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Wiśniewski K, Zaczkowski K, Szmyd BM, Popęda M, Bieńkowski M, Posmyk B, Bobeff EJ, Jaskólski DJ. Evaluation of CSF 8-iso-prostaglandin F2α and erythrocyte anisocytosis as prognostic biomarkers for delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage. Sci Rep 2024; 14:11302. [PMID: 38760404 PMCID: PMC11101481 DOI: 10.1038/s41598-024-61956-w] [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: 01/26/2024] [Accepted: 05/12/2024] [Indexed: 05/19/2024] Open
Abstract
Delayed cerebral ischemia (DCI) is a serious, life-threatening, complication affecting patients who have survived the initial bleeding from a ruptured intracranial aneurysm. Due to the challenging diagnosis, potential DCI prognostic markers should be of value in clinical practice. According to recent reports isoprostanes and red blood cell distribution (RDW) showed to be promising in this respect. We conducted a prospective study of 27 aSAH patients and control group (n = 8). All patients from the study group were treated within the first day of the initial bleeding. We collected data regarding clinical status and results of biochemical, and radiological examinations. We measured cerebrospinal fluid (CSF) concentration of 8-iso-prostaglandin F2α (F2-IsoP) and RDW on days 1, 3, and 5. Both CSF F2-IsoP level and RDW-SD measured on day 1 were significant predictors of DCI. The receiver operating characteristics curve for DCI prediction based on the multivariate model yielded an area under the curve of 0.924 (95% CI 0.824-1.000, p < 0.001). In our study, the model based on the combination of RDW and the level of isoprostanes in CSF on the first day after the initial bleeding showed a prognostic value for DCI prediction. Further studies are required to validate this observation.
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Affiliation(s)
- Karol Wiśniewski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Kopcińskiego 22, 90-153, Łódź, Poland.
| | - Karol Zaczkowski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Kopcińskiego 22, 90-153, Łódź, Poland
| | - Bartosz M Szmyd
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Kopcińskiego 22, 90-153, Łódź, Poland
| | - Marta Popęda
- Department of Pathomorphology, Medical University of Gdańsk, Gdańsk, Poland
| | - Michał Bieńkowski
- Department of Pathomorphology, Medical University of Gdańsk, Gdańsk, Poland
| | - Bartłomiej Posmyk
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Kopcińskiego 22, 90-153, Łódź, Poland
| | - Ernest J Bobeff
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Kopcińskiego 22, 90-153, Łódź, Poland
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Łódź, Łódź, Poland
| | - Dariusz J Jaskólski
- Department of Neurosurgery and Neurooncology, Medical University of Łódź, Kopcińskiego 22, 90-153, Łódź, Poland
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Thilak S, Brown P, Whitehouse T, Gautam N, Lawrence E, Ahmed Z, Veenith T. Diagnosis and management of subarachnoid haemorrhage. Nat Commun 2024; 15:1850. [PMID: 38424037 PMCID: PMC10904840 DOI: 10.1038/s41467-024-46015-2] [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: 06/22/2023] [Accepted: 02/12/2024] [Indexed: 03/02/2024] Open
Abstract
Aneurysmal subarachnoid haemorrhage (aSAH) presents a challenge to clinicians because of its multisystem effects. Advancements in computed tomography (CT), endovascular treatments, and neurocritical care have contributed to declining mortality rates. The critical care of aSAH prioritises cerebral perfusion, early aneurysm securement, and the prevention of secondary brain injury and systemic complications. Early interventions to mitigate cardiopulmonary complications, dyselectrolytemia and treatment of culprit aneurysm require a multidisciplinary approach. Standardised neurological assessments, transcranial doppler (TCD), and advanced imaging, along with hypertensive and invasive therapies, are vital in reducing delayed cerebral ischemia and poor outcomes. Health care disparities, particularly in the resource allocation for SAH treatment, affect outcomes significantly, with telemedicine and novel technologies proposed to address this health inequalities. This article underscores the necessity for comprehensive multidisciplinary care and the urgent need for large-scale studies to validate standardised treatment protocols for improved SAH outcomes.
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Affiliation(s)
- Suneesh Thilak
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2GW, UK
| | - Poppy Brown
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2GW, UK
| | - Tony Whitehouse
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2GW, UK
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK
| | - Nandan Gautam
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2GW, UK
| | - Errin Lawrence
- University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, B15 2GW, UK
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK
| | - Zubair Ahmed
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK
- Centre for Trauma Sciences Research, University of Birmingham, Birmingham, B15 2TT, UK
| | - Tonny Veenith
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK.
- Centre for Trauma Sciences Research, University of Birmingham, Birmingham, B15 2TT, UK.
- Department of Critical Care Medicine and Anaesthesia, The Royal Wolverhampton NHS Foundation Trust, New Cross Hospital, Wolverhampton, WV10 0QP, UK.
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Varol E. The Role of Computed Tomographic Angiography in Predicting the Development of Vasospasm Following Ruptured Intracranial Aneurysm Microsurgery. Cureus 2023; 15:e45386. [PMID: 37724099 PMCID: PMC10505260 DOI: 10.7759/cureus.45386] [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] [Accepted: 09/16/2023] [Indexed: 09/20/2023] Open
Abstract
Introduction Following subarachnoid hemorrhage, cerebral vasospasm is the primary cause of morbidity and death. The aim of this study is to predict the development of vasospasm by detecting changes in vessel diameter after surgery using computed tomography angiography. Methods We retrospectively evaluated the patients who underwent aneurysm clipping due to a bleeding aneurysm between 2019-2022. Age, gender, location, subarachnoid hemorrhage grades, development of perioperative rupture, and temporary clip use were examined. Preoperative and postoperative diameters of the internal carotid artery, A1-A2, and M1-M2 were measured. Radiological and clinical vasospasm development in the postoperative period was also documented. Results The aneurysm localizations of the 100 patients (mean age: 50.38±13.04 years) were anterior cerebral artery in 50 patients, internal carotid artery in 37 patients, and middle cerebral artery in 30 patients. In the postoperative follow-up, radiological vasospasm was apparent in 41 patients. The changes in arterial diameter reveal a statistically significant decrease in the internal carotid artery, M1-M2, and A1-A2 artery diameters on the operated side compared to the contralateral side (p<0.001). Based on the receiver operating characteristic (ROC) analysis, the most likely change in arterial diameter on the operated side to indicate the presence of vasospasm was calculated from the available data, where the decrease in total arterial diameter was 13.7%. Conclusion Vasospasm remains one of the significant causes of morbidity and mortality post subarachnoid hemorrhage. While there have been advances in imaging modalities, predicting which patients will develop vasospasm has remained elusive. Our research attempts to provide a quantifiable metric (13.7% decrease in vessel diameter) that can be an early predictor of this complication.
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Affiliation(s)
- Eyüp Varol
- Neurological Surgery, Umraniye Training and Research Hospital, Istanbul, TUR
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Street JS, Pandit AS, Toma AK. Predicting vasospasm risk using first presentation aneurysmal subarachnoid hemorrhage volume: A semi-automated CT image segmentation analysis using ITK-SNAP. PLoS One 2023; 18:e0286485. [PMID: 37262041 DOI: 10.1371/journal.pone.0286485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 05/17/2023] [Indexed: 06/03/2023] Open
Abstract
PURPOSE Cerebral vasospasm following aneurysmal subarachnoid hemorrhage (aSAH) is a significant complication associated with poor neurological outcomes. We present a novel, semi-automated pipeline, implemented in the open-source medical imaging analysis software ITK-SNAP, to segment subarachnoid blood volume from initial CT head (CTH) scans and use this to predict future radiological vasospasm. METHODS 42 patients were admitted between February 2020 and December 2021 to our tertiary neurosciences center, and whose initial referral CTH scan was used for this retrospective cohort study. Blood load was segmented using a semi-automated random forest classifier and active contour evolution implemented in ITK-SNAP. Clinical data were extracted from electronic healthcare records in order to fit models aimed at predicting radiological vasospasm risk. RESULTS Semi-automated segmentations demonstrated excellent agreement with manual, expert-derived volumes (mean Dice coefficient = 0.92). Total normalized blood volume, extracted from CTH images at first presentation, was significantly associated with greater odds of later radiological vasospasm, increasing by approximately 7% for each additional cm3 of blood (OR = 1.069, 95% CI: 1.021-1.120; p < .005). Greater blood volume was also significantly associated with vasospasm of a higher Lindegaard ratio, of longer duration, and a greater number of discrete episodes. Total blood volume predicted radiological vasospasm with a greater accuracy as compared to the modified Fisher scale (AUC = 0.86 vs 0.70), and was of independent predictive value. CONCLUSION Semi-automated methods provide a plausible pipeline for the segmentation of blood from CT head images in aSAH, and total blood volume is a robust, extendable predictor of radiological vasospasm, outperforming the modified Fisher scale. Greater subarachnoid blood volume significantly increases the odds of subsequent vasospasm, its time course and its severity.
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Affiliation(s)
- James S Street
- Department of Clinical and Experimental Epilepsy, Institute of Neurology, University College London, London, United Kingdom
| | - Anand S Pandit
- Victor Horsley Department of Neurosurgery, The National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom
- High-Dimensional Neurology, Institute of Neurology, University College London, London, United Kingdom
| | - Ahmed K Toma
- Victor Horsley Department of Neurosurgery, The National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom
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Kim M, Jeon H, Chung Y, Lee SU, Park W, Park JC, Ahn JS, Lee S. Efficacy of Acetylcysteine and Selenium in Aneurysmal Subarachnoid Hemorrhage Patients: A Prospective, Multicenter, Single Blind Randomized Controlled Trial. J Korean Med Sci 2023; 38:e161. [PMID: 37270916 DOI: 10.3346/jkms.2023.38.e161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/16/2023] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND Subarachnoid hemorrhage (SAH) patients have oxidative stress results in inflammation, tissue degeneration and neuronal damage. These deleterious effects cause aggravation of the perihematomal edema (PHE), vasospasm, and even hydrocephalus. We hypothesized that antioxidants may have a neuroprotective role in acute aneurysmal SAH (aSAH) patients. METHODS We conducted a prospective, multicenter randomized (single blind) trial between January 2017 and October 2019, investigating whether antioxidants (acetylcysteine and selenium) have the potential to improve the neurologic outcome in aSAH patients. The antioxidant patient group received antioxidants of acetylcysteine (2,000 mg/day) and selenium (1,600 µg/day) intravenously (IV) for 14 days. These drugs were administrated within 24 hours of admission. The non-antioxidant patient group received a placebo IV. RESULTS In total, 293 patients were enrolled with 103 patients remaining after applying the inclusion and exclusion criteria. No significant differences were observed in the baseline characteristics between the antioxidant (n = 53) and non-antioxidant (n = 50) groups. Among clinical factors, the duration of intensive care unit (ICU) stay was significantly shortened in patients who received antioxidants (11.2, 95% confidence interval [CI], 9.7-14.5 vs. 8.3, 95% CI, 6.2-10.2 days, P = 0.008). However, no beneficial effects were observed on radiological outcomes. CONCLUSION In conclusion, antioxidant treatment failed to show the reduction of PHE volume, mid-line shifting, vasospasm and hydrocephalus in acute SAH patients. A significant reduction in ICU stay was observed but need more optimal dosing schedule and precise outcome targets are required to clarify the clinical impacts of antioxidants in these patients. TRIAL REGISTRATION Clinical Research Information Service Identifier: KCT0004628.
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Affiliation(s)
- Moinay Kim
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hanwool Jeon
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Yeongu Chung
- Department of Neurosurgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Si Un Lee
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Wonhyoung Park
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jung Cheol Park
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Sung Ahn
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seungjoo Lee
- Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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Bergin B, Ragulojan M, Trivedi A, Kesserwan M, Farrokhyar F, Sharma S. Computed Tomography Angiography Compared with Computed Tomography Perfusion in the Diagnosis of Cerebral Vasospasm: A Systematic Review and Meta-Analysis. World Neurosurg 2023; 170:e340-e350. [PMID: 36368456 DOI: 10.1016/j.wneu.2022.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 11/10/2022]
Abstract
INTRODUCTION Cerebral vasospasm (CV) is a serious complication after subarachnoid hemorrhage; however, swift identification can be challenging. Computed tomography perfusion (CTP) directly measures tissue perfusion and may better screen for CV compared with other modalities. This systematic review summarizes studies assessing the diagnostic performance of computed tomography angiography (CTA) and CTP in identifying CV. METHODS The search strategy drew from English language publications in the PubMed, Embase, Medline, and Cochrane databases from January 1996 to September 2021. Diagnosis of CV by digital subtraction angiography was the reference standard. Pooled sensitivity, specificity, positive predictive values (PPV), negative predictive values (NPV), positive likelihood ratios, negative likelihood ratios, and summary receiver operating characteristic curve were calculated. The methodological index for nonrandomized studies tool was employed to assess the quality of the studies. RESULTS The search generated 22 studies. Seven CTA studies and 6 CTP investigations provided sufficient data for meta-analysis. Following pooled estimates, CTA carried a sensitivity of 0.76 (95% confidence interval [CI], 0.72-0.80), specificity of 0.93 (95% CI, 0.92-0.95), PPV of 0.77 (95%, 0.76-0.79), and NPV of 0.81 (95%, 0.79-0.82). CTP carried a sensitivity of 0.86 (95%, 0.81-0.92), specificity of 0.97 (95%, 0.95-0.98), PPV of 0.94 (0.89-0.98), and NPV of 0.94 (0.91-0.97). Using the methodological index for nonrandomized studies tool, the evidence was rated as overall moderate quality. CONCLUSIONS This meta-analysis on the diagnostic performance of CTA and CTP in identifying CV suggests that CTP may carry greater diagnostic accuracy compared with CTA. The clinical significance of this difference should be delineated through future prospective studies.
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Affiliation(s)
- Brad Bergin
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; CRANI Group, McMaster University, Hamilton, Ontario, Canada
| | - Malavan Ragulojan
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; CRANI Group, McMaster University, Hamilton, Ontario, Canada.
| | - Arunachala Trivedi
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; CRANI Group, McMaster University, Hamilton, Ontario, Canada
| | - Mohamad Kesserwan
- CRANI Group, McMaster University, Hamilton, Ontario, Canada; Division of Neurosurgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Forough Farrokhyar
- CRANI Group, McMaster University, Hamilton, Ontario, Canada; Division of Neurosurgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Sunjay Sharma
- CRANI Group, McMaster University, Hamilton, Ontario, Canada; Division of Neurosurgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Bautista M, Burger R, Anderson IA, Mathew RK. ASPECT Score and Its Application to Vasospasm in Aneurysmal Subarachnoid Haemorrhage: a Case-Control Study. Transl Stroke Res 2023; 14:94-99. [PMID: 35943718 PMCID: PMC9873732 DOI: 10.1007/s12975-022-01073-w] [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: 01/20/2022] [Revised: 07/13/2022] [Accepted: 07/26/2022] [Indexed: 01/31/2023]
Abstract
Delayed cerebral ischaemia (DCI) is a significant complication of aneurysmal subarachnoid haemorrhage (aSAH) and is strongly associated with poorer outcome. The Alberta Stroke Program Early Computer Tomography (ASPECT) score is an established scoring tool, used in acute ischaemic stroke, to quantify early ischaemic changes on CT head scans. We aim to identify if ASPECT scoring correlates with functional outcome in DCI following aSAH. Retrospective case-control study. Inclusion criteria: admission to the Department of Neurosurgery at Leeds Teaching Hospitals NHS Trust (a tertiary neurosurgical centre in the United Kingdom) between 2014 and 2018, with a diagnosis of anterior circulation aneurysmal subarachnoid haemorrhage; as confirmed by initial CT scan and subsequent CT angiography or catheter digital subtraction angiography. Cases were those who developed DCI (n = 43) and controls were randomly selected from those who did not develop DCI (n = 46) but otherwise met the same inclusion criteria. The primary outcome measure was Glasgow Outcome Score (GOS): assessed at discharge and 3 months. ASPECT scores were calculated from non-contrast CT head scans by three researchers blinded to each other and clinical outcome. Spearman's rank correlation was used to calculate correlation between ASPECT scores and GOS. ASPECT score positively correlated with GOS in the cases both at discharge (Spearman rho 0.436, p = 0.003) and at 3 months (Spearman rho 0.431, p = 0.004). When corrected for Fisher grading, the adjusted odds ratio of having a high GOS with a low ASPECT score at discharge was OR 0.74 (95% CI 0.61-0.94, p = 0.003), and 3 months OR 0.73 (95% CI 0.59-0.91, p = 0.005). ASPECT score significantly correlates with clinical outcome in DCI post aSAH, even after correcting for Fisher grade. ASPECT scoring may identify patients at risk of poor outcome following DCI and represents a quick and reliable tool that aids in clinical decision-making and prognostication.
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Affiliation(s)
- Melissa Bautista
- Department of Neurosurgery, Leeds Centre for Neurosciences, Leeds Teaching Hospitals NHS Trust, G Floor, Leeds General Infirmary, Jubilee Wing Great George Street, Leeds, LS1 3EX UK
| | - Rebecca Burger
- Department of Neurosurgery, Leeds Centre for Neurosciences, Leeds Teaching Hospitals NHS Trust, G Floor, Leeds General Infirmary, Jubilee Wing Great George Street, Leeds, LS1 3EX UK
| | - Ian A. Anderson
- Department of Neurosurgery, Leeds Centre for Neurosciences, Leeds Teaching Hospitals NHS Trust, G Floor, Leeds General Infirmary, Jubilee Wing Great George Street, Leeds, LS1 3EX UK ,School of Medicine, Clinical Sciences Building, Leeds Institute of Medical Research at St James’s, University of Leeds, Room 7.6, Leeds, LS9 7TF UK
| | - Ryan K. Mathew
- Department of Neurosurgery, Leeds Centre for Neurosciences, Leeds Teaching Hospitals NHS Trust, G Floor, Leeds General Infirmary, Jubilee Wing Great George Street, Leeds, LS1 3EX UK ,School of Medicine, Clinical Sciences Building, Leeds Institute of Medical Research at St James’s, University of Leeds, Room 7.6, Leeds, LS9 7TF UK
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Accuracy of Brain Computed Tomography Diagnosis by Emergency Medicine Physicians. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:5659129. [PMID: 36199970 PMCID: PMC9529454 DOI: 10.1155/2022/5659129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 12/02/2022]
Abstract
Objectives The objective of this study is to prospectively analyze emergency physicians' (EP's) abilities to interpret noncontrast computed tomography (NCCT) brain images in a blinded fashion and assess whether they can make medical decisions solely based on their interpretations. Methods A cross-sectional study was conducted at the emergency department (ED), King Saud University Medical City (KSU-MC), Saudi Arabia, over a period of one year, from May 2014 to May 2015. Any patient who underwent plain brain NCCT during the study period in our ED was included in this study. An independent attending neuroradiologist compared the EP's interpretations with the official final reports dictated by an on-call radiologist. Results A brain NCCT prospective chart audit of 1,524 patients was interpreted by ED physicians (EP) at KSU-MC from 2014–2015. The ages of patients were between 14 and 107 years, and the mean ± SD age was 45.6 ± 22.1 years. Radiological brain lesions were confirmed by EPs and radiology physicians in 230 (15.09) and 239 (15.68) patients, respectively, out of which concordance was observed in 170 (71.13) cases, with a kappa value of r = 0.675. Normal, chronic, and nil acute reports were made by EPs and radiology physicians for 1,295 (84.97) patients and 1,285 (84.32) patients, respectively, out of which concordance was observed in 1,225 (95.33) cases, with a kappa value of r = 0.672. The study results demonstrated that the overall agreement between EPs and radiologist specialists was 91.6, with a kappa value of .675 (p < 0.001). Conclusion Emergency physicians are moderately accurate at interpreting brain NCCT compared to radiologists. More research is needed to discover the most cost-effective technique for reducing the number of significant misinterpretations.
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Díaz-García E, Nanwani-Nanwani K, García-Tovar S, Alfaro E, López-Collazo E, Quintana-Díaz M, García-Rio F, Cubillos-Zapata C. NLRP3 Inflammasome Overactivation in Patients with Aneurysmal Subarachnoid Hemorrhage. Transl Stroke Res 2022; 14:334-346. [PMID: 35819747 PMCID: PMC10160181 DOI: 10.1007/s12975-022-01064-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/27/2022] [Accepted: 07/06/2022] [Indexed: 10/17/2022]
Abstract
Aneurysmal subarachnoid hemorrhage (aSAH) is an uncommon and severe subtype of stroke leading to the loss of many years of productive life. We analyzed NLRP3 activity as well as key components of the inflammasome cascade in monocytes and plasma from 28 patients with aSAH and 14 normal controls using flow cytometry, western blot, ELISA, and qPCR technologies. Our data reveal that monocytes from patients with aSAH present an overactivation of the NLRP3 inflammasome, which results in the presence of high plasma levels of interleukin (IL)-1β, IL-18, gasdermin D, and tissue factor. Although further research is needed, we propose that serum tissue factor concentration might be a useful prognosis biomarker for clinical outcome, and for Tako-Tsubo cardiomyopathy and cerebral vasospasm prediction. Remarkably, MCC-950 inhibitor effectively blocks NLRP3 activation in aSAH monocyte culture and supresses tissue factor release to the extracellular space. Finally, our findings suggest that NLRP3 activation could be due to the release of erythrocyte breakdown products to the subarachnoid space during aSAH event. These data define NLRP3 activation in monocytes from aSAH patients, indicating systemic inflammation that results in serum TF upregulation which in turns correlates with aSAH severity and might serve as a prognosis biomarker for aSAH clinical outcome and for cerebral vasospasm and Tako-Tsubo cardiomyopathy prediction.
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Affiliation(s)
- Elena Díaz-García
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain. .,Biomedical Research Networking Center On Respiratory Diseases (CIBERES), Madrid, Spain.
| | | | - Sara García-Tovar
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Enrique Alfaro
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain
| | | | - Manuel Quintana-Díaz
- Department of Intensive Care Medicine, La Paz University Hospital, Madrid, Spain.,Faculty of Medicine, Autonomous University of Madrid, Madrid, Spain
| | - Francisco García-Rio
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain.,Biomedical Research Networking Center On Respiratory Diseases (CIBERES), Madrid, Spain.,Faculty of Medicine, Autonomous University of Madrid, Madrid, Spain
| | - Carolina Cubillos-Zapata
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain. .,Biomedical Research Networking Center On Respiratory Diseases (CIBERES), Madrid, Spain.
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Silva MA, Chen S, Starke RM. Unruptured cerebral aneurysm risk stratification: Background, current research, and future directions in aneurysm assessment. Surg Neurol Int 2022; 13:182. [PMID: 35509527 PMCID: PMC9062958 DOI: 10.25259/sni_1112_2021] [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: 11/05/2021] [Accepted: 04/07/2022] [Indexed: 12/04/2022] Open
Abstract
Background: The optimal management of unruptured cerebral aneurysms is widely debated in the medical field. Rapid technology advances, evolving understanding of underlying pathophysiology, and shifting practice patterns have made the cerebrovascular field particularly dynamic in recent years. Despite progress, there remains a dearth of large randomized studies to help guide the management of these controversial patients. Methods: We review the existing literature on the natural history of unruptured cerebral aneurysms and highlight ongoing research aimed at improving our ability to stratify risk in these patients. Results: Landmark natural history studies demonstrated the significance of size, location, and other risk factors for aneurysm rupture, but prior studies have significant limitations. We have begun to understand the underlying pathophysiology behind aneurysm formation and rupture and are now applying new tools such as flow dynamics simulations and machine learning to individualize rupture risk stratification. Conclusion: Prior studies have identified several key risk factors for aneurysmal rupture, but have limitations. New technology and research methods have enabled us to better understanding individual rupture risk for patients with unruptured cerebral aneurysms.
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Scherschinski L, Catapano JS, Karahalios K, Koester SW, Benner D, Winkler EA, Graffeo CS, Srinivasan VM, Jha RM, Jadhav AP, Ducruet AF, Albuquerque FC, Lawton MT. Electroencephalography for detection of vasospasm and delayed cerebral ischemia in aneurysmal subarachnoid hemorrhage: a retrospective analysis and systematic review. Neurosurg Focus 2022; 52:E3. [DOI: 10.3171/2021.12.focus21656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/22/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
Good functional outcomes after aneurysmal subarachnoid hemorrhage (aSAH) are often dependent on early detection and treatment of cerebral vasospasm (CVS) and delayed cerebral ischemia (DCI). There is growing evidence that continuous monitoring with cranial electroencephalography (cEEG) can predict CVS and DCI. Therefore, the authors sought to assess the value of continuous cEEG monitoring for the detection of CVS and DCI in aSAH.
METHODS
The cerebrovascular database of a quaternary center was reviewed for patients with aSAH and cEEG monitoring between January 1, 2017, and July 31, 2019. Demographic data, cardiovascular risk factors, Glasgow Coma Scale score at admission, aneurysm characteristics, and outcomes were abstracted from the medical record. Patient data were retrospectively analyzed for DCI and angiographically assessed CVS. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and odds ratio for cEEG, transcranial Doppler ultrasonography (TCDS), CTA, and DSA in detecting DCI and angiographic CVS were calculated. A systematic literature review was conducted in accordance with PRISMA guidelines querying the PubMed, Cochrane Controlled Trials Register, Web of Science, and Embase databases.
RESULTS
A total of 77 patients (mean age 60 years [SD 15 years]; female sex, n = 54) were included in the study. Continuous cEEG monitoring detected DCI and angiographically assessed CVS with specificities of 82.9% (95% CI 66.4%–93.4%) and 94.4% (95% CI 72.7%–99.9%), respectively. The sensitivities were 11.1% (95% CI 3.1%–26.1%) for DCI (n = 71) and 18.8% (95% CI 7.2%–36.4%) for angiographically assessed CVS (n = 50). Furthermore, TCDS detected angiographically determined CVS with a sensitivity of 87.5% (95% CI 71.0%–96.5%) and specificity of 25.0% (95% CI 7.3%–52.4%). In patients with DCI, TCDS detected vasospasm with a sensitivity of 85.7% (95% CI 69.7%–95.2%) and a specificity of 18.8% (95% CI 7.2%–36.4%). DSA detected vasospasm with a sensitivity of 73.9% (95% CI 51.6%–89.8%) and a specificity of 47.8% (95% CI 26.8%–69.4%).
CONCLUSIONS
The study results suggest that continuous cEEG monitoring is highly specific in detecting DCI as well as angiographically assessed CVS. More prospective studies with predetermined thresholds and endpoints are needed to assess the predictive role of cEEG in aSAH.
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Affiliation(s)
- Lea Scherschinski
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Joshua S. Catapano
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Katherine Karahalios
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Stefan W. Koester
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Dimitri Benner
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Ethan A. Winkler
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Christopher S. Graffeo
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Visish M. Srinivasan
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Ruchira M. Jha
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Ashutosh P. Jadhav
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Andrew F. Ducruet
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Felipe C. Albuquerque
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
| | - Michael T. Lawton
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph’s Hospital and Medical Center, Phoenix, Arizona
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Price RD, Bhurwani MMS, Sommer KN, Monteiro A, Baig AA, Davies JM, Siddiqui AH, Ionita CN. Initial investigation of the use of angiographic parametric imaging for early prognosis of delayed cerebral ischemia in patients with subarachnoid hemorrhage. PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2022; 12036:120361Q. [PMID: 35983497 PMCID: PMC9385186 DOI: 10.1117/12.2612081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
PURPOSE Subarachnoid Hemorrhage (SAH) is a lethal hemorrhagic stroke that account for 25% of cerebrovascular deaths. As a result of the initial bleed, a chain of physiological events are initiated which may lead to Delayed Cerebral Ischemia (DCI). As of now we have no diagnostic capability to identify patients which may present DCI a few weeks after initial presentation. We propose to investigate whether a data driven approach using angiographic parametric imaging (API) may predict occurrence of the DCI. MATERIALS AND METHODS Digital Subtraction Angiographic (DSA) sequences from 125 SAH patients were used retrospectively to perform API assessment of the entire brain hemisphere where the hemorrhage was detected. Four Regions of Interests (ROIs) were placed to extract five average API biomarkers in the lateral and AP DSAs. Data driven analysis using Logistic Regression was performed for various API parameters and ROIs to find the optimal configuration to maximize the prognosis accuracy. Each model performance was evaluated using area under the curve of the receiver operator characteristic (AUROC). RESULTS Data driven approach with API has a 60% accuracy predicting DCI occurrence. We determined that location of the ROI for extraction of the API parameters is very important for the data driven model performance. Normalizing the values using the inlet velocities for each patient yield higher and more consistent results. Single API biomarkers models had poor prediction accuracies, barely better than chance. CONCLUSIONS This effectiveness exploratory study demonstrates for the first time, that prognosis of the DCI in SAH patients, is feasible and warrants a more in-depth investigation.
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Affiliation(s)
- Roman D Price
- Department of Biomedical Engineering, University at Buffalo, Buffalo NY 14228
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
| | - Mohammad Mahdi Shiraz Bhurwani
- Department of Biomedical Engineering, University at Buffalo, Buffalo NY 14228
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
| | - Kelsey N Sommer
- Department of Biomedical Engineering, University at Buffalo, Buffalo NY 14228
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
- QAS.AI Incorporated, Buffalo NY 14203
| | - Andrei Monteiro
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
- University at Buffalo Neurosurgery, University at Buffalo Jacobs School of Medicine, Buffalo NY 14228
| | - Ammad A Baig
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
- University at Buffalo Neurosurgery, University at Buffalo Jacobs School of Medicine, Buffalo NY 14228
| | - Jason M Davies
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
- University at Buffalo Neurosurgery, University at Buffalo Jacobs School of Medicine, Buffalo NY 14228
- QAS.AI Incorporated, Buffalo NY 14203
- University Dept. of Biomedical Informatics, University at Buffalo, Buffalo, NY 14214
| | - Adnan H Siddiqui
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
- University at Buffalo Neurosurgery, University at Buffalo Jacobs School of Medicine, Buffalo NY 14228
- University Dept. of Biomedical Informatics, University at Buffalo, Buffalo, NY 14214
| | - Ciprian N Ionita
- Department of Biomedical Engineering, University at Buffalo, Buffalo NY 14228
- Canon Stroke and Vascular Research Center, Buffalo, NY 14203
- University at Buffalo Neurosurgery, University at Buffalo Jacobs School of Medicine, Buffalo NY 14228
- QAS.AI Incorporated, Buffalo NY 14203
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Sharma AK, Singh D, Mahajan B, Tandon M, Singh H. Prospective Analysis of Role of hsTnT and NT-proBNP in Prediction of Neurogenic Stress Cardiomyopathy in Patients with Aneurysmal Subarachnoid Haemorrhage. Neurol India 2021; 69:944-949. [PMID: 34507417 DOI: 10.4103/0028-3886.323891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Neurogenic stress cardiomyopathy (NSC), also known as stress-induced cardiomyopathy (SIC), is a significant complication of aneurysmal subarachnoid hemorrhage and an important contributor to morbidity mortality. Objective This prospective observational study assessed whether the high sensitive troponin T (hsTnT) and N-terminal pro-B-type natriuretic peptide (NTproBNP) helps in the prediction of NSC after SAH. Methods The consecutive patients with aSAH without any cardiac history were included prospectively over 12 months. Neurological assessment for the grade of SAH (Hunt & Hess and WFNS grade), electrocardiogram, and echocardiography done at admission. The serial measurements of serum hsTnT and NTproBNP for consecutive 7 days done. The NSC is defined as transient hypokinesia of the ventricular wall on echocardiography. Results The study included 69 patients, and 7 (10.1%) were diagnosed with NSC. The NSC had a positive correlation with Hunt and Hess grade (P = 0.010), and the serum levels of hsTnT and NTproBNP were higher in patients with NSC in comparison to without NSC over all 7 days. The peak levels of hsTnT and NTproBNP were significantly higher in patients with cardiomyopathy (P = 0.000 and 0.032, respectively). The best cut-off level of peak hsTnT was 0.032 pg/dl to predict cardiomyopathy with sensitivity and specificity of 100% and 80%, respectively, and NTproBNP was 430.6 ng/dL with sensitivity and specificity of 86% and 73%, respectively. Conclusion The peak levels of hsTnT and NTproBNP with abnormal ECG and echocardiography at admission help identify NSC in the early phase of aSAH.
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Affiliation(s)
- Amit K Sharma
- Department of Neurosurgery, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Daljit Singh
- Department of Neurosurgery, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Bhawna Mahajan
- Department of Neurosurgery, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Monica Tandon
- Department of Neurosurgery, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
| | - Hukum Singh
- Department of Neurosurgery, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research (GIPMER), New Delhi, India
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Aneurysmal and arteriovenous malformation hemorrhage during pregnancy: An update on the epidemiology, risk factors and prognosis. Clin Neurol Neurosurg 2021; 208:106897. [PMID: 34455403 DOI: 10.1016/j.clineuro.2021.106897] [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: 01/20/2021] [Revised: 08/04/2021] [Accepted: 08/12/2021] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Intracranial hemorrhage (ICH) is a devastating condition with a high rate of morbidity and mortality. Aneurysm or arteriovenous malformation (AVM) rupture are two common etiologies leading to ICH. Here we provide an update on ICH during pregnancy with a focus on those caused by aneurysm or AVM rupture. METHODS Here we systematically review 25 studies reported in the literature to provide an update on ICH during pregnancy focusing on aneurysm or AVM rupture. We also reviewed the prognosis of ICH during puerperium. RESULTS Discrepancies exist between studies supporting or refuting the hypothesis of a higher rate of ICH during pregnancy, obscuring the overall rate of aneurysm and AVM rupture in pregnant ICH patients. However, risk factors such as maternal age and hypertension have shown to increase the frequency of ICH in pregnant patients. We also show increased morbidity and mortality in patients suffering from preeclampsia/eclampsia. DISCUSSION ICH is rare, but the various studies demonstrating its increased frequency, morbidity, and mortality during pregnancy should raise our awareness of this condition. The management and treatment decisions for a pregnant ICH patient should follow the same principles as nonpregnant patients, but with the knowledge that not all medications are appropriate for use in the pregnant patient. Although there seems to be a higher frequency of AVM rupture, further research must be conducted in order to fully determine the effects of pregnancy on aneurysm and AVM ruptures.
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Aneurysmal Subarachnoid Hemorrhage: Review of the Pathophysiology and Management Strategies. Curr Neurol Neurosci Rep 2021; 21:50. [PMID: 34308493 DOI: 10.1007/s11910-021-01136-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2021] [Indexed: 12/19/2022]
Abstract
PURPOSE OF REVIEW Aneurysmal subarachnoid hemorrhage remains a devastating disease process despite medical advances made over the past 3 decades. Much of the focus was on prevention and treatment of vasospasm to reduce delayed cerebral ischemia and improve outcome. In recent years, there has been a shift of focus onto early brain injury as the precursor to delayed cerebral ischemia. This review will focus on the most recent data surrounding the pathophysiology of aneurysmal subarachnoid hemorrhage and current management strategies. RECENT FINDINGS There is a paucity of successful trials in the management of subarachnoid hemorrhage likely related to the targeting of vasospasm. Pathophysiological changes occurring at the time of aneurysmal rupture lead to early brain injury including cerebral edema, inflammation, and spreading depolarization. These events result in microvascular collapse, vasospasm, and ultimately delayed cerebral ischemia. Management of aneurysmal subarachnoid hemorrhage has remained the same over the past few decades. No recent trials have resulted in new treatments. However, our understanding of the pathophysiology is rapidly expanding and will advise future therapeutic targets.
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Gouvêa Bogossian E, Diaferia D, Minini A, Ndieugnou Djangang N, Menozzi M, Peluso L, Annoni F, Creteur J, Schuind S, Dewitte O, Taccone FS. Time course of outcome in poor grade subarachnoid hemorrhage patients: a longitudinal retrospective study. BMC Neurol 2021; 21:196. [PMID: 33985460 PMCID: PMC8117582 DOI: 10.1186/s12883-021-02229-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/06/2021] [Indexed: 12/17/2022] Open
Abstract
Background Neurological outcome and mortality of patients suffering from poor grade subarachnoid hemorrhage (SAH) may have changed over time. Several factors, including patients’ characteristics, the presence of hydrocephalus and intraparenchymal hematoma, might also contribute to this effect. The aim of this study was to assess the temporal changes in mortality and neurologic outcome in SAH patients and identify their predictors. Methods We performed a single center retrospective cohort study from 2004 to 2018. All non-traumatic SAH patients with poor grade on admission (WFNS score of 4 or 5) who remained at least 24 h in the hospital were included. Time course was analyzed into four groups according to the years of admission (2004–2007; 2008–2011; 2012–2015 and 2016–2018). Results A total of 353 patients were included in this study: 202 patients died (57 %) and 260 (74 %) had unfavorable neurological outcome (UO) at 3 months. Mortality tended to decrease in in 2008–2011 and 2016–2018 periods (HR 0.55 [0.34–0.89] and HR 0.33 [0.20–0.53], respectively, when compared to 2004–2007). The proportion of patients with UO remained high and did not vary significantly over time. Patients with WFNS 5 had higher mortality (68 % vs. 34 %, p = 0.001) and more frequent UO (83 % vs. 54 %, p = 0.001) than those with WFNS 4. In the multivariable analysis, WFNS 5 was independently associated with mortality (HR 2.12 [1.43–3.14]) and UO (OR 3.23 [1.67–6.25]). The presence of hydrocephalus was associated with a lower risk of mortality (HR 0.60 [0.43–0.84]). Conclusions Both hospital mortality and UO remained high in poor grade SAH patients. Patients with WFNS 5 on admission had worse prognosis than others; this should be taken into consideration for future clinical studies. Supplementary Information The online version contains supplementary material available at 10.1186/s12883-021-02229-1.
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Affiliation(s)
- Elisa Gouvêa Bogossian
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium.
| | - Daniela Diaferia
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Andrea Minini
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Narcisse Ndieugnou Djangang
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Marco Menozzi
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Lorenzo Peluso
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Filippo Annoni
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Jacques Creteur
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
| | - Sophie Schuind
- Department of Neurosurgery Erasmus Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Olivier Dewitte
- Department of Neurosurgery Erasmus Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Fabio Silvio Taccone
- Department of Intensive Care Erasmus Hospital, Université Libre de Bruxelles (ULB), Route de Lennik, 808, 1070, Brussels, Belgium
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Tasiou A, Brotis AG, Paschalis T, Tzerefos C, Kapsalaki EZ, Giannis T, Tzannis A, Fountas KN. Intermediate surgical outcome in patients suffering poor-grade aneurysmal subarachnoid hemorrhage. A single center experience. Int J Neurosci 2020; 132:38-50. [PMID: 32746674 DOI: 10.1080/00207454.2020.1801676] [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] [Indexed: 10/23/2022]
Abstract
BACKGROUND It is known that patients suffering poor-grade aneurysmal subarachnoid hemorrhage (aSAH) have a dismal prognosis. The importance of early intervention is well established in the pertinent literature. Our aim was to assess the functional outcome and overall survival of these patients undergoing surgical clipping. MATERIAL AND METHODS In the current retrospective study we included all consecutive poor-grade patients after spontaneous SAH who presented at our institution over an eight-year period. All participants suffering SAH underwent brain CT angiography (CTA) to identify the source of hemorrhage. We assessed the severity of hemorrhage according to the Fisher grade classification scale. All patients were surgically treated. The functional outcome was evaluated six months after the onset with the Glasgow Outcome Scale. Finally, we performed logistic and Cox regression analyses to identify potential prognostic risk factors. RESULTS Our study included twenty-three patients with a mean age of 53 years. Five (22%) patients presented with Hunt and Hess grade IV, and eighteen (78%) with grade V. The mean follow-up was 15.8 months, while the overall mortality rate was 48%. The six-month functional outcome was favorable in 6 (26%) patients. The vast majority of our patients died between the 15th and the 60th post-ictal days. We did not identify any statistically significant prognostic factors related to the patient's outcome and/or survival. CONCLUSIONS Poor-grade aSAH patients may have a favorable outcome with proper surgical management. Large-scale studies are necessary for accurately outlining the prognosis of this entity, and identifying parameters that could be predictive of outcome.
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Affiliation(s)
- Anastasia Tasiou
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Alexandros G Brotis
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Thanasis Paschalis
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Christos Tzerefos
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Eftychia Z Kapsalaki
- Department of Neuroradiology, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Theofanis Giannis
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Alkiviadis Tzannis
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
| | - Kostas N Fountas
- Department of Neurosurgery, University Hospital of Larissa, School of Medicine, University of Thessaly, Larissa, Greece
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Chernyshev OY, Bir SC, Maiti TK, Patra DP, Sun H, Guthikonda B, Kelley RE, Cuellar H, Minagar A, Nanda A. The Relationship Between Obstructive Sleep Apnea and Ruptured Intracranial Aneurysms. J Clin Sleep Med 2019; 15:1839-1848. [PMID: 31839111 PMCID: PMC7099178 DOI: 10.5664/jcsm.8096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 06/02/2017] [Accepted: 07/12/2017] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES The role of obstructive sleep apnea (OSA) in the overall outcome of ruptured intracranial aneurysms (RIAs) is unknown. We have investigated the role of OSA in overall outcome of RIAs. METHODS Data from 159 consecutive patients were retrospectively reviewed. A chi-square test and regression analysis were performed to determine the significant difference. A value of P < .05 was considered significant. RESULTS The prevalence of OSA in RIAs was fivefold higher in the nonaneurysm patient group, P = .002. The number of patients with hypertension (P < .0001), body mass index ≥ 30 (P < .0001), hyperlipidemia (P = .018), chronic heart disease (P = .002) or prior ischemic stroke (P = .001) was significantly higher in the OSA group. Similarly, the number of wide-neck aneurysms (P < .0001) and aneurysm > 7 mm (P = .004), poor Hunt and Hess grade IV-V (P = .005), vasospasms, (P = .03), and patients with poor Modified Rankin Scale scores (3-6) was significantly higher in the OSA group (P < .0001). Interestingly, for the first time in univariate (P = .01) and multivariate (P = .003) regression analysis, OSA was identified as an individual predictor of unfavorable outcome of RIAs. In addition, hypertension (P = .04), smoking (P = .049), chronic heart disease (P = .01), and Hunt and Hess grade IV-V (P = .04) were revealed as predictors of poor outcome of RIAs. CONCLUSIONS This is a novel study to determine the association between OSA and ruptured cerebral aneurysm in terms of comorbidities, size of aneurysm, severity of symptoms, and outcomes after treatment. In addition, for the first time, OSA is identified as a positive predictor of unfavorable outcome of RIAs.
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Affiliation(s)
- Oleg Y Chernyshev
- Department of Neurology and Sleep Medicine, LSU Health-Shreveport, Shreveport, Louisiana
- Contributed equally
| | - Shyamal C Bir
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
- Contributed equally
| | - Tanmoy K Maiti
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Devi Prasad Patra
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Hai Sun
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Bharat Guthikonda
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Roger E Kelley
- Department of Neurology and Sleep Medicine, LSU Health-Shreveport, Shreveport, Louisiana
| | - Hugo Cuellar
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Alireza Minagar
- Department of Neurology and Sleep Medicine, LSU Health-Shreveport, Shreveport, Louisiana
| | - Anil Nanda
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
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Catapano JS, Lang MJ, Koester SW, Wang DJ, DiDomenico JD, Fredrickson VL, Cole TS, Lee J, Lawton MT, Ducruet AF, Albuquerque FC. Digital subtraction cerebral angiography after negative computed tomography angiography findings in non-traumatic subarachnoid hemorrhage. J Neurointerv Surg 2019; 12:526-530. [DOI: 10.1136/neurintsurg-2019-015375] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/04/2019] [Accepted: 10/18/2019] [Indexed: 11/03/2022]
Abstract
BackgroundCT angiography (CTA) is widely used for the detection of vascular lesions in patients with non-traumatic subarachnoid hemorrhage (ntSAH); however, digital subtraction angiography (DSA) remains the gold standard for diagnosis. Our aim was to analyze the diagnostic yield of DSA after negative high-resolution CTA findings.MethodsRecords of patients with a CTA-negative ntSAH at a single institution from 2014 to 2018 were retrospectively analyzed. ntSAH patterns were categorized as cortical, perimesencephalic, or diffuse. Subsequent DSA findings were compared across the three cohorts.ResultsA total of 186 patients had CTA-negative ntSAH. The ntSAH pattern was identified as cortical (n=77, 41.4%), diffuse (n=60, 32.3%), or perimesencephalic (n=49, 26.3%). In eight patients (4%), DSA revealed a vascular lesion (one cervical arteriovenous fistula and seven atypical aneurysms) after negative CTA findings. All eight patients with positive DSA findings had diffuse SAH (13% of patients with a diffuse pattern). The seven aneurysms included four blister or dissecting (two basilar artery, one superior cerebellar artery, and one dorsal wall internal carotid artery), two fusiform (one posterior communicating artery and one anterior spinal artery), and one saccular aneurysm (middle cerebral artery).ConclusionDSA identified a causative lesion in 4% of patients with CTA-negative ntSAH, but only in patients with diffuse ntSAH. Most of the lesions detected were atypical aneurysms and were found on delayed angiograms. These results suggest that DSA can help to diagnose CTA-negative ntSAH caused by unusual aneurysms, and repeat DSA may be needed only for patients with diffuse ntSAH.
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van der Steen WE, Marquering HA, Boers AM, Ramos LA, van den Berg R, Vergouwen MD, Majoie CB, Coert BA, Vandertop WP, Verbaan D, Roos YB. Predicting Delayed Cerebral Ischemia with Quantified Aneurysmal Subarachnoid Blood Volume. World Neurosurg 2019; 130:e613-e619. [DOI: 10.1016/j.wneu.2019.06.170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 06/20/2019] [Indexed: 01/27/2023]
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Can A, Castro VM, Dligach D, Finan S, Yu S, Gainer V, Shadick NA, Savova G, Murphy S, Cai T, Weiss ST, Du R. Elevated International Normalized Ratio Is Associated With Ruptured Aneurysms. Stroke 2018; 49:2046-2052. [PMID: 30354989 DOI: 10.1161/strokeaha.118.022412] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background and Purpose- The effects of anticoagulation therapy and elevated international normalized ratio (INR) values on the risk of aneurysmal subarachnoid hemorrhage are unknown. We aimed to investigate the association between anticoagulation therapy, elevated INR values, and rupture of intracranial aneurysms. Methods- We conducted a case-control study of 4696 patients with 6403 intracranial aneurysms, including 1198 prospective patients, diagnosed at the Massachusetts General Hospital and the Brigham and Women's Hospital between 1990 and 2016 who were on no anticoagulant therapy or on warfarin for anticoagulation. Patients were divided into ruptured and nonruptured groups. Univariable and multivariable logistic regression analyses were performed to evaluate the association of anticoagulation therapy, INR values, and presentation with a ruptured intracranial aneurysm, taking into account the interaction between anticoagulant use and INR. Inverse probability weighting using propensity scores was used to minimize differences in baseline demographics characteristics. The marginal effects of anticoagulant use on rupture risk stratified by INR values were calculated. Results- In unweighted and weighted multivariable analyses, elevated INR values were significantly associated with rupture status among patients who were not anticoagulated (unweighted odds ratio, 22.78; 95% CI, 10.85-47.81 and weighted odds ratio, 28.16; 95% CI, 12.44-63.77). In anticoagulated patients, warfarin use interacts significantly with INR when INR ≥1.2 by decreasing the effects of INR on rupture risk. Conclusions- INR elevation is associated with intracranial aneurysm rupture, but the effects may be moderated by warfarin. INR values should, therefore, be taken into consideration when counseling patients with intracranial aneurysms.
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Affiliation(s)
- Anil Can
- From the Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (A.C., R.D.)
| | - Victor M Castro
- Brigham and Women's Hospital, Boston, MA; Research Information Systems and Computing, Partners Healthcare, Boston, MA (V.M.C., V.G., S.M.)
| | - Dmitriy Dligach
- Department of Computer Science, Loyola University, Chicago, IL (D.D.)
| | - Sean Finan
- Boston Children's Hospital Informatics Program, MA (S.F., G.S.)
| | - Sheng Yu
- Center for Statistical Science, Tsinghua University, Beijing, China (S.Y.)
| | - Vivian Gainer
- Brigham and Women's Hospital, Boston, MA; Research Information Systems and Computing, Partners Healthcare, Boston, MA (V.M.C., V.G., S.M.)
| | | | - Guergana Savova
- Boston Children's Hospital Informatics Program, MA (S.F., G.S.)
| | - Shawn Murphy
- Brigham and Women's Hospital, Boston, MA; Research Information Systems and Computing, Partners Healthcare, Boston, MA (V.M.C., V.G., S.M.).,Department of Neurology, Massachusetts General Hospital, Boston (S.M.)
| | - Tianxi Cai
- Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA (T.C.)
| | - Scott T Weiss
- Channing Division of Network Medicine (S.T.W., R.D.)
| | - Rose Du
- From the Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (A.C., R.D.).,Channing Division of Network Medicine (S.T.W., R.D.)
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22
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Thompson M, McIntyre L, Hutton B, Tran A, Wolfe D, Hutchison J, Fergusson D, Turgeon AF, English SW. Comparison of crystalloid resuscitation fluids for treatment of acute brain injury: a clinical and pre-clinical systematic review and network meta-analysis protocol. Syst Rev 2018; 7:125. [PMID: 30115113 PMCID: PMC6097326 DOI: 10.1186/s13643-018-0790-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/30/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Current guidelines identify the choice of fluid resuscitation as important in minimizing the incidence of secondary brain injury from cerebral edema. It is widely accepted that isotonic crystalloid resuscitation fluids, specifically normal saline (NS), are optimal for resuscitation and that other relatively hypotonic fluids, such as Ringer's lactate (RL), should be avoided in this patient population. The aim of this review is to systematically compare the use of relatively hypotonic versus isotonic crystalloid resuscitation fluids in clinical and pre-clinical models of acute brain injury and their effect on outcomes. In recognition of the potential need for a network meta-analysis (NMA), we have also included all other relevant crystalloid resuscitation fluids as interventions of relevance to potentially inform indirect comparisons. METHODS Systematic searches of MEDLINE, Embase, and Web of Science BIOSIS Previews® will be used to identify eligible clinical and pre-clinical studies, which included studies examining acute brain injury (human and in vivo animal brain injury models) within the first 7 days of therapy. The intervention of interest is the intravenous use of relatively hypotonic crystalloid resuscitation fluids (e.g., Ringer's lactate, Hartmann's or Plasma Lyte® fluids). The main comparator of interest is an isotonic crystalloid resuscitation fluid, specifically normal saline (0.9%). Other crystalloid resuscitation fluids (e.g., hypertonic saline (3-23.4%)) will also be included as an additional intervention of interest. The primary outcome measures of interest are intracranial pressure (ICP) and cerebral perfusion pressure (CPP). Secondary outcomes include the effect of resuscitation on cerebral edema, brain and serum osmolarity, and electrolyte concentrations and clinical outcomes including modified Rankin Scale (mRS), (extended) Glasgow Outcome Scale (GOS/eGOS), and mortality. Separate meta-analyses will be conducted to quantify the effects of the different fluid resuscitation on acute brain injury outcomes in clinical and pre-clinical populations. Network meta-analyses to compare interventions will also be performed to compare the effects of different interventions. DISCUSSION This systematic review will comprehensively summarize the difference in treatment efficacy of various crystalloid resuscitation fluids in acute brain injury. This review is essential to underscore the evidence, or lack thereof, present in the literature to date to support current preference-driven practice and to direct future study. SYSTEMATIC REVIEW REGISTRATION PROSPERO #CRD42016042960.
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Affiliation(s)
- Mary Thompson
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
| | - Lauralyn McIntyre
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
- Department of Medicine (Critical Care), University of Ottawa, CPCR Building, 501 Smyth Rd, CPCR Box 201B, Ottawa, Ontario K1H 8L6 Canada
| | - Brian Hutton
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario Canada
| | - Alexandre Tran
- Department of General Surgery, University of Ottawa, Ottawa, Ontario Canada
| | - Dianna Wolfe
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
| | - Jamie Hutchison
- Department of Critical Care, Sick Kids Hospital, Toronto, Ontario Canada
| | - Dean Fergusson
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
| | - Alexis F. Turgeon
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
- Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Université Laval, Quebec City, Quebec Canada
- CHU de Québec - Université Laval Research Center, Population Health and Optimal Health Practices Unit (Trauma - Emergency - Critical Care Medicine), CHU de Québec, Université Laval (Hôpital de L’Enfant-Jésus), Quebec City, Quebec Canada
| | - Shane W. English
- Clinical Epidemiology Program (CEP), Ottawa Hospital Research Institute, Ottawa, Ontario Canada
- Department of Medicine (Critical Care), University of Ottawa, CPCR Building, 501 Smyth Rd, CPCR Box 201B, Ottawa, Ontario K1H 8L6 Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario Canada
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23
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Comparison of Aggressive Surgical Treatment and Palliative Treatment in Elderly Patients with Poor-Grade Intracranial Aneurysmal Subarachnoid Hemorrhage. BIOMED RESEARCH INTERNATIONAL 2018; 2018:5818937. [PMID: 29998135 PMCID: PMC5994574 DOI: 10.1155/2018/5818937] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 04/19/2018] [Indexed: 12/29/2022]
Abstract
Objective To compare the current treatment approach in elderly patients with poor-grade aneurysmal subarachnoid hemorrhage (SAH) and identify the independent predictors of the outcome after aggressive surgical treatment. Method This prospective, multicenter cohort study included 104 poor-grade aneurysmal SAH elderly patients, 60 years or older, treated in our institution from October 2010 to March 2013. Patients were grouped according to three treatment arms. Neurological outcome was assessed using the Glasgow Outcome Scale (GOS) at baseline and at a 12-month follow-up. Univariate and multivariate analysis were performed using the following factors: sex, age, smoking history, breathing ability, alcohol consumption, cerebral hernia, aneurysm location, aneurysm diameter, WFNS grade, CT Fisher grade, treatment approach, and the timing of the aneurysm surgery. Results At the 12-month follow-up, patients in the coiling group and clipping group had better prognosis than patients in the palliative treatment group. Univariate analysis confirmed that the treatment approach, WFNS grade, CT Fisher grade, and age are critical factors for neurological outcomes in poor-grade SAH. Multivariate analysis indicated that WFNS grade V, CT Fisher grades 3-5, and palliative treatment were independent predictors of poor prognoses. Conclusion Aggressive surgical treatment improves the prognoses in poor-grade aneurysm elderly patients with SAH. Elderly Patients of WFNS grade IV and CT Fisher grades 1-2 are more likely to have a better outcome.
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24
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van der Steen WE, Zijlstra IA, Verbaan D, Boers AMM, Gathier CS, van den Berg R, Rinkel GJE, Coert BA, Roos YBWEM, Majoie CBLM, Marquering HA. Association of Quantified Location-Specific Blood Volumes with Delayed Cerebral Ischemia after Aneurysmal Subarachnoid Hemorrhage. AJNR Am J Neuroradiol 2018; 39:1059-1064. [PMID: 29650786 DOI: 10.3174/ajnr.a5626] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 02/12/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Delayed cerebral ischemia is a severe complication of aneurysmal SAH and is associated with a high case morbidity and fatality. The total blood volume and the presence of intraventricular blood on CT after aneurysmal SAH are associated with delayed cerebral ischemia. Whether quantified location-specific (cisternal, intraventricular, parenchymal, and subdural) blood volumes are associated with delayed cerebral ischemia has been infrequently researched. This study aimed to associate quantified location-specific blood volumes with delayed cerebral ischemia. MATERIALS AND METHODS Clinical and radiologic data were collected retrospectively from consecutive patients with aneurysmal SAH with available CT scans within 24 hours after ictus admitted to 2 academic centers between January 2009 and December 2011. Total blood volume was quantified using an automatic hemorrhage-segmentation algorithm. Segmented blood was manually classified as cisternal, intraventricular, intraparenchymal, or subdural. Adjusted ORs with 95% confidence intervals for delayed cerebral ischemia per milliliter of location-specific blood were calculated using multivariable logistic regression analysis. RESULTS We included 282 patients. Per milliliter increase in blood volume, the adjusted OR for delayed cerebral ischemia was 1.02 (95% CI, 1.01-1.04) for cisternal, 1.02 (95% CI, 1.00-1.04) for intraventricular, 0.99 (95% CI, 0.97-1.02) for intraparenchymal, and 0.96 (95% CI, 0.86-1.07) for subdural blood. CONCLUSIONS Our findings suggest that in patients with aneurysmal subarachnoid hemorrhage, the cisternal blood volume has a stronger relation with delayed cerebral ischemia than the blood volumes at other locations in the brain.
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Affiliation(s)
- W E van der Steen
- From the Department of Biomedical Engineering and Physics (W.E.v.d.S., A.M.M.B., H.A.M.) .,Department of Radiology (W.E.v.d.S., I.A.Z., A.M.M.B., R.v.d.B., C.B.L.M.M., H.A.M).,Neurosurgical Center Amsterdam (W.E.v.d.S., D.V., B.A.C.).,Department of Neurology (W.E.v.d.S., Y.B.W.E.M.R.), Academic Medical Center, Amsterdam, the Netherlands
| | - I A Zijlstra
- Department of Radiology (W.E.v.d.S., I.A.Z., A.M.M.B., R.v.d.B., C.B.L.M.M., H.A.M)
| | - D Verbaan
- Neurosurgical Center Amsterdam (W.E.v.d.S., D.V., B.A.C.)
| | - A M M Boers
- From the Department of Biomedical Engineering and Physics (W.E.v.d.S., A.M.M.B., H.A.M.).,Department of Radiology (W.E.v.d.S., I.A.Z., A.M.M.B., R.v.d.B., C.B.L.M.M., H.A.M).,Department of Robotics and Mechatronics (A.M.M.B.), University of Twente, Enschede, the Netherlands
| | - C S Gathier
- Department of Neurology and Neurosurgery (C.S.G., G.J.E.R.), Brain Center Rudolf Magnus, University Medical Center, Utrecht, the Netherlands
| | - R van den Berg
- Department of Radiology (W.E.v.d.S., I.A.Z., A.M.M.B., R.v.d.B., C.B.L.M.M., H.A.M)
| | - G J E Rinkel
- Department of Neurology and Neurosurgery (C.S.G., G.J.E.R.), Brain Center Rudolf Magnus, University Medical Center, Utrecht, the Netherlands
| | - B A Coert
- Neurosurgical Center Amsterdam (W.E.v.d.S., D.V., B.A.C.)
| | - Y B W E M Roos
- Department of Neurology (W.E.v.d.S., Y.B.W.E.M.R.), Academic Medical Center, Amsterdam, the Netherlands
| | - C B L M Majoie
- Department of Radiology (W.E.v.d.S., I.A.Z., A.M.M.B., R.v.d.B., C.B.L.M.M., H.A.M)
| | - H A Marquering
- From the Department of Biomedical Engineering and Physics (W.E.v.d.S., A.M.M.B., H.A.M.).,Department of Radiology (W.E.v.d.S., I.A.Z., A.M.M.B., R.v.d.B., C.B.L.M.M., H.A.M)
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25
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de Oliveira Manoel AL, Mansur A, Silva GS, Germans MR, Jaja BNR, Kouzmina E, Marotta TR, Abrahamson S, Schweizer TA, Spears J, Macdonald RL. Functional Outcome After Poor-Grade Subarachnoid Hemorrhage: A Single-Center Study and Systematic Literature Review. Neurocrit Care 2017; 25:338-350. [PMID: 27651379 DOI: 10.1007/s12028-016-0305-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND AND PURPOSE Poor-grade subarachnoid hemorrhage (SAH) (World Federation of Neurosurgical Societies grade 4 and 5) is associated with high mortality rates and unfavorable functional outcomes. We report a single-center cohort of poor-grade SAH patients, combined with a systematic review of studies reporting functional outcome in the poor-grade SAH population. METHODS Data on a cohort of poor-grade SAH patients treated between 2009 and 2013 were retrospectively collected and combined with a systematic review (from inception to November 2015; PubMed, Embase). Two reviewers assessed the studies independently based on predefined inclusion criteria: consecutive poor-grade SAH, functional outcome measured at least 3 months after hemorrhage, and the report of patients who died before aneurysm treatment. RESULTS The search yielded 329 publications, and 23 met our inclusion criteria with 2713 subjects enrolled from 1977 to 2014 in 10 countries (including 179 poor-grade patients from our cohort). Mortality rate was 60 % (1683 patients), of which 806 (29 %) died before and 877 (31 %) died after aneurysm treatment, respectively. Treatment was undertaken in 1775 patients (1775/2826-63 %): 1347 by surgical clipping (1347/1775-76 %) and 428 (428/1775-24 %) by endovascular methods. Outcome was favorable in 794 patients (28 %) and unfavorable in 1867 (66 %). When the studies were grouped into decades, favorable outcome increased from 13 % in the late 1970s to early 1980s to 35 % in the late 1980s to early 1990s, and remained unchanged thereafter. CONCLUSION Although mortality remains high in poor-grade SAH patients, a favorable functional outcome can be achieved in approximately one-third of patients. The development of new diagnostic methods and implementation of therapeutic approaches were probably responsible for the decrease in mortality and improvement in the functional outcome from 1970 to the 1990s. The plateau in functional outcome seen thereafter might be explained by the treatment of sicker and older patients and by the lack of new therapeutic interventions specific for SAH.
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Affiliation(s)
- Airton Leonardo de Oliveira Manoel
- Department of Medical Imaging, Interventional Neuroradiology, St. Michael's Hospital, University of Toronto, 3-141 CC, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada. .,Department of Critical Care Medicine, Trauma and Neurosurgical Intensive Care Unit, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada. .,Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada. .,Neurology and Neurosurgery Department, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Ann Mansur
- Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada.,Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Gisele Sampaio Silva
- Neurology and Neurosurgery Department, Universidade Federal de São Paulo, São Paulo, Brazil.,Instituto Israelita de Pesquisa Albert Einstein, Neurology Program, São Paulo, Brazil
| | - Menno R Germans
- Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Blessing N R Jaja
- Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada
| | - Ekaterina Kouzmina
- Department of Medical Imaging, Interventional Neuroradiology, St. Michael's Hospital, University of Toronto, 3-141 CC, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada
| | - Thomas R Marotta
- Department of Medical Imaging, Interventional Neuroradiology, St. Michael's Hospital, University of Toronto, 3-141 CC, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.,Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada
| | - Simon Abrahamson
- Department of Critical Care Medicine, Trauma and Neurosurgical Intensive Care Unit, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada.,Department of Anesthesiology, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada
| | - Tom A Schweizer
- Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada
| | - Julian Spears
- Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada.,Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada
| | - R Loch Macdonald
- Neuroscience Research Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Canada.,Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada
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Endothelial Nitric Oxide Synthase Polymorphism Is Associated with Delayed Cerebral Ischemia Following Aneurysmal Subarachnoid Hemorrhage. World Neurosurg 2017; 101:514-519. [PMID: 28254540 DOI: 10.1016/j.wneu.2017.02.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 02/10/2017] [Accepted: 02/11/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND PURPOSE Nitric oxide is critical in the regulation of cerebral blood flow and smooth muscle proliferation. It is synthesized by 3 nitric oxide synthase (NOS) isoforms: neuronal, inducible, and endothelial NOS (eNOS). Aneurysmal subarachnoid hemorrhage (aSAH) causes endothelial dysfunction that, in turn, contributes to pathophysiologic processes surrounding aSAH. Previous studies reported an association of an eNOS single nucleotide polymorphism (SNP) with the clinical sequelae of aSAH. Here, we further elucidate the impact of this eNOS SNP on the clinical course after aSAH. METHODS The Cerebral Aneurysm Renin Angiotensin System study prospectively enrolled aSAH patients at 2 academic institutions in the United States from 2012-2015. Blood samples from all patients enrolled in the study were used for genetic evaluation using 5'exonuclease (Taqman) genotyping assays. Associations between the eNOS SNP rs2070744 (786 T->C) and clinical course after aSAH were analyzed. RESULTS Samples from 149 aSAH patients were available for analysis. The C allele of the eNOS SNP independently predicted an increased risk for delayed cerebral ischemia (OR = 2.936, 95% CI 1.048-8.226, P = 0.040). The eNOS SNP rs2070744 was not associated with functional outcome or size of aneurysm at the time of rupture. CONCLUSIONS The present study is the first to demonstrate that the C allele of the eNOS SNP 786 T->C rs2070744 is independently associated with an increased risk for delayed cerebral ischemia following aSAH.
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Kranthi S, Sahu BP, Aniruddh P. Factors affecting outcome in poor grade subarachnoid haemorrhage: An institutional study. Asian J Neurosurg 2016; 11:365-371. [PMID: 27695539 PMCID: PMC4974960 DOI: 10.4103/1793-5482.149991] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Context: Poor grade subarachnoid hemorrhage (SAH) is usually associated with unfavorable outcomes and optimal management is deemed complicated. Most centres follow an expectant management strategy or a less aggressive approach till patients improve to good clinical grades. This approach has been associated with higher mortality and morbidity. However, not all patients with poor clinical condition fare badly. Identification and early aggressive management of this select group of patients may lead to favorable outcomes. Settings and Design: Prospective non-randomized study. Materials and Methods: We prospectively analyzed 19 cases presented in WFNS grade 4 and 5 and factors affecting their outcome at a tertiary care centre in south India. This study was aimed at identifying those few poor grade patients who are probable candidates for a good outcome. Statistical Analysis Used: All the variables were analyzed for possible correlations with the SPSS version 13 software. The Chi-square test with a P < 0.05 was taken as statistically significant. Results: Of 19 cases, 13 were operated and good outcome was seen in 53.8% of the patients who underwent surgery and aggressive management. All 7 patients who were managed conservatively died. 15.8% of the patients had low density changes (P = 0.625). Absence of such changes was associated with a good long term outcome (P = 0.004). 9 patients had intraventricular hemorrhage at presentation and 5 patients having hydrocephalus underwent extra-ventricular drainage. Statistically significant factors precluding good outcome were the presence of infarcts and thick SAH in the cisterns. Conclusions: Poor grade (WFNS 4 and 5) SAH patients with or without ICH, IVH, if operated within 3 days can give rise to favorable outcome in around 50%. However, presence of patchy infarcts associated with thick subarachnoid blood (Fisher grade 3) precludes long term survival or meaningful recovery. Hence, aggressive management is unlikely to alter the natural history of such patients.
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Affiliation(s)
- Sannepaneni Kranthi
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - Barada P Sahu
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, India
| | - Purohit Aniruddh
- Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, India
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320-Row Multidetector CT Angiography in the Detection of Critical Cerebrovascular Anomalies. Can J Neurol Sci 2016; 43:543-8. [PMID: 26963444 DOI: 10.1017/cjn.2016.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The acquisition of a new 320-row multidetector computed tomography angiography (CTA) scanner at the Montreal Neurological Institute and Hospital has provided higher quality imaging with less radiation exposure and shorter time of acquisition. However, its reliability has not been fully proven in critical vascular lesions when it comes to replacing a more invasive examination such as cerebral angiography. We wished to validate the accuracy of this equipment to investigate four common indications for patients to undergo conventional digital subtraction angiography: subarachnoid hemorrhage, vasospasm, unusual intracerebral hemorrhage, and unruptured aneurysm. METHODS Radiological reports and relevant imaging from 82 consecutive subjects who underwent a 320-row multidetector CTA followed by cerebral angiography from February 2010 to February 2014 were retrospectively analysed. A total of 102 cerebrovascular anomalies were found. Reports from both imaging modalities were compared to determine the diagnostic accuracy of CTA. RESULTS The overall sensitivity and specificity of 320-row multidetector CTA for detecting cerebrovascular abnormalities were, respectively, 97.60% and 63.20%. Similar results were obtained for all four categories of clinical indications. CONCLUSION Results obtained from CTA were consistent with those obtained on digital subtraction angiography regardless of the vascular pathology. To our knowledge, this study is the first validating the accuracy of 320-row CTA in diagnosing critical cerebrovascular lesions.
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Grasso G, Perra G. Surgical management of ruptured small cerebral aneurysm: Outcome and surgical notes. Surg Neurol Int 2015; 6:185. [PMID: 26677419 PMCID: PMC4681126 DOI: 10.4103/2152-7806.171257] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/23/2015] [Indexed: 12/12/2022] Open
Abstract
Background: Management of small aneurysms often poses a therapeutic dilemma and surgical treatment or coiling can be considered as therapeutic choices. In the present study, we reviewed our series of ruptured small cerebral aneurysm treated surgically. Methods: A total of 53 consecutive patients with ruptured small aneurysm were surgically treated between January 2008 and July 2014. Data were retrospectively collected. Procedure-related death and complications were systematically reviewed. Clinical outcomes were assessed using the Modified Ranking Scale. Neuroradiological follow-up was performed to assess aneurysmal occlusion and recanalization rate. Results: The mean aneurysm size was 2 mm ± 0.8 mm. All the patients were operated and the aneurysm clipped. Clinical outcomes were as expected on the basis of the presenting Hunt and Hess grade. Overall, major and minor neurological deficit related to clipping were 5.2% and 2.2%, respectively. At the time of discharge, 84.9% of the patients presented with a favorable outcome, while 15.1% had poor clinical outcome. Aneurysm occlusion was achieved in all the cases. Neither recanalization nor re-aneurysmal rupture was observed in the clinical follow-up. Conclusion: Aneurysms, 3 mm in diameter or smaller, represent a therapeutic challenge. Given the proven role of microsurgery in small aneurysms and the perceived challenges with endovascular therapy, surgical clipping still can be considered an effective treatment modality in this setting.
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Affiliation(s)
- Giovanni Grasso
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Neurosurgery, University of Palermo, Palermo, Italy
| | - Giancarlo Perra
- Unit of Neurosurgery, A.R.N.A.S.Civico Hospital, Palermo, Italy
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Pinnamaneni S, Dutta T, Melcer J, Aronow WS. Neurogenic stress cardiomyopathy associated with subarachnoid hemorrhage. Future Cardiol 2015; 11:77-87. [PMID: 25606704 DOI: 10.2217/fca.14.73] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Cardiac manifestations are recognized complications of subarachnoid hemorrhage. Neurogenic stress cardiomyopathy is one complication that is seen in acute subarachnoid hemorrhage. It can present as transient diffuse left ventricular dysfunction or as transient regional wall motion abnormalities. It occurs more frequently with neurologically severe-grade subarachnoid hemorrhage and is associated with increased morbidity and poor clinical outcomes. Managing this subset of patients is challenging. Early identification followed by a multidisciplinary team approach can potentially improve outcomes.
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Dolati P, Pittman D, Morrish WF, Wong J, Sutherland GR. The Frequency of Subarachnoid Hemorrhage from Very Small Cerebral Aneurysms (< 5 mm): A Population-Based Study. Cureus 2015; 7:e279. [PMID: 26180703 PMCID: PMC4494560 DOI: 10.7759/cureus.279] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2015] [Indexed: 11/25/2022] Open
Abstract
Background: The prevailing view amongst neurosurgeons is that the larger the aneurysm, the higher the chance of rupture. This implies that very small aneurysms rarely rupture. To investigate this theory, we conducted a cross-sectional hospital-based study of aneurysmal subarachnoid hemorrhage, with an emphasis on aneurysm size at the time of rupture. Methods: We retrospectively reviewed hospital records and radiological tests of all patients admitted to Foothills Medical Center, Calgary, Alberta, with a ruptured saccular aneurysm from January 2008 to January 2012. The size of the dome and neck (in millimeters), the aspect ratio (aneurysm depth to aneurysm neck), and location of the aneurysms were determined using preoperative computed tomography angiography and digital subtraction angiography. Findings: One hundred and twenty-three patients with a ruptured saccular aneurysm were identified. The average size of the dome, neck, and the aspect ratio was 6.6±4.4 mm (range: 1.5-26 mm), 3.1 mm, and 2.6±0.9, respectively. Forty-six patients (37%) had a ruptured aneurysm with dome size < 5 mm (range: 1.5-4.9 mm). For these small aneurysms, the average size of the dome, neck, and the aspect ratio was 3.9+1.1 mm, 1.6 mm, and 2.1+0.6, respectively. The anterior communicating artery was the most common location regardless of size. Conclusion: Small aneurysms (< 5 mm) are a common cause of aneurysmal subarachnoid hemorrhage. When unruptured, looking for other risk factors for rupture is highly recommended before simply leaving them alone.
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Affiliation(s)
| | | | | | - John Wong
- clinical neurosciences, University of Calgary
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Optimal hemoglobin concentration in patients with aneurysmal subarachnoid hemorrhage after surgical treatment to prevent symptomatic cerebral vasospasm. Neuroreport 2015; 26:263-6. [DOI: 10.1097/wnr.0000000000000340] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Neurogenic Stress Cardiomyopathy After Aneurysmal Subarachnoid Hemorrhage. World Neurosurg 2015; 83:880-5. [PMID: 25655685 DOI: 10.1016/j.wneu.2015.01.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 12/21/2014] [Accepted: 01/19/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND Neurogenic stress cardiomyopathy (NSC) is a known complication of aneurysmal subarachnoid hemorrhage (SAH). Detailed analyses of risk factors for its occurrence across large cohorts are relatively sparse. METHODS A consecutive group of 300 patients with aneurysmal SAH was reviewed for the presence of markers of myocardial injury, including electrocardiogram changes (long QT, T-wave inversion), elevated plasma troponin levels (≥0.1), and echocardiogram findings (decreased ejection fraction and wall motion abnormalities). NSC was defined as the presence of at least 1 marker of myocardial injury. Univariate and multivariate analyses were conducted to assess the correlation of NSC and individual markers of myocardial injury with age, gender, medical comorbidities, medications, current smoking status, Hunt-Hess grade, and Fisher grade. Medical comorbidities were assessed based on reported medical history or reported use of comorbidity-specific medications at the time of presentation. RESULTS Across the cohort, 27% of patients had a plasma troponin elevation of at least 0.1; 13%, a prolonged QT interval; 16%, new T-wave inversions; 18%, a depressed ejection fraction (<55%); and 15%, echocardiographic wall motion abnormalities. After a multivariate analysis, significant risk factors for NSC included higher Hunt-Hess grade on presentation (odds ratio [OR] = 2.33, P = 4.52 × 10(-6)), current smoking status (OR = 2.00, P = 0.030), and older age (OR = 1.03, P = 0.048). Hypertension was protective against NSC (OR = 0.48, P = 0.031). Patient gender, hyperlipidemia, diabetes, coronary artery disease, statin use, beta blocker use, angiotensin-converting enzyme inhibitor use, aspirin use, and thicker SAH (Fisher grade 3) were not significant risk factors for NSC. CONCLUSIONS Higher Hunt-Hess grade, current smoking status, lack of hypertension, and older age were the strongest predictors of NSC.
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320-Row Multidetector Computed Tomographic Angiogram in the Evaluation of Cerebral Vasospasm After Aneurysmal Subarachnoid Hemorrhage. J Comput Assist Tomogr 2015; 39:541-6. [DOI: 10.1097/rct.0000000000000246] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Li J, Shen B, Ma C, Liu L, Ren L, Fang Y, Dai D, Chen S, Lu J. 3D contrast enhancement-MR angiography for imaging of unruptured cerebral aneurysms: a hospital-based prevalence study. PLoS One 2014; 9:e114157. [PMID: 25463352 PMCID: PMC4252087 DOI: 10.1371/journal.pone.0114157] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 11/04/2014] [Indexed: 12/11/2022] Open
Abstract
Background and Purpose Contrast enhanced MRA (CE-MRA) can help to overcome the limitations of other techniques to clearly display the details of cerebral aneurysms at 1.5-T MR system. We investigated the prevalence of unruptured cerebral aneurysms (UCAs) using three dimensional (3D) CE-MRA in a tertiary comprehensive hospital in China. Materials and Methods The cases were prospectively recorded at our hospital between February 2009 and October 2010. 3D CE-MRA, interpreted by 2 observers blinded to the participants’ information, was used to identify the location and size of UCAs and to estimate the overall, age-specific, and sex-specific prevalence. Results Of the 3993 patients (men: women = 2159∶1834), 408 UCAs were found in 350 patients (men: women = 151∶199). The prevalence was 8.8% overall (95% CI, 8.0–10.0%), with 7.0% for men (CI, 6.0–8.0%) and 10.9% for women (CI, 9.0–12.0%). The overall prevalence of UCAs was higher in women than in men (P<0.001) and increased with age both in men and women. Prevalence peaked at age group 75–80 years. Forty-two patients (11.7%) had multiple aneurysms, including 10 (2.9%) male patients and 32 (9.1%) female patients. The most common site of aneurysm was the carotid siphon, and most lesions (71.3%) had a maximum diameter of 3−5 mm. Conclusion This hospital-based prevalence study suggested a high prevalence (8.8%) of UCAs and most lesions (71.3%) had a maximum diameter of 3–5 mm observed by 3D CE-MRA. Because the rupture of small cerebral aneurysms was not uncommon, an appropriate follow-up care strategy must be formulated.
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Affiliation(s)
- Jing Li
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Bixia Shen
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Chao Ma
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Li Liu
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Li Ren
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Yibin Fang
- Department of neurosurgery, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Dongwei Dai
- Department of neurosurgery, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Shiyue Chen
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
| | - Jianping Lu
- Department of Radiology, Changhai Hospital of Shanghai, the Second Military Medical University, Shanghai, 200433, China
- * E-mail:
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Hwang US, Shin HS, Lee SH, Koh JS. Decompressive Surgery in Patients with Poor-grade Aneurysmal Subarachnoid Hemorrhage: Clipping with Simultaneous Decompression Versus Coil Embolization Followed by Decompression. J Cerebrovasc Endovasc Neurosurg 2014; 16:254-61. [PMID: 25340028 PMCID: PMC4205252 DOI: 10.7461/jcen.2014.16.3.254] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 08/28/2014] [Accepted: 09/10/2014] [Indexed: 02/05/2023] Open
Abstract
Objective In addition to obliterating the aneurysm using clipping or coiling, decompressive surgery for control of rising intracranial pressure (ICP) is thought to be crucial to prevention of adverse outcomes in patients with poor grade aneurysmal subarachnoid hemorrhage (aSAH). We evaluated the clinical characteristics of patients with poor-grade aSAH, and compared outcomes of aneurysmal clipping with simultaneous decompressive surgery to those of coil embolization followed by decompression. Materials and Methods In 591 patients with aSAH, 70 patients with H-H grade IV and V underwent decompressive surgery including craniectomy, lobectomy, and hematoma removal. We divided the patients into two groups according to clipping vs. coil embolization (clip group vs. coil group), and analyzed outcomes and mortality. Results Aneurysmal clipping was performed in 40 patients and coil embolization was performed in 30 patients. No significant differences in demographics were observed between the two groups. Middle cerebral artery and posterior circulation aneurysms were more frequent in the clip group. Among 70 patients, mortality occurred in 29 patients (41.4%) and 61 patients (87.1%) had a poor score on the Glasgow outcome scale (scores I-III). No significant difference in mortality was observed between the two groups, but a favorable outcome was more frequent in the coil group (p < 0.05). Conclusion In this study, despite aggressive surgical and endovascular management for elevated ICP, there were high rates of adverse outcomes and mortality in poor-grade aSAH. Despite poor outcomes overall, early coil embolization followed by decompression surgery could lead to more favorable outcomes in patients with poor-grade aSAH.
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Affiliation(s)
- Ui Seung Hwang
- Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea
| | - Hee Sup Shin
- Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea
| | - Seung Hwan Lee
- Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea
| | - Jun Seok Koh
- Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea
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Gemmete JJ, Elias AE, Chaudhary N, Pandey AS. Endovascular methods for the treatment of intracranial cerebral aneurysms. Neuroimaging Clin N Am 2013; 23:563-91. [PMID: 24156851 DOI: 10.1016/j.nic.2013.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This article briefly discusses the clinical features, natural history, and epidemiology of intracranial cerebral aneurysms, along with current diagnostic imaging techniques for their detection. The main focus is on the basic techniques used in endovascular coiling of ruptured and nonruptured saccular intracranial cerebral aneurysms. After a discussion of each technique, a short review of the results of each form of treatment is given, concentrating on reported large case series. Specific complications related to the endovascular treatment of saccular intracranial aneurysms are then discussed.
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Affiliation(s)
- Joseph J Gemmete
- Division of Interventional Neuroradiology and Cranial Base Surgery, Departments of Radiology, Neurosurgery, and Otolaryngology, University of Michigan Health System, UH B1D 328, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5030, USA.
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Delgado Almandoz JE, Kadkhodayan Y, Crandall BM, Scholz JM, Fease JL, Anderson RE, Tubman DE. Diagnostic yield of delayed neurovascular imaging in patients with subarachnoid hemorrhage, negative initial CT and catheter angiograms, and a negative 7 day repeat catheter angiogram. J Neurointerv Surg 2013; 6:637-42. [DOI: 10.1136/neurintsurg-2013-010896] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mangiafico S, Guarnieri G, Consoli A, Ambrosanio G, Muto M. Endovascular strategy for unruptured cerebral aneurysms. Eur J Radiol 2013; 82:1638-45. [DOI: 10.1016/j.ejrad.2012.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 11/02/2012] [Indexed: 11/24/2022]
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40
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Clinical characteristics and outcomes of neurogenic stress cadiomyopathy in aneurysmal subarachnoid hemorrhage. Clin Neurol Neurosurg 2013; 115:909-14. [DOI: 10.1016/j.clineuro.2012.09.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 09/03/2012] [Indexed: 11/21/2022]
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Improved aneurysmal subarachnoid hemorrhage outcomes: A comparison of 2 decades at an academic center. J Crit Care 2013; 28:182-8. [DOI: 10.1016/j.jcrc.2012.05.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 05/16/2012] [Accepted: 05/19/2012] [Indexed: 11/21/2022]
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Delgado Almandoz JE, Crandall BM, Fease JL, Scholz JM, Anderson RE, Kadkhodayan Y, Tubman DE. Diagnostic yield of catheter angiography in patients with subarachnoid hemorrhage and negative initial noninvasive neurovascular examinations. AJNR Am J Neuroradiol 2012; 34:833-9. [PMID: 23019174 DOI: 10.3174/ajnr.a3291] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE The yield of DSA in patients with SAH and negative initial noninvasive neurovascular examinations (CTA or MRA) is not well-understood. This study aimed to determine the yield of DSA for the detection of causative vascular lesions in this clinical scenario. MATERIALS AND METHODS We examined the yield of DSA for the detection of causative vascular lesions in a cohort of patients presenting to our institution with SAH and negative initial noninvasive neurovascular examinations during a 5-year period. Two experienced neuroradiologists independently evaluated the NCCT to determine the SAH pattern (diffuse, perimesencephalic, or peripheral sulcal) and the catheter angiograms to assess the presence of a causative vascular lesion. RESULTS Fifty-five patients were included in the study, with a mean age of 58.2 years (median, 58 years; range, 25-88 years). Twenty-eight patients were men (50.9%), and 27 were women (49.1%). The initial noninvasive examination was a CTA in 47 patients (85.5%) and an MRA in 8 patients (14.5%). Thirty-three patients had diffuse SAH (60%); 11, perimesencephalic SAH (20%); and 11, peripheral sulcal SAH (20%). DSA demonstrated a causative vascular lesion in 6 patients (10.9%), 5 of whom had diffuse SAH (yield of 15.2%) and 1 of whom had peripheral sulcal SAH (yield of 9.1%). No causative vascular lesions were found in patients with perimesencephalic SAH. CONCLUSIONS DSA is a valuable tool in the evaluation of patients with diffuse and peripheral sulcal SAH who have negative initial noninvasive neurovascular examinations, demonstrating a causative vascular lesion in 15.2% and 9.1% of patients, respectively.
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Affiliation(s)
- J E Delgado Almandoz
- Division of Interventional Neuroradiology, Abbott Northwestern Hospital, Minneapolis, Minnesota 55407, USA.
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43
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Ionita CN, Jain A, Loughran B, Vasan S N S, Bednarek DR, Levy E, Siddiqui AH, Snyder KV, Hopkins LN, Rudin S. Evaluation of intracranial aneurysm coil embolization in phantoms and patients using a high-resolution Microangiographic Fluoroscope (MAF). PROCEEDINGS OF SPIE--THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING 2012; 8313. [PMID: 22905313 DOI: 10.1117/12.911333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Intracranial aneurysm (IA) embolization using Gugliemi Detachable Coils (GDC) under x-ray fluoroscopic guidance is one of the most important neuro-vascular interventions. Coil deposition accuracy is key and could benefit substantially from higher resolution imagers such as the micro-angiographic fluoroscope (MAF). The effect of MAF guidance improvement over the use of standard Flat Panels (FP) is challenging to assess for such a complex procedure. We propose and investigate a new metric, inter-frame cross-correlation sensitivity (CCS), to compare detector performance for such procedures. Pixel (P) and histogram (H) CCS's were calculated as one minus the cross-correlation coefficients between pixel values and histograms for the region of interest at successive procedure steps. IA treatment using GDC's was simulated using an anthropomorphic head phantom which includes an aneurysm. GDC's were deposited in steps of 3 cm and the procedure was imaged with a FP and the MAF. To measure sensitivity to detect progress of the procedure by change in images of successive steps, an ROI was selected over the aneurysm location and pixel-value and histogram changes were calculated after each step. For the FP, after 4 steps, the H and P CCSs between successive steps were practically zero, indicating that there were no significant changes in the observed images. For the MAF, H and P CCSs were greater than zero even after 10 steps (30 cm GDC), indicating observable changes. Further, the proposed quantification method was applied for evaluation of seven patients imaged using the MAF, yielding similar results (H and P CCSs greater than zero after the last GDC deposition). The proposed metric indicates that the MAF can offer better guidance during such procedures.
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Affiliation(s)
- Ciprian N Ionita
- University at Buffalo (State University of New York), Toshiba Stroke Research Center, 3435 Main St., Buffalo, NY 14214, USA
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Delgado Almandoz JE, Jagadeesan BD, Refai D, Moran CJ, Cross DT, Chicoine MR, Rich KM, Diringer MN, Dacey RG, Derdeyn CP, Zipfel GJ. Diagnostic yield of computed tomography angiography and magnetic resonance angiography in patients with catheter angiography-negative subarachnoid hemorrhage. J Neurosurg 2012; 117:309-15. [PMID: 22680242 DOI: 10.3171/2012.4.jns112306] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT The yield of CT angiography (CTA) and MR angiography (MRA) in patients with subarachnoid hemorrhage (SAH) who have a negative initial catheter angiogram is currently not well understood. This study aims to determine the yield of CTA and MRA in a prospective cohort of patients with SAH and a negative initial catheter angiogram. METHODS From January 1, 2005, until September 1, 2010, the authors instituted a prospective protocol in which patients with SAH-as documented by noncontrast CT or CSF xanthochromia and a negative initial catheter angiogram- were evaluated using CTA and MRA to assess for causative cerebral aneurysms. Two neuroradiologists independently evaluated the noncontrast CT scans to determine the SAH pattern (perimesencephalic or not) and the CT and MR angiograms to assess for causative cerebral aneurysms. RESULTS Seventy-seven patients were included, with a mean age of 52.8 years (median 54 years, range 19-88 years). Fifty patients were female (64.9%) and 27 male (35.1%). Forty-three patients had nonperimesencephalic SAH (55.8%), 29 patients had perimesencephalic SAH (37.7%), and 5 patients had CSF xanthochromia (6.5%). Computed tomography angiography demonstrated a causative cerebral aneurysm in 4 patients (5.2% yield), all of whom had nonperimesencephalic SAH (9.3% yield). Mean aneurysm size was 2.6 mm (range 2.1-3.3 mm). Magnetic resonance angiography demonstrated only 1 of these aneurysms. No causative cerebral aneurysms were found in patients with perimesencephalic SAH or CSF xanthochromia. CONCLUSIONS Computed tomography angiography is a valuable adjunct in the evaluation of patients with nonperimesencephalic SAH who have a negative initial catheter angiogram, demonstrating a causative cerebral aneurysm in 9.3% of patients.
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Affiliation(s)
- Josser E Delgado Almandoz
- Division of Neuroradiology, Mallinckrodt Institute of Radiology, Washington University Schoolof Medicine, Saint Louis, Missouri, USA.
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Abstract
There is a growing development of continuous EEG monitoring (cEEG) in the intensive care unit (ICU) management of neurological patients. Its main objective is the detection of epileptic seizures or status epilepticus because the sensitivity of standard short-duration EEG recording in the ICU is poor. The aim of monitoring is to allow rapid recognition and treatment of epileptic complications in order to decrease secondary insults to the brain and improve outcome. Several studies have demonstrated that a large proportion of patients has epileptic crisis after subarachnoid haemorrhage, stroke or brain trauma, without any clinical manifestation. The EEG feature has also demonstrated a prognosis value but its value for clinical management needs further studies. Another application of EEG in the ICU is monitoring depth of anaesthesia or barbiturate treatment. Due to artifacts contamination, this is possible only in deeply sedated of paralyzed patients. The impact or cEEG monitoring on clinical management and its indications have to be further defined.
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47
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Delgado Almandoz JE, Jagadeesan BD, Refai D, Moran CJ, Cross DT, Chicoine MR, Rich KM, Diringer MN, Dacey RG, Derdeyn CP, Zipfel GJ. Diagnostic yield of repeat catheter angiography in patients with catheter and computed tomography angiography negative subarachnoid hemorrhage. Neurosurgery 2012; 70:1135-42. [PMID: 22105208 DOI: 10.1227/neu.0b013e318242575e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The yield of repeat catheter angiography in patients with subarachnoid hemorrhage (SAH) who have negative initial catheter and computed tomography (CT) angiograms is not well understood. OBJECTIVE To determine the yield of repeat catheter angiography in a prospective cohort of patients with SAH and negative initial catheter and CT angiograms. METHODS From January 1, 2005, until September 1, 2010, we instituted a prospective protocol in which patients with SAH documented by noncontrast CT (NCCT) or cerebrospinal fluid (CSF) xanthochromia and negative initial catheter and CT angiograms were evaluated with repeat catheter angiography 7 days and 3 months after presentation to assess for causative vascular abnormalities. RESULTS Seventy-two patients were included, with a mean age of 53.1 years (median, 53.5 years; range, 19-88 years). Forty-six patients were female (63.9%) and 26 male (36.1%). Thirty-nine patients had nonperimesencephalic SAH (54.2%), 29 patients had perimesencephalic SAH (40.3%), and 4 patients had CSF xanthochromia (5.5%). The first repeat catheter angiogram performed 7 days after presentation demonstrated a causative vascular abnormality in 3 patients (yield of 4.2%), 2 of which had nonperimesencephalic SAH (yield of 5.1%), and 1 had perimesencephalic SAH (yield of 3.4%). The second repeat catheter angiogram performed in 43 patients (59.7%) did not demonstrate any causative vascular abnormalities. No causative abnormalities were found in patients with CSF xanthochromia. CONCLUSION Repeat catheter angiography performed 7 days after presentation is valuable in the evaluation of patients with SAH who have negative initial catheter and CT angiograms, demonstrating a causative vascular abnormality in 4.2% of patients.
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Affiliation(s)
- Josser E Delgado Almandoz
- Division of Neuroradiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, Missouri, USA.
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Navi BB, Kamel H, McCulloch CE, Nakagawa K, Naravetla B, Moheet AM, Wong C, Johnston SC, Hemphill JC, Smith WS. Accuracy of Neurovascular Fellows' Prognostication of Outcome After Subarachnoid Hemorrhage. Stroke 2012; 43:702-7. [DOI: 10.1161/strokeaha.111.639161] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Purpose—
The purpose of this study was to determine the accuracy and optimal timing of physician prognostication in patients with subarachnoid hemorrhage, a prototypical neurological disease characterized by variable outcomes and frequent disability.
Methods—
From October 2009 to April 2010, treating neurologists at a tertiary care academic medical center made daily predictions of the modified Rankin Scale at 6 months for consecutive patients with subarachnoid hemorrhage. Actual functional outcomes at 6 months were determined by phone interview and dichotomized into good (modified Rankin Scale 0–2) and poor (modified Rankin Scale 3–6) outcomes. Descriptive statistics were used to assess the accuracy of prognostications. Multiple logistic regression and generalized estimating equations were used to assess changes in prognostication accuracy over time and the relationship between prognostication accuracy and clinical factors.
Results—
Physicians made 648 prognostications for 66 patients. Overall accuracy ranged from 78% to 88%. Among patients predicted to have a good outcome, 81% (95% CI, 71%–92%) actually had a good outcome, whereas 88% (95% CI, 77%–99%) of patients predicted to do poorly had poor outcomes. No significant trends were seen in prognostication accuracy over time during the hospital course (
P
=0.72). Increasing age, infection, mechanical ventilation, hydrocephalus, and seizures all significantly worsened physician accuracy.
Conclusions—
Neurologists were generally but not perfectly accurate in their prognostications of functional outcomes. The accuracy of prognoses did not correlate with the hospital day on which they were made but was affected by clinical factors that can cloud the neurological examination.
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Affiliation(s)
- Babak B. Navi
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Hooman Kamel
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Charles E. McCulloch
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Kazuma Nakagawa
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Bharath Naravetla
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Asma M. Moheet
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Christine Wong
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - S. Claiborne Johnston
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - J. Claude Hemphill
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
| | - Wade S. Smith
- From the Department of Neurology and Neuroscience (B.B.N., H.K.), Weill Cornell Medical College, New York, NY; the Departments of Epidemiology and Biostatistics (C.E.M., S.C.J.) and Neurology (B.N., C.W., S.C.J., J.C.H., W.S.S.), University of California, San Francisco, CA; the Neuroscience Institute (K.N.), The Queen's Medical Center, Honolulu, HI; and the Departments of Neurology and Neurosurgery (A.M.M.), Cedars-Sinai Medical Center, Los Angeles, CA
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49
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Edvinsson LIH, Povlsen GK. Vascular plasticity in cerebrovascular disorders. J Cereb Blood Flow Metab 2011; 31:1554-71. [PMID: 21559027 PMCID: PMC3137480 DOI: 10.1038/jcbfm.2011.70] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 04/06/2011] [Accepted: 04/06/2011] [Indexed: 12/31/2022]
Abstract
Cerebral ischemia remains a major cause of morbidity and mortality with little advancement in subacute treatment options. This review aims to cover and discuss novel insight obtained during the last decade into plastic changes in the vasoconstrictor receptor profiles of cerebral arteries and microvessels that takes place after different types of stroke. Receptors like the endothelin type B, angiotensin type 1, and 5-hydroxytryptamine type 1B/1D receptors are upregulated in the smooth muscle layer of cerebral arteries after different types of ischemic stroke as well as after subarachnoid hemorrhage, yielding rather dramatic changes in the contractility of the vessels. Some of the signal transduction processes mediating this receptor upregulation have been elucidated. In particular the extracellular regulated kinase 1/2 pathway, which is activated early in the process, has proven to be a promising therapeutic target for prevention of vasoconstrictor receptor upregulation after stroke. Together, those findings provide new perspectives on the pathophysiology of ischemic stroke and point toward a novel way of reducing vasoconstriction, neuronal cell death, and thus neurologic deficits after stroke.
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Affiliation(s)
- Lars I H Edvinsson
- Department of Clinical Experimental Research, Copenhagen University, Glostrup Hospital Research Park, Copenhagen, Denmark.
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Zhou Y, Martin RD, Zhang JH. Advances in experimental subarachnoid hemorrhage. ACTA NEUROCHIRURGICA. SUPPLEMENT 2011; 110:15-21. [PMID: 21116908 DOI: 10.1007/978-3-7091-0353-1_3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Subarachnoid hemorrhage (SAH) remains to be a devastating disease with high mortality and morbidity. Two major areas are becoming the focus of the research interest of SAH: these are cerebral vasospasm (CVS) and early brain injury (EBI). This mini review will provide a broad summary of the major advances in experimental SAH during the last 3 years. Treatments interfering with nitric oxide (NO)- or endothelin-pathways continue to show antispasmotic effects in experimental SAH. HIF 1 may play both a detrimental and beneficial role in the setting of SAH, depending on its activation stage. Inflammation and oxidative stress contribute to the pathophysiology of both CVS and EBI. Apoptosis, a major component of EBI after SAH, also underlie the etiology of CVS. Since we recognize now that CVS and EBI are the two major contributors to the significant mortality and morbidity associated with SAH, ongoing research will continue to elucidate the underlying pathophysiological pathways and treatment strategies targeting both CVS and EBI may be more successful and improve outcome of patients with SAH.
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Affiliation(s)
- Yilin Zhou
- Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
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