1
|
Carrizales-Rodriguez J, Borrayo-Dorado S, Méndez-Guerrero I, Sanchez J, Rios-Ramirez F, Cardenas-Garcia Y, Abdala-Vargas N, Höllig A, Méndez-Rosito D. The Hibiscus Model: A Feasible Cadaveric Model Using Continuous Arterial Circulation for Intracranial Bypass Training and Its Validation. World Neurosurg 2023; 174:e17-e25. [PMID: 36796625 DOI: 10.1016/j.wneu.2023.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023]
Abstract
OBJECTIVE The frequency of intracranial bypass procedures has declined. Thus it is difficult for neurosurgeons to develop the necessary skills for this complex procedure. We present a perfusion-based cadaveric model to provide a realistic training experience with high anatomic and physiological fidelity, as well as instantaneous assessment of bypass patency. Validation was assessed by evaluating the educational impact and skill improvement of the participants. METHODS Fourteen participants attended a hands-on revascularization course with 7 cadaveric models connected to a continuous arterial circulation system pumping a red-colored solution through the entire cranial vasculature, mimicking blood circulation. The ability to perform a vascular anastomosis was evaluated initially. Further, a questionnaire on prior experience was provided. At the end of the 36-hour course, the ability to perform an intracranial bypass was reexamined and the participants completed a self-assessment questionnaire. RESULTS Initially, only 3 attendees were able to perform an end-to-end anastomosis within the time limit, and only 2 of these anastomoses showed adequate patency. After having accomplished the course, all participants were able to complete a patent end-to-end anastomosis within the time limit, thus demonstrating a significant improvement. Further, both overall educational gain and surgical skills were regarded as remarkable (n = 11 and n = 9). CONCLUSIONS Simulation-based education is considered an important aspect of medical and surgical development. The presented model is a feasible and accessible alternative to the prior models used for cerebral bypass training. This training may serve as a helpful and widely available tool to improve neurosurgeons' development irrespective of financial resources.
Collapse
Affiliation(s)
- Juan Carrizales-Rodriguez
- Department of Skull Base and Endoscopic Neurosurgery, Centro Médico Nacional "20 de Noviembre", Mexico City, Mexico
| | - Sheila Borrayo-Dorado
- Department of Skull Base and Endoscopic Neurosurgery, Centro Médico Nacional "20 de Noviembre", Mexico City, Mexico
| | - Ivan Méndez-Guerrero
- Department of Skull Base and Endoscopic Neurosurgery, Centro Médico Nacional "20 de Noviembre", Mexico City, Mexico
| | - Javier Sanchez
- Department of Skull Base and Endoscopic Neurosurgery, Centro Médico Nacional "20 de Noviembre", Mexico City, Mexico
| | | | | | - Nadin Abdala-Vargas
- Department of Neurological Surgery, Fundación Universitaria de Ciencias de la Salud, Hospital San Jose, Bogota, Colombia
| | - Anke Höllig
- Department of Neurosurgery, University Hospital RWTH, Aachen, Germany
| | - Diego Méndez-Rosito
- Department of Skull Base and Endoscopic Neurosurgery, Centro Médico Nacional "20 de Noviembre", Mexico City, Mexico.
| |
Collapse
|
2
|
Nguyen VN, Motiwala M, Parikh K, Miller LE, Barats M, Nickele CM, Inoa V, Elijovich L, Goyal N, Hoit DA, Arthur AS, Morcos JJ, Khan NR. Extracranial-Intracranial Cerebral Revascularization for Atherosclerotic Vessel Occlusion: An Updated Systematic Review of the Literature. World Neurosurg 2023; 173:199-207.e8. [PMID: 36758795 DOI: 10.1016/j.wneu.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND Atherosclerotic steno-occlusive cerebrovascular disease includes extracranial carotid occlusive and intracranial atherosclerotic disease. Despite the negative findings in Carotid Occlusion Surgery Study (COSS), many large centers continue to report favorable results for revascularization surgery in select groups of patients. The aim of our study was to perform an updated systematic review to investigate the role of revascularization surgery for atherosclerotic steno-occlusive patients in the modern era. METHODS Five independent reviewers performed Preferred Reporting Items for Systematic Reviews and Meta-Analyses-guided literature searches in October 2022 to identify articles reporting clinical outcomes in adult patients undergoing bypass for atherosclerotic steno-occlusive disease. Primary endpoints used were perioperative and long-term ischemic strokes, intracerebral hemorrhage, bypass patency, and favorable clinical outcomes. Study quality was evaluated with Newcastle-Ottawa, JADAD, and the Oxford Center for Evidence-Based Medicine scales. RESULTS A total of 6709 articles were identified in the initial search. Of these articles, 50 met the inclusion criteria and were included in the systematic review. A notable increase in the proportion of articles published over the past 10 years was observed. There were 6046 total patients with 4447 bypasses performed over the period from 1978 to 2022. The average length of follow-up was 2.75 ± 2.71 years. The average Newcastle-Ottawa was 6.23 out of 9 stars. There was a significant difference in perioperative stroke (odds ratio [OR], 0.65 [0.48-0.87]; P = 0.004), long-term ischemia (OR, 0.32 [0.23-0.44]; P < 0.0001), overall ischemia (OR, 0.36 [0.28-0.44]; P < 0.0001), and favorable outcomes (OR, 3.63 [2.84-4.64]; P < 0.0001) when comparing pre-COSS to post-COSS time frames in favor of post-COSS. CONCLUSIONS Based on a systematic review of 50 articles, the existing literature indicates that long-term stroke rates and favorable outcomes for surgical revascularization for steno-occlusive disease have improved over time and are lower than previously reported. Improved patient selection, perioperative care, and surgical techniques may contribute to improved outcomes.
Collapse
Affiliation(s)
- Vincent N Nguyen
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Mustafa Motiwala
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Kara Parikh
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - L Erin Miller
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Michael Barats
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Christopher M Nickele
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Violiza Inoa
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; University of Tennessee Health Sciences Center Department of Neurology, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Lucas Elijovich
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; University of Tennessee Health Sciences Center Department of Neurology, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Nitin Goyal
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; University of Tennessee Health Sciences Center Department of Neurology, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Daniel A Hoit
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Adam S Arthur
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Jacques J Morcos
- University of Miami Department of Neurosurgery, Miami, Florida, USA
| | - Nickalus R Khan
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA.
| |
Collapse
|
3
|
Chen Y, Chen P, Duan G, Li R, Li Z, Guo G. Extracranial-intracranial bypass surgery for intracranial aneurysm of the anterior cerebral circulation: A systematic review and meta-analysis. Front Neurol 2023; 14:1174088. [PMID: 37064185 PMCID: PMC10102499 DOI: 10.3389/fneur.2023.1174088] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 03/20/2023] [Indexed: 04/03/2023] Open
Abstract
BackgroundThe safety of extracranial–intracranial (EC–IC) bypass in the management of anterior circulation intracranial aneurysms (IAs) remains to be determined. This systematic review aims to summarize the existing evidence and provide guidance for the precise management of IAs.Data sourceWe constructed search strategies and comprehensively searched Pubmed, Medline, Embase, Web of science, and Cochrane library.MethodsThis systematic review was actualized according to the PRISMA statement. We evaluated study quality using the methodological index for non-randomized study (MINORS). Effect sizes were pooled using a random-effects model. Heterogeneity between studies was assessed using the I2 test. Publication bias was assessed using the Egger's test. The registration number for this systematic review is CRD42023396730.ResultThis systematic review included a total of 21 articles, involving 915 patients. Postoperative bypass patency rate was 99% (95% CI 0.98–1.00); short-term follow-up was 98% (95% CI 0.94–1.00); long-term follow-up was 95% (95% CI 0.93–0.97). The long-term follow-up occlusion rate of saphenous vein was higher than that of radial artery (OR 6.10 95% CI 1.04–35.59). Short-term surgery-related mortality was 0.3% (95% CI 0.000–0.012); long-term follow-up was 0.4% (95% CI 0.000–0.013); The proportion of patients with a score of 0–2 on the modified Rankin Scale (mRS) during long-term follow-up was 92% (95% CI 0.86–0.98). The incidence rates of long-term follow-up complications were: ischemic 3% (95% CI 0.01–0.06); hemorrhagic 1% (95% CI 0.00–0.03); neurological deficit 1% (95% CI 0.00–0.03); other 3% (95% CI 0.01–0.06).LimitationMost of the included studies were retrospective studies. Studies reporting preoperative status were not sufficient to demonstrate postoperative improvement. Lack of sufficient subgroup information such as aneurysm rupture status.ConclusionEC–IC therapy for anterior circulation IAs has a high safety profile. Higher level of evidence is still needed to support clinical decision.Systematic review registrationhttps://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42023396730, identifier: CRD42023396730.
Collapse
Affiliation(s)
- Yang Chen
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Pengyu Chen
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Guosheng Duan
- Shanxi Provincial People's Hospital, Shanxi Medical University, Taiyuan, China
| | - Ren Li
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ziao Li
- Department of Neurosurgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Geng Guo
- Department of Emergency, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- *Correspondence: Geng Guo
| |
Collapse
|
4
|
Haynes J, Kronenburg A, Raz E, Rostanski S, Yaghi S, Ishida K, Shapiro M, Nelson PK, Tanweer O, Langer DJ, Riina HA, Eichel R, Nossek E. Superficial Temporal Artery to Middle Cerebral Artery Cranial Bypass for Nonmoyamoya Steno-Occlusive Disease in Patients Who Failed Optimal Medical Treatment: A Case Series. Oper Neurosurg (Hagerstown) 2021; 20:444-455. [PMID: 33475724 DOI: 10.1093/ons/opaa458] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/11/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND In the post-Carotid Occlusion Surgery Study (COSS) era, multiple reviews suggested subset groups of patients as potential candidates for superficial temporal artery to middle cerebral artery (STA-MCA) bypass. Among them are patients with recurrent strokes despite optimal medical therapy. There is a paucity of data on the outcome of bypass in these specific patients. OBJECTIVE To examine the safety and efficacy of direct STA-MCA bypass in patients with nonmoyamoya, symptomatic steno-occlusive disease with impaired distal perfusion, who failed optimal medical management or endovascular treatment. METHODS A retrospective review was performed to identify patients with cerebrovascular steno-occlusive disease who underwent bypass after symptomatic recurrent or rapidly progressive strokes, despite optimal conservative or endovascular treatment. RESULTS A total of 8 patients (mean age 60 ± 6 yr) underwent direct or combined direct/indirect STA-MCA bypass between 2016 and 2019. All anastomoses were patent. One bypass carried slow flow. There were no procedure-related permanent deficits. One patient developed seizures which were controlled by medications. A total of 7 out of 8 patients were stable or improved clinically at last follow-up (mean 27.3 ± 13.8 mo) without recurrent strokes. One patient did not recover from their presenting stroke, experienced severe bilateral strokes 4 mo postoperatively, and subsequently expired. Modified Rankin Scale (mRS) improved in 6 patients (75%), remained stable in 1 patient (12.5%), and deteriorated in 1 (12.5%). Good long-term functional outcome was achieved in 5 patients (63%, mRS ≤ 2). CONCLUSION Patients with symptomatic, hypoperfused steno-occlusive disease who fail optimal medical or endovascular treatment may benefit from cerebral revascularization. Direct or combined STA-MCA bypass was safe and provided favorable outcomes in this small series.
Collapse
Affiliation(s)
- Joseph Haynes
- School of Medicine and Dentistry, University of Rochester, Rochester, New York
| | - Annick Kronenburg
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Eytan Raz
- Department of Radiology, Section of Neurointerventional Radiology, NYU Langone Health, New York, New York
| | - Sara Rostanski
- Department of Neurology, NYU Langone Health, New York, New York
| | - Shadi Yaghi
- Department of Neurology, NYU Langone Health, New York, New York
| | - Koto Ishida
- Department of Neurology, NYU Langone Health, New York, New York
| | - Maksim Shapiro
- Department of Radiology, Section of Neurointerventional Radiology, NYU Langone Health, New York, New York
| | - Peter Kim Nelson
- Department of Radiology, Section of Neurointerventional Radiology, NYU Langone Health, New York, New York
| | - Omar Tanweer
- Department of Neurosurgery, NYU Langone Health, New York, New York
| | - David J Langer
- Department of Neurosurgery, Lenox Hill Hospital, Zucker School of Medicine at Hofstra/Northwell, New York, New York
| | - Howard A Riina
- Department of Neurosurgery, NYU Langone Health, New York, New York
| | - Roni Eichel
- Department of Neurology, Shaare Zedek Medical Center, Affiliated Teaching Hospital of the Hebrew University Medical Faculty, Jerusalem, Israel
| | - Erez Nossek
- Department of Neurosurgery, NYU Langone Health, New York, New York
| |
Collapse
|
5
|
See AP, Charbel FT. Bypass for flow-augmentation in atherosclerotic carotid occlusion: a review of the literature and career experience. J Neurosurg Sci 2021; 65:305-321. [PMID: 33709658 DOI: 10.23736/s0390-5616.21.05094-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Atherosclerosis of the internal carotid artery and intracranial vessels can compromise cerebral hemodynamics and cause stroke. Cerebral bypass has a half-century history in augmenting or replacing blood flow the brain. Several trials have investigated various applications of cerebral bypass in flow augmentation for atherosclerotic disease. This review discusses the clinical science of cerebrovascular atherosclerosis to provide the context in which cerebral bypass is currently applied. This includes prior clinical trials, ongoing clinical trials, and consensus guidelines, and is complemented by studies in the physiologic science of cerebrovascular flow. The scientific background is supplemented by the description of the technical art of bypass surgery based on a three-decade experience. Successful application of cerebral bypass to augment flow in atherosclerotic cerebrovascular disease requires correct diagnosis of compromised hemodynamic reserve refractory to medical optimization and an appropriate matching of bypass flow with cerebral demand.
Collapse
|
6
|
Sayyahmelli S, Ozaydin B, Sahin B, Erginoglu U, Cikla U, Baskaya MK. Surgical Strategies for Cerebral Revascularization in Patients with Limited Bypass Conduit Options and Unexpected Intraoperative Difficulties. World Neurosurg 2020; 141:e959-e970. [PMID: 32585374 DOI: 10.1016/j.wneu.2020.06.095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cerebral bypass procedures are complex and require substantial experience and skills and thorough preoperative planning. Cerebrovascular surgeons face increasingly complex bypass cases because most routine cases are managed by endovascular means, and because increasing numbers of patients have complex medical problems that affect available and suitable bypass conduit options. We report the cases of several patients undergoing cerebral bypass with limited bypass conduit alternatives, in whom there were unexpected intraoperative difficulties requiring complex solutions. METHODS The neurological surgery department database was reviewed to identify patients who had undergone cerebral bypass procedures during a 13-year period in whom there were limited available bypass conduits, and in whom unexpected intraoperative difficulties were encountered during cerebral bypass. RESULTS Patient outcomes and graft patency were evaluated for 13 patients including 6 with ischemia, 3 with giant aneurysms, 2 with mycotic aneurysms, 1 with dissecting aneurysm, and 1 with gunshot-induced pseudoaneurysm. Median duration of follow-up was 43 months. In 12 of 13 patients, bypass graft/grafts were patent on the last computed tomography angiogram. In 1 patient, a prophylactic bypass procedure, the graft was not filling, probably because of lack of demand. Two patients died during follow-up of unrelated causes. CONCLUSIONS Cerebrovascular surgeons should be versatile in dealing with patients with complex bypass. When there are limited available conduit options, we find that collaboration with other surgical specialties (e.g., plastics and vascular) is helpful. In patients in whom extreme intraoperative difficulties are expected, thorough preoperative planning with multiple backup plans should be exercised, as described in this report.
Collapse
Affiliation(s)
- Sima Sayyahmelli
- Department of Neurological Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Burak Ozaydin
- Department of Neurological Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Balkan Sahin
- Department of Neurological Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Ufuk Erginoglu
- Department of Neurological Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Ulas Cikla
- Department of Neurological Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Mustafa K Baskaya
- Department of Neurological Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.
| |
Collapse
|
7
|
Rennert RC, Steinberg JA, Strickland BA, Ravina K, Bakhsheshian J, Fredrickson V, Pannell JS, Khalessi AA, Russin JJ. Extracranial-to-Intracranial Bypass for Refractory Vertebrobasilar Insufficiency. World Neurosurg 2019; 126:552-559. [PMID: 30926554 DOI: 10.1016/j.wneu.2019.03.184] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 11/13/2022]
Abstract
BACKGROUND Vertebrobasilar insufficiency (VBI) is associated with high rates of morbidity and mortality, especially after failure of first-line medical and/or endovascular therapies. Although the optimal therapeutic strategy for refractory VBI remains unclear, surgical bypass represents a potentially life-saving treatment in this patient subset. METHODS A multi-institution retrospective database review was performed to identify patients with symptomatic refractory VBI over a 4-year period (July 2014 to July 2018). Surgical treatments, as well as clinical and neurologic outcomes were recorded. RESULTS Five patients were identified with refractory VBI (average age 55 ± 11.0 years). All 5 patients had clinically significant posterior circulation strokes on presentation. Three patients underwent superficial temporal artery-to-superior cerebellar artery bypass based on significant acute perfusion mismatches or progressive strokes despite maximal medical therapy; 1 surgical patient (33%) experienced punctate perioperative strokes and there were no significant bypass related complications. Functional outcomes in the 3 surgical patients were correlated with preoperative stroke burden. The remaining 2 patients experienced rapid neurologic declines after presentation that precluded bypass, and died shortly thereafter. CONCLUSIONS Refractory VBI has high morbidity, with cerebral bypass representing a safe and potentially efficacious treatment for selected patients. Long-term post-bypass outcomes are dependent on the level of irreversible preoperative neurologic injuries.
Collapse
Affiliation(s)
- Robert C Rennert
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Jeffrey A Steinberg
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Ben A Strickland
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Kristine Ravina
- Neurorestoration Center, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Joshua Bakhsheshian
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Vance Fredrickson
- Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - J Scott Pannell
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Alexander A Khalessi
- Department of Neurological Surgery, University of California San Diego, San Diego, California, USA
| | - Jonathan J Russin
- Neurorestoration Center, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
| |
Collapse
|
8
|
Winkler EA, Raygor K, Caleb Rutledge W, Lu AP, Phelps RRL, Lien BV, Rubio RR, Abla AA. Local in situ fibrinolysis for recanalization of an occluded extracranial-intracranial bypass: Technical note. J Clin Neurosci 2019; 64:287-291. [PMID: 30885594 DOI: 10.1016/j.jocn.2019.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/08/2019] [Indexed: 11/29/2022]
Abstract
Extracranial-intracranial (EC-IC) bypass is a versatile technique to augment or preserve blood flow when treating cerebrovascular pathologies to prevent ischemic complications. Technical success and good patient outcomes rely on the successful establishment and maintenance of a patent bypass graft. Multiple modalities have been developed to confirm intraoperative graft patency. However, techniques and strategies to manage an occluded bypass are sparsely reported. The authors describe a novel technique for the in situ fibrinolysis utilizing recombinant tissue plasminogen activator (r-tPA) to recanalize an occluded EC-IC bypass following thrombus formation. This technique is feasible and effective in restoring long term EC-IC graft patency without requirement of additional vessel harvest or added ischemia time which may be tailored for use with other pharmacologic agents based on the acuity of an in-graft thrombosis.
Collapse
Affiliation(s)
- Ethan A Winkler
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - Kunal Raygor
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - W Caleb Rutledge
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - Alex P Lu
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - Ryan R L Phelps
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - Brian V Lien
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - Roberto Rodriguez Rubio
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA
| | - Adib A Abla
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA, USA.
| |
Collapse
|
9
|
Winkler EA, Yue JK, Deng H, Raygor KP, Phelps RRL, Rutledge C, Lu AY, Rodriguez Rubio R, Burkhardt JK, Abla AA. National trends in cerebral bypass surgery in the United States, 2002–2014. Neurosurg Focus 2019; 46:E4. [DOI: 10.3171/2018.11.focus18530] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/14/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVECerebral bypass procedures are microsurgical techniques to augment or restore cerebral blood flow when treating a number of brain vascular diseases including moyamoya disease, occlusive vascular disease, and cerebral aneurysms. With advances in endovascular therapy and evolving evidence-based guidelines, it has been suggested that cerebral bypass procedures are in a state of decline. Here, the authors characterize the national trends in cerebral bypass surgery in the United States from 2002 to 2014.METHODSUsing the National (Nationwide) Inpatient Sample, the authors extracted for analysis the data on all adult patients who had undergone cerebral bypass as indicated by ICD-9-CM procedure code 34.28. Indications for bypass procedures, patient demographics, healthcare costs, and regional variations are described. Results were stratified by indication for cerebral bypass including moyamoya disease, occlusive vascular disease, and cerebral aneurysms. Predictors of inpatient complications and death were evaluated using multivariable logistic regression analysis.RESULTSFrom 2002 to 2014, there was an increase in the annual number of cerebral bypass surgeries performed in the United States. This increase reflected a growth in the number of cerebral bypass procedures performed for adult moyamoya disease, whereas cases performed for occlusive vascular disease or cerebral aneurysms declined. Inpatient complication rates for cerebral bypass performed for moyamoya disease, vascular occlusive disease, and cerebral aneurysm were 13.2%, 25.1%, and 56.3%, respectively. Rates of iatrogenic stroke ranged from 3.8% to 20.4%, and mortality rates were 0.3%, 1.4%, and 7.8% for moyamoya disease, occlusive vascular disease, and cerebral aneurysms, respectively. Multivariate logistic regression confirmed that cerebral bypass for vascular occlusive disease or cerebral aneurysm is a statistically significant predictor of inpatient complications and death. Mean healthcare costs of cerebral bypass remained unchanged from 2002 to 20014 and varied with treatment indication: moyamoya disease $38,406 ± $483, vascular occlusive disease $46,618 ± $774, and aneurysm $111,753 ± $2381.CONCLUSIONSThe number of cerebral bypass surgeries performed for adult revascularization has increased in the United States from 2002 to 2014. Rising rates of surgical bypass reflect a greater proportion of surgeries performed for moyamoya disease, whereas bypasses performed for vascular occlusive disease and aneurysms are decreasing. Despite evolving indications, cerebral bypass remains an important surgical tool in the modern endovascular era and may be increasing in use. Stagnant complication rates highlight the need for continued interest in advancing available bypass techniques or technologies to improve patient outcomes.
Collapse
Affiliation(s)
- Ethan A. Winkler
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - John K. Yue
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Hansen Deng
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Kunal P. Raygor
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Ryan R. L. Phelps
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Caleb Rutledge
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Alex Y. Lu
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | - Roberto Rodriguez Rubio
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| | | | - Adib A. Abla
- 1Department of Neurological Surgery, University of California, San Francisco, California; and
| |
Collapse
|
10
|
Nossek E, Langer DJ. Internal Maxillary Artery to Middle Cerebral Artery Cranial Bypass: The New “Work Horse” for Cerebral Flow Replacement. World Neurosurg 2018; 115:44-46. [DOI: 10.1016/j.wneu.2018.03.214] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 03/29/2018] [Indexed: 10/17/2022]
|
11
|
Belykh E, George L, Zhao X, Carotenuto A, Moreira LB, Yağmurlu K, Bozkurt B, Byvaltsev VA, Nakaji P, Preul MC. Microvascular anastomosis under 3D exoscope or endoscope magnification: A proof-of-concept study. Surg Neurol Int 2018; 9:115. [PMID: 30105125 PMCID: PMC6070836 DOI: 10.4103/sni.sni_36_18] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/06/2018] [Indexed: 12/03/2022] Open
Abstract
Background: Extracranial–intracranial bypass is a challenging procedure that requires special microsurgical skills and an operative microscope. The exoscope is a tool for neurosurgical visualization that provides view on a heads-up display similar to an endoscope, but positioned external to the operating field, like a microscope. The authors carried out a proof-of-concept study evaluating the feasibility and effectiveness of performing microvascular bypass using various new exoscopic tools. Methods: We evaluated microsurgical procedures using a three-dimensional (3D) endoscope, hands-free robotic automated positioning two-dimensional (2D) exoscope, and an ocular-free 3D exoscope, including surgical gauze knot tying, surgical glove cutting, placental vessel anastomoses, and rat vessel anastomoses. Image quality, effectiveness, and feasibility of each technique were compared among different visualization tools and to a standard operative microscope. Results: 3D endoscopy produced relatively unsatisfactory resolution imaging. It was shown to be sufficient for knot tying and anastomosis of a placental artery, but was not suitable for anastomosis in rats. The 2D exoscope provided higher resolution imaging, but was not adequate for all maneuvers because of lack of depth perception. The 3D exoscope was shown to be functional to complete all maneuvers because of its depth perception and higher resolution. Conclusion: Depth perception and high resolution at highest magnification are required for microvascular bypass procedures. Execution of standard microanastomosis techniques was unsuccessful using 2D imaging modalities because of depth-perception-related constraints. Microvascular anastomosis is feasible under 3D exoscopic visualization; however, at highest magnification, the depth perception is inferior to that provided by a standard operative microscope, which impedes the procedure.
Collapse
Affiliation(s)
- Evgenii Belykh
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA.,Department of Neurosurgery, Irkutsk State Medical University, Irkutsk, Russia
| | - Laeth George
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Xiaochun Zhao
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Alessandro Carotenuto
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Leandro Borba Moreira
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Kaan Yağmurlu
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Baran Bozkurt
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Vadim A Byvaltsev
- Department of Neurosurgery, Irkutsk State Medical University, Irkutsk, Russia
| | - Peter Nakaji
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Mark C Preul
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| |
Collapse
|
12
|
Wang L, Lu S, Qian H, Shi X. Internal Maxillary Artery Bypass with Radial Artery Graft Treatment of Giant Intracranial Aneurysms. World Neurosurg 2017; 105:568-584. [DOI: 10.1016/j.wneu.2017.06.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 11/24/2022]
|