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Zhang H, Lu W, Liang J, Wang H, Zhao Y, Yang X, Feng L, Li M. Risk factors of rupture and mortality for intracranial aneurysms associated with moyamoya disease: a multicenter retrospective study. Neurol Sci 2024; 45:2137-2147. [PMID: 38032535 DOI: 10.1007/s10072-023-07219-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVE The aim of this study was to analyze the risk factors for aSAH and subsequent death in patients with MMD. METHODS Chinese Multi-Center Cerebral Aneurysm Database (CMAD) is a multicenter study registered in China. From 2016 to 2021, 181 patients with MMD in CMAD. Logistic regression analysis was used to identify risk factors for intracranial aneurysm rupture. Univariate and multivariate Cox regression were used to risk factors associated with ruptured intracranial aneurysm patients with MMD follow-up events (death). Cumulative survival was described using the Kaplan‒Meier technique. RESULTS Of 11,686 IA patients, 181 (1.5%) had MMD. In the study, 158 patients with MMD were enrolled. There were 53 ruptured aneurysms and 105 unruptured aneurysms. In multivariate analysis, age (≥ 60 years OR 2.350 [1.008-5.478]), location (middle cerebral artery OR5.431 [1.347-21.889]; posterior circulation arteries OR 3.189 [1.110-9.163]) and aneurysm size (≥ 5 mm OR 2.855 [1.274-6.397], P = 0.011) were associated with intracranial aneurysm rupture in patients with MMD. In the 2-year follow-up time of aSAH patients, 44% (22/50) had favorable outcomes, 14% (7/50) had unfavorable outcomes and 42% (21/50) had death. Hypertension (HR 6.643 [1.620-27.244], P = 0.009) and Hunt-Hess grade (H&H grade IV HR 14.852 [3.151-70.011], P = 0.001; H&H grade V HR 17.697 [3.046-102.842], P = 0.001) were associated with increased mortality. In contrast, both ST (HR 0.168 [0.031-0.921], P = 0.04) and ET (HR 0.289 [0.087-0.957], P = 0.042) achieved good results. CONCLUSIONS This study showed that the proportion of MMD in IA patients was approximately 1.5% (181/11686). For patients with cerebral ischemia on admission, revascularization may prevent the rupture of intracranial aneurysms. Age ≥ 60 years, location, and aneurysm size ≥ 5 mm were associated with IA rupture. Further analysis showed that being located in the middle cerebral artery was the most relevant risk factor for rupture. Patients with ruptured IA who underwent ST or ET had better clinical outcomes and survival than those who underwent CT; however, hypertension and poor initial Hunt-Hess grade were independent predictors of death.
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Affiliation(s)
- Hengrui Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Wenpeng Lu
- Jining No 1, People's Hospital, Jining, China
| | - Jun Liang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | | | - Yan Zhao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, People's Republic of China
| | - Xinyu Yang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, People's Republic of China.
- Tianjin Key Laboratory of Injuries, Variations, and Regeneration of the Nervous System, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China.
| | - Lei Feng
- Jining No 1, People's Hospital, Jining, China.
| | - Mu Li
- Tianjin First Central Hospital, Tianjin, China.
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Pettersson SD, Khorasanizadeh M, Maglinger B, Garcia A, Wang SJ, Taussky P, Ogilvy CS. Trends in the Age of Patients Treated for Unruptured Intracranial Aneurysms from 1990 to 2020. World Neurosurg 2023; 178:233-240.e13. [PMID: 37562685 DOI: 10.1016/j.wneu.2023.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/12/2023]
Abstract
BACKGROUND The decision for treatment for unruptured intracranial aneurysms (UIAs) is often difficult. Innovation in endovascular devices have improved the benefit-to-risk profile especially for elderly patients; however, the treatment guidelines from the past decade often recommend conservative management. It is unknown how these changes have affected the overall age of the patients selected for treatment. Herein, we aimed to study potential changes in the average age of the patients that are being treated over time. METHODS A systematic search of the literature was performed to identify all studies describing the age of the UIAs that were treated by any modality. Scatter diagrams with trend lines were used to plot the age of the patients treated over time and assess the presence of a potential significant trend via statistical correlation tests. RESULTS A total of 280 studies including 83,437 UIAs treated between 1987 and 2021 met all eligibility criteria and were entered in the analysis. Mean age of the patients was 55.5 years, and 70.7% were female. There was a significant increasing trend in the age of the treated patients over time (Spearman r: 0.250; P < 0.001), with a 1-year increase in the average age of the treated patients every 5 years since 1987. CONCLUSIONS The present study indicates that based on the treated UIA patient data published in the literature, older UIAs are being treated over time. This trend is likely driven by safer treatments while suggesting that re-evaluation of certain UIA treatment decision scores may be of great interest.
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Affiliation(s)
- Samuel D Pettersson
- Division of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - MirHojjat Khorasanizadeh
- Division of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Benton Maglinger
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Alfonso Garcia
- Division of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - S Jennifer Wang
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Philipp Taussky
- Division of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Christopher S Ogilvy
- Division of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
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3
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Budiansky AS, Hjartarson EP, Polis T, Krolczyk G, Sinclair J. Emerging anesthesia techniques for managing intraoperative rupture of cerebral aneurysms. Int Anesthesiol Clin 2023; 61:64-72. [PMID: 37218511 DOI: 10.1097/aia.0000000000000400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- Adele S Budiansky
- Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Emma P Hjartarson
- Department of Anesthesiology and Pain Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Tomasz Polis
- Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Gregory Krolczyk
- Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - John Sinclair
- Division of Neurosurgery, The Ottawa Hospital, Ottawa, Ontario, Canada
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4
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Shen J, Huang K, Zhu Y, Weng Y, Xiao F, Mungur R, Wu F, Pan J, Zhan R. Mean arterial pressure-aneurysm neck ratio predicts the rupture risk of intracranial aneurysm by reflecting pressure at the dome. Front Aging Neurosci 2023; 15:1082800. [PMID: 36819719 PMCID: PMC9928879 DOI: 10.3389/fnagi.2023.1082800] [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: 10/28/2022] [Accepted: 01/16/2023] [Indexed: 02/04/2023] Open
Abstract
Background and purpose The unruptured intracranial aneurysm (UIA) has high disability and mortality rate after rupture, it is particularly important to assess the risk of UIA and to carry out individualized treatment. The objective of this research is to introduce a novel parameter to predict the rupture risk of UIA. Methods A total of 649 patients with 964 intracranial aneurysms in our center were enrolled. A novel parameter named mean arterial pressure-aneurysmal neck ratio (MAPN) was defined. Ten baseline clinical features and twelve aneurysm morphological characteristics were extracted to generate the MAPN model. The discriminatory performance of the MAPN model was compared with the PHASES score and the UCAS score. Results In hemodynamic analysis, MAPN was positively correlated with wall shear stress and aneurysm top pressure, with Pearson correlation coefficients of 0.887 and 0.791, respectively. The MAPN was larger in the ruptured group (36.62 ± 18.96 vs. 28.38 ± 14.58, P < 0.001). The area under the curve (AUC) of the MAPN was superior than the AUC of aspect ratio (AR) and the bottleneck factor (BN), they were 0.64 (P < 0.001; 95% CI, 0.588-0.692), 0.611 (P < 0.001; 95% CI, 0.559-0.663) and 0.607 (P < 0.001; 95% CI, 0.554-0.660), respectively. The MAPN model constructed by aneurysm size, aneurysm location, presence of secondary sacs and MAPN, demonstrated good discriminatory ability. The MAPN model exhibited superior performance compared with the UCAS score and the PHASES score (the AUC values were 0.799 [P < 0.001; 95% CI, 0.756-0.840], 0.763 [P < 0.001; 95% CI,0.719-0.807] and 0.741 [P < 0.001; 95% CI, 0.695-0.787], respectively; the sensitivities were 0.849, 0.758 and 0.753, respectively). Conclusions Research demonstrates the potential of MAPN to augment the clinical decision-making process for assessing the rupture risk of UIAs.
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Zhong P, Lu Z, Li Z, Li T, Lan Q, Liu J, Wang Z, Chen S, Huang Q. Effect of Renin-Angiotensin-Aldosterone System Inhibitors on the Rupture Risk Among Hypertensive Patients With Intracranial Aneurysms. Hypertension 2022; 79:1475-1486. [PMID: 35656813 DOI: 10.1161/hypertensionaha.122.18970] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Mounting experimental evidence supports the concept that the RAAS (renin-angiotensin-aldosterone system) is involved in the pathogenesis of intracranial aneurysm rupture. However, whether RAAS inhibitors could reduce the rupture risk of intracranial aneurysms remains unclear. METHODS We performed a chart review of a multicenter, prospectively maintained database of 3044 hypertensive patients with intracranial aneurysms from 20 medical centers in China. The patients were separated into ruptured and unruptured groups. Univariable and multivariable logistical regression analyses were performed to determine the association between the use of RAAS inhibitors and the rupture risk. Sensitivity analyses and subgroup analyses were performed to verify the robustness of the results. RESULTS In multivariable analyses, female sex, passive smoking, uncontrolled, or unmonitored hypertension, use of over 2 antihypertensive medications, RAAS inhibitors use, antihyperglycemic agents use, hyperlipidemia, ischemic stroke, and aneurysmal location were independently associated with the rupture risk. The use of RAAS inhibitors was significantly associated with a reduced rupture risk compared with the use of non-RAAS inhibitors (odds ratio, 0.490 [95% CI, 0.402-0.597]; P=0.000). Compared with the use of non-RAAS inhibitors, the use of ACE (angiotensin-converting enzyme) inhibitors (odds ratio, 0.559 [95% CI, 0.442-0.709]; P=0.000) and use of ARBs (angiotensin receptor blockers; odds ratio, 0.414 [95% CI, 0.315-0.542]; P=0.000) were both significantly associated with a reduced rupture risk. The negative association of the rupture risk with RAAS inhibitors was consistent across 3 analyzed data and the predefined subgroups (including controlled hypertension). CONCLUSIONS The use of RAAS inhibitors was significantly associated with a decreased rupture risk independent of blood pressure control among hypertensive patients with intracranial aneurysms.
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Affiliation(s)
- Ping Zhong
- Department of Neurosurgery (P.Z., Z. Li, S.C.), School of Medicine, Xiamen University, China.,BE and Phase I Clinical Trial Center (P.Z.), School of Medicine, Xiamen University, China
| | - Zhiwen Lu
- Neurovascular Center, Changhai Hospital, Second Military Medical University, Shanghai, China (Z. Lu, J.L., Q.H)
| | - Zhangyu Li
- Department of Neurosurgery (P.Z., Z. Li, S.C.), School of Medicine, Xiamen University, China
| | - Tianxiao Li
- Neurovascular Center, Henan Provincial People's Hospital, Zhengzhou, China (T.L.)
| | - Qing Lan
- Department of Neurosurgery, Second Affiliated Hospital of Soochow University, Suzhou, China (Q.L.)
| | - Jianmin Liu
- Neurovascular Center, Changhai Hospital, Second Military Medical University, Shanghai, China (Z. Lu, J.L., Q.H)
| | - Zhanxiang Wang
- Department of Neurosurgery, Xiamen Key Laboratory of Brain Center (Z.W.), School of Medicine, Xiamen University, China.,The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University and Department of Neuroscience, Institute of Neurosurgery (Z.W.), School of Medicine, Xiamen University, China
| | - Sifang Chen
- Department of Neurosurgery (P.Z., Z. Li, S.C.), School of Medicine, Xiamen University, China
| | - Qinghai Huang
- Neurovascular Center, Changhai Hospital, Second Military Medical University, Shanghai, China (Z. Lu, J.L., Q.H)
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Shen Y, Molenberg R, Bokkers RPH, Wei Y, Uyttenboogaart M, van Dijk JMC. The Role of Hemodynamics through the Circle of Willis in the Development of Intracranial Aneurysm: A Systematic Review of Numerical Models. J Pers Med 2022; 12:jpm12061008. [PMID: 35743791 PMCID: PMC9225067 DOI: 10.3390/jpm12061008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/13/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022] Open
Abstract
Background: The role of regional hemodynamics in the intracranial aneurysmal formation, growth, and rupture has been widely discussed based on numerical models over the past decades. Variation of the circle of Willis (CoW), which results in hemodynamic changes, is associated with the aneurysmal formation and rupture. However, such correlation has not been further clarified yet. The aim of this systematic review is to investigate whether simulated hemodynamic indices of the CoW are relevant to the formation, growth, or rupture of intracranial aneurysm. Methods: We conducted a review of MEDLINE, Web of Science, and EMBASE for studies on the correlation between hemodynamics indices of the CoW derived from numerical models and intracranial aneurysm up to December 2020 in compliance with PRISMA guidelines. Results: Three case reports out of 1046 publications met our inclusion and exclusion criteria, reporting 13 aneurysms in six patients. Eleven aneurysms were unruptured, and the state of the other two aneurysms was unknown. Wall shear stress, oscillatory shear index, von-Mises tension, flow velocity, and flow rate were reported as hemodynamic indices. Due to limited cases and significant heterogeneity between study settings, meta-analysis could not be performed. Conclusion: Numerical models can provide comprehensive information on the cerebral blood flow as well as local flow characteristics in the intracranial aneurysm. Based on only three case reports, no firm conclusion can be drawn regarding the correlation between hemodynamic parameters in the CoW derived from numerical models and aneurysmal formation or rupture. Due to the inherent nature of numerical models, more sensitive analysis and rigorous validations are required to determine its measurement error and thus extend their application into clinical practice for personalized management. Prospero registration number: CRD42021125169.
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Affiliation(s)
- Yuanyuan Shen
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (Y.S.); (R.M.)
| | - Rob Molenberg
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (Y.S.); (R.M.)
| | - Reinoud P. H. Bokkers
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (R.P.H.B.); (M.U.)
| | - Yanji Wei
- Engineering and Technology Institute Groningen, Faculty of Science & Engineering, University of Groningen, 9747 AG Groningen, The Netherlands;
| | - Maarten Uyttenboogaart
- Department of Radiology, Medical Imaging Center, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (R.P.H.B.); (M.U.)
- Department of Neurology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
| | - J. Marc C. van Dijk
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (Y.S.); (R.M.)
- Correspondence:
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Zhong P, Lu Z, Li T, Lan Q, Liu J, Wang Z, Chen S, Huang Q. Association Between Regular Blood Pressure Monitoring and the Risk of Intracranial Aneurysm Rupture: a Multicenter Retrospective Study with Propensity Score Matching. Transl Stroke Res 2022; 13:983-994. [PMID: 35314955 DOI: 10.1007/s12975-022-01006-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/24/2022] [Accepted: 03/10/2022] [Indexed: 12/20/2022]
Abstract
Although hypertension is a known risk factor for intracranial aneurysm rupture, the benefit of the management of blood pressure in reducing the rupture risk of intracranial aneurysms remains largely unknown, especially for regular blood pressure monitoring. We conducted a retrospective analysis of a prospectively maintained database of 3965 patients with saccular intracranial aneurysms from 20 medical centers in China. The patients were divided into the non-hypertensive group and hypertensive group. Propensity score matching was applied to identify a cohort of patients with similar baseline characteristics. Univariable and multivariable logistic regression analyses were performed to determine the association between intracranial aneurysm rupture and the management of blood pressure. After matching, hypertension was significantly associated with an increased rupture risk of intracranial aneurysms (OR = 2.559, 95%CI = 2.161-3.030, P = 0.000). For the management of blood pressure, controlled hypertension (OR = 1.803, 95%CI = 1.409-2.307, P = 0.000), uncontrolled hypertension (OR = 2.178, 95%CI = 1.756-2.700, P = 0.000), and hypertension without regular blood pressure monitoring (OR = 5.000, 95%CI = 3.823-6.540, P = 0.000) were all significantly associated with a higher rupture risk compared with the absence of hypertension. Moreover, hypertension without regular blood pressure monitoring was associated with a higher rupture risk compared with either controlled hypertension (OR = 3.807, 95%CI = 2.687-5.395, P = 0.000) or hypertension with regular blood pressure monitoring (including controlled and uncontrolled hypertension) (OR = 2.893, 95%CI = 2.319-3.609, P = 0.000). The absence of regular blood pressure monitoring was significantly associated with an increased risk of intracranial aneurysm rupture, emphasizing the importance of implementation of regular blood pressure monitoring in hypertensive patients with intracranial aneurysms.
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Affiliation(s)
- Ping Zhong
- BE and Phase I Clinical Trial Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Zhiwen Lu
- Neurovascular Center, Changhai Hospital, Second Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Tianxiao Li
- Neurovascular Center, Henan Provincial People's Hospital, Zhengzhou, China
| | - Qing Lan
- Department of Neurosurgery, Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Jianmin Liu
- Neurovascular Center, Changhai Hospital, Second Military Medical University, Changhai Road 168, Shanghai, 200433, China
| | - Zhanxiang Wang
- Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, the First Affiliated Hospital of Xiamen University, Xiamen, China.,Department of Neuroscience, Institute of Neurosurgery, School of Medicine, Xiamen University, Xiamen, China
| | - Sifang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, No. 55 Zhenhai Road, Xiamen, 361003, Fujian, China.
| | - Qinghai Huang
- Neurovascular Center, Changhai Hospital, Second Military Medical University, Changhai Road 168, Shanghai, 200433, China.
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Aghli Y, Dayyani M, Golparvar B, Baharvahdat H, Blanc R, Piotin M, Niazmand H. Image-based computational hemodynamic analysis of an anterior communicating aneurysm treated with the Woven EndoBridge device. INTERDISCIPLINARY NEUROSURGERY 2021. [DOI: 10.1016/j.inat.2021.101251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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9
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Kim J, Kim JH, Lee HS, Suh SH, Lee KY. Association between longitudinal blood pressure and prognosis after treatment of cerebral aneurysm: A nationwide population-based cohort study. PLoS One 2021; 16:e0252042. [PMID: 34043701 PMCID: PMC8158927 DOI: 10.1371/journal.pone.0252042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 05/08/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND High blood pressure is a major risk factor for the development and rupture of cerebral aneurysm. Endovascular coil embolization and surgical clipping are established procedures to treat cerebral aneurysm. However, longitudinal data of blood pressure after the treatment of cerebral aneurysm and its impact on long-term prognosis are not well known. METHODS This retrospective cohort study included 1275 patients who underwent endovascular coil embolization (n = 558) or surgical clipping (n = 717) of cerebral aneurysm in 2002-2015 using the nationwide health screening database of Korea. Systolic and diastolic blood pressure of patients were repeatedly obtained from the nationwide health screening program. We performed a multivariate time-dependent Cox regression analysis of the primary composite outcome of stroke, myocardial infarction, and all-cause death. RESULTS During the mean follow-up period of 6.13 ± 3.41 years, 89 patients suffered the primary outcome. Among the total 3546 times of blood pressure measurement, uncontrolled high blood pressure (systolic ≥140 mmHg or diastolic ≥90 mmHg) was 22.9%. There was a significantly increased risk of primary outcome with high systolic (adjusted HR [95% CI] per 10 mmHg, 1.16 [1.01-1.35]) and diastolic (adjusted HR [95% CI] per 10 mmHg, 1.32 [1.06-1.64]) blood pressure. CONCLUSIONS High blood pressure is prevalent even in patients who received treatment for cerebral aneurysm, which is significantly associated with poor outcome. Strict control of high blood pressure may further improve the prognosis of patients with cerebral aneurysm.
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Affiliation(s)
- Jinkwon Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.,Department of Neurology, CHA Bundang Medical Center, Seongnam, Korea
| | - Jang Hoon Kim
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea
| | - Hye Sun Lee
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Hyun Suh
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung-Yul Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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10
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Optimal Hemodynamic Parameters for Brain-injured Patients in the Clinical Setting: A Narrative Review of the Evidence. J Neurosurg Anesthesiol 2021; 34:288-299. [PMID: 33443353 DOI: 10.1097/ana.0000000000000752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/07/2020] [Indexed: 11/25/2022]
Abstract
Defining optimal hemodynamic targets for brain-injured patients is a challenging undertaking. The physiological interference observed in various intracranial pathologies can have varying effects on cerebral physiology at different time points. This narrative review provides an overview of cerebral autoregulatory physiology and common misconceptions, and examines the physiological considerations and clinical evidence for determining optimal hemodynamic parameters in acutely brain-injured patients with relevance to modern neuroanesthesia and neurocritical care practice.
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11
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Neifert SN, Chapman EK, Martini ML, Shuman WH, Schupper AJ, Oermann EK, Mocco J, Macdonald RL. Aneurysmal Subarachnoid Hemorrhage: the Last Decade. Transl Stroke Res 2020; 12:428-446. [PMID: 33078345 DOI: 10.1007/s12975-020-00867-0] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022]
Abstract
Aneurysmal subarachnoid hemorrhage (SAH) affects six to nine people per 100,000 per year, has a 35% mortality, and leaves many with lasting disabilities, often related to cognitive dysfunction. Clinical decision rules and more sensitive computed tomography (CT) have made the diagnosis of SAH easier, but physicians must maintain a high index of suspicion. The management of these patients is based on a limited number of randomized clinical trials (RCTs). Early repair of the ruptured aneurysm by endovascular coiling or neurosurgical clipping is essential, and coiling is superior to clipping in cases amenable to both treatments. Aneurysm repair prevents rebleeding, leaving the most important prognostic factors for outcome early brain injury from the hemorrhage, which is reflected in the neurologic condition of the patient, and delayed cerebral ischemia (DCI). Observational studies suggest outcomes are better when patients are managed in specialized neurologic intensive care units with inter- or multidisciplinary clinical groups. Medical management aims to minimize early brain injury, cerebral edema, hydrocephalus, increased intracranial pressure (ICP), and medical complications. Management then focuses on preventing, detecting, and treating DCI. Nimodipine is the only pharmacologic treatment that is approved for SAH in most countries, as no other intervention has demonstrated efficacy. In fact, much of SAH management is derived from studies in other patient populations. Therefore, further study of complications, including DCI and other medical complications, is needed to optimize outcomes for this fragile patient population.
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Affiliation(s)
- Sean N Neifert
- Department of Neurosurgery, Mount Sinai Health System, New York, NY, 10029, USA
| | - Emily K Chapman
- Department of Neurosurgery, Mount Sinai Health System, New York, NY, 10029, USA
| | - Michael L Martini
- Department of Neurosurgery, Mount Sinai Health System, New York, NY, 10029, USA
| | - William H Shuman
- Department of Neurosurgery, Mount Sinai Health System, New York, NY, 10029, USA
| | | | - Eric K Oermann
- Department of Neurosurgery, Mount Sinai Health System, New York, NY, 10029, USA
| | - J Mocco
- Department of Neurosurgery, Mount Sinai Health System, New York, NY, 10029, USA
| | - R Loch Macdonald
- University Neurosciences Institutes, University of California San Francisco, Fresno Campus, Fresno, CA, 93701-2302, USA.
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12
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Hostettler IC, Alg VS, Shahi N, Jichi F, Bonner S, Walsh D, Bulters D, Kitchen N, Brown MM, Houlden H, Grieve J, Werring DJ. Characteristics of Unruptured Compared to Ruptured Intracranial Aneurysms: A Multicenter Case-Control Study. Neurosurgery 2019; 83:43-52. [PMID: 28973585 DOI: 10.1093/neuros/nyx365] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 06/05/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Only a minority of intracranial aneurysms rupture to cause subarachnoid hemorrhage. OBJECTIVE To test the hypothesis that unruptured aneurysms have different characteristics and risk factor profiles compared to ruptured aneurysms. METHODS We recruited patients with unruptured aneurysms or aneurysmal subarachnoid hemorrhages at 22 UK hospitals between 2011 and 2014. Demographic, clinical, and imaging data were collected using standardized case report forms. We compared risk factors using multivariable logistic regression. RESULTS A total of 2334 patients (1729 with aneurysmal subarachnoid hemorrhage, 605 with unruptured aneurysms) were included (mean age 54.22 yr). In multivariable analyses, the following variables were independently associated with rupture status: black ethnicity (odds ratio [OR] 2.42; 95% confidence interval [CI] 1.29-4.56, compared to white) and aneurysm location (anterior cerebral artery/anterior communicating artery [OR 3.21; 95% CI 2.34-4.40], posterior communicating artery [OR 3.92; 95% CI 2.67-5.74], or posterior circulation [OR 3.12; 95% CI 2.08-4.70], compared to middle cerebral artery). The following variables were inversely associated with rupture status: antihypertensive medication (OR 0.65; 95% CI 0.49-0.84), hypercholesterolemia (0.64 OR; 95% CI 0.48-0.85), aspirin use (OR 0.28; 95% CI 0.20-0.40), internal carotid artery location (OR 0.53; 95% CI 0.38-0.75), and aneurysm size (per mm increase; OR 0.76; 95% CI 0.69-0.84). CONCLUSION We show substantial differences in patient and aneurysm characteristics between ruptured and unruptured aneurysms. These findings support the hypothesis that different pathological mechanisms are involved in the formation of ruptured aneurysms and incidentally detected unruptured aneurysms. The potential protective effect of aspirin might justify randomized prevention trials in patients with unruptured aneurysms.
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Affiliation(s)
- Isabel C Hostettler
- Stroke Research Centre, University College London, Institute of Neurology, London, UK
| | - Varinder S Alg
- Stroke Research Centre, University College London, Institute of Neurology, London, UK
| | - Nichole Shahi
- Stroke Research Centre, University College London, Institute of Neurology, London, UK
| | - Fatima Jichi
- Biostatistics Group, University College London Research Support Centre, University College London, UK
| | - Stephen Bonner
- Department of Anaesthesia, The James Cook University Hospital, Middlesbrough, UK
| | - Daniel Walsh
- Department of Neurosurgery, King's College Hospital NHS Foundation Trust, London, UK
| | - Diederik Bulters
- Department of Neurosurgery, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Neil Kitchen
- Department of Neurosurgery, The National Hospital of Neurology and Neurosurgery, London, UK
| | - Martin M Brown
- Stroke Research Centre, University College London, Institute of Neurology, London, UK
| | - Henry Houlden
- Neurogenetics Laboratory, The National Hospital of Neurology and Neurosurgery, London, UK
| | - Joan Grieve
- Department of Neurosurgery, The National Hospital of Neurology and Neurosurgery, London, UK
| | - David J Werring
- Stroke Research Centre, University College London, Institute of Neurology, London, UK
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Howe C, Mishra S, Kim YS, Chen Y, Ye SH, Wagner WR, Jeong JW, Byun HS, Kim JH, Chun Y, Yeo WH. Stretchable, Implantable, Nanostructured Flow-Diverter System for Quantification of Intra-aneurysmal Hemodynamics. ACS NANO 2018; 12:8706-8716. [PMID: 30021063 DOI: 10.1021/acsnano.8b04689] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Random weakening of an intracranial blood vessel results in abnormal blood flow into an aneurysmal sac. Recent advancements show that an implantable flow diverter, integrated with a medical stent, enables a highly effective treatment of cerebral aneurysms by guiding blood flow into the normal vessel path. None of such treatment systems, however, offers post-treatment monitoring to assess the progress of sac occlusion. Therefore, physicians rely heavily on either angiography or magnetic resonance imaging. Both methods require a dedicated facility with sophisticated equipment settings and time-consuming, cumbersome procedures. In this paper, we introduce an implantable, stretchable, nanostructured flow-sensor system for quantification of intra-aneurysmal hemodynamics. The open-mesh membrane device is capable of effective implantation in complex neurovascular vessels with extreme stretchability (500% radial stretching) and bendability (180° with 0.75 mm radius of curvature) for monitoring of the treatment progress. A collection of quantitative mechanics, fluid dynamics, and experimental studies establish the fundamental aspects of design criteria for a highly compliant, implantable device. Hemocompatibility study using fresh ovine blood captures the device feasibility for long-term insertion in a blood vessel, showing less platelet deposition compared to that in existing implantable materials. In vitro demonstrations of three types of flow sensors show quantification of intra-aneurysmal blood flow in a pig aorta and the capability of observation of aneurysm treatment with a great sensitivity (detection limit as small as 0.032 m/s). Overall, this work describes a mechanically soft flow-diverter system that offers an effective treatment of aneurysms with an active monitoring of intra-aneurysmal hemodynamics.
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Affiliation(s)
- Connor Howe
- Department of Mechanical and Nuclear Engineering, Institute for Engineering and Medicine, Center for Rehabilitation Science and Engineering , Virginia Commonwealth University , Richmond , Virginia 23284 , United States
| | - Saswat Mishra
- George W. Woodruff School of Mechanical Engineering, College of Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Yun-Soung Kim
- George W. Woodruff School of Mechanical Engineering, College of Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Yanfei Chen
- Department of Industrial Engineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Sang-Ho Ye
- Department of Bioengineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - William R Wagner
- Department of Bioengineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Jae-Woong Jeong
- School of Electrical Engineering , Korea Advanced Institute of Science and Technology , Daejeon , Republic of Korea 34141
| | - Hun-Soo Byun
- Department of Chemical and Biomolecular Engineering , Chonnam National University , Yeosu , Jeonnam 59626 , South Korea
| | - Jong-Hoon Kim
- School of Engineering and Computer Science , Washington State University , Vancouver , Washington 98686 , United States
| | - Youngjae Chun
- Department of Industrial Engineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
- Department of Bioengineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Woon-Hong Yeo
- Department of Mechanical and Nuclear Engineering, Institute for Engineering and Medicine, Center for Rehabilitation Science and Engineering , Virginia Commonwealth University , Richmond , Virginia 23284 , United States
- George W. Woodruff School of Mechanical Engineering, College of Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
- Institute for Electronics and Nanotechnology, Bioengineering Interdisciplinary Program, Petit Institute for Bioengineering & Bioscience, and Center for Flexible Electronics , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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Lefferts WK, Heffernan KS. Cerebral hemodynamics and intracranial aneurysms: Reflecting on pipeline embolization devices. Interv Neuroradiol 2018; 24:631-634. [PMID: 30033786 DOI: 10.1177/1591019918788693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Wesley K Lefferts
- Department of Exercise Science, Syracuse University, Syracuse, New York, USA
| | - Kevin S Heffernan
- Department of Exercise Science, Syracuse University, Syracuse, New York, USA
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15
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Lal R, Nicoud F, Bars EL, Deverdun J, Molino F, Costalat V, Mohammadi B. Non Invasive Blood Flow Features Estimation in Cerebral Arteries from Uncertain Medical Data. Ann Biomed Eng 2017; 45:2574-2591. [DOI: 10.1007/s10439-017-1904-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 08/12/2017] [Indexed: 11/30/2022]
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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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17
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Hypertension as a risk factor for recurrent subretinal hemorrhage in polypoidal choroidal vasculopathy. Can J Ophthalmol 2016; 51:348-353. [PMID: 27769325 DOI: 10.1016/j.jcjo.2016.02.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 02/11/2016] [Accepted: 02/16/2016] [Indexed: 01/13/2023]
Abstract
OBJECTIVE To investigate the relationship between hypertension and recurrent subretinal hemorrhage (SRH) in eyes with polypoidal choroidal vasculopathy (PCV). DESIGN Retrospective, comparative case series. PARTICIPANTS Thirty-eight eyes of 38 patients with PCV. METHODS Ocular findings and clinical features were analyzed retrospectively in patients with PCV enrolled from January 2011 to December 2013. The patients were divided into 2 groups according to the presence of recurrent SRH after successful initial treatment (rebleeding vs nonrebleeding) and were subdivided into those with and without hypertension, based on history of hypertension, systolic blood pressure (SBP) >150 mm Hg. The relationship between hypertension and recurrent SRH was analyzed. RESULTS Thirty-eight patients (38 eyes) were included in this analysis. High SBP or history of hypertension was significantly more frequent in the rebleeding group than in the nonrebleeding group (p = 0.014). Subgroup analysis showed that mean time until recurrent SRH was significantly shorter in the hypertensive group than in the nonhypertensive group (p = 0.025). The cumulative incidence of recurrent SRH at 2 years was 43% in the hypertensive group and 20% in the nonhypertensive group. Cox regression after adjustment for age showed that hypertension was associated with a 3.9-fold greater risk of recurrent SRH (p = 0.039). CONCLUSIONS Recurrent SRH in patients with PCV was more common in hypertensive subjects. Undiagnosed hypertension should be considered when assessing the prognosis of patients with PCV.
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Zanaty M, Daou B, Chalouhi N, Starke RM, Jabbour P, Hasan D. Evidence That a Subset of Aneurysms Less Than 7 mm Warrant Treatment. J Am Heart Assoc 2016; 5:JAHA.116.003936. [PMID: 27509908 PMCID: PMC5015310 DOI: 10.1161/jaha.116.003936] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Mario Zanaty
- Department of Neurosurgery, University of Iowa Hospital and Clinics, Iowa City, IA
| | - Badih Daou
- Department of Neurological Surgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience, Philadelphia, PA
| | - Nohra Chalouhi
- Department of Neurological Surgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience, Philadelphia, PA
| | - Robert M Starke
- Department of Neurological Surgery and Radiology, University of Miami, FL
| | - Pascal Jabbour
- Department of Neurological Surgery, Thomas Jefferson University and Jefferson Hospital for Neuroscience, Philadelphia, PA
| | - David Hasan
- Department of Neurosurgery, University of Iowa Hospital and Clinics, Iowa City, IA
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Fan L, Lin B, Xu T, Xia N, Shao X, Tan X, Zhong M, Yang Y, Zhao B. Predicting intraprocedural rupture and thrombus formation during coiling of ruptured anterior communicating artery aneurysms. J Neurointerv Surg 2016; 9:370-375. [DOI: 10.1136/neurintsurg-2016-012335] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/06/2016] [Accepted: 03/12/2016] [Indexed: 11/03/2022]
Abstract
BackgroundIntraprocedural rupture and thrombus formation are serious complications during coiling of ruptured intracranial aneurysms, and they more often occur in patients with anterior communicating artery (ACoA) aneurysms.ObjectiveTo identify independent predictors of intraprocedural rupture and thrombus formation during coiling of ruptured ACoA aneurysms.MethodsBetween January 2008 and February 2015, 254 consecutive patients with 255 ACoA aneurysms were treated with coiling. We retrospectively reviewed intraoperative angiograms and medical records to identify intraprocedural rupture and thrombus formation, and re-measured aneurysm morphologies using CT angiography images. Multivariate logistic regression models were used to determine independent predictors of intraprocedural rupture and thrombus formation.ResultsOf the 231 patients included, intraprocedural rupture occurred in 10 (4.3%) patients, and thrombus formation occurred in 15 (6.5%) patients. Patients with smaller aneurysms more often experienced intraprocedural rupture than those with larger aneurysms (3.5±1.3 mm vs 5.7±2.3 mm). Multivariate analysis showed that smaller ruptured aneurysms (p=0.003) were independently associated with intraprocedural rupture. The threshold of aneurysm size separating rupture and non-rupture groups was 3.5 mm. Multivariate analysis showed that a history of hypertension (p=0.033), aneurysm neck size (p=0.004), and parent vessel angle (p=0.023) were independent predictors of thrombus formation. The threshold of parent vessel angle separating thrombus and non-thrombus groups was 60.0°.ConclusionsRuptured aneurysms <3.5 mm were associated with an increased risk of intraprocedural rupture, and parent vessel angle <60.0°, wider-neck aneurysms, and a history of hypertension were associated with increased risk of thrombus formation during coiling of ruptured ACoA aneurysms.
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Xia N, Liu Y, Zhong M, Zhuge Q, Fan L, Chen W, Yang Y, Zhao B. Smoking Associated with Increased Aneurysm Size in Patients with Anterior Communicating Artery Aneurysms. World Neurosurg 2016; 87:155-61. [DOI: 10.1016/j.wneu.2015.11.094] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 11/24/2015] [Accepted: 11/26/2015] [Indexed: 11/16/2022]
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