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  1. Article ; Online: Primary intradural extraosseous Ewing's sarcoma of the L3 nerve root: illustrative case.

    Arena, John D / Sinha, Saurabh / Wathen, Connor / Ghenbot, Yohannes / Zhang, Paul J / Welch, William C

    Journal of neurosurgery. Case lessons

    2024  Volume 7, Issue 3

    Abstract: Background: Ewing's sarcoma is an uncommon, aggressive malignancy that typically presents as an osseous lesion, most commonly in children and adolescents. Very rarely Ewing's sarcoma can present as an intradural extramedullary mass mimicking more common ...

    Abstract Background: Ewing's sarcoma is an uncommon, aggressive malignancy that typically presents as an osseous lesion, most commonly in children and adolescents. Very rarely Ewing's sarcoma can present as an intradural extramedullary mass mimicking more common tumors.
    Observations: A 32-year-old female had a left L3 nerve root-associated lesion identified in the setting of recent-onset radiculopathy. Contrast-enhanced magnetic resonance imaging of the lumbar spine was favored to demonstrate a schwannoma or neurofibroma. Hemilaminectomy, facetectomy, and resection of the mass led to improved radiculopathy and a tissue diagnosis of Ewing's sarcoma. Immediate referral to medical oncology facilitated expeditious initiation of adjuvant chemotherapy and radiation.
    Lessons: The differential diagnosis for newly identified nerve root-associated tumors should remain broad, including common benign pathologies and rare malignant entities. Tissue remains the gold standard for diagnosis, as preoperative imaging suggested a nerve sheath tumor. Malignant pathologies such as Ewing's sarcoma must be considered, especially in the setting of rapidly progressive symptoms or interval growth on serial imaging. Early diagnosis allows for the timely initiation of comprehensive oncological care. Long-term multidisciplinary follow-up is necessary for the surveillance of disease progression.
    Language English
    Publishing date 2024-01-15
    Publishing country United States
    Document type Journal Article
    ISSN 2694-1902
    ISSN (online) 2694-1902
    DOI 10.3171/CASE23459
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Navigated peel-away sheath assisted placement of fully pre-assembled Ommaya reservoir systems: Technical note.

    Wathen, Connor A / Punchak, Maria / Madsen, Peter / Vaughan, Kerry / Buch, Vivek / Marcotte, Paul J

    World neurosurgery: X

    2024  Volume 23, Page(s) 100295

    Language English
    Publishing date 2024-03-03
    Publishing country United States
    Document type Journal Article
    ISSN 2590-1397
    ISSN (online) 2590-1397
    DOI 10.1016/j.wnsx.2024.100295
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Management of Traumatic Atlantooccipital Dissociation at a Level 1 Trauma Center: A Retrospective Case Series.

    Wathen, Connor / Ghenbot, Yohannes / Chauhan, Daksh / Schuster, James / Petrov, Dmitriy

    World neurosurgery

    2022  Volume 170, Page(s) e264–e270

    Abstract: Objective: Atlantooccipital dislocation (AOD) is a highly unstable and often neurologically devastating injury to the craniocervical junction that typically results from high-energy trauma. Management of these devastating injuries is complex, with ... ...

    Abstract Objective: Atlantooccipital dislocation (AOD) is a highly unstable and often neurologically devastating injury to the craniocervical junction that typically results from high-energy trauma. Management of these devastating injuries is complex, with prognostication difficult due to high rates of concomitant intracranial and systemic injuries. This report highlights advances in management of AOD and appropriate implementation of operative adjuncts including neuronavigation and the use of intraoperative neuromonitoring.
    Methods: All patients with AOD presenting to a high-volume, level 1 trauma center between January 2015 and August 2021 were retrospectively identified through a prospectively maintained database of patients presenting with traumatic spine injuries. Medical records, including imaging reports, clinical documentation, and intraoperative neurophysiological reports were reviewed.
    Results: A total of 11 patients were identified with patterns of injury consistent with AOD. Fifty-five percent of patients survived until discharge. 73% of patients underwent surgery for stabilization. All 4 patients with preoperative neurologic deficits who underwent surgery had monitorable transcranial motor evoked potentials and somatosensory evoked potentials. Two experienced significant motor recovery postoperatively, and 2 did not survive to discharge. Blunt cerebrovascular injuries were identified in 73% of patients.
    Conclusion: AOD is encountered with increasing frequency. The identification and management of this specific injury is complicated by the volume and severity of associated injuries, especially concomitant traumatic brain injury. Timely recognition is critical and the use of surgical adjuncts including intraoperative neurophysiologic monitoring and surgical navigation can increase the safety and success of these procedures while also providing prognostic information on potential for motor recovery.
    MeSH term(s) Humans ; Retrospective Studies ; Trauma Centers ; Evoked Potentials, Motor/physiology ; Evoked Potentials, Somatosensory/physiology ; Intraoperative Neurophysiological Monitoring/methods ; Joint Dislocations
    Language English
    Publishing date 2022-11-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2022.11.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Letter to the Editor Regarding "Viscoelastic Hemostatic Assays and Outcomes in Traumatic Brain Injury: A Systematic Literature Review".

    Miranda, Stephen P / Wathen, Connor / Schuster, James M / Petrov, Dmitriy

    World neurosurgery

    2022  Volume 166, Page(s) 291–293

    MeSH term(s) Brain Injuries, Traumatic ; Hemostasis ; Hemostatics/therapeutic use ; Humans ; Publications
    Chemical Substances Hemostatics
    Language English
    Publishing date 2022-09-28
    Publishing country United States
    Document type Systematic Review ; Letter ; Comment
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2022.04.040
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Endoscopic-Assisted Evacuation of Lumbar Epidural Abscess: 2-Dimensional Operative Video.

    Ghenbot, Yohannes / Arena, John / Wathen, Connor / Ahmad, Hasan S / Chauhan, Daksh / Bryan, Kevin / Paik, Caroline / Yoon, Jang W

    Operative neurosurgery (Hagerstown, Md.)

    2024  

    Language English
    Publishing date 2024-01-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2767575-0
    ISSN 2332-4260 ; 2332-4252
    ISSN (online) 2332-4260
    ISSN 2332-4252
    DOI 10.1227/ons.0000000000001051
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Anticoagulation Holiday: Resumption of Direct Oral Anticoagulants for Atrial Fibrillation in Patients with Index Traumatic Intracranial Hemorrhage.

    Ghenbot, Yohannes / Arena, John D / Howard, Susanna / Wathen, Connor / Kumar, Monisha A / Schuster, James M

    World neurosurgery: X

    2022  Volume 17, Page(s) 100148

    Abstract: Background: The optimal time to restart direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF) after traumatic intracranial hemorrhage (tICH) is unknown. Physicians must weigh the risk of recurrent hemorrhage against ischemic ... ...

    Abstract Background: The optimal time to restart direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF) after traumatic intracranial hemorrhage (tICH) is unknown. Physicians must weigh the risk of recurrent hemorrhage against ischemic stroke. We investigated rates of stroke while holding anticoagulation, hemorrhage after anticoagulation resumption, and factors associated with the decision to restart anticoagulation.
    Methods: Patients presenting to our level I trauma center for tICH while on a DOAC for NVAF were retrospectively reviewed over 2 years. Age, sex, DOAC use, antiplatelet use, congestive heart failure, hypertension, age, diabetes, previous stroke, vascular disease, sex score for stroke risk in NVAF, injury mechanism, bleeding pattern, Injury Severity Score, use of a reversal agent, Glasgow Coma Scale at 24 hours, hemorrhage expansion, neurosurgical intervention, Morse Fall Risk, DOAC restart date, rebleed events, and ischemic stroke were recorded to study rates of recurrent hemorrhage and stroke, and factors that influenced the decision to restart anticoagulation.
    Results: Twenty-eight patients sustained tICH while on a DOAC. Fall was the most common mechanism (89.3%), and subdural hematoma was the predominant bleeding pattern (60.7%). Of the 25 surviving patients, 16 patients (64%) restarted a DOAC a median 29.5 days after tICH. One patient had recurrent hemorrhage after resuming anticoagulation. One patient had an embolic stroke after 118 days off anticoagulation. Age >80, Injury Severity Score ≥16, and expansion of tICH influenced the decision to indefinitely hold anticoagulation.
    Conclusion: The low stroke rate observed in this study suggests that holding DOACs for NVAF for 1 month is sufficient to reduce the risk of stroke after tICH. Additional data are required to determine optimal restart timing.
    Language English
    Publishing date 2022-10-12
    Publishing country United States
    Document type Journal Article
    ISSN 2590-1397
    ISSN (online) 2590-1397
    DOI 10.1016/j.wnsx.2022.100148
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Effectiveness of Oral Antibiotic Therapy in Prevention of Postoperative Wound Infection Requiring Surgical Washout In Spine Surgery.

    Ghenbot, Yohannes / Wathen, Connor / Gutierrez, Alexis / Spadola, Michael / Cucchiara, Andrew / Petrov, Dmitriy

    World neurosurgery

    2022  Volume 163, Page(s) e275–e282

    Abstract: Background: Surgical site infections (SSIs) after spine surgery are a significant cause of morbidity. Surgeons often prescribe oral antibiotics in the postoperative setting for infected-appearing wounds to prevent reoperation for infection; however, the ...

    Abstract Background: Surgical site infections (SSIs) after spine surgery are a significant cause of morbidity. Surgeons often prescribe oral antibiotics in the postoperative setting for infected-appearing wounds to prevent reoperation for infection; however, the efficacy of this practice has not been well studied.
    Methods: Neurosurgical spine patients with clinical concerns for SSI at the University of Pennsylvania were retrospectively studied from 2014 to 2018. Clinical predictors of 90-day reoperation for infection despite antibiotic treatment and variables that influenced antibiotic prescription were analyzed.
    Results: Three hundred and ninety-two patients were included in the study. Preoperative albumin level, days elapsed to antibiotic prescription from index surgery, preoperative hemoglobin level, surgical location, gender, discharge disposition, and level of wound concern were significant predictors of reoperation for infection on bivariate analysis. Days elapsed to antibiotic prescription, surgical location, and level of wound concern remained significant after multivariable logistic regression. Variables that significantly predicted prescription of an antibiotic include length of stay, cerebrospinal fluid leak, race, and level of wound concern. Length of stay, race, and level of wound concern remained significant after multivariable analysis.
    Conclusions: Wound infection remains a challenging problem in spine surgery and it is reasonable to perform early reoperation in patients with high clinical concerns for infection, because bacterial isolates are often resistant to common oral antibiotics. Patients with wounds with low clinical concerns for infection may undergo a trial of oral antibiotics; however, duration of treatment should not be prolonged.
    MeSH term(s) Anti-Bacterial Agents ; Antibiotic Prophylaxis ; Humans ; Reoperation/adverse effects ; Retrospective Studies ; Spine/surgery ; Surgical Wound Infection/drug therapy ; Surgical Wound Infection/etiology ; Surgical Wound Infection/prevention & control
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2022-03-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2022.03.106
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Feasibility of Magnetic Resonance-Guided Focused Ultrasound Thalamotomy for Essential Tremor in the Setting of Prior Craniotomy.

    Wathen, Connor / Yang, Andrew I / Hitti, Frederick L / Henry, Lenora / Chaibainou, Hanane / Baltuch, Gordon H

    Operative neurosurgery (Hagerstown, Md.)

    2022  Volume 22, Issue 2, Page(s) 61–65

    Abstract: Background: Magnetic resonance imaging-guided focused ultrasound (MRgFUS) thalamotomy is a rapidly evolving therapy for the treatment of essential tremor. Although the skull is a major determinant of the delivery of acoustic energy to the target, how ... ...

    Abstract Background: Magnetic resonance imaging-guided focused ultrasound (MRgFUS) thalamotomy is a rapidly evolving therapy for the treatment of essential tremor. Although the skull is a major determinant of the delivery of acoustic energy to the target, how the presence of a prior craniotomy must be accounted for during lesioning is unclear.
    Objective: To demonstrate novel application of this therapeutic option in a patient with a history of prior craniotomies for unrelated intracranial pathologies.
    Methods: A 55-yr-old man with a history of right frontal craniotomy for resection of a colloid cyst underwent a left ventrointermedius nucleus thalamotomy through MRgFUS. The prior craniotomy flap was not excluded in the treatment plan; however, all bony defects and hardware were marked as "no-pass" regions. Clinical outcomes were collected at the 6-mo follow-up.
    Results: Transducer elements whose acoustic paths would have been altered by the craniotomy defect were turned off. Sonications reaching lesional temperatures of up to 56°C were successfully delivered. The procedure was well-tolerated, without any persistent intra-ablation or postablation adverse effects. The presence of a lesion was confirmed on MRI, which was associated with a significant reduction in the patient's tremor that was sustained at the 6-mo follow-up.
    Conclusion: This case demonstrates the safety and efficacy of MRgFUS thalamotomy in a patient with prior craniotomies and highlights our strategy for acoustic lesioning in this setting.
    MeSH term(s) Craniotomy ; Essential Tremor/diagnostic imaging ; Essential Tremor/surgery ; Feasibility Studies ; Humans ; Magnetic Resonance Imaging/methods ; Magnetic Resonance Spectroscopy ; Male
    Language English
    Publishing date 2022-01-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2767575-0
    ISSN 2332-4260 ; 2332-4252
    ISSN (online) 2332-4260
    ISSN 2332-4252
    DOI 10.1227/ONS.0000000000000012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Characterizing and Improving Nomenclature for Reporting Lumbar Interbody Fusion Techniques.

    Turlip, Ryan / Ahmad, Hasan S / Ghenbot, Yohannes G / Wathen, Connor / Chauhan, Daksh / McCloskey, Kyle / Yoon, Jang W

    World neurosurgery

    2023  Volume 175, Page(s) e134–e140

    Abstract: Objective: Lumbar interbody fusion (LIF) techniques have seen impressive innovation in recent years, leading to an expansion of the LIF lexicon. This study systematically analyzes LIF nomenclature in contemporary literature and proposes a standardized ... ...

    Abstract Objective: Lumbar interbody fusion (LIF) techniques have seen impressive innovation in recent years, leading to an expansion of the LIF lexicon. This study systematically analyzes LIF nomenclature in contemporary literature and proposes a standardized classification system for reporting LIF terminology.
    Methods: A search query was conducted through the PubMed database using "lumbar fusion OR lumbar interbody fusion." A total of 1455 articles were identified, and 605 references to LIF were recorded. Following a systematic review of the terminology, we developed a LIF reporting guidelines that capture the existing LIF nomenclature while avoiding redundant or ambiguous terminology.
    Results: The most referenced anatomical approaches were transforaminal (43.0%), followed by posterior (25.0%), lateral (19.7%), and anterior (10.9%). Overall, there were 72 unique ways to describe LIF. Unique prefixes were recorded by approach (posterior: 26; lateral: 13; anterior: 3). Forty unique prefixes/suffixes overlapped in their usage. "MI" (14.4%), "MIS" (38.1%), and "MISS" (0.6%) all referenced a minimally invasive approach. "O" (12.5%), "CO" (1.3%), and "TO" (1.3%) all described open techniques. "Endo" (0.6%), "Endoscopic-assisted" (1.3%), and "PE" (1.9%) all referenced endoscopic-assisted procedures.
    Conclusions: The current LIF nomenclature contains many unique LIF terms that were found to be inconsistently defined, redundant, or ambiguous. We propose the standardization of a 4-part naming system which highlights the crucial parts of LIF: (1) intraoperative repositioning, (2) patient position, (3) anatomical approach, and (4) orientation of the surgical corridor to the psoas muscles.
    MeSH term(s) Humans ; Minimally Invasive Surgical Procedures/methods ; Lumbosacral Region/surgery ; Spinal Fusion/methods ; Lumbar Vertebrae/surgery
    Language English
    Publishing date 2023-03-14
    Publishing country United States
    Document type Systematic Review ; Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2023.03.040
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: The Digital Impact of Neurosurgery Awareness Month: Retrospective Infodemiology Study.

    Malhotra, Kashish / Dagli, Mert Marcel / Santangelo, Gabrielle / Wathen, Connor / Ghenbot, Yohannes / Goyal, Kashish / Bawa, Ashvind / Ozturk, Ali K / Welch, William C

    JMIR formative research

    2023  Volume 7, Page(s) e44754

    Abstract: Background: Neurosurgery Awareness Month (August) was initiated by the American Association of Neurological Surgeons with the aim of bringing neurological conditions to the forefront and educating the public about these conditions. Digital media is an ... ...

    Abstract Background: Neurosurgery Awareness Month (August) was initiated by the American Association of Neurological Surgeons with the aim of bringing neurological conditions to the forefront and educating the public about these conditions. Digital media is an important tool for disseminating information and connecting with influencers, general public, and other stakeholders. Hence, it is crucial to understand the impact of awareness campaigns such as Neurosurgery Awareness Month to optimize resource allocation, quantify the efficiency and reach of these initiatives, and identify areas for improvement.
    Objective: The purpose of our study was to examine the digital impact of Neurosurgery Awareness Month globally and identify areas for further improvement.
    Methods: We used 4 social media (Twitter) assessment tools (Sprout Social, SocioViz, Sentiment Viz, and Symplur) and Google Trends to extract data using various search queries. Using regression analysis, trends were studied in the total number of tweets posted in August between 2014 and 2022. Two search queries were used in this analysis: one specifically targeting tweets related to Neurosurgery Awareness Month and the other isolating all neurosurgery-related posts. Total impressions and top influencers for #neurosurgery were calculated using Symplur's machine learning algorithm. To study the context of the tweets, we used SocioViz to isolate the top 100 popular hashtags, keywords, and collaborations between influencers. Network analysis was performed to illustrate the interactions and connections within the digital media environment using ForceAtlas2 model. Sentiment analysis was done to study the underlying emotion of the tweets. Google Trends was used to study the global search interest by studying relative search volume data.
    Results: A total of 10,007 users were identified as tweeting about neurosurgery during Neurosurgery Awareness Month using the "#neurosurgery" hashtag. These tweets generated over 29.14 million impressions globally. Of the top 10 most influential users, 5 were faculty neurosurgeons at US university hospitals. Other influential users included notable organizations and journals in the field of neurosurgery. The network analysis of the top 100 influencers showed a collaboration rate of 81%. However, only 1.6% of the total neurosurgery tweets were advocating about neurosurgery awareness during Neurosurgery Awareness Month, and only 13 tweets were posted by verified users using the #neurosurgeryawarenessmonth hashtag. The sentiment analysis revealed that the majority of the tweets about Neurosurgery Awareness Month were pleasant with subdued emotion.
    Conclusions: The global digital impact of Neurosurgery Awareness Month is nascent, and support from other international organizations and neurosurgical influencers is needed to yield a significant digital reach. Increasing collaboration and involvement from underrepresented communities may help to increase the global reach. By better understanding the digital impact of Neurosurgery Awareness Month, future health care awareness campaigns can be optimized to increase global awareness of neurosurgery and the challenges facing the field.
    Language English
    Publishing date 2023-05-08
    Publishing country Canada
    Document type Journal Article
    ISSN 2561-326X
    ISSN (online) 2561-326X
    DOI 10.2196/44754
    Database MEDical Literature Analysis and Retrieval System OnLINE

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