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Sha Z, Wu D, Dong S, Liu T, Wu C, Lv C, Liu M, Jiang W, Yuan J, Nie M, Gao C, Liu F, Zhang X, Jiang R. The value of computed tomography texture analysis in identifying chronic subdural hematoma patients with a good response to polytherapy. Sci Rep 2024; 14:3559. [PMID: 38347043 PMCID: PMC10861511 DOI: 10.1038/s41598-024-53376-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/31/2024] [Indexed: 02/15/2024] Open
Abstract
This study aimed to investigate the predictive factors of therapeutic efficacy for chronic subdural hematoma (CSDH) patients receiving atorvastatin combined with dexamethasone therapy by using clinical imaging characteristics in conjunction with computed tomography (CT) texture analysis (CTTA). Clinical imaging characteristics and CT texture parameters at admission were retrospectively investigated in 141 CSDH patients who received atorvastatin combined with dexamethasone therapy from June 2019 to December 2022. The patients were divided into a training set (n = 81) and a validation set (n = 60). Patients in the training data were divided into two groups based on the effectiveness of the treatment. Univariate and multivariate analyses were performed to assess the potential factors that could indicate the prognosis of CSDH patients in the training set. The receiver operating characteristic (ROC) curve was used to analyze the predictive efficacy of the significant factors in predicting the prognosis of CSDH patients and was validated using a validation set. The multivariate analysis showed that the hematoma density to brain parenchyma density ratio, singal min (minimum) and singal standard deviation of the pixel distribution histogram, and inhomogeneity were independent predictors for the prognosis of CSDH patients based on atorvastatin and dexamethasone therapy. The area under the ROC curve between the two groups was between 0.716 and 0.806. As determined by significant factors, the validation's accuracy range was 0.816 to 0.952. Clinical imaging characteristics in conjunction with CTTA could aid in distinguishing patients with CSDH who responded well to atorvastatin combined with dexamethasone.
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Affiliation(s)
- Zhuang Sha
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Di Wu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Shiying Dong
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Tao Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Chenrui Wu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Chuanxiang Lv
- Department of Neurosurgery, The First Hospital of Jilin University, Changchun, China
| | - Mingqi Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Weiwei Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Jiangyuan Yuan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Meng Nie
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Chuang Gao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Feng Liu
- Department of Radiology and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin, China
| | - Xinjie Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China.
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury, Neuro-Repair, and Regeneration in the Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China.
- State Key Laboratory of Experimental Hematology, Tianjin Medical University General Hospital, Tianjin, China.
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Liu T, Zhao Z, Huang J, Zhu X, Chen W, Lin K, Yu Y, Li Z, Fan Y, Liu M, Nie M, Liu X, Gao C, Quan W, Qian Y, Wu C, Yuan J, Wu D, Lv C, Dong S, Mi L, Tian Y, Tian Y, Zhang J, Jiang R. Multimodality management for chronic subdural hematoma in China: protocol and characteristics of an ambidirectional, nationwide, multicenter registry study. Chin Neurosurg J 2024; 10:4. [PMID: 38273380 PMCID: PMC10809648 DOI: 10.1186/s41016-024-00356-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Despite its prevalence, there is ongoing debate regarding the optimal management strategy for chronic subdural hematoma (CSDH), reflecting the variability in clinical presentation and treatment outcomes. This ambidirectional, nationwide, multicenter registry study aims to assess the efficacy and safety of multimodality treatment approaches for CSDH in the Chinese population. METHODS/DESIGN A multicenter cohort of CSDH patients from 59 participating hospitals in mainland China was enrolled in this study. The treatment modalities encompassed a range of options and baseline demographics, clinical characteristics, radiographic findings, and surgical techniques were documented. Clinical outcomes, including hematoma resolution, recurrence rates, neurological status, and complications, were assessed at regular intervals during treatment, 3 months, 6 months, 1 year, and 2 years follow-up. RESULT Between March 2022 and August 2023, a comprehensive cohort comprising 2173 individuals who met the criterion was assembled across 59 participating clinical sites. Of those patients, 81.1% were male, exhibiting an average age of 70.12 ± 14.53 years. A historical record of trauma was documented in 48.0% of cases, while headache constituted the predominant clinical presentation in 58.1% of patients. The foremost surgical modality employed was the burr hole (61.3%), with conservative management accounting for 25.6% of cases. Notably, a favorable clinical prognosis was observed in 88.9% of CSDH patients at 3 months, and the recurrence rate was found to be 2.4%. CONCLUSION This registry study provides critical insights into the multimodality treatment of CSDH in China, offering a foundation for advancing clinical practices, optimizing patient management, and ultimately, improving the quality of life for individuals suffering from this challenging neurosurgical condition. TRIAL REGISTRATION ChiCTR2200057179.
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Affiliation(s)
- Tao Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhihao Zhao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Jinhao Huang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Xide Zhu
- Department of Neurosurgery, Linyi People's Hospital, Shandong, China
| | - Weiliang Chen
- Department of Neurosurgery, Haining People's Hospital, Zhejiang, China
| | - Kun Lin
- Department of Neurosurgery, Fujian Provincial Hospital, Fujian, China
| | - Yunhu Yu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
- Department of Clinical Research Center for Neurological Disease, the People's Hospital of HongHuaGang District of ZunYi, Guizhou, China
| | - Zhanying Li
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
- Department of Neurosurgery, Kailuan General Hospital, Hebei, China
| | - Yibing Fan
- Department of Neurosurgery, Tianjin First Central Hospital, Tianjin, China
| | - Mingqi Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Meng Nie
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Xuanhui Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Chuang Gao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Wei Quan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Yu Qian
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Chenrui Wu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Jiangyuan Yuan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Di Wu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Chuanxiang Lv
- Department of Neurosurgery, The First Hospital of Jilin University, Changchun, China
| | - Shiying Dong
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Liang Mi
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Yu Tian
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China
| | - Ye Tian
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China.
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China.
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
- Ministry of Education, Tianjin Neurological Institute, Key Laboratory of Post Neuro-injury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Tianjin, China.
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Bumpetch D, Sitthinamsuwan B, Nunta-aree S. A Prospective Study of the Effect and Safety of Atorvastatin on the Recurrence of Chronic Subdural Hematoma after Burr Hole Surgery. Asian J Neurosurg 2023; 18:567-572. [PMID: 38152511 PMCID: PMC10749861 DOI: 10.1055/s-0043-1771372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023] Open
Abstract
Introduction Chronic subdural hematoma (CSDH) is a common neurosurgical condition. Recent studies showed efficacy of atorvastatin in reducing the requirement of surgical treatment. This study aimed to evaluate the efficacy and safety of atorvastatin in reducing the recurrence of CSDH after burr hole surgery. Methods This prospective study included patients with CSDH who underwent burr hole surgery. Atorvastatin at 20 mg per day was administered to all patients for 4 weeks postoperatively. The major outcome was the recurrence rate of CSDH at 8 weeks following the operation. Results Seventy-three patients who completed the 4-week course of atorvastatin were included. The mean age was 73.9 years. The most common cause of CSDH was falling. The mean hematoma volume was 106.3 mL. There was no adverse effect of atorvastatin in all of 73 patients. During the 8-week postoperative period, recurrent CSDH was found in 2 of 73 (2.7%) patients. In a comparison of the recurrence rate of CSDH between patients with use of atorvastatin from the present and previous studies (2.6-4.8%), and patients without use of atorvastatin from previous studies (9.8-19%), a marked reduction in recurrent CSDH after burr hole surgery was found in patients with use of atorvastatin. Conclusion An administration of atorvastatin of 20 mg daily for 4 weeks following burr hole surgery is safe and may be helpful in reducing the recurrence rate of CSDH after burr hole surgery.
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Affiliation(s)
- Duangkamol Bumpetch
- Division of Neurosurgery, Department of Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Department of Surgery, Nan Hospital, Nan, Thailand
| | - Bunpot Sitthinamsuwan
- Division of Neurosurgery, Department of Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sarun Nunta-aree
- Division of Neurosurgery, Department of Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Wang D, Tian Y, Wei H, Gao C, Fan Y, Yang G, Quan W, Huang J, Yue S, Zhang J, Jiang R. Risk Factor Analysis of the Conservative Treatment in Chronic Subdural Hematomas: A Substudy of the ATOCH Trial. Adv Ther 2022; 39:1630-1641. [PMID: 35133631 DOI: 10.1007/s12325-022-02057-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 01/21/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The objective of the study was to analyze the risk factors for worsening of the disease progression in patients with chronic subdural hematomas (CSDH) during wait-and-observation treatment regimen and conservative treatment with atorvastatin. METHODS A total of 196 patients with CSDH were recruited (98 in the atorvastatin group and 98 in the blank placebo group). Receiver operating characteristic (ROC) curve analysis was used to identify the optimal cutoff for the hematoma volume by testing surgical and nonsurgical outcomes. Other measures, including univariate and multivariate analyses, were performed to identify the potential significant factors indicative of the outcome of therapeutic efficacy of conservative treatment through the characteristics of the baseline indicators at enrollment. RESULTS Over a median treatment duration of 2 months, lower total cholesterol, higher hematoma volume, and more midline shift were independent risk factors for worse outcomes of atorvastatin treatment for CSDH, and only a higher hematoma volume was an independent risk factor for spontaneous absorption in the placebo group. ROC analysis of all of the data showed that the optimal threshold of hematoma volume was 68.5 ml (sensitivity 73.5%, specificity 74%) in response to the greatest chance of switching to surgery. CONCLUSIONS Critical independent predictors of atorvastatin monotherapy treatment success included higher total cholesterol, lower hematoma volume, and less midline shift in atorvastatin monotherapy, and higher hematoma volume was the only independent risk factor in close follow-up observation patients without any pharmacotherapy. Initial hematoma volume more than 68.5 ml may help clinicians to determine individual risk assessments and to make optimal treatment decisions. TRIAL REGISTRATION http://www. CLINICALTRIALS gov . Identifier NCT02024373.
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Affiliation(s)
- Dong Wang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Ye Tian
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Tianjin, China
| | - Huijie Wei
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Chuang Gao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Yueshan Fan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Guili Yang
- Tianjin Neurological Institute, Tianjin, China
| | - Wei Quan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Jinhao Huang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Shuyuan Yue
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China.
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Jiang RC, Wang D, Zhao SG, Wang RZ, Kang DZ, Zhu XG, Zhao ZM, Wei JJ, Huang Y, Qu Y, Sun XC, Ji HM, Jiang XC, Liu JF, De Zhu X, Wang JJ, Tian Y, Gao C, Wei HJ, Zhang S, Quan W, Yue SY, Lei P, Li X, Song LL, Anderson CS, Zhang JN. Atorvastatin combined with dexamethasone in chronic subdural haematoma (ATOCH II): study protocol for a randomized controlled trial. Trials 2021; 22:905. [PMID: 34895306 PMCID: PMC8666019 DOI: 10.1186/s13063-021-05871-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 11/24/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chronic subdural haematoma (CSDH) is a common condition in the elderly that often requires neurosurgical management. For small CSDH, evidence has emerged that statins may reduce haematoma volume and improve outcomes, presumably by reducing local inflammation and promoting vascular repair. We wish to extend this evidence in a study that aims to determine the efficacy and safety of atorvastatin combined with low-dose dexamethasone in patients with CSDH. METHODS The second ATorvastatin On Chronic subdural Hematoma (ATOCH-II) study is a multi-centre, randomized, placebo-controlled, double-blind trial which aims to enrol 240 adult patients with a conservative therapeutic indication for CSDH, randomly allocated to standard treatment with atorvastatin 20 mg combined with low-dose dexamethasone (or matching placebos) daily for 28 days, and with 152 days of follow-up. The primary outcome is a composite good outcome defined by any reduction from baseline in haematoma volume and survival free of surgery at 28 days. Secondary outcomes include functional outcome on the modified Rankin scale (mRS) and modified Barthel Index at 28 days, surgical transition and reduction in haematoma volumes at 14, 28 and 90 days. DISCUSSION This multi-centre clinical trial aims to provide high-quality evidence on the efficacy and safety of the combined treatment of atorvastatin and low-dose dexamethasone to reduce inflammation and enhance angiogenesis in CSDH. TRIAL REGISTRATION ChiCTR, ChiCTR1900021659 . Registered on 3 March 2019, http://www.chictr.org.cn/showproj.aspx?proj=36157 .
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Affiliation(s)
- Rong Cai Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Dong Wang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Shi Guang Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, No. 23 Youzheng Street, Nangang District, Harbin, Heilongjiang Province, 150001, People's Republic of China
| | - Ren Zhi Wang
- Department of Neurosurgery, Peking Union Medical College Hospital, No. 41 Damucang Street, Xicheng District, Beijing, 100032, People's Republic of China
| | - De Zhi Kang
- Department of Neurosurgery, The First Affiliated Hospital of Fujian Medical University, No. 20 Chazhong Road, Fuzhou, Fujian Province, 350005, People's Republic of China
| | - Xin Gen Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, Jiangxi Province, 330006, People's Republic of China
| | - Zong Mao Zhao
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang, Hebei Province, 050000, People's Republic of China
| | - Jun Ji Wei
- Department of Neurosurgery, Peking Union Medical College Hospital, No. 41 Damucang Street, Xicheng District, Beijing, 100032, People's Republic of China
| | - Ying Huang
- Department of Neurosurgery, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Tianjin, 300350, People's Republic of China
| | - Yan Qu
- Department of Neurosurgery, Tangdu Hospital, The Second Affiliated Hospital of Air Force Medical University, No. 1 Xinsi Road, Xian, Shanxi Province, 710038, People's Republic of China
| | - Xiao Chuan Sun
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Chongqing, 630014, People's Republic of China
| | - Hong Ming Ji
- Department of Neurosurgery, Shanxi Provincial People's Hospital, No. 29 Shuangtasi Road, Taiyuan, Shanxi Province, 030012, People's Republic of China
| | - Xiao Chun Jiang
- Department of Neurosurgery, Yejishan Hospital of Wannan Medical College, No. 2 West Zheshan Road, Wuhu, Anhui Province, 241001, People's Republic of China
| | - Jin Fang Liu
- Department of Neurosurgery, Xiangya Hospital Central South University, No. 87 Xiangya Road, Changsha, Hunan, 410008, People's Republic of China
| | - Xi De Zhu
- Department of Neurosurgery, Linyi People's Hospital, No. 27 Jiefang Road, Linyi, Shandong Province, 276003, People's Republic of China
| | - Jian Jun Wang
- Department of Neurosurgery, Ordos Central Hospital, No. 23 Yijinhuoluo West Street, Ordos, Inner Mongolia Province, 017000, People's Republic of China
| | - Ye Tian
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Chuang Gao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Hui Jie Wei
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Shu Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Wei Quan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Shu Yuan Yue
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Ping Lei
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China
| | - Xian Li
- The George Institute China at Peking University Health Science Center, Beijing, People's Republic of China.,The George Institute for Global Health, Faculty of Medicine, UNSW, PO Box M201, Missenden Rd, Sydney, NSW, 2050, Australia
| | - Li Li Song
- The George Institute China at Peking University Health Science Center, Beijing, People's Republic of China.,The George Institute for Global Health, Faculty of Medicine, UNSW, PO Box M201, Missenden Rd, Sydney, NSW, 2050, Australia
| | - Craig S Anderson
- The George Institute China at Peking University Health Science Center, Beijing, People's Republic of China. .,The George Institute for Global Health, Faculty of Medicine, UNSW, PO Box M201, Missenden Rd, Sydney, NSW, 2050, Australia. .,Department of Neurology, Royal Prince Alfred Hospital, Sydney, Australia.
| | - Jian Ning Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, No. 154 Anshan Road, Tianjin, 300052, People's Republic of China.
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Yang L, Li N, Yang L, Wang D, Qiang S, Zhao Z. Atorvastatin-Induced Absorption of Chronic Subdural Hematoma Is Partially Attributed to the Polarization of Macrophages. J Mol Neurosci 2021; 72:565-573. [PMID: 34569007 DOI: 10.1007/s12031-021-01910-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 09/02/2021] [Indexed: 11/25/2022]
Abstract
As one of the main types of secondary craniocerebral injury, the onset, progression, and prognosis of chronic subdural hematoma (CSDH) are closely related to the local inflammation of intracranial hematoma. Atorvastatin is reported to be effective in the conservative treatment of CSDH. This study aimed to clarify whether atorvastatin regulated the inflammatory responses in CSDH by interfering with the function of macrophages. The rat CSDH model was prepared by repeated intracranial blood injection with velocity gradient, and MRI was applied to calculate the intracranial hematoma volume. Changes in rat nerve functions were evaluated by foot-fault and Morris water maze tests. Flow cytometry was applied to detect the number of total macrophages and the percentage of M1 or M2 macrophages. The expression of inflammatory factors was examined by ELISA and western blot. Western bolt was applied to detect the expression of proteins involved in the colony-stimulating factor 1 receptor (CSF-1R) signaling pathway. Our results showed that atorvastatin significantly accelerated the absorption of hematoma and improved the nerve functions of CSDH rats. In addition, atorvastatin treatment effectively suppressed the expression of TNF-α, IL-6, and IL-8 and promoted the expression of IL-10. The total number of macrophages was decreased, and the percentage of M2 macrophages was increased in the intracranial hematoma following atorvastatin treatment. Furthermore, atorvastatin increased the levels of M2-related genes and surface markers in BMDMs stimulated by lipopolysaccharides and IFNγ, and activated the CSF-1R signaling pathway. In conclusion, our study shows that atorvastatin could alleviate the symptoms of CSDH and promote hematoma ablation by polarizing macrophages to M2 type and regulating the inflammatory responses.
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Affiliation(s)
- Liang Yang
- Department of Neurosurgery, the Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang 050000, Hebei, China
| | - Nan Li
- Department of Gynecology, the Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang 050000, Hebei, China
| | - Lijun Yang
- Department of Neurosurgery, the Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang 050000, Hebei, China
| | - Dong Wang
- Department of Neurosurgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Tianjin, 300052, China
| | - Shuke Qiang
- Department of Neurosurgery, the Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang 050000, Hebei, China
| | - Zongmao Zhao
- Department of Neurosurgery, the Second Hospital of Hebei Medical University, No. 215 Heping West Road, Shijiazhuang 050000, Hebei, China.
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Huang J, Gao C, Dong J, Zhang J, Jiang R. Drug treatment of chronic subdural hematoma. Expert Opin Pharmacother 2020; 21:435-444. [PMID: 31957506 DOI: 10.1080/14656566.2020.1713095] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jinhao Huang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Chuang Gao
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Jingfei Dong
- Division of Hematology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and Regeneration in Central Nervous System, Tianjin Medical University General Hospital, Ministry of Education, Tianjin, China
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8
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Du B, Xu J, Hu J, Zhong X, Liang J, Lei P, Wang H, Li W, Peng Y, Shan A, Zhang Y. A Clinical Study of the Intra-Neuroendoscopic Technique for the Treatment of Subacute-Chronic and Chronic Septal Subdural Hematoma. Front Neurol 2020; 10:1408. [PMID: 32010057 PMCID: PMC6979069 DOI: 10.3389/fneur.2019.01408] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/23/2019] [Indexed: 11/17/2022] Open
Abstract
Objective: The surgical technique, safety, efficacy, and clinical application value of the intra-neuroendoscopic technique (INET) for the treatment of subacute-chronic and chronic septal subdural hematoma was investigated based on the structure and pathological features of the hematoma wall, and the critical factors of hematoma growth and recurrence were determined, in order to provide reference for clinical drug treatment. Methods: This was non-randomized concurrent control study. A total of 94 patients who met the inclusion criteria were recruited between May 2015 and February 2019 and were divided into the INET treatment group (INET group, 45 cases) and the burr hole drainage (BHD) treatment group (control group, 49 cases). The hematoma fluid components and the morphological structure and pathological characteristics of the hematoma wall were analyzed, and the surgical duration, subdural drainage tube (SDT) placement duration, intracranial infection rate, Bender grade at the 1 month post-operative follow-up and hematoma recurrence rate within the 6 months of post-operative follow-up were compared between the two groups. A multiple logistic regression model was established to analyze the risk factors associated with recurrence within 6 months. Results: Intraoperative endoscopy showed that the adhesion bands that formed early in the hematoma cavity were strip-like and that those that formed late were lock-column-like. The hematoma cavity was divided into different-sized chambers with by these strips/columns. Pathological sections of cyst wall reveled angiogenesis inside the cyst and mucus-like changes, rupture and hemorrhage in the vascular wall. Obvious inflammatory cell infiltration and fibrous connective tissue hyperplasia were observed in the cyst wall. The osmotic pressure of the hematoma fluid was not significantly different from that of the peripheral venous blood [(296.7 ± 10.3) mOsm/kg vs. (291.5 ± 12.4) mOsm/kg, p = 0.68]. However, the D-dimer contents which reflect the severity of fibrinolysis in the hematoma and the proinflammatory cytokine interleukin 6 (IL-6) were significantly higher in the hematoma fluid than in the peripheral venous blood. The surgery duration for the INET group was significantly longer than that for the control group [(60.4 ± 10.6) min vs. (44.1 ± 9.8) min, p = 0.00], but both the hematoma recurrence rate within 6 months of post-operative follow-up (4.4 vs. 24.5%, p = 0.00) and the SDT placement duration [(2.1 ± 0.6) d vs. (3.9 ± 0.7) d, p = 0.00] for the INET group were both lower than those for the control group. The intracranial infection rate did not differ significantly between the two groups (4.4 vs. 10.2%, p = 0.50). The overall effective rate of the Bender grade at 1 month of follow-up did not differ significantly between the two groups (95.6 vs. 87.8%, p = 0.32), but the proportion of patients who recovered to Bender grade 0 with no symptoms was significantly higher in the INET group than in the control group (86.7 vs. 67.3%, p = 0.03). Multiple logistic regression analysis showed that INET surgery [odds ratio (OR) 3.71, 95% confidence interval (CI) 1.31–9.62, p = 0.02], age of 65 years or younger (OR 1.51, 95% CI 1.05–2.87, p = 0.03) and unilateral subdural hematoma (OR 1.76, 95% CI 1.05–3.41, p = 0.02) were independent factors that reduced the post-operative recurrence rate. Conclusion: The INET surgical plan based on the structure and pathological features of the subacute-chronic and chronic subdural hematoma wall can reduce the recurrence rate and improve the clinical prognosis. Trial registration:ClinicalTrials.gov, NCT02515903. Registered 5 August, 2015.
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Affiliation(s)
- Bo Du
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Jianzhong Xu
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Jintao Hu
- Department of Pathology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Xianliang Zhong
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Jian Liang
- Department of Neurosurgery, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Pengfei Lei
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Hao Wang
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Weichun Li
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Yuping Peng
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Aijun Shan
- Department of Emergency, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Yujuan Zhang
- Department of Ultrasound, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
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Jiang R, Zhao S, Wang R, Feng H, Zhang J, Li X, Mao Y, Yuan X, Fei Z, Zhao Y, Yu X, Poon WS, Zhu X, Liu N, Kang D, Sun T, Jiao B, Liu X, Yu R, Zhang J, Gao G, Hao J, Su N, Yin G, Zhu X, Lu Y, Wei J, Hu J, Hu R, Li J, Wang D, Wei H, Tian Y, Lei P, Dong JF, Zhang J. Safety and Efficacy of Atorvastatin for Chronic Subdural Hematoma in Chinese Patients: A Randomized ClinicalTrial. JAMA Neurol 2019; 75:1338-1346. [PMID: 30073290 DOI: 10.1001/jamaneurol.2018.2030] [Citation(s) in RCA: 153] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Importance Chronic subdural hematoma (CSDH) is a trauma-associated condition commonly found in elderly patients. Surgery is currently the treatment of choice, but it carries a significant risk of recurrence and death. Nonsurgical treatments remain limited and ineffective. Our recent studies suggest that atorvastatin reduces hematomas and improves the clinical outcomes of patients with CSDH. Objective To investigate the safety and therapeutic efficacy of atorvastatin to nonsurgically treat patients with CSDH. Design, Setting, and Participants The Effect of Atorvastatin on Chronic Subdural Hematoma (ATOCH) randomized, placebo-controlled, double-blind phase II clinical trial was conducted in multiple centers in China from February 2014 to November 2015. For this trial, we approached 254 patients with CSDH who received a diagnosis via a computed tomography scan; of these, 200 (78.7%) were enrolled because 23 patients (9.1%) refused to participate and 31 (12.2%) were disqualified. Interventions Patients were randomly assigned to receive either 20 mg of atorvastatin or placebo daily for 8 weeks and were followed up for an additional 16 weeks. Main Outcomes and Measures The primary outcome was change in hematoma volume (HV) by computed tomography after 8 weeks of treatment. The secondary outcomes included HV measured at the 4th, 12th, and 24th weeks and neurological function that was evaluated using the Markwalder grading scale/Glasgow Coma Scale and the Barthel Index at the 8th week. Results One hundred ninety-six patients received treatment (169 men [86.2%]; median [SD] age, 63.6 [14.2] years). The baseline HV and clinical presentations were similar between patients who were taking atorvastatin (98 [50%]) and the placebo (98 [50%]). After 8 weeks, the HV reduction in patients who were taking atorvastatin was 12.55 mL more than those taking the placebo (95% CI, 0.9-23.9 mL; P = .003). Forty-five patients (45.9%) who were taking atorvastatin significantly improved their neurological function, but only 28 (28.6%) who were taking the placebo did, resulting in an adjusted odds ratio of 1.957 for clinical improvements (95% CI, 1.07-3.58; P = .03). Eleven patients (11.2%) who were taking atorvastatin and 23 (23.5%) who were taking the placebo underwent surgery during the trial for an enlarging hematoma and/or a deteriorating clinical condition (hazard ratio, 0.47; 95% CI, 0.24-0.92; P = .03). No significant adverse events were reported. Conclusions and Relevance Atorvastatin may be a safe and efficacious nonsurgical alternative for treating patients with CSDH. Trial Registration ClinicalTrials.gov Identifier: NCT02024373.
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Affiliation(s)
- Rongcai Jiang
- Key Laboratory of Post-Neurotrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education in China and Tianjin, Tianjin Neurological Institute, Tianjin, China
| | - Shiguang Zhao
- Department of Neurosurgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Renzhi Wang
- Department of Neurosurgery, Peking Union Medical College Hospital, Beijing, China
| | - Hua Feng
- Department of Neurosurgery, Southwest Hospital, Chongqing, China
| | - Jianmin Zhang
- Department of Neurosurgery, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xingang Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital Fudan University, Shanghai, China
| | - Xianrui Yuan
- Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha, China
| | - Zhou Fei
- Department of Neurosurgery, Xijing Hospital, Xian, China
| | - Yuanli Zhao
- Department of Neurosurgery, Beijing TianTan Hospital, the Capital Medical University, Beijing, China
| | - Xinguang Yu
- Department of Neurosurgery, General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Wai Sang Poon
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, Hong Kong
| | - Xide Zhu
- Department of Neurosurgery, Linyi People's Hospital, Linyi, China
| | - Ning Liu
- Department of Neurosurgery, Jiangsu Provincial Hospital, Nanjing Medical University First Affiliated Hospital, Nanjing, China
| | - Dezhi Kang
- Department of Neurosurgery, First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Tao Sun
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Baohua Jiao
- Department of Neurosurgery, Second Affiliated Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xianzhi Liu
- Department of Neurosurgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Rutong Yu
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou, China
| | - Junyi Zhang
- Department of Neurosurgery, Central Hospital of Erdos, Erdos, China
| | - Guodong Gao
- Department of Neurosurgery, Xi'an Tangdu Hospital of the fourth Military Medical University, Xian, China
| | - Jiehe Hao
- Department of Neurosurgery, First Affiliated Hospital of Shanxi Medical University, Taiyuan, China
| | - Ning Su
- Department of Neurosurgery, Provincial People's Hospital of Inner Mongolia, Huhehot, China
| | - Gangfeng Yin
- Department of Neurosurgery, Cangzhou Central Hospital, Cangzhou, China
| | - Xingen Zhu
- Department of Neurosurgery, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yicheng Lu
- Department of Neurosurgery, Shanghai Changzheng Hospital, Shanghai, China
| | - Junji Wei
- Department of Neurosurgery, Peking Union Medical College Hospital, Beijing, China
| | - Jin Hu
- Department of Neurosurgery, Huashan Hospital Fudan University, Shanghai, China
| | - Rong Hu
- Department of Neurosurgery, Southwest Hospital, Chongqing, China
| | - Jianrong Li
- Department of Neurosurgery, 117th Hospital of Chinese People's Liberation Army, Hangzhou, China
| | - Dong Wang
- Key Laboratory of Post-Neurotrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education in China and Tianjin, Tianjin Neurological Institute, Tianjin, China
| | - Huijie Wei
- Key Laboratory of Post-Neurotrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education in China and Tianjin, Tianjin Neurological Institute, Tianjin, China
| | - Ye Tian
- Key Laboratory of Post-Neurotrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education in China and Tianjin, Tianjin Neurological Institute, Tianjin, China
| | - Ping Lei
- Laboratory of Neuro-Trauma and Neurodegenerative Disorders, Tianjin Geriatrics Institute, Tianjin Medical University General Hospital, Tianjin, China.,Department of Geriatrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Jing-Fei Dong
- Bloodworks Research Institute, Division of Hematology, Department of Medicine, University of Washington School of Medicine, Seattle
| | - Jianning Zhang
- Key Laboratory of Post-Neurotrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education in China and Tianjin, Tianjin Neurological Institute, Tianjin, China
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Quan W, Zhang Z, Li P, Tian Q, Huang J, Qian Y, Gao C, Su W, Wang Z, Zhang J, Zacharek A, Venkat P, Chen J, Jiang R. Role of Regulatory T cells in Atorvastatin Induced Absorption of Chronic Subdural Hematoma in Rats. Aging Dis 2019; 10:992-1002. [PMID: 31595197 PMCID: PMC6764728 DOI: 10.14336/ad.2018.0926] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/26/2018] [Indexed: 12/11/2022] Open
Abstract
Chronic subdural hematoma (CSDH) is a neurological disorder with a substantial recurrence rate. Atorvastatin is an effective drug for treating hyperlipidemia and known to improve neurological outcome after intracerebral hemorrhage. Previous studies have reported that atorvastatin treatment promotes hematoma absorption in CSDH, while the underlying mechanisms remain unclear. In this study, we investigated whether the anti-inflammatory effects of atorvastatin mediate absorption of CSDH. 144 male, Wistar rats (6 months old) were randomly divided into the following groups: 1) sham surgery control, 2) treatment: CSDH + atorvastatin, and 3) vehicle control: CSDH + saline. Atorvastatin or saline was orally administered daily for 19 days after CSDH procedure. A T2WI MRI was used to evaluate CSDH volume changes during the time course of the study. Flow cytometry and immunohistochemical staining were used to measure the number of regulatory T cells (Treg). ELISA was used to measure cytokine level in the hematoma border. Neurological function and cognitive outcome were evaluated using Foot-Fault test and Morris Water Maze test, respectively. When compared to saline treatment, atorvastatin treatment accelerated the absorption of CSDH as indicated by decreased hematoma volume in T2WI MRI data on 14th and 21st day after CSDH (P<0.05). Atorvastatin treatment significantly increased the number of Treg in circulation and hematoma border from 3rd to 21st day after CSDH. Atorvastatin treatment significantly decreased the levels of interleukins (IL-6 and IL-8) and tumor necrosis factor-α (TNF-α), but increased IL-10 level in the hematoma border. Atorvastatin treatment also improved neurological function and cognitive outcome compared to vehicle treated group. Atorvastatin induced anti-inflammatory responses and increased Treg in circulation and brain which may contribute to the accelerated CSDH absorption in rats.
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Affiliation(s)
- Wei Quan
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China
| | - Zhifei Zhang
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China.,3Department of Neurosurgery, The First Central Hospital of Tianjin, Tianjin, China
| | - Pan Li
- 4Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
| | - Qilong Tian
- 5Department of Neurology, Tangdu Hospital, Baqiao, Shanxi, China
| | - Jinhao Huang
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China
| | - Yu Qian
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China
| | - Chuang Gao
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China
| | - Wanqiang Su
- 6Department of Neurosurgery, The First Central Hospital of Baoding City, Lianchi, Baoding, China
| | - Zengguang Wang
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China
| | - Jianning Zhang
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China.,2Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin Neurological Institute, Tianjin, China
| | - Alex Zacharek
- 7Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Poornima Venkat
- 7Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Jieli Chen
- 7Department of Neurology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Rongcai Jiang
- 1Department of Neurosurgery, General Hospital of Tianjin Medical University, Tianjin, China
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11
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Kumar A, Yadav YR. Letter to the Editor. Factors predicting reoperation for chronic subdural hematoma. J Neurosurg 2019; 130:1784-1786. [PMID: 30835698 DOI: 10.3171/2018.11.jns183191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Bah AB, Souaré IS, Diawara S, Boubane D, Saran KO. [Surgical treatment of chronic subdural hematoma in Guinea: Analysis of 22 cases at the Kipe hospital of Conakry]. Neurochirurgie 2019; 65:83-88. [PMID: 30953620 DOI: 10.1016/j.neuchi.2019.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 03/06/2019] [Accepted: 03/20/2019] [Indexed: 11/28/2022]
Abstract
OBJECTIVE We report the results of surgical treatment of chronic subdural hematoma in the Kipe Hospital in Conakry, Guinea, for the period July 2012 to November 2015. MATERIAL AND METHOD Clinical, radiological and therapeutic data from 22 cases were collected retrospectively and analyzed, with a mean follow-up of 61.6 days. Univariate analysis screened for factors for neurological outcome on the Markwalder Grading Scale (MGS; 0=normal to 4=coma). RESULTS Male-female sex ratio was 2.6:1. Mean age at diagnosis was 71.09±8 years, with peak incidence of CSDH in the 60-79 age group. Traumatic brain injury was identified as causal in 40.9% of cases. Burrhole trepanation was used in 86.36% of cases, under local anesthesia in 76%, and with postoperative drainage in all cases. No recurrences were recorded. At follow-up, mean postoperative MGS was 0.59 (up from 3.08 preoperatively); 54.54% of patients had normal neurological examination (grade 0). Age 60-79 years, time to diagnosis>12 weeks and preoperative MGS≥3 had significant negative impact on outcome (respective P-values: 0.03, 0.001, 0.001). CONCLUSION Our data were similar to those of the literature, but with longer time to diagnosis and poorer initial clinical status, with negative impact on clinical progression.
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Affiliation(s)
- A B Bah
- Service de neurochirurgie, hôpital de l'amitié sino-guinéenne de Kipé, Conakry, Guinée; Service de chirurgie générale, CHU Ignace Deen, Kaloum, Conakry, Guinée.
| | - I S Souaré
- Service de neurochirurgie, hôpital de l'amitié sino-guinéenne de Kipé, Conakry, Guinée
| | - S Diawara
- Service de neurochirurgie, hôpital de l'amitié sino-guinéenne de Kipé, Conakry, Guinée; Service de neurochirurgie, CHU Donka, Donka, Conakry, Guinée
| | - D Boubane
- Service de neurochirurgie, hôpital de l'amitié sino-guinéenne de Kipé, Conakry, Guinée
| | - K O Saran
- Service de neurochirurgie, hôpital de l'amitié sino-guinéenne de Kipé, Conakry, Guinée
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Abstract
PURPOSE OF REVIEW Subdural hematomas (SDH) represent common neurosurgical problem associated with significant morbidity, mortality, and high recurrence rates. SDH incidence increases with age; numbers of patients affected by SDH continue to rise with our aging population and increasing number of people taking antiplatelet agents or anticoagulation. Medical and surgical SDH management remains a subject of investigation. RECENT FINDINGS Initial management of patients with concern for altered mental status with or without trauma starts with Emergency Neurological Life Support (ENLS) guidelines, with a focus on maintaining ICP < 22 mmHg, CPP > 60 mmHg, MAP 80-110 mmHg, and PaO2 > 60 mmHg, followed by rapid sequence intubation if necessary, and expedited acquisition of imaging to identify a space-occupying lesion. Patients are administered anti-seizure medications, and their antiplatelet medications or anticoagulation may be reversed if neurosurgical interventions are anticipated, or until hemorrhage is stabilized on imaging. Medical SDH care focuses on (a) management of intracranial hypertension; (b) maintenance of adequate cerebral perfusion; (c) seizure prevention and treatment; (d) maintenance of normothermia, eucarbia, euglycemia, and euvolemia; and (e) early initiation of enteral feeding, mobilization, and physical therapy. Post-operatively, SDH patients require ICU level care and are co-managed by neurointensivists with expertise in treating increased intracranial pressure, seizures, and status epilepticus, as well as medical complications of critical illness. Here, we review various aspects of medical management with a brief overview of pertinent literature and clinical trials for patients diagnosed with SDH.
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Lu W, Wang H, Wu T, Sheng X, Ding Z, Xu G. Burr-Hole Craniostomy with T-Tube Drainage as Surgical Treatment for Chronic Subdural Hematoma. World Neurosurg 2018; 115:e756-e760. [PMID: 29729458 DOI: 10.1016/j.wneu.2018.04.168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 04/22/2018] [Accepted: 04/23/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVE We sought to investigate the effect of burr-hole craniostomy with T-tube drainage to treat chronic subdural hematoma (CSDH). METHODS Eighty-seven patients with CSDH who were recruited from January 2012 to June 2017 at the Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, were divided into 2 groups according to the method of drainage: T-tube drainage system (n = 45) and conventional subdural drainage system (n = 42). Retrospective analysis of clinical data and efficacy was performed between the 2 groups. RESULTS There were no significant differences in age, preoperative Markwalder grade scale, preoperative hematoma volume, hospitalization days, and discharge Markwalder grade scale between the 2 groups (P > 0.05). The incidence of postoperative complications and hematoma recurrence in the group of patients with T-tube drainage was significantly reduced when compared with conventional subdural drainage systems (P < 0.05). CONCLUSIONS Both methods were effective in the treatment of CSDH; however, we found a lower overall surgical complication rate following treatment with burr-hole craniostomy and T-tube drainage. This indicates that it may be a better therapeutic option for management of CSDH.
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Affiliation(s)
- Wenchao Lu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China.
| | - Hui Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Tao Wu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Xudong Sheng
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Zhibin Ding
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
| | - Gangzhu Xu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi Province, China
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15
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Abstract
Surgery is the standard treatment for chronic subdural hematoma (CSDH), one of the common problems in neurosurgical practice. Although medical treatment was used by some authors and found some positive results, it is not accepted by many authors. The aim of this review is to give overall view of the medical management of CSDH. Action of various drugs in the pathophysiological cascade of formation of CSDH was depicted. The review of literature is done under three headings – the primary medical treatment of CSDH, adjuvant medical treatment with surgery, and the treatment of the recurrence. Various classifications of CSDH and the factors influencing the outcome of medical treatment are discussed. There is a role of medical treatment in a selected group of patients with CSDH. Well-designed, multicenter, randomized controlled trials are required to define the indications and standard protocols for the medical treatment of CSDH.
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Affiliation(s)
- Amit Kumar Thotakura
- Department of Neurosurgery, NRI Academy of Sciences, Guntur, Andhra Pradesh, India
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16
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Correlation of vascular endothelial growth factor with magnetic resonance imaging in chronic subdural hematomas. J Neurol Sci 2017; 377:149-154. [DOI: 10.1016/j.jns.2017.04.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/31/2017] [Accepted: 04/10/2017] [Indexed: 02/02/2023]
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17
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Qiu S, Zhuo W, Sun C, Su Z, Yan A, Shen L. Effects of atorvastatin on chronic subdural hematoma: A systematic review. Medicine (Baltimore) 2017; 96:e7290. [PMID: 28658127 PMCID: PMC5500049 DOI: 10.1097/md.0000000000007290] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Revised: 06/02/2017] [Accepted: 06/03/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The high recurrent rate of chronic subdural hematoma (CSDH) has consistently confused the neurosurgeons, and the role of atorvastatin in the management of CSDH has remained unclear over past decade, and atorvastatin seems to be a safe and cost-effective treatment to CSDH. Therefore, it is necessary to conduct a systematic review to discuss the effect of atorvastatin in CSDH. METHOD We searched the PubMed, EMBASE, Cochrane Library, and the China Biology Medicine disc, up to March 2017, for published studies on the effects of atorvastatin in the management of CSDH, and reviewers performed a brief qualitative descriptive analysis of atorvastatin's efficacy in the management of CSDH. RESULTS Three eligible studies were included in this systematic review. Results indicated that atorvastatin accelerated hematoma absorption, decreased recurrence risk, and surgical requirement. CONCLUSION Limited evidence suggests that oral atorvastatin may be beneficial in the management of CSDH. Further high-quality studies focused on dosage, duration, hematoma size are needed to further elucidate the role of atorvastatin in the management of CSDH.
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Affiliation(s)
- Sheng Qiu
- Department of Neurosurgery, Huzhou Central Hospital, Huzhou, Zhejiang
| | - Wang Zhuo
- School of Nursing, Soochow University
| | - Chunming Sun
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhongzhou Su
- Department of Neurosurgery, Huzhou Central Hospital, Huzhou, Zhejiang
| | - Ai Yan
- Department of Neurosurgery, Huzhou Central Hospital, Huzhou, Zhejiang
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18
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Edlmann E, Giorgi-Coll S, Whitfield PC, Carpenter KLH, Hutchinson PJ. Pathophysiology of chronic subdural haematoma: inflammation, angiogenesis and implications for pharmacotherapy. J Neuroinflammation 2017; 14:108. [PMID: 28558815 PMCID: PMC5450087 DOI: 10.1186/s12974-017-0881-y] [Citation(s) in RCA: 325] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/15/2017] [Indexed: 02/08/2023] Open
Abstract
Chronic subdural haematoma (CSDH) is an encapsulated collection of blood and fluid on the surface of the brain. Historically considered a result of head trauma, recent evidence suggests there are more complex processes involved. Trauma may be absent or very minor and does not explain the progressive, chronic course of the condition. This review focuses on several key processes involved in CSDH development: angiogenesis, fibrinolysis and inflammation. The characteristic membrane surrounding the CSDH has been identified as a source of fluid exudation and haemorrhage. Angiogenic stimuli lead to the creation of fragile blood vessels within membrane walls, whilst fibrinolytic processes prevent clot formation resulting in continued haemorrhage. An abundance of inflammatory cells and markers have been identified within the membranes and subdural fluid and are likely to contribute to propagating an inflammatory response which stimulates ongoing membrane growth and fluid accumulation. Currently, the mainstay of treatment for CSDH is surgical drainage, which has associated risks of recurrence requiring repeat surgery. Understanding of the underlying pathophysiological processes has been applied to developing potential drug treatments. Ongoing research is needed to identify if these therapies are successful in controlling the inflammatory and angiogenic disease processes leading to control and resolution of CSDH.
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Affiliation(s)
- Ellie Edlmann
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
| | - Susan Giorgi-Coll
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
| | - Peter C. Whitfield
- Southwest Neurosurgical Centre, Plymouth Hospitals NHS Trust, Plymouth, PL6 8DH UK
| | - Keri L. H. Carpenter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
| | - Peter J. Hutchinson
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
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19
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Soleman J, Nocera F, Mariani L. The conservative and pharmacological management of chronic subdural haematoma: a systematic review. Swiss Med Wkly 2017; 147:w14398. [DOI: 10.57187/smw.2017.14398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Chronic subdural haematoma (cSDH), one of the most common neurosurgical entities, occurs typically in elderly patients. The incidence is expected to double by the year 2030, owing to the continuous aging of the population. Surgery is usually the treatment of choice, but conservative treatment may be a good alternative in some situations. We provide a systematic review of studies analysing the conservative treatment options and the natural history of cSDH. Of 231 articles screened, 35 were included in this systematic review. Studies evaluating the natural history and conservative treatment modalities of cSDH remain sparse and are predominantly of low level of evidence. The natural history of cSDH remains unclear and is analysed only in case reports or very small case series. “Wait and watch” or “wait and scan” management is indicated in patients with no or minor symptoms (Markwalder score 0–1). However, it seems that there are no clear clinical or radiological signs indicating whether the cSDH will resolve spontaneously or not (type C recommendation). In symptomatic patients who are not worsening or in a comatose state, oral steroid treatment might be an alternative to surgery (type C recommendation). Tranexamic acid proved effective in a small patient series (type C recommendation), but its risk of increasing thromboembolic events in patients treated with antithrombotic or anticoagulant medication is unclear. Angiotensin converting-enzyme inhibitors were evaluated only as adjuvant therapy to surgery, and their effect on the rate of recurrence remains debatable. Mannitol showed promising results in small retrospective series and might be a valid treatment modality (type C recommendation). However, the long treatment duration is a major drawback. Patients presenting without paresis can be treated with a platelet activating factor receptor antagonist (type C recommendation), since they seem to promote resolution of the haematoma, especially in patients with hygromas or low-density haematomas on computed tomography. Lastly, atorvastatin seems to be a safe option for the conservative treatment of asymptomatic or mildly symptomatic cSDH patients (type C recommendation). In conclusion, our knowledge of the conservative treatment modalities for cSDH is sparse and based on small case series and low grade evidence. However, some treatment modalities seem promising even in symptomatic patients with large haematomas. Randomised controlled trials are currently underway, and will hopefully provide us with good evidence for or against the conservative treatment of cSDH.
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20
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Chan DYC, Chan DTM, Sun TFD, Ng SCP, Wong GKC, Poon WS. The use of atorvastatin for chronic subdural haematoma: a retrospective cohort comparison study. Br J Neurosurg 2016; 31:72-77. [DOI: 10.1080/02688697.2016.1208806] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- David Yuen Chung Chan
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong
| | - Danny Tat Ming Chan
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong
| | - Tin Fung David Sun
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong
| | - Stephanie Chi Ping Ng
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong
| | - George Kwok Chu Wong
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong
| | - Wai Sang Poon
- Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong
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