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Bin-Alamer O, Qedair J, Abou-Al-Shaar H, Mallela AN, Balasubramanian K, Alnefaie N, Abou Al-Shaar AR, Plute T, Lu VM, McCarthy DJ, Fields DP, Agarwal N, Gerszten PC, Hamilton DK. Surgical intervention ≤ 24 hours versus > 24 hours after injury for the management of acute traumatic central cord syndrome: a systematic review and meta-analysis. J Neurosurg Spine 2024; 40:653-661. [PMID: 38335527 DOI: 10.3171/2023.11.spine23789] [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: 07/15/2023] [Accepted: 11/16/2023] [Indexed: 02/12/2024]
Abstract
OBJECTIVE The objective was to evaluate the efficacy, outcomes, and complications of surgical intervention performed within 24 hours (≤ 24 hours) versus after 24 hours (> 24 hours) in managing acute traumatic central cord syndrome (ATCCS). METHODS Articles pertinent to the study were retrieved from PubMed, Scopus, Web of Science, and Cochrane. The authors performed a systematic review and meta-analysis of treatment procedures and outcomes according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRIMSA) guidelines. RESULTS Seven articles comprising 488 patients were included, with 188 (38.5%) patients in the ≤ 24-hour group and 300 (61.5%) in the > 24-hour group. Significant differences were not found between groups in terms of demographic characteristics, injury mechanism, spinal cord compression level, neuroimaging features, and the American Spinal Injury Association (ASIA) motor score at admission. Both groups had a similar approach to surgery and steroid administration. The surgical complication rate was significantly higher in the > 24-hour group (4.5%) compared to the ≤ 24-hour group (1.2%) (p = 0.05). Clinical follow-up duration was similar at 12 months (interquartile range 3-36) for both groups (p > 0.99). The ≤ 24-hour group demonstrated a not statistically significant greater improvement in ASIA motor score, with a mean difference of 12 (95% CI -20.7 to 44.6) compared to the > 24-hour group. CONCLUSIONS The present study indicates potential advantages of early (≤ 24 hours) surgery in ATCCS patients, specifically in terms of lower complication rates. However, further research is needed to confirm these findings and their clinical implications.
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Affiliation(s)
- Othman Bin-Alamer
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jumanah Qedair
- 2College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Hussam Abou-Al-Shaar
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Arka N Mallela
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | | | - Nada Alnefaie
- 4Department of Adult Neurosurgery, National Neurosciences Institute, King Fahad Medical City, Riyadh, Saudi Arabia
| | | | - Tritan Plute
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Victor M Lu
- 6Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida
| | - David J McCarthy
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Daryl P Fields
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Nitin Agarwal
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Peter C Gerszten
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - D Kojo Hamilton
- 1Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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Di L, Tiefenbach J, McCarthy DJ, Sedighim S, Dagal A, Blandino CF, Luther EM, Lu VM, Ivan ME, Komotar RJ, Eichberg DG, Shah AH. The Utility of Transcranial Electrical Stimulation Motor Evoked Potential Monitoring in Predicting Postoperative Supplementary Motor Area Syndrome and Motor Function Recovery. World Neurosurg 2024; 183:e892-e899. [PMID: 38237803 DOI: 10.1016/j.wneu.2024.01.052] [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: 12/12/2023] [Accepted: 01/09/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND Postoperative hemiparesis following frontal lobe lesion resection is alarming, and predicting motor function recovery is challenging. Supplementary motor area (SMA) syndrome following resection of frontal lobe lesions is often indistinguishable from postoperative motor deficit due to surgical injury of motor tracts. We aimed to describe the use of intraoperative transcranial electrical stimulation (TES) with motor evoked potential monitoring data as a diagnostic tool to distinguish between SMA syndrome and permanent motor deficit (PMD). METHODS A retrospective analysis of 235 patients undergoing craniotomy and resection with TES-MEP monitoring for a frontal lobe lesion was performed. Patients who developed immediate postoperative motor deficit were included. Motor deficit and TES-MEP findings were categorized by muscle group as left upper extremity, left lower extremity, right upper extremity, or right lower extremity. Statistical analysis was performed to determine the predictive value of stable TES-MEP for SMA syndrome versus PMD. RESULTS This study included 20 patients comprising 29 cases of immediate postoperative motor deficit by muscle group. Of these, 27 cases resolved and were diagnosed as SMA syndrome, and 2 cases progressed to PMD. TES-MEP stability was significantly associated with diagnosis of SMA syndrome (P = 0.015). TES-MEP showed excellent diagnostic utility with a sensitivity and positive predictive value of 100% and 92.6%, respectively. Negative predictive value was 100%. CONCLUSIONS Temporary SMA syndrome is difficult to distinguish from PMD immediately postoperatively. TES-MEP may be a useful intraoperative adjunct that may aid in distinguishing SMA syndrome from PMD secondary to surgical injury.
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Affiliation(s)
- Long Di
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Jakov Tiefenbach
- Department of Neurological Surgery, Cleveland Clinic Foundation, Cleveland, Ohio, USA.
| | - David J McCarthy
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Shaina Sedighim
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Arman Dagal
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA; Department of Anesthesiology, Perioperative Medicine and Pain Management, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Carlos F Blandino
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Evan M Luther
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Victor M Lu
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Michael E Ivan
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA; Sylvester Comprehensive Cancer, University of Miami, Miami, Florida, USA
| | - Ricardo J Komotar
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA; Sylvester Comprehensive Cancer, University of Miami, Miami, Florida, USA
| | - Daniel G Eichberg
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Ashish H Shah
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
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Belkhir JR, Pease M, McCarthy DJ, Legarretta A, Mittal AM, Crago EA, Gross BA, Lang MJ. Subarachnoid Hemorrhage Outcomes in an Endovascular Right of First Refusal Neurosurgical Environment. World Neurosurg 2024; 181:e524-e532. [PMID: 37879435 PMCID: PMC10842161 DOI: 10.1016/j.wneu.2023.10.091] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND Randomized controlled trials demonstrate that endovascular techniques yield improved outcomes compared with microsurgical approaches. However, not all patients are suitable candidates for endovascular management. This study aimed to determine if healthy patients managed microsurgically could achieve functional outcomes comparable to patients managed endovascularly. METHODS Patients treated for ruptured aneurysmal subarachnoid hemorrhage at 2 level 1 stroke centers from January 2012 through December 2020 were retrospectively reviewed. All cases were evaluated in an endovascular right of first refusal neurosurgical environment. We collected relevant clinical and follow-up data and created a generalized linear model to identify differences between patients treated endovascularly versus microsurgically. A propensity score model accounting for these differences was used to predict patient outcomes. Functional outcomes were independently assessed using the modified Rankin Scale (mRS) with good functional outcome defined as modified Rankin Scale score <3. RESULTS The study included 588 patients (211 microsurgical, 377 endovascular); median age was 58 years (interquartile range: 40-86 years); in-hospital mortality was 13%. Age, aneurysm size, and aneurysm location significantly predicted treatment modality (all P < 0.05). After greedy-type matching (210 microsurgical, 210 endovascular), patients managed microsurgically were less likely to be discharged home (odds ratio = 0.6, 95% confidence interval 0.4-0.9, P = 0.01). Functional differences disappeared over time; patients in the 2 treatment arms had similar functional outcomes at 3 months (odds ratio = 1.1, 95% confidence interval 0.7-1.8, P = 0.66) and 1 year after subarachnoid hemorrhage (odds ratio = 1.3, 95% confidence interval 0.8-2.1, P = 0.38). CONCLUSIONS In an endovascular right of first refusal neurosurgical environment, practitioners can treat patients who are not good endovascular candidates microsurgically and achieve functional outcomes comparable to patients managed endovascularly.
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Affiliation(s)
- J Raouf Belkhir
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
| | - Matthew Pease
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - David J McCarthy
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Andrew Legarretta
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Aditya M Mittal
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Elizabeth A Crago
- University of Pittsburgh School of Nursing, Pittsburgh, Pennsylvania, USA
| | - Bradley A Gross
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Michael J Lang
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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Fields DP, Lavadi RS, Hudson JS, McCarthy DJ, Hect J, Wawrose R, Capuk O, Agarwal N, McDowell MM, Simon D, Abel TJ, Greene S. Patterns in Follow-Up Imaging Usage for Pediatric Patients with Whiplash-Associated Disorder. World Neurosurg 2023; 180:e786-e790. [PMID: 37852474 DOI: 10.1016/j.wneu.2023.10.048] [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: 07/29/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND A clinical concern exists that pediatric patients with whiplash-associated disorder (WAD) might have missed structural injuries or, alternatively, subsequently develop structural injuries over time, despite initially negative imaging findings. The primary objective of this study is to assess follow-up imaging usage for pediatric patients presenting with WAD. METHODS A retrospective review of 444 pediatric patients presenting to a level 1 pediatric trauma hospital from January 1, 2010 to December 31, 2019 was performed. Imaging was reviewed at the initial encounter and the 3- and 6-month follow-up appointments. RESULTS At the initial evaluation, children aged <6 years were more likely to receive radiographs (P = 0.007) and magnetic resonance imaging (P = 0.048) than were children aged 6-11 and 12-18 years. At the 3- and 6-month follow-up appointments, persistent neck pain was rare, representing <15% of patients at either time. Regardless of pain persistence, 80.2% of patients seen at the 3-month follow-up and 100% of patients at the 6-month follow-up underwent additional imaging studies. At the 3-month follow-up, children with persistent neck pain were more likely to undergo magnetic resonance imaging than were patients without persistent pain (P < 0.001). Also, patients with persistent neck pain were also more likely to not undergo any imaging evaluation (P = 0.002). Follow-up imaging studies did not reveal new structural injuries at either time point. CONCLUSIONS Follow-up imaging for pediatric patients with low-grade WAD did not identify new structural pathology-in patients with or without persistent neck pain.
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Affiliation(s)
- Daryl P Fields
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
| | - Raj Swaroop Lavadi
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Joseph S Hudson
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Jasmine Hect
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Richard Wawrose
- Department of Orthopedics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Okan Capuk
- Department of Neurology, University of Pittsburgh Institute for Neurodegenerative Diseases, Pittsburgh, Pennsylvania, USA
| | - Nitin Agarwal
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Michael M McDowell
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA; Department of Neurological Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Dennis Simon
- Department of Neurological Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Taylor J Abel
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA; Department of Neurological Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Stephanie Greene
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA; Department of Neurological Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Bin-Alamer O, Abou-Al-Shaar H, Gersey ZC, Huq S, Kallos JA, McCarthy DJ, Head JR, Andrews E, Zhang X, Hadjipanayis CG. Intraoperative Imaging and Optical Visualization Techniques for Brain Tumor Resection: A Narrative Review. Cancers (Basel) 2023; 15:4890. [PMID: 37835584 PMCID: PMC10571802 DOI: 10.3390/cancers15194890] [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: 08/29/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
Advancements in intraoperative visualization and imaging techniques are increasingly central to the success and safety of brain tumor surgery, leading to transformative improvements in patient outcomes. This comprehensive review intricately describes the evolution of conventional and emerging technologies for intraoperative imaging, encompassing the surgical microscope, exoscope, Raman spectroscopy, confocal microscopy, fluorescence-guided surgery, intraoperative ultrasound, magnetic resonance imaging, and computed tomography. We detail how each of these imaging modalities contributes uniquely to the precision, safety, and efficacy of neurosurgical procedures. Despite their substantial benefits, these technologies share common challenges, including difficulties in image interpretation and steep learning curves. Looking forward, innovations in this field are poised to incorporate artificial intelligence, integrated multimodal imaging approaches, and augmented and virtual reality technologies. This rapidly evolving landscape represents fertile ground for future research and technological development, aiming to further elevate surgical precision, safety, and, most critically, patient outcomes in the management of brain tumors.
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Affiliation(s)
- Othman Bin-Alamer
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Hussam Abou-Al-Shaar
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Zachary C. Gersey
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Sakibul Huq
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Justiss A. Kallos
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - David J. McCarthy
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Jeffery R. Head
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Edward Andrews
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Xiaoran Zhang
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Constantinos G. Hadjipanayis
- Center for Image-Guided Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (O.B.-A.); (H.A.-A.-S.); (Z.C.G.); (S.H.); (J.A.K.); (D.J.M.); (J.R.H.); (E.A.); (X.Z.)
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
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Luther E, McCarthy DJ, Burks J, Govindarajan V, Lu VM, Silva M, Lang M, Gross BA, Starke RM. National reduction in cerebral arteriovenous malformation treatment correlated with increased rupture incidence. J Neurointerv Surg 2023; 15:735-740. [PMID: 35902235 PMCID: PMC10306162 DOI: 10.1136/jnis-2022-019110] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 04/28/2022] [Accepted: 07/12/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Recently, there has been a shift in management of unruptured cerebral arteriovenous malformations (AVMs) following studies suggesting that medical management alone was superior to interventional therapy. OBJECTIVE To evaluate the influence of contemporary AVM management on AVM rupture patterns in the United States. METHODS 154 297 AVM admissions were identified between 2003 and 2017 in the National Inpatient Sample. Annual AVM intervention and rupture rates were computed and multivariable logistic regression assessed the likelihood of AVM intervention pre- and post-2014. Segmented regression identified significant change points and fitted segmented linear models for annual intervention and rupture rates. Correlation coefficients assessed the relationship between annual AVM intervention and rupture rates. RESULTS For unruptured AVMs, intervention likelihood and proportion decreased after 2014 (28.1% to 22.3%, p<0.0001; adjusted OR=0.857, 95% CI 0.751 to 0.977, p=0.02). Ruptured AVM admissions increased from 14.7% to 18.6% after 2014 (p<0.0001). Between 2003 and 2017, segmented linear regression identified one significant change point in intervention rate between 2014 and 2015. Average annual percent change for rupture incidence and intervention rate increased by 0.49% (p=0.0001) and decreased by 1.17% (p=0.0001), respectively. Annual AVM intervention rates were inversely correlated with annual AVM rupture incidence (Pearson coefficient=-0.82, p=0.0002). In 2017, the annual AVM rupture rate (20.6%) surpassed the annual AVM intervention rate (19.7%). CONCLUSIONS After 2014, the likelihood of intervention for unruptured AVMs decreased while the incidence of ruptured AVMs increased. These findings suggest that fewer unruptured AVM treatments may lead to increases in AVM rupture incidence.
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Affiliation(s)
- Evan Luther
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Joshua Burks
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Vaidya Govindarajan
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Victor M Lu
- Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Michael Silva
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Michael Lang
- Department of Neurosurgery, University of Pittsburgh Medical Center Health System, Pittsburgh, Pennsylvania, USA
| | - Bradley A Gross
- Department of Neurosurgery, University of Pittsburgh Medical Center Health System, Pittsburgh, Pennsylvania, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
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Hudson JS, Nowicki KW, Lucke-Wold B, Gersey ZC, Dodd WS, Alattar A, McCarthy DJ, Agarwal P, Mehdi Z, Lang MJ, Hasan DM, Hoh BL, Gross BA. Clopidogrel Is Associated with Reduced Likelihood of Aneurysmal Subarachnoid Hemorrhage: a Multi-Center Matched Retrospective Analysis. Transl Stroke Res 2023:10.1007/s12975-023-01179-9. [PMID: 37470917 DOI: 10.1007/s12975-023-01179-9] [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: 03/07/2023] [Revised: 06/27/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023]
Abstract
Maladaptive inflammation underlies the formation and rupture of human intracranial aneurysms. There is a growing body of evidence that anti-inflammatory pharmaceuticals may beneficially modulate this process. Clopidogrel (Plavix) is a commonly used irreversible P2Y12 receptor antagonist with anti-inflammatory activity. In this paper, we investigate whether clopidogrel is associated with the likelihood of aneurysm rupture in a multi-institutional propensity-matched cohort analysis. Patients presenting for endovascular treatment of their unruptured intracranial aneurysms and those presenting with aneurysm rupture between 2015 and 2019 were prospectively identified at two quaternary referral centers. Patient demographics, comorbidities, and medication usage at the time of presentation were collected. Patients taking clopidogrel or not taking clopidogrel were matched in a 1:1 fashion with respect to location, age, smoking status, aneurysm size, aspirin usage, and hypertension. A total of 1048 patients with electively treated aneurysms or subarachnoid hemorrhages were prospectively identified. Nine hundred twenty-one patients were confirmed to harbor aneurysms during catheter-based diagnostic angiography. A total of 172/921 (19%) patients were actively taking clopidogrel at the time of presentation. Three hundred thirty-two patients were matched in a 1:1 fashion. A smaller proportion of patients taking clopidogrel at presentation had ruptured aneurysms than those who were not taking clopidogrel (6.6% vs 23.5%, p < .0001). Estimated treatment effect analysis demonstrated that clopidogrel usage decreased aneurysm rupture risk by 15%. We present, to the best of our knowledge, the first large-scale multi-institutional analysis suggesting clopidogrel use is protective against intracranial aneurysm rupture. It is our hope that these data will guide future investigation, revealing the pathophysiologic underpinning of this association.
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Affiliation(s)
- Joseph S Hudson
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA.
| | - Kamil W Nowicki
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
| | - Brandon Lucke-Wold
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Zachary C Gersey
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
| | - William S Dodd
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Ali Alattar
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
| | - David J McCarthy
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
| | - Prateek Agarwal
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
| | - Zain Mehdi
- University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Michael J Lang
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
| | - David M Hasan
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
| | - Brian L Hoh
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Bradley A Gross
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop Street, 4th floor, Pittsburgh, PA, USA
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8
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Hudson JS, McCarthy DJ, Alattar A, Mehdi Z, Lang MJ, Gardner PA, Zenonos GA, Friedlander RM, Gross BA. Increased prevalence of blister aneurysm formation during the COVID-19 pandemic. Clin Neurol Neurosurg 2023; 226:107613. [PMID: 36753862 PMCID: PMC9896839 DOI: 10.1016/j.clineuro.2023.107613] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/07/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND Intracranial blister aneurysms are a rare and an historically difficult to treat subset of aneurysms. They are distinct from typical saccular aneurysms with different pathophysiology and treatment options. METHODS A prospectively maintained database of subarachnoid hemorrhage patients was queried for those presenting prior to the pandemic (2017-2019), and those presenting during the height of the pandemic in our locality (2021). Aneurysm characteristics and patient demographics associated with rupture risk/formation were collected. RESULTS 334 aneurysmal subarachnoid hemorrhage patients were reviewed. 86 of these patients presented in 2021, with a statistically significant increase in the proportion of ruptured ICA blister aneurysms as compared to 2017-2019 (7/86, 8% vs 5/248, p = .02). Mean patient age, presenting grade, other aneurysm location proportions, aneurysm size, and incidence of delayed cerebral ischemia were not different between the groups. CONCLUSIONS Patients presenting with SAH during the height of the SARS-CoV-2 pandemic in 2021 were more likely to have ICA blister type aneurysms.
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Affiliation(s)
- Joseph S Hudson
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA.
| | - David J McCarthy
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
| | - Ali Alattar
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
| | - Zain Mehdi
- University of Iowa Carver College of Medicine, 375 Newton Rd, Iowa City, 52242 IA, USA
| | - Michael J Lang
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
| | - Paul A Gardner
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
| | - Georgios A Zenonos
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
| | - Robert M Friedlander
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
| | - Bradley A Gross
- University of Pittsburgh Medical Center, Department of Neurosurgery, 200 Lothrop Street, Pittsburgh, 15213 PA, USA
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9
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Deng H, Habib A, Andrews EG, Zhang X, McCarthy DJ, Wei Z, Dhupar R, Choudry MH, Zinn PO. Combined exploratory laparotomy, transpsoas, and thoracic approach to resection of a giant spinal ganglioneuroma: illustrative case. J Neurosurg Case Lessons 2023; 5:CASE22453. [PMID: 36624632 PMCID: PMC9830412 DOI: 10.3171/case22453] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/15/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Ganglioneuromas are rare peripheral nervous system tumors of neural crest origin. Most are often asymptomatic and incidentally found, but large tumors can cause mass effect. Herein, the authors report a case of a giant ganglioneuroma that arose from the lumbar foramina into the retroperitoneal and thoracic cavities. OBSERVATIONS A 62-year-old female presented with low back pain, left lower extremity swelling, and increased sensation of an abdominal mass. Surgical treatment options were reviewed with the patient and coordinated care was planned by surgical oncological specialists. The patient opted for multistage exploratory laparotomy for abdominal mobilization, diaphragm resection, and en bloc resection with neuromonitoring. After surgery, the patient experienced significant improvement in symptoms. LESSONS A combined surgical exposure involving gastrointestinal, thoracic, and neurological surgeons can be important in the safe resection of ganglioneuromas that span multiple body cavities. Hence, a thorough preoperative assessment could help plan surgery accordingly.
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Affiliation(s)
- Hansen Deng
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Ahmed Habib
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania,Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; and
| | - Edward G. Andrews
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Xiaoran Zhang
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - David J. McCarthy
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Zhishuo Wei
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | | | - M. Haroon Choudry
- Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Pascal O. Zinn
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania,Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; and
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10
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Luther E, Govindarajan V, McCarthy DJ, Burks J, Lu V, Ramsay I, Silva M, Starke RM. Brain Arteriovenous Malformations. Neurosurg Clin N Am 2022; 33:443-448. [DOI: 10.1016/j.nec.2022.05.006] [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: 10/14/2022]
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11
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Luther E, McCarthy DJ, Burks JD, Govindarajan V, Silva MA, Lang MJ, Gross BA, Starke RM. 165 National Reduction in Cerebral Arteriovenous Malformation Treatment Correlated with Increased Rupture Incidence. Neurosurgery 2022. [DOI: 10.1227/neu.0000000000001880_165] [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: 11/18/2022] Open
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12
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Luther E, Burks J, McCarthy DJ, Govindarajan V, Nada A, Saini V, Jamshidi A, King H, Heath R, Silva M, Abecassis IJ, Starke RM. Radial Access Techniques. Neurosurg Clin N Am 2022; 33:149-159. [DOI: 10.1016/j.nec.2021.11.003] [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: 10/19/2022]
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13
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Mendez AA, McCarthy DJ, Tonetti DA, Desai SM, Mountz JM, Gardner PA, Jovin TG, Jadhav AP. Abstract WMP91: Angiographic Predictors Of Balloon Test Occlusion Outcomes. Stroke 2022. [DOI: 10.1161/str.53.suppl_1.wmp91] [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] [Indexed: 11/16/2022]
Abstract
Introduction:
Balloon test occlusion (BTO) with adjunctive single-photon emission computed tomography (SPECT) has been utilized to predict clinical tolerance after permanent internal carotid artery (ICA) occlusion. Cerebrovascular anatomical characteristics might predict BTO outcomes and identify patients susceptible to test failure.
Methods:
We performed a single center retrospective study of patients who underwent catheter based cerebral angiogram and ICA BTO from July 2013 to June 2020. SPECT imaging was completed in all the patients who passed the clinical BTO; technetium 99m-ethyl cysteinate dimer was injected intravenously after 15-30 min of occlusion and induced hypotension. The diameter of each of the vessels of the Circle of Willis was measured angiographically. The severity of hypoperfusion on SPECT imaging was classified as none, mild, low intermediate, high intermediate, and severe.
Results:
A total of 57 patients underwent BTO; neoplasia was the most common indication (n=43, 75%). Twelve patients (21.1%) developed neurologic symptoms and clinically failed the BTO; 45 patients (78.9%) passed and proceeded to SPECT. Contralateral dominant vertebral artery (p=0.02), smaller ACom (p=0.002) and ipsilateral PCom (p=0.03) diameters were correlated with clinical BTO failure. Smaller ACom was most predictive with an AUC of 0.907. The Youden index identified an ACom diameter threshold of 1.1 mm, which demonstrated a sensitivity of 91.7% and specificity of 77.8% (OR 0.026, 95% CI 0.003 - 0.226, ROC=0.847) for the prediction of BTO failure. Patients with severe SPECT asymmetry had significantly smaller caliber ACom arteries (ACom median diameter 0.95 mm vs. rest of cohort median 1.4; p=0.0073).
Conclusions:
BTO outcomes may be predicted using angiographic findings. A small (<1.1 mm) anterior communicating artery, and, less significantly, a small ipsilateral posterior communicating artery can be used to identify patients who are likely to fail BTO.
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Affiliation(s)
- Aldo A Mendez
- Neurology, Univ of Pittsburgh Med Cntr, Pittsburgh, PA
| | - David J McCarthy
- Neurological Surgery, Univ of Pittsburgh Med Cntr, Pittsburgh, PA
| | - Daniel A Tonetti
- Neurological Surgery, Univ of Pittsburgh Med Cntr, Pittsburgh, PA
| | | | | | - Paul A Gardner
- Neurological Surgery, Univ of Pittsburgh Med Cntr, Pittsburgh, PA
| | - Tudor G Jovin
- Cooper Neurological Institute, Cooper Univ Health Care, Camden, NJ
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14
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Luther E, Perez-Roman RJ, McCarthy DJ, Burks JD, Bryant JP, Madhavan K, Vanni S, Wang MY. Incidence and Clinical Outcomes of Hypothyroidism in Patients Undergoing Spinal Fusion. Cureus 2021; 13:e17099. [PMID: 34527485 PMCID: PMC8432424 DOI: 10.7759/cureus.17099] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2021] [Indexed: 11/11/2022] Open
Abstract
Background Hypothyroidism has been independently associated with the development of several comorbidities and is known to increase complication rates in non-spinal surgeries. However, there are limited data regarding the effects of hypothyroidism in major spine surgery. Therefore, we present the largest retrospective analysis evaluating outcomes in hypothyroid patients undergoing spinal fusion. Methods A retrospective review of the National Inpatient Sample (NIS) from 2004-2014 was performed. Patients with an International Classification of Diseases, 9th revision, Clinical Modification (ICD-9-CM) procedure code indicating spinal fusion (81.04-81.08, 81.34-81.38, 81.0x, 81.3x) were included. Patients with an ICD-9-CM diagnosis code indicating hypothyroidism (244.x) were compared to those without. Cervical and lumbar fusions were evaluated independently. Significant covariates in univariable logistic regression were utilized to construct multivariable models to analyze the effect of hypothyroidism on perioperative morbidity and mortality. Results A total of 4,149,125 patients were identified, of which 9.4% were hypothyroid. Although, hypothyroid patients had a higher risk of hematologic complications (lumbar - odds ratio [OR] 1.176, p < 0.0001; cervical - OR 1.162, p < 0.0001), they exhibited decreased in-hospital mortality (lumbar - OR .643, p < 0.0001; cervical - OR .606, p < 0.0001). Hypothyroid lumbar fusion patients also demonstrated decreased rates of perioperative myocardial infarction (MI) (OR .851, p < 0.0001). All these results were independent of patient gender. Conclusions Hypothyroid patients undergoing spinal fusion demonstrated lower rates of inpatient mortality and, in lumbar fusions, also had lower rates of acute MI when compared to their euthyroid counterparts. This suggests that hypothyroidism may offer protection against all-cause mortality and may be cardioprotective in the postoperative period for lumbar spinal fusions independent of patient gender.
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Affiliation(s)
- Evan Luther
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | | | - David J McCarthy
- Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Joshua D Burks
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - Jean-Paul Bryant
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | | | - Steven Vanni
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - Michael Y Wang
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, USA
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15
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Oravec CS, Tschoe C, Fargen KM, Kittel CA, Spiotta A, Almallouhi E, Starke RM, McCarthy DJ, Simon S, Zyck S, Gould GC, De Leacy R, Mocco J, Siddiqui A, Vaziri S, Fox WC, Fraser JF, Chitale R, Zipfel G, Huguenard A, Wolfe SQ. Trends in mechanical thrombectomy and decompressive hemicraniectomy for stroke: A multicenter study. Neuroradiol J 2021; 35:170-176. [PMID: 34269121 DOI: 10.1177/19714009211030526] [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] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND PURPOSE Acute ischemic stroke has increasingly become a procedural disease following the demonstrated benefit of mechanical thrombectomy (MT) for emergent large vessel occlusion (ELVO) on clinical outcomes and tissue salvage in randomized trials. Given these data and anecdotal experience of decreased numbers of decompressive hemicraniectomies (DHCs) performed for malignant cerebral edema, we sought to correlate the numbers of strokes, thrombectomies, and DHCs performed over the timeline of the 2013 failed thrombolysis/thrombectomy trials, to the 2015 modern randomized MT trials, to post-DAWN and DEFUSE 3. MATERIALS AND METHODS This is a multicenter retrospective compilation of patients who presented with ELVO in 11 US high-volume comprehensive stroke centers. Rates of tissue plasminogen activator (tPA), thrombectomy, and DHC were determined by current procedural terminology code, and specificity to acute ischemic stroke confirmed by each institution. Endpoints included the incidence of stroke, thrombectomy, and DHC and rates of change over time. RESULTS Between 2013 and 2018, there were 55,247 stroke admissions across 11 participating centers. Of these, 6145 received tPA, 4122 underwent thrombectomy, and 662 patients underwent hemicraniectomy. The trajectories of procedure rates over time were modeled and there was a significant change in MT rate (p = 0.002) without a concomitant change in the total number of stroke admissions, tPA administration rate, or rate of DHC. CONCLUSIONS This real-world study confirms an increase in thrombectomy performed for ELVO while demonstrating stable rates of stroke admission, tPA administration and DHC. Unlike prior studies, increasing thrombectomy rates were not associated with decreased utilization of hemicraniectomy.
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Affiliation(s)
- Chesney S Oravec
- Department of Neurosurgery, Wake Forest Baptist Medical Center, USA
| | - Christine Tschoe
- Department of Neurosurgery, Wake Forest Baptist Medical Center, USA
| | - Kyle M Fargen
- Department of Neurosurgery, Wake Forest Baptist Medical Center, USA
| | - Carol A Kittel
- Department of Biostatistics and Data Science, Wake Forest University School of Medicine, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | - Justin F Fraser
- Departments of Neurological Surgery, Neurology, Radiology, and Neuroscience, University of Kentucky, USA
| | | | | | | | - Stacey Q Wolfe
- Department of Neurosurgery, Wake Forest Baptist Medical Center, USA
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16
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Li Y, Chen SH, Guniganti R, Kansagra AP, Piccirillo JF, Chen CJ, Buell T, Sheehan JP, Ding D, Lanzino G, Brinjikji W, Kim LJ, Levitt MR, Abecassis IJ, Bulters DO, Durnford A, Fox WC, Polifka AJ, Gross BA, Sur S, McCarthy DJ, Yavagal DR, Peterson EC, Hayakawa M, Derdeyn C, Samaniego EA, Amin-Hanjani S, Alaraj A, Kwasnicki A, Charbel FT, van Dijk JMC, Potgieser AR, Satomi J, Tada Y, Abla A, Phelps R, Du R, Lai PMR, Zipfel GJ, Starke RM. Onyx embolization for dural arteriovenous fistulas: a multi-institutional study. J Neurointerv Surg 2021; 14:neurintsurg-2020-017109. [PMID: 33632883 DOI: 10.1136/neurintsurg-2020-017109] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Although the liquid embolic agent, Onyx, is often the preferred embolic treatment for cerebral dural arteriovenous fistulas (DAVFs), there have only been a limited number of single-center studies to evaluate its performance. OBJECTIVE To carry out a multicenter study to determine the predictors of complications, obliteration, and functional outcomes associated with primary Onyx embolization of DAVFs. METHODS From the Consortium for Dural Arteriovenous Fistula Outcomes Research (CONDOR) database, we identified patients who were treated for DAVF with Onyx-only embolization as the primary treatment between 2000 and 2013. Obliteration rate after initial embolization was determined based on the final angiographic run. Factors predictive of complete obliteration, complications, and functional independence were evaluated with multivariate logistic regression models. RESULTS A total 146 patients with DAVFs were primarily embolized with Onyx. Mean follow-up was 29 months (range 0-129 months). Complete obliteration was achieved in 80 (55%) patients after initial embolization. Major cerebral complications occurred in six patients (4.1%). At last follow-up, 84% patients were functionally independent. Presence of flow symptoms, age over 65, presence of an occipital artery feeder, and preprocedural home anticoagulation use were predictive of non-obliteration. The transverse-sigmoid sinus junction location was associated with fewer complications, whereas the tentorial location was predictive of poor functional outcomes. CONCLUSIONS In this multicenter study, we report satisfactory performance of Onyx as a primary DAVF embolic agent. The tentorium remains a more challenging location for DAVF embolization, whereas DAVFs located at the transverse-sigmoid sinus junction are associated with fewer complications.
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Affiliation(s)
- Yangchun Li
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Stephanie H Chen
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Ridhima Guniganti
- Department of Neurological Surgery, Washington University School of Medicine in Saint Louis, St Louis, Missouri, USA
| | - Akash P Kansagra
- Department of Neurological Surgery, Washington University in St Louis, St Louis, Missouri, USA
| | - Jay F Piccirillo
- Department of Neurological Surgery, Washington University in St Louis, St Louis, Missouri, USA
| | - Ching-Jen Chen
- Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Thomas Buell
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Jason P Sheehan
- Department of Neurosurgery, University of Virginia, Charlottesville, Virginia, USA
| | - Dale Ding
- Department of Neurosurgery, University of Louisville, Louisville, Kentucky, USA
| | - Giuseppe Lanzino
- Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Louis J Kim
- Department of Neurological Surgery, University of Washington, Seattle, Washington, USA
| | - Michael R Levitt
- Department of Neurological Surgery, University of Washington School of Medicine, Seattle, Washington, USA
| | | | | | - Andrew Durnford
- Department of Neurosurgery, University of Southampton, Southampton, Hampshire, UK
| | - W Christopher Fox
- Department of Neurosurgery, Mayo Clinic Hospital Jacksonville, Jacksonville, Florida, USA
| | - Adam J Polifka
- Department of Neurosurgery, University of Florida, Gainesville, Florida, USA
| | - Bradley A Gross
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Samir Sur
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Dileep R Yavagal
- Department of Neurology and Neurosurgery, University of Miami, Miami, Florida, USA
| | - Eric C Peterson
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Minako Hayakawa
- Division of Neurointerventional Surgery, Department of Neurology, Neurosurgery and Radiology, University of Iowa, Iowa City, Iowa, USA
| | - Colin Derdeyn
- Department of Radiology and Interventional Radiology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Edgar A Samaniego
- Department of Neurology, Radiology and Neurosurgery, The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | | | - Ali Alaraj
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Amanda Kwasnicki
- Department of Neurosurgery, University of Illinois Hospital and Health Sciences System, Chicago, Illinois, USA
| | - Fady T Charbel
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA
| | - J Marc C van Dijk
- Department of Neurosurgery, Universitair Medisch Centrum Groningen, Groningen, Groningen, Netherlands
| | - Adriaan Re Potgieser
- Department of Neurosurgery, University of Groningen, Groningen, Groningen, Netherlands
| | - Junichiro Satomi
- Department of Neurosurgery, Tokushima University Hospital, Tokushima, Tokushima, Japan
| | - Yoshiteru Tada
- Department of Neurosurgery, Tokushima University, Tokushima, Tokushima, Japan
| | - Adib Abla
- Department of Neurosurgery, University of California, San Francisco, California, USA
| | - Ryan Phelps
- Department of Neurosurgery, UCSF, San Francisco, California, USA
| | - Rose Du
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Pui Man Rosalind Lai
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Gregory J Zipfel
- Department of Neurological Surgery, Washington University, St Louis, Missouri, USA.,Department of Neurological Surgery, Washington University, St Louis, Missouri, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA .,Department of Radiology, University of Miami School of Medicine, Miami, Florida, USA
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17
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McCarthy DJ, Ayodele M, Luther E, Sheinberg D, Bryant JP, Elwardany O, Kimball J, Starke RM. Prolonged Heightened Blood Pressure Following Mechanical Thrombectomy for Acute Stroke is Associated with Worse Outcomes. Neurocrit Care 2021; 32:198-205. [PMID: 31385182 DOI: 10.1007/s12028-019-00803-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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] [Indexed: 01/01/2023]
Abstract
BACKGROUND Most data evaluating the relationship of post-mechanical thrombectomy (MT) blood pressure (BP) management and outcomes of patients with large vessel occlusion (LVO) focus on early BP control within the first 24 h. We investigated the correlation of daily BP trends up to the third day following MT with patient outcomes. METHODS We retrospectively reviewed our prospectively maintained database for LVO patients treated with MT from February 2015 to December 2017. Recorded BP values for 72 h post-reperfusion were reviewed. Daily peak systolic and diastolic blood pressures (SBP, DBP) were extracted for each day post-procedure. The association and importance between BP increments of 10 mmHg and mortality, hemorrhage, and functional independence (FI = mRS ≤ 2) was analyzed in a multivariable logistic regression and random forest (RF) analyses modeling. RESULTS A total of 212 thrombectomies were included. An increase in peak 24-h SBP was independently associated with higher likelihood of symptomatic hemorrhage (OR 1.2, p = 0.048) and decreased functional independence (OR 0.85, p = 0.03). Higher day 2 and day 3 peak SBP was strongly correlated with decreased functional independence and higher mortality. Third day SBP < 140 was independently associated with higher likelihood of functional independence (OR 4.3, p = 0.0004). Post-MT patients with and without functional independence demonstrated a similar relative decrease in peak SBP between the first 2 days following thrombectomy (p = 0.26); however, those without functional independence experienced a significant rebound increase in peak SBP on the third day following MT (mean change from day 2 to 3: FI - 3.5 mmHg, non-FI + 3.9 mmHg; p = 0.005). CONCLUSION High daily maximum SBP and a rebound SBP on the third day following MT is independently associated with increased likelihood of functional dependence.
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Affiliation(s)
- David J McCarthy
- Department of Neurosurgery, University of Miami, Miami, USA.
- University of Miami Miller School of Medicine, 1095 N.W. 14th Terrace, 2nd Floor (D4-6), Miami, FL, 33136, USA.
| | | | - Evan Luther
- Department of Neurosurgery, University of Miami, Miami, USA
| | | | | | - Omar Elwardany
- Department of Neurosurgery, University of Miami, Miami, USA
| | - John Kimball
- Department of Neurosurgery, University of Miami, Miami, USA
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18
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Luther E, Burks J, Abecassis IJ, Nada A, Heath R, Berry K, McCarthy DJ, Saini V, Silva M, Huang E, Strickland A, Yavagal DR, Peterson EC, Levitt MR, Starke RM. Navigating radial artery loops in neurointerventions. J Neurointerv Surg 2020; 13:1027-1031. [PMID: 33443135 DOI: 10.1136/neurintsurg-2020-016856] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 09/09/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Although studies continue to demonstrate lower complications in neurointerventions using transradial access (TRA) compared with transfemoral approaches, anatomic radial variants can be difficult to navigate and remain one of the frequent causes of access site conversion. OBJECTIVE To evaluate predictors of TRA failure in neuroendovascular patients with radial loops and suggest a protocol for managing these anomalies. METHODS A prospective collection of patients undergoing TRA at participating institutions from July 2018 to September 2020 was reviewed. Patients with a radial loop were identified. Patient demographics and procedural characteristics were evaluated to determine predictors of both TRA failure and successful reduction of the radial loop. RESULTS We identified 32 transradial neurointerventions in which patients had radial loops. Twenty-two (68.8%) were identified by diagnostic angiography, and the majority were performed for evaluation or treatment of an aneurysm (56.3%). TRA failure occurred in 13 (40.6%) of the cohort and happened more frequently in patients over 60 years of age (p=0.01) and those with recurrent radial artery diameters ≤2 mm (p=0.02). Of the 19 patients who had successful TRA, 12 (63.2%) procedures were performed through the recurrent radial artery. CONCLUSION Although radial loops are associated with high transradial failure rates, our results suggest that the presence of a loop is not an absolute contraindication to TRA. Therefore, we recommend attempting loop navigation using our protocol. Patient age, vascular tortuosity, and recurrent radial artery size should help dictate when to convert to an alternative access site.
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Affiliation(s)
- Evan Luther
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Joshua Burks
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Isaac Josh Abecassis
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA.,Department of Neurological Surgery, University of Washington, Seattle, Washington, USA
| | - Ahmed Nada
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA.,Department of Neurological Surgery, Port Said University, Port Said, Egypt
| | - Rainya Heath
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Katherine Berry
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Vasu Saini
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Michael Silva
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Eric Huang
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Allison Strickland
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA.,University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Dileep R Yavagal
- Department of Neurology, University of Miami, Miami, Florida, USA
| | - Eric C Peterson
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Michael R Levitt
- Department of Neurological Surgery, University of Washington, Seattle, Washington, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
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19
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McCarthy DJ, Luther E, Gross BA, Starke RM. Unruptured AVM Intervention Rate is Inversely Correlated with Ruptured AVM Discharge Incidence. Neurosurgery 2020. [DOI: 10.1093/neuros/nyaa447_251] [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: 11/13/2022] Open
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20
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Luther E, McCarthy DJ, Strickland A, Nada A, Burks JD, Silva MA, Yavagal DR, Peterson EC, Starke RM, Morcos JJ. Transradial Access Failures During Cerebral Angiography for Moyamoya Disease. Neurosurgery 2020. [DOI: 10.1093/neuros/nyaa447_379] [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: 11/13/2022] Open
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21
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McCarthy DJ, Tonetti DA, Stone J, Starke RM, Narayanan S, Lang MJ, Jadhav AP, Gross BA. More expansive horizons: a review of endovascular therapy for patients with low NIHSS scores. J Neurointerv Surg 2020; 13:146-151. [PMID: 33028674 DOI: 10.1136/neurintsurg-2020-016583] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 07/01/2020] [Revised: 09/08/2020] [Accepted: 09/13/2020] [Indexed: 11/03/2022]
Abstract
While the landmark 2015 stroke trials demonstrated that endovascular therapy (EVT) was superior to medical management for the treatment of acute ischemic stroke due to large vessel occlusion, the efficacy of EVT for patients presenting with a low NIHSS score remains undetermined. We conducted a review of the EVT low National Institutes of Health Stroke Scale (NIHSS) stroke literature, identifying 24 quantitative and six qualitative publications. Details of study designs and outcome were extracted and critically discussed.All identified qualitative studies were retrospective. There was significant study design heterogeneity, with 18 unique study designs between the 24 identified quantitative manuscripts. Study investigations included low NIHSS EVT feasibility (n=6), EVT versus best medical management (BMM; n=10), EVT versus intravenous therapy (IVT, n=3), and low NIHSS score versus high NIHSS score (n=3). From single-arm EVT feasibility studies, the reported ranges of modified Thrombolysis in Cerebral Infarction and symptomatic intracranial hemorrhage were 78-97% and 0-10%, respectively. The EVT versus BMM literature had heterogeneous results with 40% reporting benefit with EVT and 60% reporting neutral findings. None of the studies comparing EVT with IVT reported a difference between the two revascularization therapies. The four identified meta-analyses had incongruent inclusion criteria and conflicting results. Two randomized trials are currently investigating EVT in patients with a low NIHSS score. Selected meta-analyses do suggest a potential benefit of EVT over BMM; however, current and future randomized clinical trials will better elucidate the efficacy of EVT in this patient population.
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Affiliation(s)
- David J McCarthy
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Daniel A Tonetti
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jeremy Stone
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami MILLER School of Medicine, Miami Beach, Florida, USA.,Department of Neurosurgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Sandra Narayanan
- Department of Neurology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Michael J Lang
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Ashutosh P Jadhav
- Department of Neurology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Bradley A Gross
- Department of Neurosurgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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McCarthy DJ, Sheinberg DL, Luther E, McCrea HJ. Myelomeningocele-associated hydrocephalus: nationwide analysis and systematic review. Neurosurg Focus 2020; 47:E5. [PMID: 31574479 DOI: 10.3171/2019.7.focus19469] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 07/25/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Myelomeningocele (MMC), the most severe form of spina bifida, is characterized by protrusion of the meninges and spinal cord through a defect in the vertebral arches. The management and prevention of MMC-associated hydrocephalus has evolved since its initial introduction with regard to treatment of MMC defect, MMC-associated hydrocephalus treatment modality, and timing of hydrocephalus treatment. METHODS The Nationwide Inpatient Sample (NIS) database from the years 1998-2014 was reviewed and neonates with spina bifida and hydrocephalus status were identified. Timing of hydrocephalus treatment, delayed treatment (DT) versus simultaneous MMC repair with hydrocephalus treatment (ST), and treatment modality (ETV vs ventriculoperitoneal shunt [VPS]) were analyzed. Yearly trends were assessed with univariable logarithmic regression. Multivariable logistic regression identified correlates of inpatient shunt failure. A PRISMA systematic literature review was conducted that analyzed data from studies that investigated 1) MMC closure technique and hydrocephalus rate, 2) hydrocephalus treatment modality, and 3) timing of hydrocephalus treatment. RESULTS A weighted total of 10,627 inpatient MMC repairs were documented in the NIS, 8233 (77.5%) of which had documented hydrocephalus: 5876 (71.4%) were treated with VPS, 331 (4.0%) were treated with ETV, and 2026 (24.6%) remained untreated on initial inpatient stay. Treatment modality rates were stable over time; however, hydrocephalic patients in later years were less likely to receive hydrocephalus treatment during initial inpatient stay (odds ratio [OR] 0.974, p = 0.0331). The inpatient hydrocephalus treatment failure rate was higher for patients who received ETV treatment (17.5% ETV failure rate vs 7.9% VPS failure rate; p = 0.0028). Delayed hydrocephalus treatment was more prevalent in the later time period (77.9% vs 69.5%, p = 0.0287). Predictors of inpatient shunt failure included length of stay, shunt infection, jaundice, and delayed treatment. A longer time between operations increased the likelihood of inpatient shunt failure (OR 1.10, p < 0.0001). However, a meta-analysis of hydrocephalus timing studies revealed no difference between ST and DT with respect to shunt failure or infection rates. CONCLUSIONS From 1998 to 2014, hydrocephalus treatment has become more delayed and the number of hydrocephalic MMC patients not treated on initial inpatient stay has increased. Meta-analysis demonstrated that shunt malfunction and infection rates do not differ between delayed and simultaneous hydrocephalus treatment.
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Tschoe C, Kittel C, Brown P, Hafeez M, Kan P, Alawieh A, Spiotta AM, Almallouhi E, Dumont TM, McCarthy DJ, Starke RM, De Leacy R, Wolfe SQ, Fargen KM. Impact of off-hour endovascular therapy on outcomes for acute ischemic stroke: insights from STAR. J Neurointerv Surg 2020; 13:693-696. [PMID: 32900909 DOI: 10.1136/neurintsurg-2020-016474] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/30/2020] [Accepted: 08/01/2020] [Indexed: 11/03/2022]
Abstract
BACKGROUND The off-hour effect has been observed in the medical care of acute ischemic stroke. However, it remains unclear if time of arrival affects revascularization rates and outcomes after endovascular therapy (EVT) for emergent large vessel occlusion (ELVO). We aimed to investigate the clinical outcomes of EVT between on-hour and off-hour admissions. METHODS Patients who underwent EVT for ELVO from January 2013 to June 2019 from the STAR Registry were included. Patients were grouped based on time of groin puncture: on-hour period (Monday through Friday, 7:00 am-4:59 pm) and off-hour period (overnight 5:00pm-6:59am and the weekends). Primary outcome was final modified Rankin Scale (mRS) at 90 days on mRS-shift analysis. RESULTS A total of 1919 patients were included in the study from six centers. The majority of patients (1169, 60.9%) of patients presented during the off-hour period. The mean age was 68.1 years and 50.5% were women. Successful reperfusion, as defined by a Thrombolysis In Cerebral Infarction (TICI) score of ≥2B, was achieved in 88.8% in the on-hour group and 88.0% in the off-hour group. Good clinical outcome (mRS 0-2) was obtained in 34.4% of off-hour patients and 37.7% of on-hour patients. On multivariable ordinal logistic regression analysis, time of presentation was not associated with worsened outcome (OR 1.150; 95% CI 0.96 to 1.37; P=0.122). Age, admission National Institutes of Health Stroke Scale (NIHSS), baseline mRS, and final TICI score were significantly associated with worse outcomes. CONCLUSION There is no statistical difference in functional outcome in acute ischemic stroke patients who underwent EVT during on-hours versus off-hours.
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Affiliation(s)
- Christine Tschoe
- Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Carol Kittel
- Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Patrick Brown
- Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Muhammad Hafeez
- Department of Neurology, Baylor College of Medicine, Houston, Texas, USA
| | - Peter Kan
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
| | - Ali Alawieh
- Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Alejandro M Spiotta
- Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Eyad Almallouhi
- Neurology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Travis M Dumont
- Department of Surgery, Division of Neurosurgery, University of Arizona/Arizona Health Science Center, Tucson, Arizona, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Reade De Leacy
- Radiology, Mount Sinai Health System, New York, New York, USA
| | - Stacey Q Wolfe
- Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Kyle M Fargen
- Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
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24
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Luther E, Chen SH, McCarthy DJ, Nada A, Heath R, Berry K, Strickland A, Burks J, Silva M, Sur S, Yavagal DR, Starke RM, Peterson EC. Implementation of a radial long sheath protocol for radial artery spasm reduces access site conversions in neurointerventions. J Neurointerv Surg 2020; 13:547-551. [PMID: 32843358 DOI: 10.1136/neurintsurg-2020-016564] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 06/29/2020] [Revised: 07/30/2020] [Accepted: 08/05/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Many neurointerventionalists have transitioned to transradial access (TRA) as the preferred approach for neurointerventions as studies continue to demonstrate fewer access site complications than transfemoral access. However, radial artery spasm (RAS) remains one of the most commonly cited reasons for access site conversions. We discuss the benefits, techniques, and indications for using the long radial sheath in RAS and present our experience after implementing a protocol for routine use. METHODS A retrospective review of all patients undergoing neurointerventions via TRA at our institution from July 2018 to April 2020 was performed. In November 2019, we implemented a long radial sheath protocol to address RAS. Patient demographics, RAS rates, radial artery diameter, and access site conversions were compared before and after the introduction of the protocol. RESULTS 747 diagnostic cerebral angiograms and neurointerventional procedures in which TRA was attempted as the primary access site were identified; 247 were performed after the introduction of the long radial sheath protocol. No significant differences in age, gender, procedure type, sheath sizes, and radial artery diameter were seen between the two cohorts. Radial anomalies and small radial diameters were more frequently seen in patients with RAS. Patients with clinically significant RAS more often required access site conversion (p<0.0001), and in our multivariable model use of the long sheath was the only covariate protective against radial failure (OR 0.061, 95% CI 0.007 to 0.517; p=0.0103). CONCLUSION In our experience, we have found that the use of long radial sheaths significantly reduces the need for access site conversions in patients with RAS during cerebral angiography and neurointerventions.
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Affiliation(s)
- Evan Luther
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Stephanie H Chen
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Ahmed Nada
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Rainya Heath
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Katherine Berry
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Allison Strickland
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Joshua Burks
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Michael Silva
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Samir Sur
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Dileep R Yavagal
- Neurology and Neurosurgery, University of Miami, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Eric C Peterson
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
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25
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Starke RM, McCarthy DJ, Chen CJ, Kano H, McShane B, Lee J, Mathieu D, Vasas LT, Kaufmann AM, Wang WG, Grills IS, Patibandla MR, Cifarelli CP, Paisan G, Vargo JA, Chytka T, Janouskova L, Feliciano CE, Rodriguez-Mercado R, Tonetti DA, Lunsford LD, Sheehan JP. Evaluation of stereotactic radiosurgery for cerebral dural arteriovenous fistulas in a multicenter international consortium. J Neurosurg 2020; 132:114-121. [PMID: 30611144 DOI: 10.3171/2018.8.jns181467] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 06/03/2018] [Accepted: 08/16/2018] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In this multicenter study, the authors reviewed the results obtained in patients who underwent Gamma Knife radiosurgery (GKRS) for dural arteriovenous fistulas (dAVFs) and determined predictors of outcome. METHODS Data from a cohort of 114 patients who underwent GKRS for cerebral dAVFs were compiled from the International Gamma Knife Research Foundation. Favorable outcome was defined as dAVF obliteration and no posttreatment hemorrhage or permanent symptomatic radiation-induced complications. Patient and dAVF characteristics were assessed to determine predictors of outcome in a multivariate logistic regression analysis; dAVF-free obliteration was calculated in a competing-risk survival analysis; and Youden indices were used to determine optimal radiosurgical dose. RESULTS A mean margin dose of 21.8 Gy was delivered. The mean follow-up duration was 4 years (range 0.5-18 years). The overall obliteration rate was 68.4%. The postradiosurgery actuarial rates of obliteration at 3, 5, 7, and 10 years were 41.3%, 61.1%, 70.1%, and 82.0%, respectively. Post-GRKS hemorrhage occurred in 4 patients (annual risk of 0.9%). Radiation-induced imaging changes occurred in 10.4% of patients; 5.2% were symptomatic, and 3.5% had permanent deficits. Favorable outcome was achieved in 63.2% of patients. Patients with middle fossa and tentorial dAVFs (OR 2.4, p = 0.048) and those receiving a margin dose greater than 23 Gy (OR 2.6, p = 0.030) were less likely to achieve a favorable outcome. Commonly used grading scales (e.g., Borden and Cognard) were not predictive of outcome. Female sex (OR 1.7, p = 0.03), absent venous ectasia (OR 3.4, p < 0.001), and cavernous carotid location (OR 2.1, p = 0.019) were predictors of GKRS-induced dAVF obliteration. CONCLUSIONS GKRS for cerebral dAVFs achieved obliteration and avoided permanent complications in the majority of patients. Those with cavernous carotid location and no venous ectasia were more likely to have fistula obliteration following radiosurgery. Commonly used grading scales were not reliable predictors of outcome following radiosurgery.
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Affiliation(s)
- Robert M Starke
- 1Department of Neurological Surgery, University of Miami, Florida
| | - David J McCarthy
- 1Department of Neurological Surgery, University of Miami, Florida
| | - Ching-Jen Chen
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
| | - Hideyuki Kano
- 3Department of Neurological Surgery, University of Pittsburgh
| | - Brendan McShane
- 4Department of Neurological Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - John Lee
- 4Department of Neurological Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - David Mathieu
- 5Department of Neurological Surgery, University of Sherbrooke, Quebec
| | - Lucas T Vasas
- 6Department of Neurological Surgery, University of Manitoba, Winnipeg, Canada
| | - Anthony M Kaufmann
- 6Department of Neurological Surgery, University of Manitoba, Winnipeg, Canada
| | - Wei Gang Wang
- 7Department of Radiation Oncology, Beaumont Health System, Royal Oak, Michigan
| | - Inga S Grills
- 7Department of Radiation Oncology, Beaumont Health System, Royal Oak, Michigan
| | - Mohana Rao Patibandla
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
| | | | - Gabriella Paisan
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
| | - John A Vargo
- 9Radiation Oncology, West Virginia University, Morgantown, West Virginia
| | - Tomas Chytka
- 10Department of Neurological Surgery, Na Homolce Hospital, Prague, Czech Republic; and
| | - Ladislava Janouskova
- 10Department of Neurological Surgery, Na Homolce Hospital, Prague, Czech Republic; and
| | - Caleb E Feliciano
- 11Department of Neurological Surgery, University of Puerto Rico, San Juan, Puerto Rico
| | | | | | - L Dade Lunsford
- 3Department of Neurological Surgery, University of Pittsburgh
| | - Jason P Sheehan
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
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Al Kasab S, Almallouhi E, Lozano DJ, McCarthy DJ, Saini VA, Alawieh A, Psychogios MN, Arthur A, Kim JT, De Leacy R, Rai A, Keyrouz S, Fargen K, Dumont T, Kan P, Spiotta AM, Starke R. Abstract WP2: Long-Term Functional Outcomes Following Mechanical Thrombectomy Stratified by Race- Insights From the STAR Collaboration. Stroke 2020. [DOI: 10.1161/str.51.suppl_1.wp2] [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] [Indexed: 11/16/2022]
Abstract
Introduction:
Previous research reported higher prevalence of vascular risk factors and worse outcomes after stroke in non-white patients compared to whites. Whether similar results still apply in the post mechanical thrombectomy era remains unknown.
Methods:
The STAR registry combined the prospectively maintained databases of 11 thrombectomy-capable stroke centers in the US, Europe, and Asia. Consecutive patients who underwent MT were included in these analyses. Baseline features, risk factors, location of occlusion, time from symptom onset, tPA receipt, procedural complication rates, symptomatic hemorrhage, and long-term functional outcome were compared between white and non-white patients. Multivariate logistic regression analysis was performed to evaluate the impact of race on long-term outcome.
Results:
Total of 2,284 patients were included in this analysis. Of those, 1,436 (62.9%) were white. Baseline features and outcomes are summarized in table 1. Non-white patients were older ( 71 Vs 66, p=<0.001), more likely to be female ( 53.1% Vs 48.5%, p=0.034), had lower NIHSS on admission ( 15 Vs 16, p=<0.001), higher prevalence of hypertension, hyperlipidemia, diabetes, lower incidence of atrial fibrillation, higher rate of tPA receipt, shorter onset to groin access times, and longer procedural times. White patients had higher rates of successful revascularization (77.4% Vs 72.3%, p=0.006) and longer hospital stay. On multivariate logistic regression analysis, white race was an independent predictor of good 90-day outcome (OR 1.35, 95% CI 1.03-1.76, P=0.031) after controlling for age, sex, location of occlusion, IV-tPA, ASPECT score, procedure duration and final TICI score.
Conclusion:
In this study, white race was independent predictor of good 90-day outcome. This finding could be due to higher prevalence of vascular risk factors in non-white patients.
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Affiliation(s)
| | | | | | | | | | | | | | - Adam Arthur
- Univ of Tennessee Health Science Cntr, Memphis, TN
| | - Joon-Tae Kim
- Chonnam National Univ Hosp, Kwangju, Korea, Republic of
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McCarthy DJ, Saini V, Chen S, Luther E, Sheinberg D, Arthur A, Kim JT, De Leacy R, Maier I, Psychogios M, Rai A, Keyrouz S, Fargen K, Dumont T, Kan P, Alawieh A, Eyad A, Spiotta A, Starke R. Abstract TP15: A Multicenter Study Comparing Solumbra to Standard Aspiration and Stent Retriever Thrombectomy. Stroke 2020. [DOI: 10.1161/str.51.suppl_1.tp15] [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] [Indexed: 11/16/2022]
Abstract
Background:
Standard mechanical thrombectomy (MT) techniques utilized include aspiration thrombectomy (ADAPT), stent retriever (SR), and a combination of both (Solumbra). Many studies compare outcomes between ADAPT and SR; however, there has yet to be a large multicenter investigation comparing ADAPT and SR to Solumbra.
Methods:
All patients from the participating STAR collaboration who underwent MT from 2015-2019 were included. Patients were analyzed by first MT technique utilized (ADAPT, SR, or Solumbra). Univariable and multivariable linear regression was utilized to analyze the MT technique association to number of thrombectomy attempts and procedure time. Univariable and multivariable logistic regression was utilized to determine the association between MT technique and the following outcomes: recanalization, symptomatic hemorrhage, 90-day functional independence, or 90-day mortality. P value less than 0.5 was considered significant.
Results:
A total of 2515 MT for stroke were identified: 1155 (46%) ADAPT, 735 (29%) SR, 625 (25%) Solumbra. Patients who received Solumbra MT were older (p<0.001), had higher IV-tPA administration rates (p<0.01), and lower onset-groin times (p<0.01). Separate multivariable linear regression analyses revealed that Solumbra technique had significantly high procedure times (OR 10.2, p<0.001) but less thrombectomy attempts (OR -0.8, p<0.001) compared to other MT techniques. There was no difference in recanalization success between techniques (ADAPT 85%, SR 84%, Solumbra 86%). Compared to Solumbra, ADAPT and SR thrombectomy had significantly lower incidence of symptomatic hemorrhage (ADAPT OR 0.32, p=0.009; SR OR 0.39, p=0.039) and ADAPT had a significantly lower likelihood of mortality (OR 0.50, p<0.001). There was no difference in 90-day functional independence (mRS≤2) rates between MT techniques.
Conclusion:
Compared to standard ADAPT and SR thrombectomy, the Solumbra technique for MT is a longer procedure that results in an increased likelihood of hemorrhage and 90-day mortality.
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Affiliation(s)
| | - Vasu Saini
- Neurology, Miami Miller Sch of Medicine, Miami, FL
| | | | - Evan Luther
- Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
| | | | - Adam Arthur
- Baptist Memorial Hosp-Memphis, Tennessee, TN
| | - Joon-Tae Kim
- Chonnam National Univ Hosp,, Gwangju, Korea, Republic of
| | | | - Ilko Maier
- Univ Med Cntr Goettingen, Goettingen, Germany
| | | | | | | | | | | | | | | | | | | | - Robert Starke
- Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
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Saini V, Chalhoub RM, McCarthy DJ, Alawieh AM, Chen SH, Luther EM, Kan P, Keyrouz S, De Leacy R, Arthur A, Kim JT, Psychogios M, Rai A, Fargen K, Dumont T, Maier I, Peterson EC, Yavagal DR, Spiotta A, Starke RM. Abstract TP24: Radiological and Symptomatic Hemorrhagic Transformation Post Endovascular Thrombectomy for Both Anterior and Posterior Large Vessel Occlusion Ischemic Stroke - Insights From STAR Collaboration. Stroke 2020. [DOI: 10.1161/str.51.suppl_1.tp24] [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] [Indexed: 11/16/2022]
Abstract
Introduction:
Radiological hemorrhagic transformation (rHT) and symptomatic intracranial hemorrhage (sICH) remain a major complication of mechanical thrombectomy (MT) in acute stroke. Our aim is to identify independent predictors of rHT and sICH.
Methods:
A retrospective multicenter international study across the US and Europe included 2499 patients, 18 years or older, who underwent EVT for acute stroke from 2015-2019. rHT is defined as any intracranial hemorrhage post MT and subgrouped per ECASS II as petechial (HI), parenchymal hematoma without (PH1) and with mass effect (PH2) and subarachnoid hemorrhage (SAH). sICH was defined as presence of PH2 or SAH. Functional outcomes were described using the 90-day modified Rankin score (mRS) as “good” 0-2 or “poor” 3-6. Multivariable logistic regression model was used to identify predictors of rHT and sICH.
Results:
600 (24%) had rHT and 145 (5.8%) had sICH. On multivariable regression model, independent predictors for both rHT and sICH were higher admission NIHSS (OR 1.03, p<.001 vs. OR 1.04, p<.001), lower ASPECTS (OR .82, p<.001 vs. OR .83, p<.001) and higher number of thrombectomy attempts (OR 1.08, p.013 vs. OR 1.08, p .014). Patients with hyperlipidemia (OR .77, p .03 vs. OR .75, p.02) or posterior circulation strokes (OR .59, p .013 vs. OR .58, p .01) had significantly lower rates of rHT and sICH. Both rHT and sICH are independently associated with poor functional outcomes (OR .5, p<.001; OR .29, p .006).
Conclusion:
Compared to posterior circulation, anterior circulation strokes have higher rates of rHT and sICH. Baseline hyperlipidemia is protective for rHT or sICH post MT and this association needs further study. Clinical severity of stroke, poor ASPECTS on admission and higher thrombectomy attempts are associated with higher rates of rHT or sICH. Both rHT and sICH are independently associated with poor functional outcomes.
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Affiliation(s)
- Vasu Saini
- Univ of Miami, Miller Sch of Medicine, Miami, FL
| | | | | | | | | | | | - Peter Kan
- Baylor College of Medicine, Houston, TX
| | | | | | - Adam Arthur
- The Univ of Tennessee Health Science Cntr, Memphis, TN
| | - Joon-Tae Kim
- Chonnam National Univ Hosp, South Korea, Kwangju, Korea, Republic of
| | | | | | - Kyle Fargen
- Wake Forest Baptist Health, Winston-Salem, NC
| | | | - Ilko Maier
- Universitätsmedizin Göttingen, Göttingen, Germany
| | | | | | | | - Robert M Starke
- Neurosurgery, Univ of Miami, Miller Sch of Medicine, Miami, FL
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29
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Saini V, Chen SH, McCarthy DJ, Brunet MC, Khandelwal P, Peterson EC, Starke RM, Asdaghi N, Yavagal DR. Abstract TP22: Longer Procedure Time in General Anesthesia versus Conscious Sedation During Mechanical Thrombectomy for Large Vessel Occlusion Ischemic Stroke. Stroke 2020. [DOI: 10.1161/str.51.suppl_1.tp22] [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] [Indexed: 11/16/2022]
Abstract
Introduction:
There is no definitive evidence currently to guide the choice between general anesthesia (GA) over conscious sedation (CS) for patients undergoing mechanical thrombectomy (MT). As MT outcomes are highly time-sensitive especially in the early time window, we aim to evaluate work-flow metrics and outcome differences between the two approaches in routine clinical practice at a Comprehensive Stroke Center (CSC).
Methods:
From 2/2015-9/2018, 329 consecutive MT patients were included from a large retrospective CSC database. In late 2017, we implemented a first-choice GA protocol at our CSC from a first choice CS for MT. Baseline characteristics, work-flow metrics and outcomes measures: mRS at discharge, mRS last follow-up (median, IQR 184 days, 37.25-202.5), radiological hemorrhagic conversion (rHT) and symptomatic intracranial hemorrhage (sICH) defined as rHT with post-MT (4-24 hours) NIHSS worsening ≥4, were examined. Multivariate logistic regression model was used to compare workflow and outcomes in GA vs. CS patients.
Results:
82 (25.2%) patients received GA and 246 (74.8%) received CS. Baseline characteristics show significantly higher baseline HTN (p .043) and posterior circulation strokes (p .02) in GA patients. Compared to CS, patients undergoing GA had significantly longer procedure times 54±35 vs. 37±22min (OR .98, 95%CI .97-.996) but no difference in onset- or door-to-puncture times. Both had similar first pass success ~57% vs. 53% (p .59), number of attempts 1(1-2) vs. 1(1-2) (p .94) and rate of TICI 2b-3 ~87% vs. 84% (p .85). On multivariate regression, there was no significant difference in outcome measures between GA and CS: rHT (OR 1.1, 95%CI .64-1.9), sICH (OR 1.15, 95%CI .41-3.2), mRS at discharge (OR .75, 95%CI .176-3.22) and mRS at last follow-up (OR 1.05, 95%CI .53-2.08).
Conclusion:
In routine clinical practice, compared to CS, patients who underwent GA for MT had no difference in clinical outcomes, despite longer procedure times.
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Affiliation(s)
- Vasu Saini
- Neurology, Univ of Miami, Miller Sch of Medicine, Miami, FL
| | | | | | - Marie C Brunet
- Neurosurgery, Univ of Miami, Miller Sch of Medicine, Miami, FL
| | | | - Eric C Peterson
- Neurosurgery, Univ of Miami, Miller Sch of Medicine, Miami, FL
| | - Robert M Starke
- Neurosurgery, Univ of Miami, Miller Sch of Medicine, Miami, FL
| | - Negar Asdaghi
- Neurology, Univ of Miami, Miller Sch of Medicine, Miami, FL
| | - Dileep R Yavagal
- Neurology and Neurosurgery, Univ of Miami, Miller Sch of Medicine, Miami, FL
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Luther E, McCarthy DJ, Brunet MC, Sur S, Chen SH, Sheinberg D, Hasan D, Jabbour P, Yavagal DR, Peterson EC, Starke RM. Treatment and diagnosis of cerebral aneurysms in the post-International Subarachnoid Aneurysm Trial (ISAT) era: trends and outcomes. J Neurointerv Surg 2020; 12:682-687. [PMID: 31959634 DOI: 10.1136/neurintsurg-2019-015418] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [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: 09/06/2019] [Revised: 12/02/2019] [Accepted: 12/04/2019] [Indexed: 11/03/2022]
Abstract
BACKGROUND Following publication of the International Subarachnoid Aneurysm Trial (ISAT), treatment paradigms for cerebral aneurysms (CAs) shifted from open surgical clipping to endovascular embolization as primary therapy in a majority of cases. However, comprehensive analyses evaluating more recent CA diagnosis patterns, patient populations and outcomes as a function of treatment modality remain rare. METHODS The National Inpatient Sample from 2004 to 2014 was reviewed. Aneurysmal subarachnoid hemorrhages (aSAHs) and unruptured intracranial aneurysms (UIAs) with a treatment of surgical clipping or endovascular therapy (EVT) were identified. Time trend series plots were created. Linear and logistic regressions were utilized to quantify treatment changes. RESULTS 114 137 aSAHs and 122 916 UIAs were reviewed. aSAH (+732/year, p=0.014) and UIA (+2550/year, p<0.0001) discharges increased annually. The annual caseload of surgical clippings for aSAH decreased (-264/year, p=0.0002) while EVT increased (+366/year, p=0.0003). For UIAs, the annual caseload for surgical clipping remained stable but increased for EVT (+615/year, p<0.0001). The rate of incidentally diagnosed UIAs increased annually (+1987/year; p<0.0001). Inpatient mortality decreased for clipping (p<0.0001) and EVT in aSAH (p<0.0001) (2004 vs 2014-clipping 13% vs 11.7%, EVT 15.8% vs 12.7%). Mortality rates for clipped UIAs decreased over time (p<0.0001) and remained stable for EVT (2004 vs 2014-clipping 1.57% vs 0.40%, EVT 0.59% vs 0.52%). CONCLUSION Ruptured and unruptured CAs are increasingly being treated with EVT over clipping. Incidental unruptured aneurysm diagnoses are increasing dramatically. Mortality rates of ruptured aneurysms are improving regardless of treatment modality, whereas mortality in unruptured aneurysms is only improving for surgical clipping.
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Affiliation(s)
- Evan Luther
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA .,Neurosurgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Marie-Christine Brunet
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Samir Sur
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Stephanie H Chen
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Dallas Sheinberg
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - David Hasan
- Neurological Surgery, University of Iowa, Iowa City, Iowa, USA
| | - Pascal Jabbour
- Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Dileep R Yavagal
- Neurology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Eric C Peterson
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Robert M Starke
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
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McCarthy DJ, Sur S, Fortunel A, Snelling B, Luther E, Yavagal D, Peterson E, Starke RM. Predictors of Balloon Guide Catheter Assistance Success in Stent-retrieval Thrombectomy for an Anterior Circulation Acute Ischemic Stroke. Cureus 2019; 11:e5350. [PMID: 31602354 PMCID: PMC6779151 DOI: 10.7759/cureus.5350] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction Mechanical thrombectomy has become the standard treatment for large vessel occlusion (LVO) in acute ischemic stroke (AIS) in well-selected patients. Although many devices and strategies exist, the use of a balloon-tip guide catheter (BGC) with stent-retriever (SR) may hold several advantages. We aim to assess the efficacy and identify predictors of technical success of this unique approach. Methods From our prospectively maintained database, we identified consecutive cases in which a BGC was used for stent-retriever thrombectomy in anterior circulation LVO between 2015 and 2016. Baseline and procedural characteristics were captured and analyzed. Predictors of technical and clinical outcomes were identified by multivariable logistic regression analysis. Results Ninety-three patients with AIS-LVO were treated with BGC-assisted mechanical thrombectomy. The mean age was 71 years old (SD 14), with 49.5% male (n=46). Pre-operative IV-tPA was administered in 55.9% (n=52) of cases. The most common location of occlusive thrombus was M1 (64.5%, n=60). Successful recanalization (mTICI=2b-3) was achieved in 86.0% (n=80) of cases while complete revascularization (mTICI-3) was achieved in 56.5% (n=52). There was a first-pass success rate of 52.7% (n=49). At discharge, 38.7% of the patients were functionally independent (mRS≤2). Multivariate analysis revealed that the middle cerebral artery location was strongly predictive of first-pass success, resulting in mTICI =2b revascularization (OR 7.10, p=0.018). Additionally, female gender (OR 2.85, p=0.042) and decreasing mTICI were associated with a poor clinical outcome (mRS≥4; OR 1.76, p=0.008). Conclusions BGC assistance in stent retrieval thrombectomy is safe and effective for AIS due to anterior circulation LVO. Further investigation is required to elucidate the optimal treatment strategy based on patient and disease characteristics.
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Affiliation(s)
- David J McCarthy
- Neurosurgery, University of Miami Miller School of Medicine, Miami, USA
| | - Samir Sur
- Neurosurgery, University of Miami Miller School of Medicine, Miami, USA
| | - Adisson Fortunel
- Neurosurgery, University of Miami Miller School of Medicine, Miami, USA
| | - Brian Snelling
- Neurosurgery, Boca Raton Regional Hospital, Boca Raton, USA
| | - Evan Luther
- Neurosurgery, University of Miami Miller School of Medicine, Miami, USA
| | - Dileep Yavagal
- Neuroendovascular Surgery, University of Miami Miller School of Medicine, Miami, USA
| | - Eric Peterson
- Neurosurgery, University of Miami Miller School of Medicine, Miami, USA
| | - Robert M Starke
- Neurosurgery, University of Miami Miller School of Medicine, Miami, USA
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Thompson JW, Elwardany O, McCarthy DJ, Sheinberg DL, Alvarez CM, Nada A, Snelling BM, Chen SH, Sur S, Starke RM. In vivo cerebral aneurysm models. Neurosurg Focus 2019; 47:E20. [DOI: 10.3171/2019.4.focus19219] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 04/09/2019] [Indexed: 11/06/2022]
Abstract
Cerebral aneurysm rupture is a devastating event resulting in subarachnoid hemorrhage and is associated with significant morbidity and death. Up to 50% of individuals do not survive aneurysm rupture, with the majority of survivors suffering some degree of neurological deficit. Therefore, prior to aneurysm rupture, a large number of diagnosed patients are treated either microsurgically via clipping or endovascularly to prevent aneurysm filling. With the advancement of endovascular surgical techniques and devices, endovascular treatment of cerebral aneurysms is becoming the first-line therapy at many hospitals. Despite this fact, a large number of endovascularly treated patients will have aneurysm recanalization and progression and will require retreatment. The lack of approved pharmacological interventions for cerebral aneurysms and the need for retreatment have led to a growing interest in understanding the molecular, cellular, and physiological determinants of cerebral aneurysm pathogenesis, maturation, and rupture. To this end, the use of animal cerebral aneurysm models has contributed significantly to our current understanding of cerebral aneurysm biology and to the development of and training in endovascular devices. This review summarizes the small and large animal models of cerebral aneurysm that are being used to explore the pathophysiology of cerebral aneurysms, as well as the development of novel endovascular devices for aneurysm treatment.
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Affiliation(s)
- John W. Thompson
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Omar Elwardany
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - David J. McCarthy
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Dallas L. Sheinberg
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Carlos M. Alvarez
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Ahmed Nada
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Brian M. Snelling
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
- 4Marcus Neuroscience Institute, Boca Raton Regional Hospital, Boca Raton, Florida
| | - Stephanie H. Chen
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Samir Sur
- Departments of 1Neurological Surgery and
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
| | - Robert M. Starke
- Departments of 1Neurological Surgery and
- 2Radiology, University of Miami
- 3The University of Miami Cerebrovascular Initiative, University of Miami; and
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Chen SH, McCarthy DJ, Sheinberg D, Hanel R, Sur S, Jabbour P, Atallah E, Chalouhi N, Dumont A, Amenta P, Hasan D, Raper D, Liu K, Jane JA, Crowley RW, Aguilar-Salinas P, Bentley J, Monteith S, Mitchell BD, Yavagal DR, Peterson EC, Starke RM. Pipeline Embolization Device for the Treatment of Intracranial Pseudoaneurysms. World Neurosurg 2019; 127:e86-e93. [PMID: 30849553 DOI: 10.1016/j.wneu.2019.02.135] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 11/19/2018] [Revised: 02/16/2019] [Accepted: 02/18/2019] [Indexed: 12/01/2022]
Abstract
BACKGROUND Intracranial pseudoaneurysms (PSAs) are associated with high rupture and mortality rates and have traditionally been treated by parent vessel sacrifice. There has been recent interest in using flow-diverting devices for treatment of these complex lesions while preserving flow through the parent artery. The objective of this study is to examine the safety and efficacy of these devices in the treatment of intracranial PSA. METHODS We performed a multi-institutional retrospective study of intracranial PSAs treated with the Pipeline Embolization Device (PED) between 2014 and 2017 at 7 institutions. Complications and clinical and radiographic outcomes were reviewed. RESULTS A total of 19 patients underwent PED placement for intracranial PSA. Iatrogenic injury and trauma comprised most etiologies in our series. The mean pseudoaneurysm diameter was 8.8 mm, and 18 of 19 PSAs (95%) involved the internal carotid artery (ICA). Multiple PEDs were deployed in a telescoping fashion in 7 patients (37%). Of the 18 patients with follow up imaging, 14 (78%) achieved complete pseudoaneurysm obliteration and 2 achieved near-complete obliteration (11%). Two patients (11%) were found to have significant pseudoaneurysm progression on short-term follow-up and required ICA sacrifice. No patients experienced new neurologic deficits or deterioration secondary to PED placement. No patients experienced bleeding or rebleeding from PSA. CONCLUSIONS In well-selected patients, the use of flow-diverting stents may be a feasible alternative to parent vessel sacrifice. Given the high morbidity and mortality associated with PSA, we recommend short- and long-term radiographic follow-up for patients treated with flow-diverting stents.
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Affiliation(s)
- Stephanie H Chen
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA.
| | - Dallas Sheinberg
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Ricardo Hanel
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA; Department of Neurological Surgery, Baptist Health, Miami, Florida, USA
| | - Samir Sur
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Pascal Jabbour
- Department of Neurological Surgery, Jefferson University, Philadelphia, Pennsylvania, USA
| | - Elias Atallah
- Department of Neurological Surgery, Jefferson University, Philadelphia, Pennsylvania, USA
| | - Nohra Chalouhi
- Department of Neurological Surgery, Jefferson University, Philadelphia, Pennsylvania, USA
| | - Aaron Dumont
- Department of Neurological Surgery, Tulane Medical Center, New Orleans, Louisiana, USA
| | - Peter Amenta
- Department of Neurological Surgery, Tulane Medical Center, New Orleans, Louisiana, USA
| | - David Hasan
- Department of Neurological Surgery, University of Iowa, Iowa City, Iowa, USA
| | - Daniel Raper
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Kenneth Liu
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - John A Jane
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - R Webster Crowley
- Department of Neurological Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | | | - Josh Bentley
- Department of Neurological Surgery, Swedish Health, Seattle, Washington, USA
| | - Stephen Monteith
- Department of Neurological Surgery, Swedish Health, Seattle, Washington, USA
| | - Bartley D Mitchell
- Department of Neurological Surgery, Methodist Institute, Houston, Texas, USA
| | - Dileep R Yavagal
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Eric C Peterson
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
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Sheinberg DL, McCarthy DJ, Elwardany O, Bryant JP, Luther E, Chen SH, Thompson JW, Starke RM. Endothelial dysfunction in cerebral aneurysms. Neurosurg Focus 2019; 47:E3. [PMID: 31389675 DOI: 10.3171/2019.4.focus19221] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Endothelial cell (EC) dysfunction is known to contribute to cerebral aneurysm (CA) pathogenesis. Evidence shows that damage or injury to the EC layer is the first event in CA formation. The mechanisms behind EC dysfunction in CA disease are interrelated and include hemodynamic stress, hazardous nitric oxide synthase (NOS) activity, oxidative stress, estrogen imbalance, and endothelial cell-to-cell junction compromise. Abnormal variations in hemodynamic stress incite pathological EC transformation and inflammatory zone formation, ultimately leading to destruction of the vascular wall and aneurysm dilation. Hemodynamic stress activates key molecular pathways that result in the upregulation of chemotactic cytokines and adhesion molecules, leading to inflammatory cell recruitment and infiltration. Concurrently, oxidative stress damages EC-to-EC junction proteins, resulting in interendothelial gap formation. This further promotes leukocyte traffic into the vessel wall and the release of matrix metalloproteinases, which propagates vascular remodeling and breakdown. Abnormal hemodynamic stress and inflammation also trigger adverse changes in NOS activity, altering proper EC mediation of vascular tone and the local inflammatory environment. Additionally, the vasoprotective hormone estrogen modulates gene expression that often suppresses these harmful processes. Crosstalk between these sophisticated pathways contributes to CA initiation, progression, and rupture. This review aims to outline the complex mechanisms of EC dysfunction in CA pathogenesis.
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Zanaty M, Howard S, Roa JA, Alvarez CM, Kung DK, McCarthy DJ, Samaniego EA, Nakagawa D, Starke RM, Limaye K, Al Kasab S, Chalouhi N, Jabbour P, Torner J, Tranel D, Hasan D. Cognitive and cerebral hemodynamic effects of endovascular recanalization of chronically occluded cervical internal carotid artery: single-center study and review of the literature. J Neurosurg 2019; 132:1158-1166. [PMID: 30925474 DOI: 10.3171/2019.1.jns183337] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 11/29/2018] [Accepted: 01/10/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Revascularization of a symptomatic, medically refractory, cervical chronically occluded internal carotid artery (COICA) using endovascular techniques (ETs) has surfaced as a viable alternative to extracranial-intracranial bypass. The authors aimed to assess the safety, success, and neurocognitive outcomes of recanalization of COICA using ETs or hybrid treatment (ET plus carotid endarterectomy) and to identify candidate radiological markers that could predict success. METHODS The authors performed a retrospective analysis of their prospectively collected institutional database and used their previously published COICA classification to assess the potential benefits of ETs or hybrid surgery to revascularize symptomatic patients with COICA. Subjects who had undergone CT perfusion (CTP) imaging and Montreal Cognitive Assessment (MoCA) testing, both pre- and postprocedure, were included. The authors then performed a review of the literature on patients with COICA to further evaluate the success and safety of these treatment alternatives. RESULTS The single-center study revealed 28 subjects who had undergone revascularization of symptomatic COICA. Five subjects had CTP imaging and MoCA testing pre- and postrevascularization and thus were included in the study. All 5 patients had very large penumbra involving the entire hemisphere supplied by the ipsilateral COICA, which resolved postoperatively. Significant improvement in neurocognitive outcome was demonstrated by MoCA testing after treatment (preprocedure: 19.8 ± 2.4, postprocedure: 27 ± 1.6; p = 0.0038). Moreover, successful revascularization of COICA led to full restoration of cerebral hemodynamics in all cases. Review of the literature identified a total of 333 patients with COICA. Of these, 232 (70%) showed successful recanalization after ETs or hybrid surgery, with low major and minor complication rates (3.9% and 2.7%, respectively). CONCLUSIONS ETs and hybrid surgery are safe and effective alternatives to revascularize patients with symptomatic COICA. CTP imaging could be used as a radiological marker to assess cerebral hemodynamics and predict the success of revascularization. Improvement in CTP parameters is associated with significant improvement in neurocognitive functions.
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Affiliation(s)
| | - Susanna Howard
- 2Department of Neurosurgery, University of Chicago Pritzker School of Medicine, Chicago, Illinois
| | | | | | - David K Kung
- 4Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - David J McCarthy
- 5Departments of Neurosurgery and Radiology, University of Miami, Florida
| | - Edgar A Samaniego
- Departments of1Neurosurgery.,3Neurology, and.,6Radiology, University of Iowa Hospitals and Clinics, Iowa City, Iowa
| | - Daichi Nakagawa
- 7Department of Neurosurgery, The University of Tokyo Hospital, Tokyo, Japan
| | - Robert M Starke
- 5Departments of Neurosurgery and Radiology, University of Miami, Florida
| | | | | | - Nohra Chalouhi
- 8Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania; and
| | - Pascal Jabbour
- 8Department of Neurological Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania; and
| | | | - Daniel Tranel
- 10Neurology, and.,11Psychological and Brain Sciences, University of Iowa, Iowa City, Iowa
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Starke RM, McCarthy DJ, Chen CJ, Kano H, McShane BJ, Lee J, Patibandla MR, Mathieu D, Vasas LT, Kaufmann AM, Wang WG, Grills IS, Cifarelli CP, Paisan G, Vargo J, Chytka T, Janouskova L, Feliciano CE, Sujijantarat N, Matouk C, Chiang V, Hess J, Rodriguez-Mercado R, Tonetti DA, Lunsford LD, Sheehan JP. Hemorrhage risk of cerebral dural arteriovenous fistulas following Gamma Knife radiosurgery in a multicenter international consortium. J Neurosurg 2019; 132:1209-1217. [PMID: 30875690 DOI: 10.3171/2018.12.jns182208] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 07/31/2018] [Accepted: 12/12/2018] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The authors performed a study to evaluate the hemorrhagic rates of cerebral dural arteriovenous fistulas (dAVFs) and the risk factors of hemorrhage following Gamma Knife radiosurgery (GKRS). METHODS Data from a cohort of patients undergoing GKRS for cerebral dAVFs were compiled from the International Radiosurgery Research Foundation. The annual posttreatment hemorrhage rate was calculated as the number of hemorrhages divided by the patient-years at risk. Risk factors for dAVF hemorrhage prior to GKRS and during the latency period after radiosurgery were evaluated in a multivariate analysis. RESULTS A total of 147 patients with dAVFs were treated with GKRS. Thirty-six patients (24.5%) presented with hemorrhage. dAVFs that had any cortical venous drainage (CVD) (OR = 3.8, p = 0.003) or convexity or torcula location (OR = 3.3, p = 0.017) were more likely to present with hemorrhage in multivariate analysis. Half of the patients had prior treatment (49.7%). Post-GRKS hemorrhage occurred in 4 patients, with an overall annual risk of 0.84% during the latency period. The annual risks of post-GKRS hemorrhage for Borden type 2-3 dAVFs and Borden type 2-3 hemorrhagic dAVFs were 1.45% and 0.93%, respectively. No hemorrhage occurred after radiological confirmation of obliteration. Independent predictors of hemorrhage following GKRS included nonhemorrhagic neural deficit presentation (HR = 21.6, p = 0.027) and increasing number of past endovascular treatments (HR = 1.81, p = 0.036). CONCLUSIONS Patients have similar rates of hemorrhage before and after radiosurgery until obliteration is achieved. dAVFs that have any CVD or are located in the convexity or torcula were more likely to present with hemorrhage. Patients presenting with nonhemorrhagic neural deficits and a history of endovascular treatments had higher risks of post-GKRS hemorrhage.
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Affiliation(s)
- Robert M Starke
- 1Department of Neurological Surgery, University of Miami, Florida
| | - David J McCarthy
- 1Department of Neurological Surgery, University of Miami, Florida
| | - Ching-Jen Chen
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
| | - Hideyuki Kano
- 3Department of Neurological Surgery, University of Pittsburgh
| | - Brendan J McShane
- 4Department of Neurological Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - John Lee
- 4Department of Neurological Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Mohana Rao Patibandla
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
| | - David Mathieu
- 5Department of Neurological Surgery, University of Sherbrooke, Quebec, Canada
| | - Lucas T Vasas
- 6Department of Neurological Surgery, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Anthony M Kaufmann
- 6Department of Neurological Surgery, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Wei Gang Wang
- 7Department of Radiation Oncology, Beaumont Health System, Royal Oak, Michigan
| | - Inga S Grills
- 7Department of Radiation Oncology, Beaumont Health System, Royal Oak, Michigan
| | | | - Gabriella Paisan
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
| | - John Vargo
- 9Radiation Oncology, West Virginia University, Morgantown, West Virginia
| | - Tomas Chytka
- 10Department of Neurological Surgery, Na Homolce Hospital, Prague, Czech Republic
| | - Ladislava Janouskova
- 10Department of Neurological Surgery, Na Homolce Hospital, Prague, Czech Republic
| | - Caleb E Feliciano
- 11Department of Neurological Surgery, University of Puerto Rico, San Juan, Puerto Rico; and
| | - Nanthiya Sujijantarat
- 12Department of Neurological Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Charles Matouk
- 12Department of Neurological Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Veronica Chiang
- 12Department of Neurological Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Judith Hess
- 12Department of Neurological Surgery, Yale University School of Medicine, New Haven, Connecticut
| | | | | | - L Dade Lunsford
- 3Department of Neurological Surgery, University of Pittsburgh
| | - Jason P Sheehan
- 2Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia
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Richardson AM, McCarthy DJ, Sandhu J, Mayrand R, Guerrero C, Rosenberg C, Gernsback JE, Komotar R, Ivan M. Predictors of Successful Discharge of Patients on Postoperative Day 1 After Craniotomy for Brain Tumor. World Neurosurg 2019; 126:e869-e877. [PMID: 30862575 DOI: 10.1016/j.wneu.2019.03.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [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: 11/13/2018] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND Shorter hospital stays have been associated with decreased complication rates, fewer hospital-acquired infections, and lower costs. We evaluated an optimized treatment paradigm for patients undergoing craniotomy allowing for postoperative day 1 (POD1) discharge if the criteria were met. We compared the complication and readmission rates between the POD1 patients and those with longer stays, and examined the patient and surgical variables for predictors of POD1 discharge. METHODS We performed a retrospective review of craniotomies performed for tumor from 2011 to 2015. Craniotomies for tumors were included, and laser ablations and biopsies were excluded. RESULTS A total 424 of patients were included, 132 (31%) of whom had been discharged on POD1. The mean length of stay was 6 days. The POD1 patients had had significantly better preoperative Karnofsky performance scale scores (P < 0.0001) and modified Rankin scale scores (P < 0.0001). Patient frailty, measured using the modified frailty index, was negatively predictive of POD1 discharge (P = 0.0183). Surgical factors predictive of early discharge were awake surgery (P < 0.0001) and supratentorial location (P < 0.0001). No POD1 patients experienced deep venous thrombosis (DVT), pulmonary embolus (PE), or urinary tract infections. However, of the patients with a length of stay >1 day, 4.4% and 2.7% developed DVT or PE (P = 0.0119) and urinary tract infections (P = 0.0202), respectively. Multivariate regression identified patient factors (male gender, low preoperative modified Rankin scale score), tumor factors (right-sided, supratentorial, smaller size), lower modified frailty index score, and operative factors (lack of a cerebrospinal fluid drain, awake surgery) as independent predictors of successful early discharge. CONCLUSIONS Patients with good functional status can be safely discharged on POD1 after tumor craniotomy if the appropriate postoperative criteria have been met. Patients with early discharge had lower 30-day readmission and DVT/PE rates, likely owing to better baseline health status.
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Affiliation(s)
- Angela M Richardson
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - David J McCarthy
- Miller School of Medicine, University of Miami, Miami, Florida, USA.
| | | | - Roxanne Mayrand
- Department of Neuroscience, University of Miami, Miami, Florida, USA
| | | | - Cathy Rosenberg
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Joanna E Gernsback
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Ricardo Komotar
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
| | - Michael Ivan
- Department of Neurological Surgery, University of Miami, Miami, Florida, USA
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Brunet MC, Chen SH, Sur S, McCarthy DJ, Snelling B, Yavagal DR, Starke RM, Peterson EC. Distal transradial access in the anatomical snuffbox for diagnostic cerebral angiography. J Neurointerv Surg 2019; 11:710-713. [PMID: 30814329 DOI: 10.1136/neurintsurg-2019-014718] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [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: 01/10/2019] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 01/28/2023]
Abstract
BACKGROUND The transradial approach for endovascular angiography and interventional procedures is superior to the traditional transfemoral approach in several metrics, including lower access-site complication rates, higher patient satisfaction, and lower hospital costs. Interventional cardiologists have begun to adopt the distal transradial approach (dTRA) for coronary interventions as it has an improved safety profile and improved procedural ergonomics. Adaptation of dTRA for neuroendovascular procedures promises similar benefit, but requires a learning curve. OBJECTIVE To report the first use of dTRA for diagnostic cerebral angiography and demonstrate the feasibility and safety of a dTRA. METHODS A retrospective review of our prospective institutional database of consecutive cases of cerebral DSA performed via dTRA between August 2018 and December 2018 was performed. Patient demographics, procedural and radiographic metrics, and clinical data were recorded. RESULTS 85 patients were identified with an average age of 53.8 years (range 18-82); 67 (78.8%) patients were female. 78 patients underwent successful dTRA diagnostic cerebral angiography, with a mean of five vessels catheterized and average fluoroscopy time of 12.0 min, or 2.6 min for each vessel. Seven patients required conversion to transfemoral access, with the most common reason being inability to advance the wire and radial artery spasm. There were no complications. CONCLUSION dTRA is associated with decreased rates of radial artery occlusion, ischemic hand events, as well as improved patient comfort, faster periprocedural management, and cost benefits. Our preliminary experience with dTRA for diagnostic cerebral angiography demonstrates excellent feasibility and safety in combination with relative efficiency.
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Affiliation(s)
- Marie-Christine Brunet
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Stephanie H Chen
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Samir Sur
- Neurological Surgery, University of Miami MILLER School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Neurosurgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Brian Snelling
- Neurological Surgery, University of Miami MILLER School of Medicine, Miami, Florida, USA
| | - Dileep R Yavagal
- Neurology and Neurosurgery, University of Miami, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA.,University of Miami School of Medicine, Miami, Florida, USA
| | - Eric C Peterson
- Neurological Surgery, University of Miami MILLER School of Medicine, Miami, Florida, USA
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Chen SH, Snelling BM, Sur S, Shah SS, McCarthy DJ, Luther E, Yavagal DR, Peterson EC, Starke RM. Transradial versus transfemoral access for anterior circulation mechanical thrombectomy: comparison of technical and clinical outcomes. J Neurointerv Surg 2019; 11:874-878. [PMID: 30670623 DOI: 10.1136/neurintsurg-2018-014485] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [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: 10/05/2018] [Revised: 12/30/2018] [Accepted: 01/01/2019] [Indexed: 11/03/2022]
Abstract
BackgroundA transradial approach (TRA) is associated with fewer access site complications than a transfemoral technique (TFA).However, there is concern that performing mechanical thrombectomy (MT) via TRA may lead to longer revascularization times and thus worse outcomes. Nonetheless, TRA may confer added benefits in MT since navigation of challenging aortic arch and carotid anatomy is often facilitated by a right radial artery trajectory.ObjectiveTo compare outcomes in patients who underwent MT via TRA versus TFA.MethodsWe performed a retrospective review of our institutional database to identify 51 patients with challenging vascular anatomy who underwent MT for anterior circulation large vessel occlusion between February 2015 and February 2018. Patient characteristics, procedural techniques, and outcomes were recorded. TFA and TRA cohorts were compared.ResultsOf the 51 patients, 18 (35%) underwent MT via TRA. There were no significant cohort differences in patient characteristics, clot location, or aortic arch type and presence of carotid tortuosity. There were no significant differences in outcomes between the two cohorts, including single-pass recanalization rate (54.5% vs 55.6%, p=0.949) and average number of passes (1.9 vs 1.7, p=0.453). Mean access-to-reperfusion time (61.9 vs 61.1 min, p=0.920), successful revascularization rates (Thrombolysis in Cerebral Infarction score ≥2b 87.9% vs 88.9%, p=1.0) and functional outcomes (modified Rankin Scale score≤2, 39.4% vs 33.3%, p=0.669) were similar between TFA and TRA cohorts, respectively.ConclusionsOur results demonstrate equivalence in efficacy and efficiency between TRA and TFA for MT of anterior circulation large vessel occlusion in patients with challenging vascular anatomy. TRA may be better than TFA in well-selected patients undergoing MT.
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Affiliation(s)
- Stephanie H Chen
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Brian M Snelling
- Marcus Neuroscience Institute, Boca Raton Regional Hospital, Boca Raton, Florida, USA
| | - Samir Sur
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Sumedh Subodh Shah
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Evan Luther
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Dileep R Yavagal
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Eric C Peterson
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida, USA
- Department of Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
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Shah SS, Snelling BM, Brunet MC, Sur S, McCarthy DJ, Stein A, Khandelwal P, Starke RM, Peterson EC. Transradial Mechanical Thrombectomy for Proximal Middle Cerebral Artery Occlusion in a First Trimester Pregnancy: Case Report and Literature Review. World Neurosurg 2018; 120:415-419. [DOI: 10.1016/j.wneu.2018.09.095] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 11/16/2022]
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McCarthy DJ, Chen SH, Brunet MC, Shah S, Peterson E, Starke RM. Distal Radial Artery Access in the Anatomical Snuffbox for Neurointerventions: Case Report. World Neurosurg 2018; 122:355-359. [PMID: 30447446 DOI: 10.1016/j.wneu.2018.11.030] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [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: 10/08/2018] [Accepted: 11/03/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND The distal transradial approach (dTRA) is being widely adopted by interventional cardiologists, primarily owing to reduced morbidity and mortality from access site complications. The distal radial artery has advantages over standard radial access in relation to procedural positioning and radial artery preservation, particularly in patients who may require multiple angiograms. One disadvantage is the smaller diameter of the artery with more challenging puncture of a smaller, weaker artery. We demonstrate the feasibility of dTRA in 2 patients who underwent successful diagnostic angiography and mechanical thrombectomy. CASE DESCRIPTION Two patients underwent dTRA for neurointerventions. In patient 1, a 5-F Glidesheath Slender and a Sim2 catheter were used for a 6-vessel cerebral angiogram. In patient 2, an 0.88-inch sheathless guide catheter was used to perform a mechanical thrombectomy. Successful hemostasis in both cases was achieved with a Safeguard Radial Compression Device; no complications were observed. CONCLUSIONS Neurovascular access via dTRA is feasible, and further exploration is warranted.
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Affiliation(s)
- David J McCarthy
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.
| | - Stephanie H Chen
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Marie-Christine Brunet
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Sumedh Shah
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Eric Peterson
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
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Starke RM, McCarthy DJ, Komotar RJ, Connolly ES. New Risk Allele for Intracranial Aneurysm in French-Canadians. Neurosurgery 2018; 83:E101-E102. [PMID: 30125025 DOI: 10.1093/neuros/nyy294] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- Robert M Starke
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - David J McCarthy
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - Ricardo J Komotar
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - E Sander Connolly
- Department of Neurological Surgery Columbia University College of Physicians and Surgeons New York, New York
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Sheinberg DL, McCarthy DJ, Peterson EC, Starke RM. DEFUSE-3 Trial: Reinforcing Evidence for Extended Endovascular Intervention Time Window for Ischemic Stroke. World Neurosurg 2018; 112:275-276. [DOI: 10.1016/j.wneu.2018.02.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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McCarthy DJ, Komotar RJ, Starke RM, Connolly ES. Novel Autochthonous in vivo Model Identifies Genetic Drivers and Functional Suppressors in Glioblastoma. Neurosurgery 2018; 82:N25-N26. [PMID: 29462437 DOI: 10.1093/neuros/nyx592] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- David J McCarthy
- Department of Neurosurgery University of Miami Miller School of Medicine Miami, Florida
| | - Ricardo J Komotar
- Department of Neurosurgery University of Miami Miller School of Medicine Miami, Florida
| | - Robert M Starke
- Department of Neurosurgery University of Miami Miller School of Medicine Miami, Florida
| | - E Sander Connolly
- Department of Neurological Surgery Columbia University College of Physicians and Surgeons New York, New York
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McCarthy DJ, Sur S, Snelling B, Fortunel A, Yavagal D, Peterson E, Starke R. Abstract TP16: Predictors for Successful Mechanical Thrombectomy With Balloon Guide Catheter Assistance. Stroke 2018. [DOI: 10.1161/str.49.suppl_1.tp16] [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] [Indexed: 11/16/2022]
Abstract
Mechanical thrombectomy (MT) has become the standard treatment for large vessel occlusion (LVO) in acute ischemic stroke (AIS) in well-selected patients. Although many devices and strategies exist, use of a balloon-tip guide catheter (BGC) in conjunction with stent-retriever (SR) may hold many advantages. We aim to assess the efficacy and identify predictors of technical success of this unique approach.
We reviewed our prospectively maintained database to identify 93 consecutive cases in which a BGC was used for MT in anteriorcirculation LVO, between February 2015 and September 2016. Various preprocedural and intraprocedural variables were recorded in addition to technical and clinical outcome measures. Predictors of technical and clinical outcome were identified by univariate and multivariable logistic regression analysis.
Successful recanalization of the LVO (mTICI=2b) was achieved in 86.9% (n=80) of cases, including a first-pass success rate of 52.7% (n=49) and complete revascularization of mTICI 3 in 56.5% (n=52) of cases. Average time from groin puncture to reperfusion was 67.9 minutes. The M1 segment was the most common location of the occlusive thrombus (64.5%, n=60). Preoperative IV-tPA was administered in 55.9% (n=52) of cases and 48.4% (n=45) were functionally independent (mRS<=3) at last follow-up. Middle cerebral artery location was strongly predictive of first-pass success resulting in a TICI =2b revascularization (OR 7.10, p=0.018). Preoperative tPA bolus was a predictor of successful first pass (OR 2.88, p=0.017). Intraoperative IA-tPA administration showed increased incidence of post-operative hemorrhagic conversion (OR 4.12, p=0.018). Patients <65 years old were more likely to develop subsequent emboli (OR 2.83, p=0.053). Hemorrhagic conversion (OR 8.33, p=0.001), female gender (OR 2.85, p=0.042), and decreasing mTICI were associated with a poor clinical outcome (mRS>=4; OR 1.76, p=0.008).
BGC use in MT results in a high rate of technical success and excellent clinical outcome in anterior circulation LVOs. While the optimal strategy for performing thrombectomy is unclear, our data suggest BGC in combination with SR may be most effective in removing MCA clots.
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Affiliation(s)
- David J McCarthy
- Endovascular Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
| | - Samir Sur
- Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
| | | | - Adisson Fortunel
- Endovascular Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
| | - Dileeep Yavagal
- Endovascular Neurology, Miami Miller Sch of Medicine, Miami, FL
| | - Eric Peterson
- Endovascular Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
| | - Robert Starke
- Endovascular Neurosurgery, Miami Miller Sch of Medicine, Miami, FL
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Starke RM, McCarthy DJ, Komotar RJ, Connolly ES. Contact Aspiration or Stent Retrieval Thrombectomy for Acute Ischemic Stroke due to Large Vessel Occlusion. Neurosurgery 2018; 82:N10-N11. [PMID: 29244133 DOI: 10.1093/neuros/nyx529] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- Robert M Starke
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - David J McCarthy
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - Ricardo J Komotar
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - E Sander Connolly
- Department of Neurological Surgery Columbia University College of Physicians and Surgeons New York, New York
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Starke RM, McCarthy DJ, Komotar RJ, Connolly ES. Gut Microbiome and Endothelial TLR4 Activation Provoke Cerebral Cavernous Malformations. Neurosurgery 2017; 81:N44-N46. [DOI: 10.1093/neuros/nyx450] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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McCarthy DJ, Komotar RJ, Starke RM, Connolly ES. Randomized Trial for Short-Term Radiation Therapy With Temozolomide in Elderly Patients With Glioblastoma. Neurosurgery 2017; 81:N21-N23. [PMID: 28859461 DOI: 10.1093/neuros/nyx399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- David J McCarthy
- Department of Neurosurgery University of Miami Miller School of Medicine Miami, Florida
| | - Ricardo J Komotar
- Department of Neurosurgery University of Miami Miller School of Medicine Miami, Florida
| | - Robert M Starke
- Department of Neurosurgery University of Miami Miller School of Medicine Miami, Florida
| | - E Sander Connolly
- Department of Neurological Surgery Columbia University College of Physicians and Surgeons New York, New York
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Alvarez CM, McCarthy DJ, Sur S, Snelling BM, Starke RM. Comparing Mechanical Thrombectomy Techniques in the Treatment of Large Vessel Occlusion for Acute Ischemic Stroke. World Neurosurg 2017; 100:681-682. [PMID: 28254604 DOI: 10.1016/j.wneu.2017.02.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carlos M Alvarez
- Department of Neurosurgery and Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - David J McCarthy
- Department of Neurosurgery and Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Samir Sur
- Department of Neurosurgery and Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Brian M Snelling
- Department of Neurosurgery and Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Robert M Starke
- Department of Neurosurgery and Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
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Martuscello RT, Vedam-Mai V, McCarthy DJ, Schmoll ME, Jundi MA, Louviere CD, Griffith BG, Skinner CL, Suslov O, Deleyrolle LP, Reynolds BA. A Supplemented High-Fat Low-Carbohydrate Diet for the Treatment of Glioblastoma. Clin Cancer Res 2015; 22:2482-95. [PMID: 26631612 DOI: 10.1158/1078-0432.ccr-15-0916] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 11/12/2015] [Indexed: 11/16/2022]
Abstract
PURPOSE Dysregulated energetics coupled with uncontrolled proliferation has become a hallmark of cancer, leading to increased interest in metabolic therapies. Glioblastoma (GB) is highly malignant, very metabolically active, and typically resistant to current therapies. Dietary treatment options based on glucose deprivation have been explored using a restrictive ketogenic diet (KD), with positive anticancer reports. However, negative side effects and a lack of palatability make the KD difficult to implement in an adult population. Hence, we developed a less stringent, supplemented high-fat low-carbohydrate (sHFLC) diet that mimics the metabolic and antitumor effects of the KD, maintains a stable nutritional profile, and presents an alternative clinical option for diverse patient populations. EXPERIMENTAL DESIGN The dietary paradigm was tested in vitro and in vivo, utilizing multiple patient-derived gliomasphere lines. Cellular proliferation, clonogenic frequency, and tumor stem cell population effects were determined in vitro using the neurosphere assay (NSA). Antitumor efficacy was tested in vivo in preclinical xenograft models and mechanistic regulation via the mTOR pathway was explored. RESULTS Reducing glucose in vitro to physiologic levels, coupled with ketone supplementation, inhibits proliferation of GB cells and reduces tumor stem cell expansion. In vivo, while maintaining animal health, the sHFLC diet significantly reduces the growth of tumor cells in a subcutaneous model of tumor progression and increases survival in an orthotopic xenograft model. Dietary-mediated anticancer effects correlate with the reduction of mTOR effector expression. CONCLUSIONS We demonstrate that the sHFLC diet is a viable treatment alternative to the KD, and should be considered for clinical testing. Clin Cancer Res; 22(10); 2482-95. ©2015 AACR.
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Affiliation(s)
- Regina T Martuscello
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida. Interdisciplinary Program in Biomedical Sciences, Neuroscience, College of Medicine, University of Florida, Gainesville, Florida
| | - Vinata Vedam-Mai
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida. Center for Movement Disorders and Neuro-restoration, University of Florida, Gainesville, Florida
| | - David J McCarthy
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Michael E Schmoll
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Musa A Jundi
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Christopher D Louviere
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Benjamin G Griffith
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Colby L Skinner
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Oleg Suslov
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Loic P Deleyrolle
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida.
| | - Brent A Reynolds
- Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida. Interdisciplinary Program in Biomedical Sciences, Neuroscience, College of Medicine, University of Florida, Gainesville, Florida.
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