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Schack A, Rønn Jensen TS, Jensen MH, Miscov R, Sindby AK, Fugleholm K, Bergholt B, Bjarkam CR, Poulsen FR, Grønhøj MH. Intraoperative Irrigation and Risk of Chronic Subdural Hematoma Recurrence. Oper Neurosurg (Hagerstown) 2024; 26:203-212. [PMID: 37819102 DOI: 10.1227/ons.0000000000000941] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/13/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND AND OBJECTIVES In most neurosurgical centers, irrigation is an essential part of the surgical procedure for chronic subdural hematoma (CSDH). However, it is unknown whether the volume of irrigation fluid affects the risk of CSDH recurrence. This study aimed to investigate a potential association between the volume of irrigation fluid used during burr hole evacuation of CSDH and the risk of CSDH recurrence. METHODS This study is a subanalysis of 2 randomized trials (Drain Time & Drain Time 2) designed to investigate the effect of drainage duration on the recurrence of CSDH. Intraoperative irrigation volume was measured, and patients were followed for 90 days for recurrent CSDH. RESULTS A total of 525 patients with CSDH were included. There was no significant difference in the volume of irrigation fluid used between patients with recurrence (mean = 938 mL, SD = ±552) and without recurrence (mean = 852 mL, SD = ±454) ( P -value = .15). Patients with recurrent CSDH had larger primary CSDH volumes (mean = 134 cm 3 , SD = ±69) than patients without recurrence (mean = 119 cm 3 , SD = ±58) ( P = .04). Multiple logistic regression analysis revealed no association between irrigation volume and recurrence, also when stratified for hematoma size. CONCLUSION There was no significant association between irrigation volume and recurrent CSDH within 90 days in patients undergoing burr hole surgery for CSDH.
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Affiliation(s)
- Anders Schack
- Department of Neurosurgery, Odense University Hospital, Odense , Denmark
- Department of Clinical Research and BRIDGE (Brain Research - Inter Disciplinary Guided Excellence), University of Southern Denmark, Odense , Denmark
| | | | - Mette Haldrup Jensen
- Department of Neurosurgery, Odense University Hospital, Odense , Denmark
- Department of Clinical Research and BRIDGE (Brain Research - Inter Disciplinary Guided Excellence), University of Southern Denmark, Odense , Denmark
- Department of Neurosurgery, Aarhus University Hospital, Aarhus , Denmark
| | - Rares Miscov
- Department of Neurosurgery, Aalborg University Hospital, Aalborg , Denmark
| | | | - Kåre Fugleholm
- Department of Neurosurgery, Rigshospitalet, Copenhagen , Denmark
| | - Bo Bergholt
- Department of Neurosurgery, Aarhus University Hospital, Aarhus , Denmark
| | | | - Frantz Rom Poulsen
- Department of Neurosurgery, Odense University Hospital, Odense , Denmark
- Department of Clinical Research and BRIDGE (Brain Research - Inter Disciplinary Guided Excellence), University of Southern Denmark, Odense , Denmark
| | - Mads Hjortdal Grønhøj
- Department of Neurosurgery, Odense University Hospital, Odense , Denmark
- Department of Clinical Research and BRIDGE (Brain Research - Inter Disciplinary Guided Excellence), University of Southern Denmark, Odense , Denmark
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Al-Salihi MM, Al-Jebur MS, Al-Salihi Y, Saha R, Hammadi F, Al Hajali A, Ayyad A. Comparison of Burr-Hole Craniostomy versus Twist-Drill Craniostomy Operations for Patients with Chronic Subdural Hematoma: A Systematic Review and Network Meta-Analysis. World Neurosurg 2023; 176:229-236.e7. [PMID: 37178912 DOI: 10.1016/j.wneu.2023.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023]
Abstract
BACKGROUND Chronic subdural hematoma (CSDH) represents one of the most common neurologic disorders in the elderly. However, the optimum surgical option remains questionable. This study aims to compare the safety and efficacy of single burr-hole craniostomy (sBHC), double burr-hole craniostomy (dBHC), and twist-drill craniostomy (TDC) in patients with CSDH. METHODS We searched PubMed, Embase, Scopus, Cochrane, and Web of Science until October 2022 for prospective trials. Primary outcomes comprised recurrence and mortality. The analysis was performed using R software, and the results were reported as risk ratio (RR) and 95% confidence interval (CI). RESULTS Data from 11 prospective clinical trials were included in this network meta-analysis. We found that dBHC significantly decreased recurrence and reoperation rates compared with TDC (RR = 0.55, CI, 0.33-0.90 and RR = 0.48, CI, 0.24-0.94, respectively). However, sBHC showed no difference compared with dBHC and TDC. There was no significant difference among dBHC, sBHC, and TDC regarding the hospitalization duration, complication rates, mortality, and cured rates. CONCLUSIONS dBHC seems to be the best modality for CSDH compared with sBHC and TDC. It showed significantly less recurrence and reoperation rates compared with TDC. On the other hand, dBHC showed no significant difference with the other comparators regarding complication, mortality, and cure rates in addition to the hospitalization duration.
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Affiliation(s)
- Mohammed Maan Al-Salihi
- Department of Neurosurgery, Hamad General Hospital, Doha, Qatar; College of Medicine, University of Baghdad, Baghdad, Iraq; Department of Neurological Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA.
| | | | | | - Ram Saha
- Department of Neurology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Firas Hammadi
- Department of Neurosurgery, Hamad General Hospital, Doha, Qatar
| | - Amro Al Hajali
- Department of Neurosurgery, Hamad General Hospital, Doha, Qatar
| | - Ali Ayyad
- Department of Neurosurgery, Hamad General Hospital, Doha, Qatar; Department of Neurosurgery, Saarland University Hospital, Homburg, Germany
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Qiu Y, Xie M, Duan A, Yin Z, Wang M, Chen X, Chen Z, Gao W, Wang Z. Comparison of different surgical techniques for chronic subdural hematoma: a network meta-analysis. Front Neurol 2023; 14:1183428. [PMID: 37564732 PMCID: PMC10411900 DOI: 10.3389/fneur.2023.1183428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/27/2023] [Indexed: 08/12/2023] Open
Abstract
Background Chronic subdural hematoma (CSDH) is a neurosurgical condition with high prevalence. Many surgical approaches are recommended for treating CSDH, but there needs to be a consensus on the optimal technique. This network meta-analysis (NMA) compared the efficacy and safety of different surgical treatments for CSDH. Methods Electronic databases, including PubMed, Embase, and the Cochrane Library, were searched for relevant studies up to February 2023. An NMA was performed to compare the outcomes of patients with CSDH treated by single-hole or double-hole craniotomy (SBHC and DBHC, respectively), twist-drill craniotomy (TDC), mini-craniotomy, and craniotomy. The NMA protocol was registered at INPLASY (registration no. 202320114). Results The NMA included 38 studies with 7,337 patients. For efficacy outcomes, DBHC showed the highest surface under the cumulative ranking area (SUCRA) values for recurrence (96.3%) and reoperation (87.4%) rates. DBHC differed significantly from mini-craniotomy in recurrence rate (odds ratio [OR] = 0.58, 95% confidence interval [CI]: 0.35, 0.97) and from SBHC (OR = 0.48, 95% CI: 0.25, 0.91) and TDC (OR = 0.40, 95% CI: 0.20, 0.82) in reoperation rate. For operative time, TDC was superior to SBHC (mean difference [MD] = -2.32, 95% CI: -3.78 to -0.86), DBHC (MD = -3.61, 95% CI: -5.55, -1.67), and mini-craniotomy (MD = -3.39, 95% CI: -5.70, -1.08). Patients treated by TDC had a shorter hospital stay than those treated by SBHC (MD = -0.82, 95% CI: -1.51, -0.12). For safety outcomes, there were no significant differences between groups in mortality and complication rates; however, mini-craniotomy (79.8%) and TDC (78.1%) had the highest SUCRAs. Conclusion DBHC may be the most effective surgical treatment for CSDH based on the low recurrence and reoperation rates, although all examined techniques were relatively safe. Systematic review registration https://inplasy.com/inplasy-2023-2-0114/.
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Affiliation(s)
- Youjia Qiu
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Minjia Xie
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Aojie Duan
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Ziqian Yin
- Suzhou Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Menghan Wang
- Suzhou Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Xi Chen
- Department of Epidemiology and Statistics, School of Public Health, Medical College, Zhejiang University, Hangzhou, China
- School of Health, Brooks College (Sunnyvale), Milpitas, CA, United States
| | - Zhouqing Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Wei Gao
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhong Wang
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
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Adeleye AO, Ulasi BI. Single Frontal Burr-Hole Craniostomy Under Local Anesthesia for Treating Chronic Subdural Hematoma in the Septuagenarians and Older Adults: Surgical Technique and Results. Indian Journal of Neurotrauma 2023. [DOI: 10.1055/s-0043-1762600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Abstract
Background Chronic subdural hematoma (CSDH) is not a totally benign disease in the elderly patients, especially those aged 70 years and above. Hence, the surgical treatment of CSDH in aged patients needs to be as minimally disruptive as possible.
Methods An annotated description of the surgical technique of single frontal burr-hole craniostomy performed under local anesthesia and without closed tube drainage for evacuating CSDH in the septuagenarians and older adults is given. We also review the outcome of the procedure on a prospective consecutive cohort of patients in our service
Results Thirty patients, 25 males, aged 70 years and above successfully underwent this surgical procedure. Their mean age was 76.5 years (standard deviation, 4.3). The CSDH was bilateral in 30% (9/30), and more left sided in the rest, the unilateral cases, and was of mixed density radiologically, in most cases (73%, 22/30). Clinical presentation was mainly gait impairment, cognitive decline, and headache, and 57% (17/30) presented with coma or stupor as assessed by the Markwalder grading scale.The surgery was successfully executed in all, median duration 45.0 minutes (interquartile range 37.3–60.0), and solely under local anesthesia in 77% (23/30) or with momentary short-acting sedation in the rest. The outcome was very good in 90.0% (27/30) using the modified Rankin Scale (mRS) including two-third (20/30) completely asymptomatic (mRS 0) and 7/30 with only slight symptoms/disability, mRS ≤ 2. Three patients died perioperatively, all presenting in coma.
Conclusion This surgical technique appears very effectual for CSDH, is executed at a comparatively low cost, and, being much less disruptive than other traditional methods, may be a more homeostatic operative treatment in geriatric patients at least.
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Affiliation(s)
- Amos Olufemi Adeleye
- Department of Surgery, Division of Neurological Surgery, College of Medicine, University of Ibadan, and University College Hospital, Ibadan, Nigeria
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Roohollahi F, Kankam SB, Shafizadeh M, Khoshnevisan A. A prospective randomized controlled trial of the effect of the number of burr hole on chronic subdural hematoma recurrence: An institutional experience. Clin Neurol Neurosurg 2023; 226:107624. [PMID: 36791590 DOI: 10.1016/j.clineuro.2023.107624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/26/2023] [Accepted: 02/05/2023] [Indexed: 02/12/2023]
Abstract
OBJECTIVE The purpose of this study was to compare the effect of single burr hole (SBH) versus double burr hole (DBH) drainage on the recurrence rate of chronic subdural hematoma (CSDH). METHOD Forty-four patients undergoing burr hole craniostomy (BHC) between July 2022 and December 2022 were enrolled in a randomized clinical trial (RCT) comparing SBH to DBH surgeries. The primary endpoint of this study was the recurrence rate of CSDH. Radiological characteristics such as midline shift, thickness, volume, density, type of hematoma, brain atrophy and so on were secondary endpoints. RESULTS Forty-four patients participated in this study. Twenty-two hematomas underwent SBH craniostomy, and the other 22 had DBH craniostomy. The mean age in the SBH and DBH groups were 68.59 ± 7.94 and 69.54 ± 10.58, respectively. In each group, the proportion of males (SBH=16; DBH=15) was higher than that of females (SBH=6; DBH=7). The mean surgery time in the SBH group was significantly less than in the DBH group (p = 0.001). However, the two groups had no statistically significant difference in the CSDH recurrence rate (p = 0.312). CONCLUSION Our findings showed that SBH craniostomy is equally effective as DBH craniostomy at draining hematomas and does not increase the recurrence rate. Contrarily, the SBH craniostomy had a shorter surgical duration than the DBH craniostomy. As a result, we recommend SBH surgeries for all patients, with emphasis on the elderly and those with severe comorbidities, as well as in situations with few surgical facilities and a high patient admission rate.
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Affiliation(s)
- Faramarz Roohollahi
- Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Samuel Berchi Kankam
- Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran; School of medicine, Tehran University Of Medical Sciences, Tehran, Iran; International Neurosurgery Group, Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Milad Shafizadeh
- Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Khoshnevisan
- Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Henry J, Amoo M, Kissner M, Deane T, Zilani G, Crockett MT, Javadpour M. Management of Chronic Subdural Hematoma: A Systematic Review and Component Network Meta-analysis of 455 Studies With 103 645 Cases. Neurosurgery 2022; 91:842-855. [PMID: 36170165 DOI: 10.1227/neu.0000000000002144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/14/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Chronic subdural hematoma (CSDH) is a common neurosurgical condition with a high risk of recurrence after treatment. OBJECTIVE To assess and compare the risk of recurrence, morbidity, and mortality across various treatments for CSDH. METHODS A systematic review and meta-analysis was performed. PubMed/MEDLINE, EMBASE, SCOPUS, and Web of Science were searched from January 01, 2000, to July 07, 2021. The primary outcome was recurrence, and secondary outcomes were morbidity and mortality. Component network meta-analyses (CNMAs) were performed for surgical and medical treatments, assessing recurrence and morbidity. Incremental risk ratios (iRRs) with 95% CIs were estimated for each component. RESULTS In total, 12 526 citations were identified, and 455 studies with 103 645 cases were included. Recurrence occurred in 11 491/93 525 (10.8%, 95% CI 10.2-11.5, 418 studies) cases after surgery. The use of a postoperative drain (iRR 0.53, 95% CI 0.44-0.63) and middle meningeal artery embolization (iRR 0.19, 95% CI 0.05-0.83) reduced recurrence in the surgical CNMA. In the pharmacological CNMA, corticosteroids (iRR 0.47, 95% CI 0.36-0.61) and surgical intervention (iRR 0.11, 95% CI 0.07-0.15) were associated with lower risk. Corticosteroids were associated with increased morbidity (iRR 1.34, 95% CI 1.05-1.70). The risk of morbidity was equivalent across surgical treatments. CONCLUSION Recurrence after evacuation occurs in approximately 10% of cSDHs, and the various surgical interventions are approximately equivalent. Corticosteroids are associated with reduced recurrence but also increased morbidity. Drains reduce the risk of recurrence, but the position of drain (subdural vs subgaleal) did not influence recurrence. Middle meningeal artery embolization is a promising treatment warranting further evaluation in randomized trials.
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Affiliation(s)
- Jack Henry
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland.,School of Medicine, University College Dublin, Dublin, Ireland
| | - Michael Amoo
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland.,Department of Neurosurgery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Malia Kissner
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Thomas Deane
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Gulam Zilani
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland
| | - Matthew T Crockett
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland.,Department of Neuroradiology, Beaumont Hospital, Dublin, Ireland
| | - Mohsen Javadpour
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland.,Department of Neurosurgery, Royal College of Surgeons in Ireland, Dublin, Ireland.,Department of Academic Neurology, Trinity College Dublin, Dublin, Ireland
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Ran L, Huang S. Letter to the Editor Regarding: Single versus Double Burr Hole for Drainage of Chronic Subdural Hematoma: Randomized Controlled Study. World Neurosurg 2022; 165:203. [PMID: 36123824 DOI: 10.1016/j.wneu.2022.05.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 11/20/2022]
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Solou M, Ydreos I, Gavra M, Papadopoulos EK, Banos S, Boviatsis EJ, Savvanis G, Stavrinou LC. Controversies in the Surgical Treatment of Chronic Subdural Hematoma: A Systematic Scoping Review. Diagnostics (Basel) 2022; 12:2060. [PMID: 36140462 PMCID: PMC9498240 DOI: 10.3390/diagnostics12092060] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/15/2022] [Accepted: 08/22/2022] [Indexed: 11/23/2022] Open
Abstract
Chronic subdural hematoma (cSDH) is one of the most common neurosurgical entities, especially in the elderly population. Diagnosis is usually established via a head computed tomography, while an increasing number of studies are investigating biomarkers to predict the natural history of cSDH, including progression and recurrence. Surgical evacuation remains the mainstay of treatment in the overwhelming majority of cases. Nevertheless, many controversies are associated with the nuances of surgical treatment. We performed a systematic review of the literature between 2010 and 2022, aiming to identify and address the issues in cSDH surgical management where consensus is lacking. The results show ambiguous data in regard to indication, the timing and type of surgery, the duration of drainage, concomitant membranectomy and the need for embolization of the middle meningeal artery. Other aspects of surgical treatment-such as the use of drainage and its location and number of burr holes-seem to have been adequately clarified: the drainage of hematoma is strongly recommended and the outcome is considered as independent of drainage location or the number of burr holes.
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Affiliation(s)
- Mary Solou
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
| | - Ioannis Ydreos
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
| | - Maria Gavra
- Department of CT and MRI Imaging, “Agia Sofia” Hospital, 11527 Athens, Greece
| | - Evangelos K. Papadopoulos
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
| | - Stamatis Banos
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
| | - Efstathios J. Boviatsis
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
| | - Georgios Savvanis
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
| | - Lampis C. Stavrinou
- 2nd Department of Neurosurgery, “Attikon” University General Hospital, National and Kapodistrian University, Athens Medical School, 12462 Athens, Greece
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Zhu F, Wang H, Li W, Han S, Yuan J, Zhang C, Li Z, Fan G, Liu X, Nie M, Bie L. Factors correlated with the postoperative recurrence of chronic subdural hematoma: An umbrella study of systematic reviews and meta-analyses. EClinicalMedicine 2022; 43:101234. [PMID: 34988412 PMCID: PMC8703229 DOI: 10.1016/j.eclinm.2021.101234] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/08/2021] [Accepted: 11/24/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Chronic subdural hematoma (CSDH) is a common neurological disease, and the surgical evacuation of subdural collection remains the primary treatment approach for symptomatic patients. Postoperative recurrence is a serious complication, and several factors are correlated with postoperative recurrence. METHODS We searched Embase, Web of Science, PubMed, and Cochrane Library from their establishment to September 2020. Reports on randomized, prospective, retrospective, and overall observational studies on the management of surgical patients with CSDH were searched, and an independent reviewer performed research quality assessment. Factors that affect the postoperative recurrence of CSDH were extracted: social demographics, drugs (as the main or auxiliary treatment), surgical management, imaging, and other risk factors. We evaluated the recurrence rate of each risk factor. A random effect model was used to perform a meta-analysis, and each risk factor affecting the postoperative recurrence of CSDH was then evaluated and graded. FINDINGS In total, 402 studies were included in this analysis and 32 potential risk factors were evaluated. Among these, 21 were significantly associated with the postoperative recurrence of CSDH. Three risk factors (male, bilateral hematoma, and no drainage) had convincing evidence. The classification of evidence can help clinicians identify significant risk factors for the postoperative recurrence of CSDH. INTERPRETATION Only few associations were supported by high-quality evidence. Factors with high-quality evidence may be important for treating and preventing CSDH recurrence. Our results can be used as a basis for improving clinical treatment strategies and designing preventive methods. FUNDING No funding was received.
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Affiliation(s)
- Fulei Zhu
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Haifeng Wang
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Wenchen Li
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Shuai Han
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Jiangyuan Yuan
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Chunyun Zhang
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Zean Li
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Guangyan Fan
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
| | - Xuanhui Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Meng Nie
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Li Bie
- Department of Neurosurgery of the First Clinical Hospital, Jilin University, Changchun, China
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