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Xiang Y, Zhang P, Lai Y, Wang D, Liu A. Risk Factors, Antithrombotic Management, and Long-Term Outcomes of Patients Undergoing Endovascular Treatment of Unruptured Intracranial Aneurysms. Thromb Haemost 2024. [PMID: 38889891 DOI: 10.1055/a-2347-4221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
BACKGROUND Patients receiving endovascular treatment for unruptured intracranial aneurysms (UIAs) face varying risks and benefits with antithrombotic management. This study aimed to evaluate the perioperative and long-term effects of antithrombotic strategies, identify the populations that would benefit, and explore the predictive factors affecting the long-term outcomes. METHODS UIA patients undergoing endovascular treatment including stent-assisted coiling or flow diversion between June 2019 and June 2022 were enrolled. We compared perioperative and long-term complications between tirofiban and dual antiplatelet therapy groups. Optimal candidates for each antithrombotic treatment were identified using multivariate logistic regression. Nomograms were developed to determine the significant predictors for thromboembolic complications during follow-up. RESULTS Among 181 propensity-score matched pairs, the tirofiban group showed a trend toward a lower rate of thromboembolic complications than the DAPT group without elevating major bleeding risk in either period. Homocysteine (Hcy) level ≥10 μmol/L was a significant independent factor associated with thromboembolic complication in both periods. Subgroup analysis highlighted that in patients with high Hcy levels, tirofiban and sustained antiplatelet treatment for ≥12 months were protective factors, while a history of stroke was an independent risk factor for thromboembolic events in follow-up. Four variables were selected to construct a prognostic nomogram, history of hypertension, prior stroke, Hcy level, and the duration of antiplatelet therapy. CONCLUSION Perioperative low-dose tirofiban and extended antiplatelet therapy demonstrated a favorable trend in long-term outcomes for UIA patients with preoperative Hcy levels ≥10 μmol/L undergoing endovascular treatment. The prognostic model offers reliable risk prediction and guides antithrombotic strategy decisions.
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Affiliation(s)
- Yanxiao Xiang
- Department of Pharmacy, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Ping Zhang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Yongjie Lai
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmaceutical Sciences, Peking University, Haidian District, Beijing, China
| | - Donghai Wang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Anchang Liu
- Department of Pharmacy, Qilu Hospital of Shandong University, Jinan, Shandong, China
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong, China
- Department of Pharmacy, Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong, China
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2
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Lee JH, Lee J, Park SH, Han SH, Kim JH, Park JW. Comparison between remimazolam and propofol anaesthesia for interventional neuroradiology: a randomised controlled trial. Anaesth Crit Care Pain Med 2024; 43:101337. [PMID: 38061682 DOI: 10.1016/j.accpm.2023.101337] [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: 09/14/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND General anaesthesia can immobile patients during interventional neuroradiology to improve image quality. Remimazolam, an ultrashort-acting benzodiazepine, is advantageous for haemodynamic stability. This study compared remimazolam and propofol anaesthesia during neuroradiology procedures regarding intraoperative hypotensive events and rapid recovery. METHODS This single-masked randomised-controlled study included 76 participants who underwent elective endovascular embolisation in a single centre. Patients were randomised between a continuous remimazolam infusion (n = 38) or a target-controlled propofol infusion group (n = 38). In the remimazolam group, flumazenil (0.2 mg) was administered at the end of the procedure. Phenylephrine was titrated to maintain the mean arterial pressure within ± 20% of the baseline value. The primary outcome was the total phenylephrine dose during the procedure. RESULTS The total phenylephrine dose was 0.0 [0.0-30.0] μg in the remimazolam group and 30.0 [0.0-205.0] μg in the propofol group (p = 0.001). Hypotensive events were observed in 11 (28.9%) patients in the remimazolam group and 23 (60.5%) patients in the propofol group (p = 0.001). Recovery times to spontaneous breathing, eye-opening, extubation, and orientation were shorter in the remimazolam group than in the propofol group (all p < 0.001). CONCLUSIONS Remimazolam anaesthesia showed superior haemodynamic stability compared with propofol anaesthesia during neuroradiology procedures. Systematic use of flumazenil enabled rapid recovery from remimazolam anaesthesia. REGISTRATION University Hospital Medical Information Network Clinical Trials Registry; Registration number: UMIN000047384; URL: https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000054046.
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Affiliation(s)
- Ji Hyeon Lee
- Department of Anaesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jiyoun Lee
- Department of Anaesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Sang Heon Park
- Department of Anaesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Sung-Hee Han
- Department of Anaesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Anaesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul, South Korea
| | - Jin-Hee Kim
- Department of Anaesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Anaesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul, South Korea
| | - Jin-Woo Park
- Department of Anaesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea; Department of Anaesthesiology and Pain Medicine, College of Medicine, Seoul National University, Seoul, South Korea.
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3
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Aires R, Galafassi G, Pinho MCV, de Araújo Paz D, Salati T, Marchi C, de Aguiar PHP. Preoperative scale proposal based on clinical outcome for elderly patients with ruptured intracranial aneurysms undergoing microsurgery. Int J Neurosci 2023; 133:1204-1210. [PMID: 35465825 DOI: 10.1080/00207454.2022.2070488] [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: 02/13/2022] [Accepted: 04/18/2022] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Life expectancy in individuals has increased in recent years. There is no consensus in the literature on the best treatment for a ruptured aneurysm in the elderly (> 60 years), but some places only have microsurgery as a therapeutic strategy. This work aims to develop a prognostic scale for ruptured intracranial aneurysms in the elderly. MATERIAL AND METHODS Two thousand five hundred thirty patients with subarachnoid hemorrhage were retrospectively evaluated in the last ten years, and 550 of them were elderly. We developed a prognostic scale from the analysis of medical records, clinical and tomographic features that had statistical significance. Glasgow Coma Outcome (GOS) was the outcome of interest and p value < 0,05 was considered statistically significant. RESULTS Five hundred fifty patients were evaluated, and the comorbidities that were independent variables for poor prognosis were smoking and arterial hypertension; clinical variables were Hunt-Hess, modified Rankin and Glasgow Coma Scale; tomographic was Fisher scale. Poor outcome was defined as GOS ≤ 3. Poor surgical outcomes were more remarkable in the high-risk factor categories, being 6.41 times higher among individuals who had 3 to 4 risk factors and 8.80 times higher among individuals with 5 to 6 risk factors. CONCLUSION In some vascular neurosurgery services worldwide, microsurgery is the only therapeutic option. This scale aimed at the elderly patient individualizes the treatment and can predict the clinical outcome in ruptured intracranial aneurysms.
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Affiliation(s)
- Rogério Aires
- Institute of Medical Assistance to the State Public Servant, Leforte Liberty Hospital, Santa Paula Hospital, São Paulo, Brazil
| | | | | | | | | | | | - Paulo Henrique Pires de Aguiar
- Institute of Medical Assistance to the State Public Servant, Santa Paula Hospital, ABC Medical School, São Paulo, Brazil
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Noda K, Koga M, Toyoda K. Recognition of Strokes in the ICU: A Narrative Review. J Cardiovasc Dev Dis 2023; 10:jcdd10040182. [PMID: 37103061 PMCID: PMC10145112 DOI: 10.3390/jcdd10040182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 04/28/2023] Open
Abstract
Despite the remarkable progress in acute treatment for stroke, in-hospital stroke is still devastating. The mortality and neurological sequelae are worse in patients with in-hospital stroke than in those with community-onset stroke. The leading cause of this tragic situation is the delay in emergent treatment. To achieve better outcomes, early stroke recognition and immediate treatment are crucial. In general, in-hospital stroke is initially witnessed by non-neurologists, but it is sometimes challenging for non-neurologists to diagnose a patient's state as a stroke and respond quickly. Therefore, understanding the risk and characteristics of in-hospital stroke would be helpful for early recognition. First, we need to know "the epicenter of in-hospital stroke". Critically ill patients and patients who undergo surgery or procedures are admitted to the intensive care unit, and they are potentially at high risk for stroke. Moreover, since they are often sedated and intubated, evaluating their neurological status concisely is difficult. The limited evidence demonstrated that the intensive care unit is the most common place for in-hospital strokes. This paper presents a review of the literature and clarifies the causes and risks of stroke in the intensive care unit.
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Affiliation(s)
- Kotaro Noda
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita 564-8565, Japan
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
| | - Masatoshi Koga
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita 564-8565, Japan
| | - Kazunori Toyoda
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita 564-8565, Japan
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Tong X, Feng X, Peng F, Niu H, Zhang X, Li X, Zhao Y, Liu A, Duan C. Rupture discrimination of multiple small (< 7 mm) intracranial aneurysms based on machine learning-based cluster analysis. BMC Neurol 2023; 23:45. [PMID: 36709247 PMCID: PMC9883873 DOI: 10.1186/s12883-023-03088-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 01/25/2023] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Small multiple intracranial aneurysms (SMIAs) are known to be more prone to rupture than are single aneurysms. However, specific recommendations for patients with small MIAs are not included in the guidelines of the American Heart Association and American Stroke Association. In this study, we aimed to evaluate the feasibility of machine learning-based cluster analysis for discriminating the risk of rupture of SMIAs. METHODS This multi-institutional cross-sectional study included 1,427 SMIAs from 660 patients. Hierarchical cluster analysis guided patient classification based on patient-level characteristics. Based on the clusters and morphological features, machine learning models were constructed and compared to screen the optimal model for discriminating aneurysm rupture. RESULTS Three clusters with markedly different features were identified. Cluster 1 (n = 45) had the highest risk of subarachnoid hemorrhage (SAH) (75.6%) and was characterized by a higher prevalence of familiar IAs. Cluster 2 (n = 110) had a moderate risk of SAH (38.2%) and was characterized by the highest rate of SAH history and highest number of vascular risk factors. Cluster 3 (n = 505) had a relatively mild risk of SAH (17.6%) and was characterized by a lower prevalence of SAH history and lower number of vascular risk factors. Lasso regression analysis showed that compared with cluster 3, clusters 1 (odds ratio [OR], 7.391; 95% confidence interval [CI], 4.074-13.150) and 2 (OR, 3.014; 95% CI, 1.827-4.970) were at a higher risk of aneurysm rupture. In terms of performance, the area under the curve of the model was 0.828 (95% CI, 0.770-0.833). CONCLUSIONS An unsupervised machine learning-based algorithm successfully identified three distinct clusters with different SAH risk in patients with SMIAs. Based on the morphological factors and identified clusters, our proposed model has good discrimination ability for SMIA ruptures.
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Affiliation(s)
- Xin Tong
- grid.411617.40000 0004 0642 1244Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, 119 Fanyang Road, Beijing, 100070 China
| | - Xin Feng
- grid.417404.20000 0004 1771 3058National Key Clinical Specialty, Department of Neurosurgery, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, Neurosurgery Institute, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Fei Peng
- grid.411617.40000 0004 0642 1244Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, 119 Fanyang Road, Beijing, 100070 China
| | - Hao Niu
- grid.411617.40000 0004 0642 1244Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, 119 Fanyang Road, Beijing, 100070 China
| | - Xin Zhang
- grid.417404.20000 0004 1771 3058National Key Clinical Specialty, Department of Neurosurgery, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, Neurosurgery Institute, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xifeng Li
- grid.417404.20000 0004 1771 3058National Key Clinical Specialty, Department of Neurosurgery, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, Neurosurgery Institute, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yuanli Zhao
- grid.449412.eDepartment of Neurosurgery, Peking University International Hospital, Beijing, China
| | - Aihua Liu
- grid.411617.40000 0004 0642 1244Department of Neurosurgery, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, China National Clinical Research Center for Neurological Diseases, 119 Fanyang Road, Beijing, 100070 China
| | - Chuanzhi Duan
- grid.417404.20000 0004 1771 3058National Key Clinical Specialty, Department of Neurosurgery, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory On Brain Function Repair and Regeneration, Neurosurgery Institute, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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6
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Algra AM, Greving JP, de Winkel J, Kurtelius A, Laban K, Verbaan D, van den Berg R, Vandertop W, Lindgren A, Krings T, Woo PYM, Wong GKC, Roozenbeek B, van Es ACGM, Dammers R, Etminan N, Boogaarts H, van Doormaal T, van der Zwan A, van der Schaaf IC, Rinkel GJE, Vergouwen MDI. Development of the SAFETEA Scores for Predicting Risks of Complications of Preventive Endovascular or Microneurosurgical Intracranial Aneurysm Occlusion. Neurology 2022; 99:e1725-e1737. [PMID: 36240099 DOI: 10.1212/wnl.0000000000200978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 06/01/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Preventive unruptured intracranial aneurysm (UIA) occlusion can reduce the risk of subarachnoid hemorrhage, but both endovascular and microneurosurgical treatment carry a risk of serious complications. To improve individualized management decisions, we developed risk scores for complications of endovascular and microneurosurgical treatment based on easily retrievable patient, aneurysm, and treatment characteristics. METHODS For this multicenter cohort study, we combined individual patient data from patients with UIA aged 18 years or older undergoing preventive endovascular treatment (standard, balloon-assisted or stent-assisted coiling, Woven EndoBridge-device, or flow-diverting stent) or microneurosurgical clipping at one of the 10 participating centers from 3 continents between 2000 and 2018. The primary outcome was death from any cause or clinical deterioration from neurologic complications ≤30 days. We selected predictors based on previous knowledge about relevant risk factors and predictor performance and studied the association between predictors and complications with logistic regression. We assessed model performance with calibration plots and concordance (c) statistics. RESULTS Of the 1,282 included patients, 94 (7.3%) had neurologic symptoms that resolved <30 days, 140 (10.9%) had persisting neurologic symptoms, and 6 died (0.5%). At 30 days, 52 patients (4.1%) were dead or dependent. Predictors of procedural complications were size of aneurysm, aneurysm location, familial subarachnoid hemorrhage, earlier atherosclerotic disease, treatment volume, endovascular modality (for endovascular treatment) or extra aneurysm configuration factors (for microneurosurgical treatment, branching artery from aneurysm neck or unfavorable dome-to-neck ratio), and age (acronym: SAFETEA). For endovascular treatment (n = 752), the c-statistic was 0.72 (95% CI 0.67-0.77) and the absolute complication risk ranged from 3.2% (95% CI 1.6%-14.9%; ≤1 point) to 33.1% (95% CI 25.4%-41.5%; ≥6 points). For microneurosurgical treatment (n = 530), the c-statistic was 0.72 (95% CI 0.67-0.77) and the complication risk ranged from 4.9% (95% CI 1.5%-14.9%; ≤1 point) to 49.9% (95% CI 39.4%-60.6%; ≥6 points). DISCUSSION The SAFETEA risk scores for endovascular and microneurosurgical treatment are based on 7 easily retrievable risk factors to predict the absolute risk of procedural complications in patients with UIAs. The scores need external validation before the predicted risks can be properly used to support decision-making in clinical practice. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that SAFETEA scores predict the risk of procedural complications after endovascular and microneurosurgical treatment of unruptured intracranial aneurysms.
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Affiliation(s)
- Annemijn M Algra
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands.
| | - Jacoba P Greving
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Jordi de Winkel
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Arttu Kurtelius
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Kamil Laban
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Dagmar Verbaan
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - René van den Berg
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - William Vandertop
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Antti Lindgren
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Timo Krings
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Peter Y M Woo
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - George K C Wong
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Bob Roozenbeek
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Adriaan C G M van Es
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ruben Dammers
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Nima Etminan
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Hieronymus Boogaarts
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Tristan van Doormaal
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Albert van der Zwan
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Irene C van der Schaaf
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Gabriël J E Rinkel
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Mervyn D I Vergouwen
- From the Departments of Neurology and Neurosurgery (A.M.A., K.L., T.v.D., A.v.d.Z., G.J.E.R., M.D.I.V.) and Radiology (I.C.v.d.S.), UMC Utrecht Brain Center, and Julius Center for Health Sciences and Primary Care (J.P.G.), University Medical Center Utrecht, Utrecht University; Departments of Neurology (J.d.W., B.R.), Radiology and Nuclear Medicine (A.C.G.M.v.E.), and Neurosurgery (R.D.), Erasmus Medical Center, Erasmus MC Stroke Center, Rotterdam, the Netherlands; Departments of Neurosurgery (A.K., A.L.) and Clinical Radiology (A.L.), Kuopio University Hospital, Finland; Departments of Neurosurgery (D.V., W.V.) and Radiology and Nuclear Medicine (R.v.d.B.), Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, the Netherlands; Division of Neuroradiology (T.K.), Department of Medical Imaging and Division of Neurosurgery, Department of Surgery, Toronto Western Hospital, University Health Network, Ontario, Canada; Department of Neurosurgery (P.Y.M.W.), Kwong Wah Hospital, Hong Kong, China; Division of Neurosurgery (G.K.C.W.), Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, China; Department of Neurosurgery (N.E.), University Hospital Mannheim, Medical Faculty Mannheim, University of Heidelberg, Germany; and Department of Neurosurgery (H.B.), Radboud University Medical Center, Nijmegen, the Netherlands
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Tian Z, Li W, Feng X, Sun K, Duan C. Prediction and analysis of periprocedural complications associated with endovascular treatment for unruptured intracranial aneurysms using machine learning. Front Neurol 2022; 13:1027557. [PMID: 36313499 PMCID: PMC9596813 DOI: 10.3389/fneur.2022.1027557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 09/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background The management of unruptured intracranial aneurysm (UIA) remains controversial. Recently, machine learning has been widely applied in the field of medicine. This study developed predictive models using machine learning to investigate periprocedural complications associated with endovascular procedures for UIA. Methods We enrolled patients with solitary UIA who underwent endovascular procedures. Periprocedural complications were defined as neurological adverse events resulting from endovascular procedures. We incorporated three machine learning algorithms into our prediction models: artificial neural networks (ANN), random forest (RF), and logistic regression (LR). The Shapley Additive Explanations (SHAP) approach and feature importance analysis were used to identify and prioritize significant features associated with periprocedural complications. Results In total, 443 patients were included. Forty-eight (10.83%) procedure-related complications occurred. In the testing set, the ANN model produced the largest value (0.761) for area under the curve (AUC). The RF model also achieved an acceptable AUC value of 0.735, while the AUC value of the LR model was 0.668. SHAP and feature importance analysis identified distal aneurysm, aneurysm size and treatment modality as most significant features for the prediction of periprocedural complications following endovascular treatment for UIA. Conclusion Periprocedural complications after endovascular treatment for UIA are not negligible. Prediction of periprocedural complications via machine learning is feasible and effective. Machine learning can serve as a promising tool in the decision-making process for UIA treatment.
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Affiliation(s)
- Zhongbin Tian
- National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Neurosurgery Institute, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Wenqiang Li
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xin Feng
- National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Neurosurgery Institute, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Kaijian Sun
- National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Neurosurgery Institute, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Chuanzhi Duan
- National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Neurosurgery Institute, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Chen M, Geng C, Wang D, Zhou Z, Di R, Li F, Piao S, Zhang J, Li Y, Dai Y. A coarse-to-fine cascade deep learning neural network for segmenting cerebral aneurysms in time-of-flight magnetic resonance angiography. Biomed Eng Online 2022; 21:71. [PMID: 36163014 PMCID: PMC9513890 DOI: 10.1186/s12938-022-01041-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 09/16/2022] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Accurate segmentation of unruptured cerebral aneurysms (UCAs) is essential to treatment planning and rupture risk assessment. Currently, three-dimensional time-of-flight magnetic resonance angiography (3D TOF-MRA) has been the most commonly used method for screening aneurysms due to its noninvasiveness. The methods based on deep learning technologies can assist radiologists in achieving accurate and reliable analysis of the size and shape of aneurysms, which may be helpful in rupture risk prediction models. However, the existing methods did not accomplish accurate segmentation of cerebral aneurysms in 3D TOF-MRA. METHODS This paper proposed a CCDU-Net for segmenting UCAs of 3D TOF-MRA images. The CCDU-Net was a cascade of a convolutional neural network for coarse segmentation and the proposed DU-Net for fine segmentation. Especially, the dual-channel inputs of DU-Net were composed of the vessel image and its contour image which can augment the vascular morphological information. Furthermore, a newly designed weighted loss function was used in the training process of DU-Net to promote the segmentation performance. RESULTS A total of 270 patients with UCAs were enrolled in this study. The images were divided into the training (N = 174), validation (N = 43), and testing (N = 53) cohorts. The CCDU-Net achieved a dice similarity coefficient (DSC) of 0.616 ± 0.167, Hausdorff distance (HD) of 5.686 ± 7.020 mm, and volumetric similarity (VS) of 0.752 ± 0.226 in the testing cohort. Compared with the existing best method, the DSC and VS increased by 18% and 5%, respectively, while the HD decreased by one-tenth. CONCLUSIONS We proposed a CCDU-Net for segmenting UCAs in 3D TOF-MRA, and the obtained results show that the proposed method outperformed other existing methods.
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Affiliation(s)
- Meng Chen
- Xuzhou Medical University, 209 Tongshan Road, Xuzhou, 221000, China
| | - Chen Geng
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, 88 Keling Road, Suzhou, 215163, China
| | - Dongdong Wang
- Department of Radiology, Huashan Hospital, Fudan University, 12 Wulumuqi Middle Road, Shanghai, 200000, China
| | - Zhiyong Zhou
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, 88 Keling Road, Suzhou, 215163, China.,Jinan Guoke Medical Engineering Technology Development Co., Ltd, Jinan, 250000, China
| | - Ruoyu Di
- Department of Radiology, Huashan Hospital, Fudan University, 12 Wulumuqi Middle Road, Shanghai, 200000, China
| | - Fengmei Li
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, 88 Keling Road, Suzhou, 215163, China
| | - Sirong Piao
- Department of Radiology, Huashan Hospital, Fudan University, 12 Wulumuqi Middle Road, Shanghai, 200000, China
| | - Jiajun Zhang
- Suzhou University of Science and Technology, 99 Xuefu Road, Suzhou, 215009, China
| | - Yuxin Li
- Department of Radiology, Huashan Hospital, Fudan University, 12 Wulumuqi Middle Road, Shanghai, 200000, China.
| | - Yakang Dai
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, 88 Keling Road, Suzhou, 215163, China.
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Feghali J, Gami A, Rapaport S, Patel J, Khalafallah AM, Huq S, Mukherjee D, Tamargo RJ, Huang J. Adapting the 5-factor modified frailty index for prediction of postprocedural outcome in patients with unruptured aneurysms. J Neurosurg 2021; 136:456-463. [PMID: 34388727 DOI: 10.3171/2021.2.jns204420] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 02/01/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The 5-factor modified frailty index (mFI-5) is a practical tool that can be used to estimate frailty by measuring five accessible factors: functional status, history of diabetes, chronic obstructive pulmonary disease, congestive heart failure, and hypertension. The authors aimed to validate the utility of mFI-5 for predicting endovascular and microsurgical treatment outcomes in patients with unruptured aneurysms. METHODS A prospectively maintained database of consecutive patients with unruptured aneurysm who were treated with clip placement or endovascular therapy was used. Because patient age is an important predictor of treatment outcomes in patients with unruptured aneurysm, mFI-5 was supplemented with age to create the age-supplemented mFI-5 (AmFI-5). Associations of scores on these indices with major complications (symptomatic ischemic or hemorrhagic stroke, pulmonary embolism, pneumonia, or surgical site infection requiring reoperation) were evaluated. Validation was carried out with the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database (2006-2017). RESULTS The institutional database included 275 patients (88 underwent clip placement, and 187 underwent endovascular treatment). Multivariable analysis of the surgical cohort showed that major complication was significantly associated with mFI-5 (OR 2.0, p = 0.046) and AmFI-5 (OR 1.9, p = 0.028) scores. Significant predictive accuracy for major complications was provided by mFI-5 (c-statistic = 0.709, p = 0.011) and AmFI-5 (c-statistic = 0.720, p = 0.008). The American Society of Anesthesiologists Physical Status Classification System (ASA) provided poor discrimination (area under the curve = 0.541, p = 0.618) that was significantly less than that of mFI-5 (p = 0.023) and AmFI-5 (p = 0.014). Optimal relative fit was achieved with AmFI-5, which had the lowest Akaike information criterion value. Similar results were obtained after equivalent analysis of the endovascular cohort, with additional significant associations between index scores and length of stay (β = 0.6 and p = 0.009 for mFI-5; β = 0.5 and p = 0.003 for AmFI-5). In 1047 patients who underwent clip placement and were included in the NSQIP database, mFI-5 (p = 0.001) and AmFI-5 (p < 0.001) scores were significantly associated with severe postoperative adverse events and provided greater discrimination (c-statistic = 0.600 and p < 0.001 for mFI-5; c-statistic = 0.610 and p < 0.001 for AmFI-5) than ASA score (c-statistic = 0.580 and p = 0.003). CONCLUSIONS mFI-5 and AmFI-5 represent potential predictors of procedure-related complications in unruptured aneurysm patients. After further validation, integration of these tools into clinical workflows may optimize patients for intervention.
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Rutledge C, Raper DMS, Jonzzon S, Raygor KP, Pereira MP, Winkler EA, Zhang L, Lawton MT, Abla AA. Sensitivity of the Unruptured Intracranial Aneurysm Treatment Score (UIATS) in the Elderly: Retrospective Analysis of Ruptured Aneurysms. World Neurosurg 2021; 152:e673-e677. [PMID: 34129975 DOI: 10.1016/j.wneu.2021.06.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/06/2021] [Accepted: 06/07/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND/PURPOSE The prevalence of intracranial aneurysms, as well as the incidence of subarachnoid hemorrhage (SAH), increase with age, and the elderly have poor outcomes after SAH. Age is a key factor in the unruptured intracranial aneurysm treatment score (UIATS),but the sensitivity of the UIATS model in detecting risk of SAH among the elderly is unknown. METHODS We retrospectively analyzed 153 consecutive cases of ruptured aneurysms between 2012 and 2018. We used Fisher's exact test, analysis of variance, and multivariate logistic regression to compare outcomes between those >65 years of age and those younger. We then applied the UIATS model and evaluated the sensitivity of the model as a predictor of SAH in the elderly compared with younger patients. RESULTS Elderly patients made up 32% (n = 49 of 153) of our cohort. They had significantly higher in-hospital mortality (19 of 49, 39%) than younger patients (14 of 104, 13%) (P < 0.01). In a multivariate logistic regression, controlling for Hunt-Hess grade and comorbidities, age >65 years remained a significant predictor of unfavorable outcome at discharge (P = 0.03). The UIATS model had low sensitivity in the elderly compared with younger patients: 63% (59 of 136) of younger patients would have been recommended aneurysm repair had their aneurysm been detected unruptured, compared with only 12% (5 of 42) of elderly patients >65 years (P < 0.01). CONCLUSIONS Elderly patients >65 years in age have far worse outcomes after SAH. The sensitivity of the UIATS model for detecting those at risk of SAH was significantly lower in elderly patients. The UIATS model may lead to undertreatment of elderly patients at risk of SAH.
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Affiliation(s)
- Caleb Rutledge
- Department of Neurological Surgery, University of California, San Francisco, California, USA; Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Daniel M S Raper
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - Soren Jonzzon
- School of Medicine, University of California, San Francisco, California, USA
| | - Kunal P Raygor
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | | | - Ethan A Winkler
- Department of Neurological Surgery, University of California, San Francisco, California, USA
| | - Li Zhang
- Department of Epidemiology and Biostatistics, University of California, San Francisco, California, USA
| | - Michael T Lawton
- Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Adib A Abla
- Department of Neurological Surgery, University of California, San Francisco, California, USA.
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11
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Comparing methods of detecting and segmenting unruptured intracranial aneurysms on TOF-MRAS: The ADAM challenge. Neuroimage 2021; 238:118216. [PMID: 34052465 DOI: 10.1016/j.neuroimage.2021.118216] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/11/2021] [Accepted: 05/26/2021] [Indexed: 11/24/2022] Open
Abstract
Accurate detection and quantification of unruptured intracranial aneurysms (UIAs) is important for rupture risk assessment and to allow an informed treatment decision to be made. Currently, 2D manual measures used to assess UIAs on Time-of-Flight magnetic resonance angiographies (TOF-MRAs) lack 3D information and there is substantial inter-observer variability for both aneurysm detection and assessment of aneurysm size and growth. 3D measures could be helpful to improve aneurysm detection and quantification but are time-consuming and would therefore benefit from a reliable automatic UIA detection and segmentation method. The Aneurysm Detection and segMentation (ADAM) challenge was organised in which methods for automatic UIA detection and segmentation were developed and submitted to be evaluated on a diverse clinical TOF-MRA dataset. A training set (113 cases with a total of 129 UIAs) was released, each case including a TOF-MRA, a structural MR image (T1, T2 or FLAIR), annotation of any present UIA(s) and the centre voxel of the UIA(s). A test set of 141 cases (with 153 UIAs) was used for evaluation. Two tasks were proposed: (1) detection and (2) segmentation of UIAs on TOF-MRAs. Teams developed and submitted containerised methods to be evaluated on the test set. Task 1 was evaluated using metrics of sensitivity and false positive count. Task 2 was evaluated using dice similarity coefficient, modified hausdorff distance (95th percentile) and volumetric similarity. For each task, a ranking was made based on the average of the metrics. In total, eleven teams participated in task 1 and nine of those teams participated in task 2. Task 1 was won by a method specifically designed for the detection task (i.e. not participating in task 2). Based on segmentation metrics, the top two methods for task 2 performed statistically significantly better than all other methods. The detection performance of the top-ranking methods was comparable to visual inspection for larger aneurysms. Segmentation performance of the top ranking method, after selection of true UIAs, was similar to interobserver performance. The ADAM challenge remains open for future submissions and improved submissions, with a live leaderboard to provide benchmarking for method developments at https://adam.isi.uu.nl/.
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Kim BG, Jeon YT, Han J, Bae YK, Lee SU, Ryu JH, Koo CH. The Neuroprotective Effect of Thiopental on the Postoperative Neurological Complications in Patients Undergoing Surgical Clipping of Unruptured Intracranial Aneurysm: A Retrospective Analysis. J Clin Med 2021; 10:jcm10061197. [PMID: 33809302 PMCID: PMC7999640 DOI: 10.3390/jcm10061197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/04/2021] [Accepted: 03/11/2021] [Indexed: 11/16/2022] Open
Abstract
Although thiopental improved neurological outcomes in several animal studies, there are still insufficient clinical data examining the efficacy of thiopental for patients undergoing surgical clipping of unruptured intracranial aneurysm (UIA). This study validated the effect of thiopental and investigated risk factors associated with postoperative neurological complications in patients undergoing surgical clipping of UIA. In total, 491 patients who underwent aneurysm clipping were included in this retrospective cohort study. Data regarding demographics, aneurysm characteristics, and use of thiopental were collected from electronic medical records. Propensity score matching and logistic regression analysis were used. After propensity score matching, the thiopental group showed a lower incidence of the postoperative neurological complications than non-thiopental group (5.5% vs. 17.1%, p = 0.001). In multivariate analysis, thiopental reduced the risk of postoperative neurological complications (odds ratio (OR) 0.26, 95% confidence interval (CI) 0.13 to 0.51, p < 0.001) while aneurysm size ≥ 10 mm (OR 4.48, 95% CI 1.69 to 11.87, p = 0.003), and hyperlipidemia (OR 2.24, 95% CI 1.16 to 4.32, p = 0.02) increased the risk of postoperative neurological complications. This study showed that thiopental was associated with the lower risk of neurological complications after clipping of UIA.
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Affiliation(s)
- Byung-Gun Kim
- Department of Anesthesiology and Pain Medicine, Inha University School of Medicine, Inha University Hospital, Incheon 22332, Korea;
| | - Young-Tae Jeon
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul 03080, Korea; (Y.-T.J.); (J.-H.R.)
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (J.H.); (Y.K.B.)
| | - Jiwon Han
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (J.H.); (Y.K.B.)
| | - Yu Kyung Bae
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (J.H.); (Y.K.B.)
| | - Si Un Lee
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam 13620, Korea;
| | - Jung-Hee Ryu
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul 03080, Korea; (Y.-T.J.); (J.-H.R.)
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (J.H.); (Y.K.B.)
| | - Chang-Hoon Koo
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Korea; (J.H.); (Y.K.B.)
- Correspondence: ; Tel.: +82-31-787-7497; Fax: +82-31-787-4063
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13
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Staartjes VE, Sebök M, Blum PG, Serra C, Germans MR, Krayenbühl N, Regli L, Esposito G. Development of machine learning-based preoperative predictive analytics for unruptured intracranial aneurysm surgery: a pilot study. Acta Neurochir (Wien) 2020; 162:2759-2765. [PMID: 32358656 DOI: 10.1007/s00701-020-04355-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/14/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND The decision to treat unruptured intracranial aneurysms (UIAs) or not is complex and requires balancing of risk factors and scores. Machine learning (ML) algorithms have previously been effective at generating highly accurate and comprehensive individualized preoperative predictive analytics in transsphenoidal pituitary and open tumor surgery. In this pilot study, we evaluate whether ML-based prediction of clinical endpoints is feasible for microsurgical management of UIAs. METHODS Based on data from a prospective registry, we developed and internally validated ML models to predict neurological outcome at discharge, as well as presence of new neurological deficits and any complication at discharge. Favorable neurological outcome was defined as modified Rankin scale (mRS) 0 to 2. According to the Clavien-Dindo grading (CDG), every adverse event during the post-operative course (surgery and not surgery related) is recorded as a complication. Input variables included age; gender; aneurysm complexity, diameter, location, number, and prior treatment; prior subarachnoid hemorrhage (SAH); presence of anticoagulation, antiplatelet therapy, and hypertension; microsurgical technique and approach; and various unruptured aneurysm scoring systems (PHASES, ELAPSS, UIATS). RESULTS We included 156 patients (26.3% male; mean [SD] age, 51.7 [11.0] years) with UIAs: 37 (24%) of them were treated for multiple aneurysm and 39 (25%) were treated for a complex aneurysm. Poor neurological outcome (mRS ≥ 3) was seen in 12 patients (7.7%) at discharge. New neurological deficits were seen in 10 (6.4%), and any kind of complication occurred in 20 (12.8%) patients. In the internal validation cohort, area under the curve (AUC) and accuracy values of 0.63-0.77 and 0.78-0.91 were observed, respectively. CONCLUSIONS Application of ML enables prediction of early clinical endpoints after microsurgery for UIAs. Our pilot study lays the groundwork for development of an externally validated multicenter clinical prediction model.
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Affiliation(s)
- Victor E Staartjes
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
- Amsterdam UMC, Neurosurgery, Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Martina Sebök
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
| | - Patricia G Blum
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
| | - Carlo Serra
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
| | - Menno R Germans
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
| | - Niklaus Krayenbühl
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
| | - Luca Regli
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
| | - Giuseppe Esposito
- Machine Intelligence in Clinical Neuroscience (MICN) Laboratory, Department of Neurosurgery, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland.
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14
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Patel PD, Chotai S, Liles C, Chen H, Shannon CN, Froehler MT, Fusco MR, Chitale RV. Impact of Neurovascular Comorbidities and Complications on Outcomes After Procedural Management of Intracranial Aneurysm: Part 1, Unruptured Intracranial Aneurysm. World Neurosurg 2020; 146:e233-e269. [PMID: 33122142 DOI: 10.1016/j.wneu.2020.10.092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 12/01/2022]
Abstract
OBJECTIVE This study investigates the relationship between neurovascular comorbidities and in-hospital complications in determining functional outcome, mortality, length of stay (LOS), and cost of stay. METHODS Patients were identified from the 2012-2015 National Inpatient Sample (NIS) using International Classification of Diseases, Ninth Revision codes for unruptured intracranial aneurysm (UIA) treatment in patients without subarachnoid hemorrhage. In-hospital complications were divided into medical complications, surgical complications, and seizures. Primary outcomes were functional outcome measured by modified Rankin Scale (mRS)-equivalent measure, in-hospital mortality, LOS, and cost. Multivariable logistic regression models were built for mRS-equivalent and in-hospital mortality. Multivariable linear regression models in log scale were built for LOS and cost. RESULTS A total of 7398 procedurally managed patients with UIA were included (median age, 58 years; 75% female; 66% white; 43% private insurance). Higher Neurovascular Comorbidities Index (NCI) was associated with seizure (odds ratio [OR], 1.11 if NCI = 1; OR, 2.49 if NCI = 7; P < 0.001), medical complication (OR, 1.21, NCI = 1; OR, 3.46, NCI = 7; P < 0.001), and surgical complication (OR, 1.25, NCI = 1; OR, 3.47, NCI = 7; P < 0.001). NCI remained significantly predictive of poor mRS-equivalent outcome (OR, 1.20, NCI = 1; OR, 5.79, NCI = 7; P < 0.001), in-hospital mortality (OR, 1.98, NCI = 1; OR, 10.9, NCI = 7; P < 0.001), LOS (coefficient dependent on multiple variables, P < 0.001), and cost (coefficient dependent on multiple variables, P < 0.001) after adjustment. CONCLUSIONS Neurovascular comorbidities are the primary driver of poor mRS-equivalent outcome, in-hospital mortality, higher LOS, and higher cost after procedural treatment of UIA. The conditional event of complication influences patients with fewer comorbidities more so than those with no comorbidities or high comorbidities. It is imperative to precisely account for these factors to optimize targeted resource allocation and increase the value of care for patients with UIA.
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Affiliation(s)
- Pious D Patel
- Vanderbilt University School of Medicine, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA.
| | - Silky Chotai
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Campbell Liles
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Heidi Chen
- Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Chevis N Shannon
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Michael T Froehler
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Matthew R Fusco
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Rohan V Chitale
- Department of Neurosurgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Surgical Outcomes Center for Kids, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
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15
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Chen W, You C. Letter to the Editor Regarding "Treatment Risk for Elderly Patients with Unruptured Cerebral Aneurysm from a Nationwide Database in Japan". World Neurosurg 2020; 135:403. [PMID: 32143259 DOI: 10.1016/j.wneu.2019.11.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 11/23/2019] [Indexed: 02/08/2023]
Affiliation(s)
- Wei Chen
- Department of Neurosurgery, West China Hospital of Sichuan University, Chengdu, Sichuan Province, People's Republic of China
| | - Chao You
- Department of Neurosurgery, West China Hospital of Sichuan University, Chengdu, Sichuan Province, People's Republic of China.
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16
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Satow T, Ikeda G, Takahashi JC, Iihara K, Sakai N. Coil Embolization for Unruptured Intracranial Aneurysms at the Dawn of Stent Era: Results of the Japanese Registry of Neuroendovascular Therapy (JR-NET) 3. Neurol Med Chir (Tokyo) 2020; 60:55-65. [PMID: 31956171 PMCID: PMC7040433 DOI: 10.2176/nmc.st.2019-0210] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Endosaccular coiling is recognized as a feasible method for treating unruptured intracranial aneurysms (UIAs). We retrospectively reviewed cases of UIAs treated by coiling in the Japanese Registry of Neuroendovascular Therapy (JR-NET) 3, a nationwide survey of NET between 2010 and 2014, the beginning period of intracranial stents in Japan. Data were extracted for 6844 UIAs (6619 procedures) from 40,169 registered records of all NETs in the JR-NET 3 databases. The features of the aneurysms and procedures, immediate radiographic findings, procedure-related complications, and clinical outcomes at 30 days after the procedures were assessed. Of 6844 UIAs, 81.8% were located in the anterior circulation. The mean patient age was 61.3 years (72.4% females). Compared with the preceding JR-NET 1 and 2, there were significant increases (P <0.05) in the rates of the following in JR-NET 3: wide-necked and small UIAs measuring <10 mm (from 56.4% to 58.8%), adjunctive techniques (54.8% to 71.8%), and stent usage (1.1% to 22.1%). Both pre- (85.6% to 96.7%) and post-procedural (84.0% to 94.6%) antiplatelet therapy were more frequently administered in JR-NET 3. Although procedure-related complication rates did not differ between the two groups, ischemic complication rates increased from 4.6% to 5.9%, leading to an increase in the 30-day morbidity (modified Rankin Scale >2) from 2.1% to 2.8%. In conclusion, introduction of neck-bridge stent was associated with an increase in cases of wide-necked aneurysms. However, the ischemic complication rate increased despite the greater use of periprocedural antiplatelet therapy.
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Affiliation(s)
- Tetsu Satow
- Department of Neurosurgery, National Cerebral and Cardiovascular Center
| | - Go Ikeda
- Department of Neurosurgery, National Cerebral and Cardiovascular Center
| | - Jun C Takahashi
- Department of Neurosurgery, National Cerebral and Cardiovascular Center
| | - Koji Iihara
- Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University
| | - Nobuyuki Sakai
- Department of Neurosurgery, Kobe City Medical Center General Hospital
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17
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Peng F, Feng X, Tong X, Zhang B, Wang L, Guo E, Qi P, Lu J, Wu Z, Wang D, Liu A. Endovascular Treatment of Small Ruptured Intracranial Aneurysms (<5 mm) : Long-term Clinical and Angiographic Outcomes and Related Predictors. Clin Neuroradiol 2019; 30:817-826. [PMID: 31696281 PMCID: PMC7728636 DOI: 10.1007/s00062-019-00835-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 08/23/2019] [Indexed: 11/28/2022]
Abstract
Purpose To investigate the long-term clinical and angiographic outcomes and their related predictors in endovascular treatment (EVT) of small (<5 mm) ruptured intracranial aneurysms (SRA). Methods The study retrospectively reviewed patients with SRAs who underwent EVT between September 2011 and December 2016 in two Chinese stroke centers. Medical charts and telephone call follow-up were used to identify the overall unfavorable clinical outcomes (OUCO, modified Rankin score ≤2) and any recanalization or retreatment. The independent predictors of OUCO and recanalization were studied using univariate and multivariate analyses. Multivariate Cox proportional hazards models were used to identify the predictors of retreatment. Results In this study 272 SRAs were included with a median follow-up period of 5.0 years (interquartile range 3.5–6.5 years) and 231 patients with over 1171 aneurysm-years were contacted. Among these, OUCO, recanalization, and retreatment occurred in 20 (7.4%), 24 (12.8%), and 11 (7.1%) patients, respectively. Aneurysms accompanied by parent vessel stenosis (AAPVS), high Hunt-Hess grade, high Fisher grade, and intraoperative thrombogenesis in the parent artery (ITPA) were the independent predictors of OUCO. A wide neck was found to be a predictor of recanalization. The 11 retreatments included 1 case of surgical clipping, 6 cases of coiling, and 4 cases of stent-assisted coiling. A wide neck and AAPVS were the related predictors. Conclusion The present study demonstrated relatively favorable clinical and angiographic outcomes in EVT of SRAs in long-term follow-up of up to 5 years. THE AAPVS, as a morphological indicator of the parent artery for both OUCO and retreatment, needs further validation.
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Affiliation(s)
- Fei Peng
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China.,China National Clinical Research Center for Neurological Diseases, No. 119, South 4th Ring West Road, Fengtai District, 100070, Beijing, China
| | - Xin Feng
- Department of Neurosurgery, Beijing Hospital, National Center of Gerontology, No. 1 DaHua Road, Dong Dan, 100730, Beijing, China.,Graduate School of Peking Union Medical College, No. 9 Dongdansantiao, Dongcheng District, 100730, Beijing, China
| | - Xin Tong
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China.,China National Clinical Research Center for Neurological Diseases, No. 119, South 4th Ring West Road, Fengtai District, 100070, Beijing, China
| | - Baorui Zhang
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China.,China National Clinical Research Center for Neurological Diseases, No. 119, South 4th Ring West Road, Fengtai District, 100070, Beijing, China
| | - Luyao Wang
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China.,China National Clinical Research Center for Neurological Diseases, No. 119, South 4th Ring West Road, Fengtai District, 100070, Beijing, China
| | - Erkang Guo
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China.,China National Clinical Research Center for Neurological Diseases, No. 119, South 4th Ring West Road, Fengtai District, 100070, Beijing, China
| | - Peng Qi
- Department of Neurosurgery, Beijing Hospital, National Center of Gerontology, No. 1 DaHua Road, Dong Dan, 100730, Beijing, China
| | - Jun Lu
- Department of Neurosurgery, Beijing Hospital, National Center of Gerontology, No. 1 DaHua Road, Dong Dan, 100730, Beijing, China
| | - Zhongxue Wu
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China
| | - Daming Wang
- Department of Neurosurgery, Beijing Hospital, National Center of Gerontology, No. 1 DaHua Road, Dong Dan, 100730, Beijing, China. .,Graduate School of Peking Union Medical College, No. 9 Dongdansantiao, Dongcheng District, 100730, Beijing, China.
| | - Aihua Liu
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China. .,Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, 100070, Beijing, China. .,China National Clinical Research Center for Neurological Diseases, No. 119, South 4th Ring West Road, Fengtai District, 100070, Beijing, China.
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18
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Jung YJ, Chang CH, Kim JH. Advantages of Coil Embolization Performed Immediately After Diagnostic Cerebral Digital Subtraction Angiography in Unruptured Intracranial Aneurysms: Patients' Perspective. World Neurosurg 2019; 130:e573-e576. [PMID: 31254708 DOI: 10.1016/j.wneu.2019.06.154] [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: 04/16/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND We are inevitably faced with the need to perform coil embolization immediately after diagnostic cerebral digital subtraction angiography (DSA) for economic reasons, patient convenience, fear of rupture, and other reasons. Here we report the advantages of coil embolization performed immediately after diagnostic cerebral DSA for unruptured intracranial aneurysms (UIAs) from the patients' perspective. METHODS Between January 2017 and October 2018, 145 patients were treated for UIAs with endovascular coil embolization at the Yeungnam University Medical Center. There were 87 patients in the group in which coil embolization was to be performed at least 1 week after diagnostic cerebral DSA (regular [R] group) and 58 patients in the group in which coil embolization was to be performed immediately after diagnostic cerebral DSA (immediate [I] group). RESULTS There were no statistically significant between group differences in any factor analyzed expect for medical expenses (out-of-pocket costs), 2,218,416 KRW (1963 USD) for the R group and 1,128,906 KRW (999 USD) for the I group (P < 0.001). There were no statistically significant differences in the rate of complications between the 2 groups, with 4 minor complications and 1 death in the R group and 3 minor complications and 1 death in the I group. CONCLUSIONS Our findings indicate that coil embolization performed immediately after diagnostic cerebral DSA can be a relatively safe alternative approach to treating patients with UIAs.
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Affiliation(s)
- Young-Jin Jung
- Department of Neurosurgery, College of Medicine, Yeungnam University, Namgu, Daegu, Korea
| | - Chul-Hoon Chang
- Department of Neurosurgery, College of Medicine, Yeungnam University, Namgu, Daegu, Korea
| | - Jong-Hoon Kim
- Department of Neurosurgery, College of Medicine, Yeungnam University, Namgu, Daegu, Korea.
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Kwinta BM, Kliś KM, Krzyżewski RM, Wilk A, Dragan M, Grzywna E, Popiela T. Elective Management of Unruptured Intracranial Aneurysms in Elderly Patients in a High-Volume Center. World Neurosurg 2019; 126:e1343-e1351. [DOI: 10.1016/j.wneu.2019.03.094] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/08/2019] [Accepted: 03/09/2019] [Indexed: 10/27/2022]
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Ogilvy CS, Jordan NJ, Ascanio LC, Enriquez-Marulanda AA, Salem MM, Moore JM, Thomas AJ. Surgical and Endovascular Comprehensive Treatment Outcomes of Unruptured Intracranial Aneurysms: Reduction of Treatment Bias. World Neurosurg 2019; 126:e878-e887. [PMID: 30872200 DOI: 10.1016/j.wneu.2019.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/01/2019] [Accepted: 03/02/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Determining the risks of treatment of unruptured intracranial aneurysms is critical in the decision-making process of management. Most studies have reported the results for endovascular or surgical management. Our objective was to better delineate the risk estimates for unruptured intracranial aneurysms treated with surgical or endovascular techniques in a comprehensive fashion, according to the patients' risk profiles. METHODS Data were gathered from 553 patients with 658 unruptured intracranial aneurysms treated at a single institution from 2014 to 2017. The decision to treat was determined by a projected morbidity that was lower than the natural history rupture risk. Data on aneurysm size, location, patient age, and outcome at the last clinical visit (modified Rankin scale scores) were collected and analyzed retrospectively. RESULTS The mean patient age was 59 years, and the mean lesion size was 7.3 mm. Microsurgical clipping was used in 251 lesions (38.2%), endovascular coiling in 70 (10.6%), stent-assisted coiling in 89 (13.5%), and a pipeline embolization device in 248 (37.7%). Complications from the procedures or during hospital admission occurred 66 lesions (10% of the total). Of these 66 complications, 28 (4.32% of the total) were non-neurological, treated, and resolved without permanent morbidity. Neurologic complications occurred in 38 procedures (5.7% of the total). Of these, 7 (1%) resulted in a permanent poor outcome (modified Rankin scale score, 3-6). CONCLUSION Aneurysmal obliteration using endovascular and surgical approaches in a comprehensive fashion has low treatment risks for unruptured aneurysms. The nomograms generated are useful in the discussion with patients and families regarding the risks of total institutional treatment of unruptured aneurysms.
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Affiliation(s)
- Christopher S Ogilvy
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States.
| | - Noah J Jordan
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States
| | - Luis C Ascanio
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States
| | - Alejandro A Enriquez-Marulanda
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States
| | - Mohamed M Salem
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States
| | - Justin M Moore
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States
| | - Ajith J Thomas
- Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States
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Algra AM, Lindgren A, Vergouwen MDI, Greving JP, van der Schaaf IC, van Doormaal TPC, Rinkel GJE. Procedural Clinical Complications, Case-Fatality Risks, and Risk Factors in Endovascular and Neurosurgical Treatment of Unruptured Intracranial Aneurysms: A Systematic Review and Meta-analysis. JAMA Neurol 2019; 76:282-293. [PMID: 30592482 PMCID: PMC6439725 DOI: 10.1001/jamaneurol.2018.4165] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/02/2018] [Indexed: 01/16/2023]
Abstract
Importance The risk of procedural clinical complications and the case-fatality rate (CFR) from preventive treatment of unruptured intracranial aneurysms varies between studies and may depend on treatment modality and risk factors. Objective To assess current procedural clinical 30-day complications and the CFR from endovascular treatment (EVT) and neurosurgical treatment (NST) of unruptured intracranial aneurysms and risk factors of clinical complications. Data Sources We searched PubMed, Excerpta Medica Database, and the Cochrane Database for studies published between January 1, 2011, and January 1, 2017. Study Selection Studies reporting on clinical complications, the CFR, and risk factors, including 50 patients or more undergoing EVT or NST for saccular unruptured intracranial aneurysms after January 1, 2000, were eligible. Data Extraction and Synthesis Per treatment modality, we analyzed clinical complication risk and the CFR with mixed-effects logistic regression models for dichotomous data. For studies reporting data on complication risk factors, we obtained risk ratios (RRs) or odds ratios (ORs) with 95% CIs and pooled risk estimates with weighted random-effects models. Main Outcomes and Measures Clinical complications within 30 days and the CFR. Results We included 114 studies (106 433 patients with 108 263 aneurysms). For EVT (74 studies), the pooled clinical complication risk was 4.96% (95% CI, 4.00%-6.12%), and the CFR was 0.30% (95% CI, 0.20%-0.40%). Factors associated with complications from EVT were female sex (pooled OR, 1.06 [95% CI, 1.01-1.11]), diabetes (OR, 1.81 [95% CI, 1.05-3.13]), hyperlipidemia (OR, 1.76 [95% CI, 1.3-2.37]), cardiac comorbidity (OR, 2.27 [95% CI, 1.53-3.37]), wide aneurysm neck (>4 mm or dome-to-neck ratio >1.5; OR, 1.71 [95% CI, 1.38-2.11]), posterior circulation aneurysm (OR, 1.42 [95% CI, 1.15-1.74]), stent-assisted coiling (OR, 1.82 [95% CI, 1.16-2.85]), and stenting (OR, 3.43 [95% CI, 1.45-8.09]). For NST (54 studies), the pooled complication risk was 8.34% (95% CI, 6.25%-11.10%) and the CFR was 0.10% (95% CI, 0.00%-0.20%). Factors associated with complications from NST were age (OR per year increase, 1.02 [95% CI, 1.01-1.02]), female sex (OR, 0.43 [95% CI, 0.32-0.85]), coagulopathy (OR, 2.14 [95% CI, 1.13-4.06]), use of anticoagulation (OR, 6.36 [95% CI, 2.55-15.85]), smoking (OR, 1.95 [95% CI, 1.36-2.79]), hypertension (OR, 1.45 [95% CI, 1.03-2.03]), diabetes (OR, 2.38 [95% CI, 1.54-3.67]), congestive heart failure (OR, 2.71 [95% CI, 1.57-4.69]), posterior aneurysm location (OR, 7.25 [95% CI, 3.70-14.20]), and aneurysm calcification (OR, 2.89 [95% CI, 1.35-6.18]). Conclusions and Relevance This study identifies risk factors for procedural complications. Large data sets with individual patient data are needed to develop and validate prediction scores for absolute complication risks and CFRs from EVT and NST modalities.
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Affiliation(s)
- Annemijn M. Algra
- Brain Center Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Antti Lindgren
- Department of Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Department of Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Mervyn D. I. Vergouwen
- Brain Center Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Jacoba P. Greving
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Irene C. van der Schaaf
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Tristan P. C. van Doormaal
- Brain Center Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Gabriel J. E. Rinkel
- Brain Center Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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Ernst M, Kriston L, Hanning U, Frölich AM, Fiehler J, Buhk JH. Confidence of treatment decision and perceived risk of procedure-related neurological complications in the management of unruptured intracranial aneurysms. J Neurointerv Surg 2018; 11:479-484. [PMID: 30514734 DOI: 10.1136/neurintsurg-2018-014346] [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: 08/15/2018] [Revised: 10/19/2018] [Accepted: 10/20/2018] [Indexed: 11/03/2022]
Abstract
BACKGROUND AND PURPOSE To evaluate factors influencing the confidence of management recommendation for unruptured intracranial aneurysms (UIAs) and to assess the ability of neurointerventionalists to predict procedure-related neurological complications compared with a 3-point risk score. MATERIALS AND METHODS Twenty-eight neurointerventionalists were asked to evaluate digital subtraction angiographies examinations of patients with UIAs by determining the best management approach, their level of confidence in their management recommendation, and estimating the risk of procedure-related neurological complications. Knowledge and experience in interventional neuroradiology (INR) of each participant were assessed. RESULTS Reliability was moderate regarding any treatment recommendation (ICC=0.49) and low regarding the estimation of risk of complications (ICC=0.38). The recommendation of clipping was less likely with more experience in INR (OR=0.6) and more likely with increasing knowledge (OR=1.7). Odds of recommending WEB device were lower with more experience in INR (OR=0.6), higher in patients with multiple aneurysms (OR=3.6) and increasing neck width (OR=2.7). The recommendation of stent-assisted coiling was more likely with increasing neck width (OR=2.4) and when cerebral ischemic comorbidities were present (OR=2.9). The participants were significantly worse than the risk score (mean area under the curve of 0.53) and not better than random guess in predicting complications. Neither knowledge nor experience in INR was significantly associated with the participants' ability to predict neurological complications. CONCLUSIONS Our study shows a moderate interrater reliability of treatment recommendations of UIAs. Confidence in treatment recommendation varied significantly according to recommended treatments. Overall performance in predicting neurological complications was worse than the risk score and not better than random guess.
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Affiliation(s)
- Marielle Ernst
- Centre for Radiology and Endoscopy, Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Levente Kriston
- Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Uta Hanning
- Centre for Radiology and Endoscopy, Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas M Frölich
- Centre for Radiology and Endoscopy, Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Jens Fiehler
- Centre for Radiology and Endoscopy, Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Jan Hendrik Buhk
- Centre for Radiology and Endoscopy, Department of Diagnostic and Interventional Neuroradiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Morgan MK, O'Donnell JM, Heller GZ, Rogers JM. Comparing outcome scales for unruptured intracranial aneurysms: A prospective cohort study. J Clin Neurosci 2018; 58:56-63. [DOI: 10.1016/j.jocn.2018.10.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 09/10/2018] [Accepted: 10/14/2018] [Indexed: 01/02/2023]
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Kosty JA, Andaluz NO, Gozal YM, Krueger BM, Scoville J, Zuccarello M. Microsurgical treatment for unruptured intracranial aneurysms: a modern single surgeon series. Br J Neurosurg 2018; 33:322-327. [DOI: 10.1080/02688697.2018.1527286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J. A. Kosty
- Department of Neurosurgery, University of Louisville, Louisville, KY, USA
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - N. O. Andaluz
- Department of Neurosurgery, University of Louisville, Louisville, KY, USA
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Y. M. Gozal
- Department of Neurosurgery, University of Louisville, Louisville, KY, USA
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - B. M. Krueger
- Department of Neurosurgery, University of Louisville, Louisville, KY, USA
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - J. Scoville
- Department of Neurosurgery, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - M. Zuccarello
- Department of Neurosurgery, University of Louisville, Louisville, KY, USA
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, OH, USA
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25
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Controversies on treatment of unruptured intracranial aneurysms. Value of UIATS and PHASES scores in a daily practice in a Spanish population. INTERDISCIPLINARY NEUROSURGERY 2018. [DOI: 10.1016/j.inat.2018.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Zu QQ, Liu XL, Wang B, Zhou CG, Xia JG, Zhao LB, Shi HB, Liu S. Recovery of oculomotor nerve palsy after endovascular treatment of ruptured posterior communicating artery aneurysm. Neuroradiology 2017; 59:1165-1170. [DOI: 10.1007/s00234-017-1909-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 08/22/2017] [Indexed: 11/27/2022]
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Ji W, Xu L, Wang P, Sun L, Feng X, Lv X, Liu A, Wu Z. Risk Factors to Predict Neurologic Complications After Endovascular Treatment of Unruptured Paraclinoid Aneurysms. World Neurosurg 2017; 104:89-94. [PMID: 28366751 DOI: 10.1016/j.wneu.2017.03.098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 03/20/2017] [Accepted: 03/21/2017] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Unruptured paraclinoid aneurysms are often asymptomatic, and endovascular coiling is the main treatment. However, endovascular treatment of these lesions still leads to neurologic complications. We aimed to identify predictors of neurologic complications in these lesions. METHODS We retrospectively analyzed patients with unruptured paraclinoid aneurysms who were treated with endovascular coiling between January 2014 and December 2015. A neurologic complication was defined as any transient or permanent increase in the modified Rankin Scale score after aneurysm embolization. Univariate and mulitivariate logistic regression analyses were performed to assess the risk factors of neurologic complications. RESULTS Of the 443 unruptured paraclinoid aneurysms that were included in this study, the incidence of neurologic complications was 5.2%. Neurologic complications were highly correlated with hypertension (odds ratio [OR], 3.147; 95% confidence interval [CI], 1.217-8.138; P = 0.018), cerebral ischemic comorbidities (OR, 3.396; 95% CI, 1.378-8.374; P = 0.008), and aneurysm size (OR, 7.714; 95% CI, 1.784-31.635; P < 0.001), and irregular shape (OR, 3.157; 95% CI, 1.239-8.043; P = 0.016) in the univariate analysis. Cerebral ischemic comorbidities (OR, 2.837, 95% CI, 1.070-7.523; P = 0.036) and aneurysm size as dichotomous variables (OR, 7.557; 95% CI, 2.975-19.198; P < 0.001) were strongly correlated with neurologic complications in the final adjusted multivariate logistic analysis. CONCLUSIONS Unruptured paraclinoid aneurysms after endovascular treatments had 5.2% of neurologic complications. Cerebral ischemic comorbidities and aneurysm size were predictors of neurologic complications.
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Affiliation(s)
- Wenjun Ji
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Lianfang Xu
- Department of Nursing, The Second Hospital of Yulin, Shaanxi Province, China
| | - Pengfei Wang
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Liqian Sun
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xin Feng
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xianli Lv
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Aihua Liu
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
| | - Zhongxue Wu
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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Unruptured intracranial aneurysms: An updated review of current concepts for risk factors, detection and management. Rev Neurol (Paris) 2017; 173:542-551. [PMID: 28583271 DOI: 10.1016/j.neurol.2017.05.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 12/03/2016] [Accepted: 05/12/2017] [Indexed: 02/07/2023]
Abstract
The management of patients with unruptured intracranial aneurysms (UIAs) is a complex clinical challenge and constitutes an immense field of research. While a preponderant proportion of these aneurysms never rupture, the consequences of such an event are severe and represent an important healthcare problem. To date, however, the natural history of UIAs is not completely understood and there is no accurate means to discriminate the UIAs that will rupture from those that will not. Yet, a good understanding of the recent evidence and future perspectives is needed when advising a patient with IA to tailor any information to the given patient's level of risk and psychoaffective status. Thus, this review addresses the current concepts of epidemiology, risk factors, detection and management of UIAs.
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Feng X, Ji W, Qian Z, Liu P, Kang H, Wen X, Xu W, Li Y, Jiang C, Wu Z, Liu A. Bifurcation Location Is Significantly Associated with Rupture of Small Intracranial Aneurysms (<5 mm). World Neurosurg 2016; 98:538-545. [PMID: 27888082 DOI: 10.1016/j.wneu.2016.11.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 11/11/2016] [Accepted: 11/12/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND OBJECTIVE Patients with small (<5 mm) unruptured intracranial aneurysms (UIAs) are at risk of subarachnoid hemorrhage, but risk assessment of these patients remains controversial in daily clinical practice. We aimed to identify the risk factors of aneurysmal rupture in these patients. METHODS We retrospectively analyzed consecutive patients with small UIAs who were admitted to our center between February 2009 and December 2014. The enrolled patients were divided into ruptured and unruptured groups. The risk factors for aneurysmal rupture were determined using multivariate logistic regression analysis. RESULTS A total of 548 patients with 618 small intracranial aneurysms (267 ruptured and 351 unruptured) were included. Univariate analysis showed that rupture of small aneurysms was related to sex, age, smoking, hypertension, aspect ratio, size ratio, irregular shape, aneurysm width, height, and neck diameter, and location at bifurcation or posterior circulation. Multivariate logistic regression showed that rupture was associated with bifurcation location (odds ratio [OR], 5.409; 95% confidence interval [CI], 3.656-8.001; P < 0.001), size ratio (OR, 3.092; 95% CI, 2.002-4.774; P < 0.001), location (OR, 2.624; 95% CI, 1.428-4.824; P = 0.002), hypertension (OR, 1.698; 95% CI, 1.1140-2.527; P = 0.009), and age at diagnosis of UIA (OR, 1.826; 95% CI, 1.225-2.723; P = 0.003). CONCLUSIONS This study showed that 70.4% of small ruptured intracranial aneurysms (<5 mm) were located at parent artery bifurcations and that bifurcation location was a significant independent factor for the risk of rupture of small UIAs (<5 mm). Prophylactic treatment should be recommended for small UIAs in this location.
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Affiliation(s)
- Xin Feng
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wenjun Ji
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Zenghui Qian
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Peng Liu
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Huibin Kang
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaolong Wen
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wenjuan Xu
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Youxiang Li
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Chuhan Jiang
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Zhongxue Wu
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Aihua Liu
- Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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30
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Etminan N, Rinkel GJ. Unruptured intracranial aneurysms: development, rupture and preventive management. Nat Rev Neurol 2016; 12:699-713. [DOI: 10.1038/nrneurol.2016.150] [Citation(s) in RCA: 233] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Guan J, Karsy M, Couldwell WT, Schmidt RH, Taussky P, MacDonald JD, Park MS. Factors influencing management of unruptured intracranial aneurysms: an analysis of 424 consecutive patients. J Neurosurg 2016; 127:96-101. [PMID: 27715433 DOI: 10.3171/2016.7.jns16975] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The choice between treating and observing unruptured intracranial aneurysms is often difficult, with little guidance on which variables should influence decision making on a patient-by-patient basis. Here, the authors compared demographic variables, aneurysm-related variables, and comorbidities in patients who received microsurgical or endovascular treatment and those who were conservatively managed to determine which factors push the surgeon toward recommending treatment. METHODS A retrospective chart review was conducted of all patients diagnosed with an unruptured intracranial aneurysm at their institution between January 1, 2013, and January 1, 2016. These patients were dichotomized based on whether their aneurysm was treated. Demographic, geographic, socioeconomic, comorbidity, and aneurysm-related information was analyzed to assess which factors were associated with the decision to treat. RESULTS A total of 424 patients were identified, 163 who were treated surgically or endovascularly and 261 who were managed conservatively. In a multivariable model, an age < 65 years (OR 2.913, 95% CI 1.298-6.541, p = 0.010), a lower Charlson Comorbidity Index (OR 1.536, 95% CI 1.274-1.855, p < 0.001), a larger aneurysm size (OR 1.176, 95% CI 1.100-1.257, p < 0.001), multiple aneurysms (OR 2.093, 95% CI 1.121-3.907, p = 0.020), a white race (OR 2.288, 95% CI 1.245-4.204, p = 0.008), and living further from the medical center (OR 2.125, 95% CI 1.281-3.522, p = 0.003) were all associated with the decision to treat rather than observe. CONCLUSIONS Whereas several factors were expected to be considered in the decision to treat unruptured intracranial aneurysms, including age, Charlson Comorbidity Index, aneurysm size, and multiple aneurysms, other factors such as race and proximity to the medical center were unanticipated. Further studies are needed to identify such biases in patient treatment and improve treatment delineation based on patient-specific aneurysm rupture risk.
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Affiliation(s)
- Jian Guan
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Michael Karsy
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - William T Couldwell
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Richard H Schmidt
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Philipp Taussky
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Joel D MacDonald
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Min S Park
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
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