lewis
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Yazeed W Haddad
- School of Medicine, Wayne State University, Detroit, MI, USA
| | - Victor M Lu
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Neil D Almeida
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94131, USA
| | - Mohammed O Nuru
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94131, USA
| | - Yoshua Esquenazi
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Manish K Aghi
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94131, USA.
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32
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Rennert RC, Brandel MG, Srinivas S, Prajapati D, Al Jammal OM, Brown NJ, Diaz-Aguilar LD, Elster J, Gonda DD, Crawford JR, Levy ML. Palliative endoscopic third ventriculostomy for pediatric primary brain tumors: a single-institution case series. J Neurosurg Pediatr 2021; 28:387-394. [PMID: 34359046 DOI: 10.3171/2021.3.peds20952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 03/29/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Children with nonoperative brain tumors, such as diffuse intrinsic pontine gliomas (DIPGs), often have life-threatening hydrocephalus. Palliative shunting is common in such cases but can be complicated by hardware infection and mechanical failure. Endoscopic third ventriculostomy (ETV) is a minimally invasive alternative to treat hydrocephalus without implanted hardware. Herein, the authors report their institutional experience with palliative ETV for primary pediatric brain tumors. METHODS The authors conducted a retrospective review of consecutive patients who had undergone palliative ETV for hydrocephalus secondary to nonresectable primary brain tumors over a 10-year period at Rady Children's Hospital. Collected variables included age, sex, tumor type, tumor location, presence of leptomeningeal spread, use of a robot for ETV, complications, ETV Success Score (ETVSS), functional status, length of survival, and follow-up time. A successful outcome was defined as an ETV performed without clinically significant perioperative complications or secondary requirement for a new shunt. RESULTS Fifteen patients met the study inclusion criteria (11 males, 4 females; average age 7.9 years, range 0.8-21 years). Thirteen patients underwent manual ETV, and 2 patients underwent robotic ETV. Preoperative symptoms included gaze palsy, nausea/vomiting, headache, lethargy, hemiparesis, and seizures. Tumor types included DIPG (3), intraventricular/thalamic glioblastoma (2), and leptomeningeal spread of medulloblastoma (2), anaplastic oligo-/astrocytoma (2), rhabdoid tumor (2), primitive neuroectodermal tumor (1), ganglioglioma (1), pineoblastoma (1), and embryonal carcinoma (1). The mean preoperative ETVSS was 79 ± 8.8. There was 1 perioperative complication, a wound breakdown consistent with refractory hydrocephalus. The mean follow-up was 4.9 ± 5.5 months overall, and mean survival for the patients who died was 3.2 ± 3.6 months. Two patients remained alive at a mean follow-up of 15.7 months. Palliative ETV was successful in 7 patients (47%) and unsuccessful in 8 (53%). While patients with successful ETV were significantly older (11.9 ± 5.6 vs 4.4 ± 4.1 years, p = 0.010), there were no significant differences in preoperative ETVSS (p = 0.796) or postoperative survival (p = 0.476) between the successful and unsuccessful groups. Overall, functional outcomes were similar between the two groups; there was no significant difference in posttreatment Karnofsky Performance Status scores (68.6 ± 19.5 vs 61.3 ± 16.3, p = 0.454), suggesting that including ETV in the treatment algorithm did not worsen outcomes. CONCLUSIONS Palliative ETV is a safe and potentially efficacious treatment option in selected pediatric patients with hydrocephalus from nonoperative brain tumors. Close follow-up, especially in younger children, is required to ensure that patients with refractory symptoms receive appropriate secondary CSF diversion.
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Affiliation(s)
| | | | | | | | | | | | | | - Jennifer Elster
- 3Pediatrics, University of California San Diego, La Jolla; and.,4Rady Children's Hospital, San Diego, California
| | - David D Gonda
- Departments of1Neurological Surgery and.,2Neurosciences, and
| | - John R Crawford
- 2Neurosciences, and.,3Pediatrics, University of California San Diego, La Jolla; and
| | - Michael L Levy
- Departments of1Neurological Surgery and.,2Neurosciences, and
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Rennert RC, Brandel MG, Stephens ML, Rodriguez A, Morris TW, Day JD. Surgical Relevance of the Suprameatal Tubercle During Superior Petrosal Vein-Sparing Trigeminal Nerve Microvascular Decompression. Oper Neurosurg (Hagerstown) 2021; 20:E410-E416. [PMID: 33647963 DOI: 10.1093/ons/opab046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 12/25/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND An enlarged suprameatal tubercle (SMT) can obscure visualization of the trigeminal nerve and require removal during microvascular decompression (MVD) surgery, especially when the superior petrosal vein (SPV) complex is preserved. OBJECTIVE To define the incidence and important variables affecting the need for SMT removal with an SPV-sparing trigeminal nerve MVD. METHODS Retrospective single-institution review identified patients who underwent a first-time, SPV-sparing MVD for trigeminal neuralgia (TGN) over a 26-mo period. SMT length (SMT-L), SMT width (SMT-W), and peri-trigeminal cerebellopontine cisternal thickness (CT) were measured from axial high-resolution magnetic resonance images. Need for SMT removal and use of endoscopic assistance was recorded. Data were analyzed using unpaired t-tests, and receiver operating characteristic (ROC)/area under the curve testing. RESULTS A total of 43 MVD surgeries for TGN on 42 patients (mean age 52.7 ± 14.4 yr) were analyzed. Mean SMT-L, SMT-W, and CT were 9.8 ± 1.6, 2.0 ± 0.8, and 4.2 ± 1.5 mm, respectively. SMT removal via drilling was required in 4/43 cases (9.3%). Endoscopic assistance was used in 3 cases (2 SMT removed and 1 SMT preserved). SMT-W was the biggest predictor of the need for SMT removal on ROC analysis (area under the curve 0.97, 0.92-1.0 95% CI). The combined thresholds of SMT-W ≥ 3.2 mm and CT ≤ 3.5 mm demonstrated 100% sensitive and 100% specificity for the need to remove the SMT on optimal cutoff analysis. CONCLUSION SMT drilling is necessary in nearly 10% of SPV-sparing MVDs for TGN. The combination of SMT width and cerebellopontine cistern thickness is predictive of the need for SMT removal.
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Affiliation(s)
- Robert C Rennert
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Michael G Brandel
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Marcus L Stephens
- Department of Neurological Surgery, University of Arkansas, Little Rock, Arkansas, USA
| | - Analiz Rodriguez
- Department of Neurological Surgery, University of Arkansas, Little Rock, Arkansas, USA
| | - Thomas W Morris
- Department of Neurological Surgery, University of Arkansas, Little Rock, Arkansas, USA
| | - J D Day
- Department of Neurological Surgery, University of Arkansas, Little Rock, Arkansas, USA
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Rennert RC, Brandel MG, Steinberg JA, Martin JR, Gonda DD, Fukushima T, Day JD, Khalessi AA, Levy ML. Surgical Relevance of Pediatric Anterior Clinoid Process Maturation for Anterior Skull Base Approaches. Oper Neurosurg (Hagerstown) 2021; 20:E200-E207. [PMID: 33372959 DOI: 10.1093/ons/opaa374] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/06/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Removal of the anterior clinoid process (ACP) can expand anterior skull base surgical corridors. ACP development and anatomical variations are poorly defined in children. OBJECTIVE To perform a morphometric analysis of the ACP during pediatric maturation. METHODS Measurements of ACP base thickness (ACP-BT), midpoint thickness (ACP-MT), length (ACP-L), length from optic strut to ACP tip (ACP-OS), pneumatization (ACP-pneumo), and the presence of an ossified carotico-clinoid ligament (OCCL) or interclinoid ligament (OIL) were made from high-resolution computed-tomography scans from 60 patients (ages 0-3, 4-7, 8-11 12-15, 16-18, and >18 yr). Data were analyzed by laterality, sex, and age groups using t-tests and linear regression. RESULTS There were no significant differences in ACP parameters by laterality or sex, and no significant growth in ACP-BT or ACP-MT during development. From ages 0-3 yr to adult, mean ACP-L increased 49%, from 7.7 to 11.5 mm. The majority of ACP-L growth occurred in 2 phases between ages 0-3 to 8-11 and ages 16-18 to adult. Conversely, ACP-OS was stable from ages 0-3 to 8-11 but increased by 63% between ages 8-11 to adult. Variations in ACP morphology (OCCL/OIL/ACP-pneumo) were found in 15% (9/60) of scans. OCCL and OIL occurred in patients as young as 3 yrs, whereas ACP-pneumo was not seen in patients younger than 11 yrs. CONCLUSION The ACP demonstrates stable thickness and a complex triphasic elongation and remodeling pattern with development, the understanding of which may facilitate removal in patients <12. Clinically relevant ACP anatomic variations can occur at any age.
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Affiliation(s)
- Robert C Rennert
- Department of Neurological Surgery, University of California, San Diego, La Jolla, California
| | - Michael G Brandel
- Department of Neurological Surgery, University of California, San Diego, La Jolla, California
| | - Jeffrey A Steinberg
- Department of Neurological Surgery, University of California, San Diego, La Jolla, California
| | - Joel R Martin
- Department of Neurological Surgery, University of California, San Diego, La Jolla, California
| | - David D Gonda
- Department of Neurosciences and Pediatrics, University of California, San Diego, San Diego, California
| | | | - John D Day
- Department of Neurosurgery, University of Arkansas, Little Rock, Arkansas
| | - Alexander A Khalessi
- Department of Neurological Surgery, University of California, San Diego, La Jolla, California
| | - Michael L Levy
- Department of Neurosciences and Pediatrics, University of California, San Diego, San Diego, California
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Kamel GN, Carbulido MK, McKee RM, Segal RM, Ewing E, Brandel MG, Lance SH, Gosman AA. Analysis of Actual Versus Predicated Intracranial Volume Changes for Distraction Osteogenesis Using Virtual Surgical Planning in Patients With Craniosynostosis. Ann Plast Surg 2021; 86:S374-S378. [PMID: 33625026 DOI: 10.1097/sap.0000000000002759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION The primary outcome metric in patients with craniosynostosis are changes in intracranial volumes (ICVs). In patients who undergo distraction osteogenesis (DO) to treat craniosynostosis, changes are also dependent on the length of distraction. Virtual surgical planning (VSP) has been used to predict anticipated changes in ICV during cranial vault reconstruction. The purpose of this study is to analyze the actual versus predicted ICV changes using VSP in patients who undergo DO for craniosynostosis management. METHODS All patients with craniosynostosis treated with DO at a single institution, Rady Children's Hospital, between December 2013 and May 2019 were identified. Inclusion criteria are as follows: VSP planning with predicted postoperative ICV values and preoperative and postdistraction CT scans to quantify ICV. Postoperative ICV and VSP-estimated ICV were adjusted for age-related ICV growth. The primary outcome measure calculated was age-adjusted percent volume change per millimeter distraction (PVCPD), and results were analyzed using paired Wilcoxon signed rank tests. RESULTS Twenty-seven patients underwent DO for cranial vault remodeling. Nineteen patients were nonsyndromic, and 8 patients were syndromic. The median postoperative PVCPD was 0.30%/mm, and the median VSP-estimated PVCPD was 0.36% per millimeter (P < 0.001). A subanalysis of nonsyndromic patients showed a median postoperative PVCPD of 0.29%/mm in nonsyndromic patients that differed significantly from the VSP estimate of 0.34%/mm (P = 0.003). There was also a significant difference in syndromic patients' observed PVCPD of 0.41%/mm versus VSP estimate of 0.79%/mm (P = 0.012). CONCLUSIONS Virtual surgical planning overestimates the change in ICV attributable to DO in both syndromic and nonsyndromic patients.
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Steinberg JA, Brandel MG, Kang KM, Rennert RC, Pannell JS, Olson SE, Gonda DD, Khalessi AA, Levy ML. Arteriovenous malformation surgery in children: the Rady Children's Hospital experience (2002-2019). Childs Nerv Syst 2021; 37:1267-1277. [PMID: 33404725 DOI: 10.1007/s00381-020-04994-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/30/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Compared to adult AVMs, there is a paucity of data on the microsurgical treatment of pediatric AVMs. We report our institutional experience with pediatric AVMs treated by microsurgical resection with or without endovascular embolization and radiation therapy. METHODS We retrospectively reviewed all patients ≤ 18 years of age with cerebral AVMs that underwent microsurgical resection at Rady Children's Hospital 2002-2019. RESULTS Eighty-nine patients met inclusion criteria. The mean age was 10.3 ± 5.0 years, and 56% of patients were male. In total, 72 (81%) patients presented with rupture. Patients with unruptured AVMs presented with headache (n = 5, 29.4%), seizure (n = 9, 52.9%), or incidental finding (n = 3, 17.7%). The mean presenting mRS was 2.8 ± 1.8. AVM location was lobar in 78%, cerebellar/brainstem in 15%, and deep supratentorial in 8%. Spetzler-Martin grade was I in 28%, II in 45%, III in 20%, IV in 6%, and V in 1%. Preoperative embolization was utilized in 38% of patients and more frequently in unruptured than ruptured AVMs (62% vs. 32%, p = 0.022). Radiographic obliteration was achieved in 76/89 (85.4%) patients. Complications occurred in 7 (8%) patients. Annualized rates of delayed rebleeding and recurrence were 1.2% and 0.9%, respectively. The mean follow-up was 2.8 ± 3.1 years. A good neurological outcome (mRS score ≤ 2) was obtained in 80.9% of patients at last follow-up and was improved relative to presentation for 75% of patients. CONCLUSIONS Our case series demonstrates high rates of radiographic obliteration and relatively low incidence of neurologic complications of treatment or AVM recurrence.
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Affiliation(s)
- Jeffrey A Steinberg
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - Keiko M Kang
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - J Scott Pannell
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - Scott E Olson
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - David D Gonda
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA.,Division of Pediatric Neurosurgery, Rady Children's Hospital, San Diego, CA, USA
| | - Alexander A Khalessi
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA
| | - Michael L Levy
- Department of Neurosurgery, University of California-San Diego, San Diego, CA, USA. .,Division of Pediatric Neurosurgery, Rady Children's Hospital, San Diego, CA, USA.
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Wali AR, Santiago-Dieppa DR, Srinivas S, Brandel MG, Steinberg JA, Rennert RC, Mandeville R, Murphy JD, Olson S, Pannell JS, Khalessi AA. Surgical revascularization for Moyamoya disease in the United States: A cost-effectiveness analysis. J Cerebrovasc Endovasc Neurosurg 2021; 23:6-15. [PMID: 33540961 PMCID: PMC8041505 DOI: 10.7461/jcen.2021.e2020.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 11/07/2020] [Indexed: 11/23/2022] Open
Abstract
Objective Moyamoya disease (MMD) is a vasculopathy of the internal carotid arteries with ischemic and hemorrhagic sequelae. Surgical revascularization confers upfront peri-procedural risk and costs in exchange for long-term protective benefit against hemorrhagic disease. The authors present a cost-effectiveness analysis (CEA) of surgical versus non-surgical management of MMD. Methods A Markov Model was used to simulate a 41-year-old suffering a transient ischemic attack (TIA) secondary to MMD and now faced with operative versus nonoperative treatment options. Health utilities, costs, and outcome probabilities were obtained from the CEA registry and the published literature. The primary outcome was incremental cost-effectiveness ratio which compared the quality adjusted life years (QALYs) and costs of surgical and nonsurgical treatments. Base-case, one-way sensitivity, two-way sensitivity, and probabilistic sensitivity analyses were performed with a willingness to pay threshold of $50,000. Results The base case model yielded 3.81 QALYs with a cost of $99,500 for surgery, and 3.76 QALYs with a cost of $106,500 for nonsurgical management. One-way sensitivity analysis demonstrated the greatest sensitivity in assumptions to cost of surgery and cost of admission for hemorrhagic stroke, and probabilities of stroke with no surgery, stroke after surgery, poor surgical outcome, and death after surgery. Probabilistic sensitivity analyses demonstrated that surgical revascularization was the cost-effective strategy in over 87.4% of simulations. Conclusions Considering both direct and indirect costs and the postoperative QALY, surgery is considerably more cost-effective than non-surgical management for adults with MMD.
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Affiliation(s)
- Arvin R Wali
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | | | - Shanmukha Srinivas
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Michael G Brandel
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Jeffrey A Steinberg
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Robert C Rennert
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Ross Mandeville
- Department of Neurology, University of California, San Diego, CA, USA
| | - James D Murphy
- Department of Radiation Medicine and Applied Sciences, University of California, San Diego, CA, USA
| | - Scott Olson
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - J Scott Pannell
- Department of Neurological Surgery, University of California, San Diego, CA, USA
| | - Alexander A Khalessi
- Department of Neurological Surgery, University of California, San Diego, CA, USA
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Goodwill VS, Brandel MG, Steinberg JA, Beaumont TL, Hansen LA. Hydrophilic polymer embolism identified in brain tumor specimens following Wada testing: A report of 2 cases. Free Neuropathol 2021; 2:2-23. [PMID: 37284639 PMCID: PMC10209854 DOI: 10.17879/freeneuropathology-2021-3457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 08/28/2021] [Indexed: 06/08/2023]
Abstract
Hydrophilic polymers are commonly used as coatings on intravascular medical devices. As intravascular procedures continue to increase in frequency, the risk of embolization of this material throughout the body has become evident. These emboli may be discovered incidentally but can result in serious complications including death. Here, we report the first two cases of hydrophilic polymer embolism (HPE) identified on brain tumor resection following Wada testing. One patient experienced multifocal vascular complications and diffuse cerebral edema, while the other had an uneventful postoperative course. Wada testing is frequently performed during preoperative planning prior to epilepsy surgery or the resection of tumors in eloquent brain regions. These cases demonstrate the need for increased recognition of this histologic finding to enable further correlation with clinical outcomes.
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Affiliation(s)
- Vanessa S Goodwill
- Department of Pathology, University of California, San Diego United States
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego United States
| | - Jeffrey A Steinberg
- Department of Neurosurgery, University of California, San Diego United States
| | - Thomas L Beaumont
- Department of Neurosurgery, University of California, San Diego United States
| | - Lawrence A Hansen
- Department of Pathology, University of California, San Diego United States
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Wali AR, Ryba BE, Kang K, Santiago-Dieppa DR, Steinberg J, Diaz-Aguilar LD, Stone LE, Brandel MG, Longhurst CA, Taylor W, Khalessi AA. Impact of COVID-19 on a Neurosurgical Service: Lessons from the University of California San Diego. World Neurosurg 2020; 148:e172-e181. [PMID: 33385598 PMCID: PMC7772085 DOI: 10.1016/j.wneu.2020.12.103] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/25/2022]
Abstract
Background The institution-wide response of the University of California San Diego Health system to the 2019 novel coronavirus disease (COVID-19) pandemic was founded on rapid development of in-house testing capacity, optimization of personal protective equipment usage, expansion of intensive care unit capacity, development of analytic dashboards for monitoring of institutional status, and implementation of an operating room (OR) triage plan that postponed nonessential/elective procedures. We analyzed the impact of this triage plan on the only academic neurosurgery center in San Diego County, California, USA. Methods We conducted a de-identified retrospective review of all operative cases and procedures performed by the Department of Neurosurgery from November 24, 2019, through July 6, 2020, a 226-day period. Statistical analysis involved 2-sample z tests assessing daily case totals over the 113-day periods before and after implementation of the OR triage plan on March 16, 2020. Results The neurosurgical service performed 1429 surgical and interventional radiologic procedures over the study period. There was no statistically significant difference in mean number of daily total cases in the pre–versus post–OR triage plan periods (6.9 vs. 5.8 mean daily cases; 1-tail P = 0.050, 2-tail P = 0.101), a trend reflected by nearly every category of neurosurgical cases. Conclusions During the COVID-19 pandemic, the University of California San Diego Department of Neurosurgery maintained an operative volume that was only modestly diminished and continued to meet the essential neurosurgical needs of a large population. Lessons from our experience can guide other departments as they triage neurosurgical cases to meet community needs.
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Affiliation(s)
- Arvin R Wali
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | - Bryan E Ryba
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA.
| | - Keiko Kang
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | | | - Jeffrey Steinberg
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | | | - Lauren E Stone
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | - Christopher A Longhurst
- Department of Biomedical Informatics, University of California San Diego, La Jolla, California, USA
| | - William Taylor
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | - Alexander A Khalessi
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
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Chandra A, Brandel MG, Aghi MK. In Reply to the Letter to the Editor "Regarding the Path to U.S. Neurosurgical Residency for Foreign Medical Graduates: Trends from a Decade 2007-2017". World Neurosurg 2020; 143:625. [PMID: 33167149 DOI: 10.1016/j.wneu.2020.08.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 10/23/2022]
Affiliation(s)
- Ankush Chandra
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA; Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, La Jolla, California, USA
| | - Manish K Aghi
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA.
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Chandra A, Lopez-Rivera V, Dono A, Brandel MG, Lewis C, O'Connor KP, Sheth SA, Ballester LY, Aghi MK, Esquenazi Y. Comparative Analysis of Survival Outcomes and Prognostic Factors of Supratentorial versus Cerebellar Glioblastoma in the Elderly: Does Location Really Matter? World Neurosurg 2020; 146:e755-e767. [PMID: 33171326 DOI: 10.1016/j.wneu.2020.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/02/2020] [Accepted: 11/02/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Cerebellar glioblastomas (cGBMs) are rare tumors that are uncommon in the elderly. In this study, we compare survival outcomes and identify prognostic factors of cGBM compared with the supratentorial (stGBM) counterpart in the elderly. METHODS Data from the SEER 18 registries were used to identify patients with a glioblastoma (GBM) diagnosis between 2000 and 2016. The log-rank method and a multivariable Cox proportional hazards regression model were used for analysis. RESULTS Among 110 elderly patients with cGBM, the median age was 74 years (interquartile range [IQR], 69-79 years), 39% were female and 83% were white. Of these patients, 32% underwent gross total resection, 73% radiotherapy, and 39% chemotherapy. Multivariable analysis of the unmatched and matched cohort showed that tumor location was not associated with survival; in the unmatched cohort, insurance status (hazard ratio [HR], 0.11; IQR, 0.02-0.49; P = 0.004), gross total resection (HR, 0.53; IQR, 0.30-0.91; P = 0.022), and radiotherapy (HR, 0.33; IQR, 0.18-0.61; P < 0.0001) were associated with better survival. Patients with cGBM and stGBM undergoing radiotherapy (7 months vs. 2 months; P < 0.001) and chemotherapy (10 months vs. 3 months; P < 0.0001) had improved survival. Long-term mortality was lower for cGBM in the elderly at 24 months compared with the stGBM cohort (P = 0.007). CONCLUSIONS In our study, elderly patients with cGBM and stGBM have similar outcomes in overall survival, and those undergoing maximal resection with adjuvant therapies, independent of tumor location, have improved outcomes. Thus, aggressive treatment should be encouraged for cGBM in geriatric patients to confer the same survival benefits seen in stGBM. Single-institutional and multi-institutional studies to identify patient-level prognostic factors are warranted to triage the best surgical candidates.
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Affiliation(s)
- Ankush Chandra
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA; Department of Neurosurgery, Memorial Hermann Hospital-TMC, Houston, Texas, USA; Department of Neurological Surgery, University of California San Francisco, San Francisco, California, USA
| | - Victor Lopez-Rivera
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Antonio Dono
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA; Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California San Diego, La Jolla, California, USA
| | - Cole Lewis
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA; Department of Neurosurgery, Memorial Hermann Hospital-TMC, Houston, Texas, USA
| | - Kyle P O'Connor
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA; Department of Neurosurgery, Memorial Hermann Hospital-TMC, Houston, Texas, USA
| | - Sunil A Sheth
- Department of Neurosurgery, Memorial Hermann Hospital-TMC, Houston, Texas, USA; Department of Neurology, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Leomar Y Ballester
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA; Department of Neurosurgery, Memorial Hermann Hospital-TMC, Houston, Texas, USA; Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Manish K Aghi
- Department of Neurological Surgery, University of California San Francisco, San Francisco, California, USA
| | - Yoshua Esquenazi
- Department of Neurosurgery, Memorial Hermann Hospital-TMC, Houston, Texas, USA; Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA; Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, Texas, USA.
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Ravina K, Rennert RC, Brandel MG, Strickland BA, Chun A, Lee Y, Carey JN, Russin JJ. Comparative Assessment of Extracranial-to-Intracranial and Intracranial-to-Intracranial In Situ Bypass for Complex Intracranial Aneurysm Treatment Based on Rupture Status: A Case Series. World Neurosurg 2020; 146:e122-e138. [PMID: 33075570 DOI: 10.1016/j.wneu.2020.10.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Comparative outcomes of extracranial-to-intracranial (EC-IC) and intracranial-to-intracranial (IC-IC) bypass for complex aneurysm treatment based on rupture status are not well described in the literature. In this study, we compare outcomes of EC-IC and IC-IC bypass for complex intracranial aneurysm treatment based on rupture status. METHODS A prospective neurosurgical patient database was retrospectively reviewed. Sixty-three consecutive patients with aneurysm managed with revascularization were identified between July 2014 and December 2018. RESULTS During the study period, 41 patients with aneurysm underwent EC-IC bypass (65%; 24 [58.5%] ruptured, 17 [41.5%] unruptured) and 22 patients with aneurysm underwent IC-IC bypass (34.9%; 13 [59.1%] ruptured, 9 [40.9%] unruptured). Graft spasm occurred in 4 patients (9.8%) in the EC-IC group (all ruptured aneurysms) and all anastomoses were patent on immediate postoperative imaging. Perioperative mortality occurred in 5 patients who underwent EC-IC bypass (12.2%; 3 ruptured, 2 unruptured) EC-IC and 2 patients who underwent IC-IC bypass (9.1%; both ruptured); (P = 0.709). Bypass-related complications occurred only in patients with ruptured aneurysm (2 [8.3%] in the EC-IC group and 0 [0%] in the IC-IC group; P = 0.285). For unruptured aneurysms, the overall complication rate was lower in IC-IC compared with the EC-IC group (P = 0.006). Modified Rankin Scale scores on discharge were significantly lower in IC-IC compared with EC-IC bypass for unruptured aneurysms (P = 0.008). There was a trend for shorter temporary occlusion and hospitalization times and overall better outcomes with IC-IC compared with EC-IC bypass. CONCLUSIONS Although often considered riskier than EC-IC bypass, IC-IC in situ bypass showd a favorable technical and safety profile for the treatment of complex, unruptured aneurysms.
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Affiliation(s)
- Kristine Ravina
- Neurorestoration Center, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA
| | - Michael G Brandel
- Department of Neurosurgery, University of California San Diego, San Diego, CA, USA
| | - Ben A Strickland
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Alice Chun
- Neurorestoration Center, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Yelim Lee
- Neurorestoration Center, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Joseph N Carey
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jonathan J Russin
- Neurorestoration Center, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
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Sarkar RR, Courtney PT, Bachand K, Sheridan PE, Riviere PJ, Guss ZD, Lopez CR, Brandel MG, Banegas MP, Murphy JD. Quality of care at safety‐net hospitals and the impact on pay‐for‐performance reimbursement. Cancer 2020; 126:4584-4592. [DOI: 10.1002/cncr.33137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/08/2020] [Accepted: 07/02/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Reith R. Sarkar
- Department of Radiation Medicine and Applied Sciences University of California San Diego School of Medicine La Jolla California
- Department of Radiation Medicine and Applied Sciences University of California at San Diego La Jolla California
| | - P. Travis Courtney
- Department of Radiation Medicine and Applied Sciences University of California San Diego School of Medicine La Jolla California
- Department of Radiation Medicine and Applied Sciences University of California at San Diego La Jolla California
| | - Katie Bachand
- Department of Radiation Medicine and Applied Sciences University of California at San Diego La Jolla California
| | - Paige E. Sheridan
- Department of Radiation Medicine and Applied Sciences University of California at San Diego La Jolla California
| | - Paul J. Riviere
- Department of Radiation Medicine and Applied Sciences University of California San Diego School of Medicine La Jolla California
- Department of Radiation Medicine and Applied Sciences University of California at San Diego La Jolla California
| | - Zachary D. Guss
- Department of Radiation Oncology Johns Hopkins University Baltimore Maryland
| | - Christian R. Lopez
- Department of Neurological Surgery Oregon Health and Science University Portland Oregon
| | - Michael G. Brandel
- Department of Radiation Medicine and Applied Sciences University of California San Diego School of Medicine La Jolla California
- Division of Neurosurgery University of California at San Diego La Jolla California
| | | | - James D. Murphy
- Department of Radiation Medicine and Applied Sciences University of California San Diego School of Medicine La Jolla California
- Department of Radiation Medicine and Applied Sciences University of California at San Diego La Jolla California
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Steinberg JA, Rennert RC, Brandel MG, Levy ML. A Paramedian Supracerebellar, Infratentorial Approach for Resection of Midbrain Tumor. World Neurosurg 2020; 143:83. [PMID: 32652277 DOI: 10.1016/j.wneu.2020.06.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 11/30/2022]
Abstract
Brainstem tumors represent formidable lesions for neurosurgical intervention. They should be approached with a thorough understanding of the anatomy and clear sense of surgical goals. A 14-year-old previously healthy girl presented with 2 weeks of nausea, headaches, diplopia, and gait instability. Workup revealed a 3.5 x 2.5 x 2.5 cm contrast-enhancing mass within the right midbrain. The patient consented to the surgical procedure. Preoperative imaging demonstrated superior displacement of the deep venous system because of the tumor, as well as inferior displacement of the fourth cranial nerve exit zone and posterior bowing of the entire tectal region. This allowed a safe corridor from a supracerebellar infratentorial approach. The three quarters lateral position was chosen to optimize surgeon ergonomics and allow for gravity to drain blood from the operative field. Near total resection was obtained without any new neurologic deficit. Final pathology was consistent with pilocytic astrocytoma, World Health Organization grade I. The video demonstrates the surgical approach in addition to techniques for brainstem tumor resection (Video 1).
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Affiliation(s)
- Jeffrey A Steinberg
- Pediatric Division of Neurosurgery, University of California at San Diego, San Diego, California, USA
| | - Robert C Rennert
- Pediatric Division of Neurosurgery, University of California at San Diego, San Diego, California, USA
| | - Michael G Brandel
- Pediatric Division of Neurosurgery, University of California at San Diego, San Diego, California, USA
| | - Michael L Levy
- Pediatric Division of Neurosurgery, University of California at San Diego, San Diego, California, USA.
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Reid CM, Parmeshwar N, Brandel MG, Crisera CA, Herrera FA, Suliman AS. Detailed analysis of the impact of surgeon and hospital volume in microsurgical breast reconstruction. Microsurgery 2020; 40:670-678. [PMID: 32304337 DOI: 10.1002/micr.30591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/13/2020] [Accepted: 04/02/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Prior investigations of microsurgical breast reconstruction have not distinguished the effects of surgeon versus hospital volume and failed to address the effect of patient clustering. Our data-driven analysis aims to determine the impacts of surgeon and hospital volume on outcomes of microsurgical breast reconstruction. METHODS Nationwide Inpatient Sample (NIS) data from 2008 to 2011 was analyzed for patients who underwent microsurgical breast reconstruction. Volume-outcome relationships were analyzed with restricted cubic spline analysis. A multivariable mixed-effects logistic regression was used to account for patient clustering effect. RESULTS A total of 5,404 NIS patients met inclusion criteria. High-volume (HV) surgeons had a 59% decrease in the risk of inpatient complications, which became non-significant after clustering correction. For HV hospitals, there was a 47% decrease in the risk of inpatient complications (odds ratio = 0.53; 95% confidence intervals 0.30, 0.91; p = 0.021) that was statistically significant with the clustering adjustment. Neither the volume-cost relationship for surgeons nor hospitals remained statistically significant after accounting for clustering. CONCLUSIONS Hospital volume plays a significant impact on outcomes in microsurgical breast reconstruction, while surgeon volume has comparatively not shown to be similarly impactful. The complexity of care related to microsurgical breast reconstruction warrants equally complex and engineered health systems.
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Affiliation(s)
- Chris M Reid
- Division of Plastic Surgery, Department of Surgery, University of California, San Diego, California, USA.,Section of Plastic & Reconstructive Surgery, VA San Diego Healthcare System, San Diego, California, USA
| | - Nisha Parmeshwar
- Division of Plastic Surgery, Department of Surgery, University of California, San Francisco, California, USA
| | - Michael G Brandel
- Division of Plastic Surgery, Department of Surgery, University of California, San Diego, California, USA
| | - Christopher A Crisera
- Division of Plastic Surgery, Department of Surgery, University of California, Los Angeles, California, USA
| | - Fernando A Herrera
- Division of Plastic Surgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Ahmed S Suliman
- Division of Plastic Surgery, Department of Surgery, University of California, San Diego, California, USA.,Section of Plastic & Reconstructive Surgery, VA San Diego Healthcare System, San Diego, California, USA
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Brandel MG, Elsawaf Y, Rennert RC, Steinberg JA, Santiago-Dieppa DR, Wali AR, Olson SE, Pannell JS, Khalessi AA. Antiplatelet therapy within 24 hours of tPA: lessons learned from patients requiring combined thrombectomy and stenting for acute ischemic stroke. J Cerebrovasc Endovasc Neurosurg 2020; 22:1-7. [PMID: 32596137 PMCID: PMC7307608 DOI: 10.7461/jcen.2020.22.1.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/24/2020] [Accepted: 03/02/2020] [Indexed: 01/01/2023] Open
Abstract
Objective Although stroke guidelines recommend antiplatelets be started 24 hours after tissue plasminogen activator (tPA), select mechanical thrombectomy (MT) patients with luminal irregularities or underlying intracranial atherosclerotic disease may benefit from earlier antiplatelet administration. Methods We explore the safety of early (<24 hours) post-tPA antiplatelet use by retrospectively reviewing patients who underwent MT and stent placement for acute ischemic stroke from June 2015 to April 2018 at our institution. Results Six patients met inclusion criteria. Median presenting and pre-operative National Institutes of Health Stroke Scale scores were 14 (Interquartile Range [IQR] 5.5–17.3) and 16 (IQR 13.7–18.7), respectively. Five patients received standard intravenous (IV) tPA and one patient received intra-arterial tPA. Median time from symptom onset to IV tPA was 120 min (IQR 78–204 min). Median time between tPA and antiplatelet administration was 4.9 hours (IQR 3.0–6.7 hours). Clots were successfully removed from the internal carotid artery (ICA) or middle cerebral artery (MCA) in 5 patients, the anterior cerebral artery (ACA) in one patient, and the vertebrobasilar junction in one patient. All patients underwent MT before stenting and achieved thrombolysis in cerebral infarction 2B recanalization. Stents were placed in the ICA (n=4), common carotid artery (n=1), and basilar artery (n=1). The median time from stroke onset to endovascular access was 185 min (IQR 136–417 min). No patients experienced symptomatic post-procedure intracranial hemorrhage (ICH). Median modified Rankin Scale score on discharge was 3.5. Conclusions Antiplatelets within 24 hours of tPA did not result in symptomatic ICH in this series. The safety and efficacy of early antiplatelet administration after tPA in select patients following mechanical thrombectomy warrants further study.
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Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - Yasmeen Elsawaf
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - Robert C Rennert
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - Jeffrey A Steinberg
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | | | - Arvin R Wali
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - Scott E Olson
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - J Scott Pannell
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
| | - Alexander A Khalessi
- Department of Neurosurgery, University of California, San Diego, La Jolla, CA, USA
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Lopez Ramos C, Rennert RC, Brandel MG, Abraham P, Hirshman BR, Steinberg JA, Santiago-Dieppa DR, Wali AR, Porras K, Almosa Y, Pannell JS, Khalessi AA. The effect of hospital safety-net burden on outcomes, cost, and reportable quality metrics after emergent clipping and coiling of ruptured cerebral aneurysms. J Neurosurg 2020; 132:788-796. [DOI: 10.3171/2018.10.jns18103] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 10/02/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVESafety-net hospitals deliver care to a substantial share of vulnerable patient populations and are disproportionately impacted by hospital payment reform policies. Complex elective procedures performed at safety-net facilities are associated with worse outcomes and higher costs. The effects of hospital safety-net burden on highly specialized, emergent, and resource-intensive conditions are poorly understood. The authors examined the effects of hospital safety-net burden on outcomes and costs after emergent neurosurgical intervention for ruptured cerebral aneurysms.METHODSThe authors conducted a retrospective analysis of the Nationwide Inpatient Sample (NIS) from 2002 to 2011. Patients ≥ 18 years old who underwent emergent surgical clipping and endovascular coiling for aneurysmal subarachnoid hemorrhage (SAH) were included. Safety-net burden was defined as the proportion of Medicaid and uninsured patients treated at each hospital included in the NIS database. Hospitals that performed clipping and coiling were stratified as low-burden (LBH), medium-burden (MBH), and high-burden (HBH) hospitals.RESULTSA total of 34,647 patients with ruptured cerebral aneurysms underwent clipping and 23,687 underwent coiling. Compared to LBHs, HBHs were more likely to treat black, Hispanic, Medicaid, and uninsured patients (p < 0.001). HBHs were also more likely to be associated with teaching hospitals (p < 0.001). No significant differences were observed among the burden groups in the severity of subarachnoid hemorrhage. After adjusting for patient demographics and hospital characteristics, treatment at an HBH did not predict in-hospital mortality, poor outcome, length of stay, costs, or likelihood of a hospital-acquired condition.CONCLUSIONSDespite their financial burden, safety-net hospitals provide equitable care after surgical clipping and endovascular coiling for ruptured cerebral aneurysms and do not incur higher hospital costs. Safety-net hospitals may have the capacity to provide equitable surgical care for highly specialized emergent neurosurgical conditions.
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Brandel MG, Lee RR, U HS. Transient Aphasia Following Resection of a Thalamic Cavernous Malformation. World Neurosurg 2020; 136:390-393.e3. [PMID: 32004743 DOI: 10.1016/j.wneu.2020.01.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND The thalamus has a demonstrated role in language, particularly through its connectivity to frontal language cortices. CASE DESCRIPTION A 59-year-old man with transient mixed aphasia following resection of a left-sided thalamic cavernous malformation is reported. No operative complications were encountered, and there was no surgical contact with cortical language areas. The patient recovered full language function within a week postoperatively. CONCLUSIONS The role of thalamic nuclei in language processes and other reports of transient thalamic aphasia are reviewed.
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Affiliation(s)
- Michael G Brandel
- Department of Neurosurgery, Veterans Administration Healthcare System, University of California San Diego, San Diego, California, USA.
| | - Roland R Lee
- Department of Radiology, Veterans Administration Healthcare System, University of California San Diego, San Diego, California, USA
| | - Hoi Sang U
- Department of Neurosurgery, Veterans Administration Healthcare System, University of California San Diego, San Diego, California, USA
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Lopez Ramos C, Brandel MG, Rennert RC, Hirshman BR, Wali AR, Steinberg JA, Santiago-Dieppa DR, Flagg M, Olson SE, Pannell JS, Khalessi AA. The Potential Impact of "Take the Volume Pledge" on Outcomes After Carotid Artery Stenting. Neurosurgery 2020; 86:241-249. [PMID: 30873551 PMCID: PMC7308658 DOI: 10.1093/neuros/nyz053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/31/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND The "Volume Pledge" aims to centralize carotid artery stenting (CAS) to hospitals and surgeons performing ≥10 and ≥5 procedures annually, respectively. OBJECTIVE To compare outcomes after CAS between hospitals and surgeons meeting or not meeting the Volume Pledge thresholds. METHODS We queried the Nationwide Inpatient Sample for CAS admissions. Hospitals and surgeons were categorized as low volume and high volume (HV) based on the Volume Pledge. Multivariable hierarchical regression models were used to examine the impact of hospital volume (2005-2011) and surgeon volume (2005-2009) on perioperative outcomes. RESULTS Between 2005 and 2011, 22 215 patients were identified. Most patients underwent CAS by HV hospitals (86.4%). No differences in poor outcome (composite endpoint of in-hospital mortality, postoperative neurological or cardiac complications) were observed by hospital volume but HV hospitals did decrease the likelihood of other complications, nonroutine discharge, and prolonged hospitalization. From 2005 to 2009, 9454 CAS admissions were associated with physician identifiers. Most patients received CAS by HV surgeons (79.2%). On multivariable analysis, hospital volume was not associated with improved outcomes but HV surgeons decreased odds of poor outcome (odds ratio [OR] 0.76, 95% confidence interval [CI] 0.59-0.97; P = .028), complications (OR 0.56, 95% CI 0.46-0.71, P < .001), nonroutine discharge (OR 0.70, 95% CI 0.57-0.87; P = .001), and prolonged hospitalization (OR 0.52, 95% 0.44-0.61, P < .001). CONCLUSION Most patients receive CAS by hospitals and providers meeting the Volume Pledge threshold for CAS. Surgeons but not hospitals who met the policy's volume standards were associated with superior outcomes across all measured outcomes.
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Affiliation(s)
- Christian Lopez Ramos
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Michael G Brandel
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Robert C Rennert
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Brian R Hirshman
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Arvin R Wali
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Jeffrey A Steinberg
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | | | - Mitchell Flagg
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Scott E Olson
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - J Scott Pannell
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
| | - Alexander A Khalessi
- Department of Neurosurgery, University of California, San Diego, La Jolla, California
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Pham TB, Srinivas S, Martin JR, Brandel MG, Wali AR, Rennert RC, Steinberg JA, Santiago-Dieppa DR, Costantini TW, Khalessi AA. Risk Factors for Urinary Tract Infection or Pneumonia After Admission for Traumatic Subdural Hematoma at a Level I Trauma Center: Large Single-Institution Series. World Neurosurg 2019; 134:e754-e760. [PMID: 31712113 DOI: 10.1016/j.wneu.2019.10.192] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND The development of infections such as urinary tract infections (UTIs) or pneumonia after a traumatic subdural hematoma (tSDH) can worsen patient outcomes and increase healthcare costs. We herein identify clinical parameters that influence the risk of infections after tSDH. METHODS This single-institution retrospective cohort study examined the incidence and risk factors for UTI and pneumonia among tSDH patients from 1990 to 2015. Multivariate logistic regression assessed the impact of various demographic and clinical variables on these outcomes. RESULTS 3024 patients with tSDHs were identified (73.1% male); Of those, 208 (6.9%) experienced a UTI and 434 (14.4%) experienced pneumonia. Of the 559 patients (18.5%) who underwent a craniotomy and/or craniectomy for evacuation of a tSDH, 62 (11.1%) experienced a UTI and 222 (39.7%) experienced pneumonia. Risk factors for both pneumonia and UTI included length of stay (LOS) ≥7 days (odds ratio [OR] = 6.0, P < 0.001; OR = 11.2, P < 0.001), intensive care unit LOS ≥7 days (OR = 8.1, P < 0.001; OR = 1.7, P = 0.012), and mechanical ventilation ≥14 days (OR = 3.4, P < 0.001; OR = 1.8, P = 0.007). Craniotomy/craniectomy increased the risk of pneumonia (OR = 1.4, P = 0.019) but not UTI. Glasgow Coma Scale (GCS) ≥13 was associated with a decreased pneumonia risk (OR = 0.5, P = 0.003), and male gender (OR = 0.5, P < 0.001) and age <60 (OR = 0.6, P < 0.001) were associated with a decreased UTI risk. CONCLUSIONS Patients with prolonged hospitalizations and/or intensive care unit stays were more likely to experience UTIs and pneumonia. Male gender and younger age were protective against UTI, and higher GCS was protective against pneumonia. These data may aid the identification and treatment of at-risk populations after admission for a tSDH.
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Affiliation(s)
- Tammy B Pham
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Shanmukha Srinivas
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Joel R Martin
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Michael G Brandel
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Arvin R Wali
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Robert C Rennert
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Jeffrey A Steinberg
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - David R Santiago-Dieppa
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA
| | - Todd W Costantini
- Department of Surgery, University of California - San Diego, La Jolla, California, USA
| | - Alexander A Khalessi
- Department of Neurological Surgery, University of California - San Diego, La Jolla, California, USA.
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