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Sun T, Shao D, Li J, Xu D, Zhang T, Li L, Sun W, Zhang C, Wen X, Chen H, Zhang R, Jiang Z. Therapeutic efficacy of drilling drainage combined with intraoperative middle meningeal artery occlusion in the management of chronic subdural hematoma: a clinical study. Neurosurg Rev 2024; 47:293. [PMID: 38914867 PMCID: PMC11196335 DOI: 10.1007/s10143-024-02501-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/27/2024] [Accepted: 06/04/2024] [Indexed: 06/26/2024]
Abstract
BACKGROUND The bone holes in the skull during surgical drainage were accurately located at the site of the MMA. The MMA was severed, and the hematoma was removed intraoperatively; furthermore, surgical drainage removed the pathogenic factors of CSDH. This study aimed to describe and compare the results of the new treatment with those of traditional surgical drainage, and to investigate the relevance of this approach. METHODS From December 2021 to June 2023, 72 patients were randomly assigned to the observation group and the control group. The control group was treated with traditional surgical drainage, while the observation group was treated with DSA imaging to accurately locate the bone holes drilled in the skull on the MMA trunk before traditional surgical drainage. The MMA trunk was severed during the surgical drainage of the hematoma. The recurrence rate, time of indwelling drainage tube, complications, mRS, and other indicators of the two groups were compared, and the changes of cytokine components and imaging characteristics of the patients were collected and analyzed. RESULTS Overall, 27 patients with 29-side hematoma in the observation group and 45 patients with 48-side hematoma in the control group were included in the study. The recurrence rate was 0/29 in the observation group and 4/48 in the control group, indicating that the recurrence rate in the observation group was lower than in the control group (P = .048). The mean indwelling time of the drainage tube in the observation group was 2.04 ± 0.61 days, and that in the control group was 2.48 ± 0.61 days. The indwelling time of the drainage tube in the observation group was shorter than in the control group (P = .003). No surgical complications were observed in the observation group or the control group. The differences in mRS scores before and after operation between the observation group and the control group were statistically significant (P < .001). The concentrations of cytokine IL6/IL8/IL10/VEGF in the hematoma fluid of the observation and control groups were significantly higher than those in venous blood (P < .001). After intraoperative irrigation and drainage, the concentrations of cytokines (IL6/IL8/IL10/VEGF) in the subdural hematoma fluid were significantly lower than they were preoperatively. In the observation group, the number of MMA on the hematoma side (11/29) before STA development was higher than that on the non-hematoma side (1/25), and the difference was statistically significant (P = .003). CONCLUSION In patients with CSDH, accurately locating the MMA during surgical trepanation and drainage, severing the MMA during drainage, and properly draining the hematoma, can reduce the recurrence rate and retention time of drainage tubes, thereby significantly improving the postoperative mRS Score without increasing surgical complications.
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Affiliation(s)
- Tao Sun
- School of Continuing Education, Anhui Medical University, Hefei, China
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Dongqi Shao
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Jian Li
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Decai Xu
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Tao Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Lei Li
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Wenjie Sun
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Caihong Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Xinjie Wen
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Haonan Chen
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Renhao Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Zhiquan Jiang
- School of Continuing Education, Anhui Medical University, Hefei, China.
- Department of Neurosurgery, The First Affiliated Hospital of Bengbu Medical University, Bengbu, China.
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Liu T, Gao Z, Zhou J, Lai X, Chen X, Rao Q, Guo D, Zheng J, Lin F, Lin Y, Lin Z. Subdural evacuating port system with subdural thrombolysis for the treatment of chronic subdural hematoma in patients older than 80 years. Front Neurol 2023; 14:1068829. [PMID: 36873430 PMCID: PMC9975157 DOI: 10.3389/fneur.2023.1068829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 01/17/2023] [Indexed: 02/17/2023] Open
Abstract
Objective The subdural evacuating port system (SEPS) is a minimally invasive approach that can be performed under local anesthesia for the treatment of chronic subdural hematoma (CSDH). Subdural thrombolysis has been described as an exhaustive drainage strategy and found to be safe and effective for improving drainage. We aim to analyze the effectiveness of SEPS with subdural thrombolysis in patients older than 80 years. Method Consecutive patients aged ≥80 years old who presented with symptomatic CSDH and underwent SEPS followed by subdural thrombolysis between January 2014 and February 2021 were retrospectively studied. Outcome measures included complications, mortality, recurrence, and modified Rankin Scale (mRS) scores at discharge and 3 months. Results In total, 52 patients with CSDH in 57 hemispheres were operated on, with a mean age of 83.9 ± 3.3 years, and 40 (76.9%) patients were men. The preexisting medical comorbidities were observed in 39 patients (75.0%). Postoperative complications occurred in nine patients (17.3%), with two having significant complications (3.8%). The complications observed included pneumonia (11.5%), acute epidural hematoma (3.8%), and ischemic stroke (3.8%). One patient experienced contralateral malignant middle cerebral artery infarction and died of subsequent severe herniation, contributing to a perioperative mortality rate of 1.9%. Discharge and 3 months of favorable outcomes (mRS score 0-3) were achieved in 86.5% and 92.3% of patients, respectively. CSDH recurrence was observed in five patients (9.6%), and repeat SEPS was performed. Conclusion As an exhaustive drainage strategy, SEPS followed by thrombolysis is safe and effective with excellent outcomes among elderly patients. It is a technically easy and less invasive procedure with similar complications, mortality, and recurrence rates compared with burr-hole drainage in the literature.
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Affiliation(s)
- Tianqing Liu
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Zhenwen Gao
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Jianjun Zhou
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Xiaoyan Lai
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Xiaomei Chen
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Qiong Rao
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Dongbin Guo
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Jinliang Zheng
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China
| | - Fuxin Lin
- Department of Neurosurgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Yuanxiang Lin
- Department of Neurosurgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Zhiqin Lin
- Department of Neurosurgery, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, Fujian, China.,Department of Neurosurgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
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Consuegra A, Lutz K, Exadaktylos AK, Z’Graggen WJ, Hasler RM. Traumatic brain injury in the elderly after a skiing accident: A retrospective cohort study in a level 1 emergency department in Switzerland. PLoS One 2022; 17:e0273168. [PMID: 35976893 PMCID: PMC9384986 DOI: 10.1371/journal.pone.0273168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 08/03/2022] [Indexed: 11/26/2022] Open
Abstract
Background Skiing is a very popular sport worldwide, with increasing trends over the past decades. This study aimed to evaluate the importance of traumatic brain injury (TBI), especially in the elderly, after a ski accident, and to describe its short-term repercussions. Methodology Patients were analyzed who were admitted to our neurotrauma center from 2012–2018 after a head trauma while skiing. Three different age groups were differentiated and analyzed for the severity of TBI depending on the initial Glasgow Coma Scale as the primary outcome and as secondary outcomes need and type of surgery, Glasgow Outcome Score, preexisting use of anticoagulant or antiplatelet drugs, time to presentation, and pattern of brain injury. TBI severity was adjusted to the time to initial medical consultation. Results No significant difference in TBI severity was found when comparing the middle (>29–54) and older (≥54) age groups to the reference group <30 years (OR:0.45, p = 0.127; OR:0.46, p = 0.17). Acute subdural hemorrhage was present in 21.2% of the ≥55 group and 14.5% of the 30–54 age group, compared to 12.8% of the youngest group (p = <0.001). Overall, 39.4% of the patients in the ≥55 group and 8.1% of the 30–54 age group presented with chronic subdural hemorrhage, whereas none of the youngest patients did (p = <0.001). Conclusion No differences were observed in terms of TBI severity between age groups after acute trauma. Nonetheless, a different pattern of head injury after TBI in older patients was demonstrated. Accordingly, the management differs for these TBIs compared to those of younger patients.
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Affiliation(s)
- Alberto Consuegra
- Department of Neurosurgery, University of Bern, Bern University Hospital, Bern, Switzerland
- * E-mail:
| | - Katharina Lutz
- Department of Neurosurgery, University of Bern, Bern University Hospital, Bern, Switzerland
| | | | - Werner J. Z’Graggen
- Department of Neurosurgery, University of Bern, Bern University Hospital, Bern, Switzerland
| | - Rebecca M. Hasler
- Department of Emergency Medicine, University of Bern, Bern University Hospital, Bern, Switzerland
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Hu J, Sokh V, Nguon S, Heng YV, Husum H, Kloster R, Odland JØ, Xu S. Emergency Craniotomy and Burr-Hole Trephination in a Low-Resource Setting: Capacity Building at a Regional Hospital in Cambodia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19116471. [PMID: 35682054 PMCID: PMC9179964 DOI: 10.3390/ijerph19116471] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 12/04/2022]
Abstract
To evaluate the teaching effect of a trauma training program in emergency cranial neurosurgery in Cambodia on surgical outcomes for patients with traumatic brain injury (TBI). We analyzed the data of TBI patients who received emergency burr-hole trephination or craniotomy from a prospective, descriptive cohort study at the Military Region 5 Hospital between January 2015 and December 2016. TBI patients who underwent emergency cranial neurosurgery were primarily young men, with acute epidural hematoma (EDH) and acute subdural hematoma (SDH) as the most common diagnoses and with long transfer delay. The incidence of favorable outcomes three months after chronic intracranial hematoma, acute SDH, acute EDH, and acute intracerebral hematoma were 96.28%, 89.2%, 93%, and 97.1%, respectively. Severe traumatic brain injury was associated with long-term unfavorable outcomes (Glasgow Outcome Scale of 1–3) (OR = 23.9, 95% CI: 3.1–184.4). Surgical outcomes at 3 months appeared acceptable. This program in emergency cranial neurosurgery was successful in the study hospital, as evidenced by the fact that the relevant surgical capacity of the regional hospital increased from zero to an acceptable level.
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Affiliation(s)
- Jingjing Hu
- Department of Public Health and Nursing, Norwegian University of Science and Technology, 7491 Trondheim, Norway;
| | - Vannara Sokh
- Military Region 5 Hospital, Battambang, Cambodia; (V.S.); (S.N.)
| | - Sophy Nguon
- Military Region 5 Hospital, Battambang, Cambodia; (V.S.); (S.N.)
| | - Yang Van Heng
- Trauma Care Foundation Cambodia, Battambang, Cambodia;
| | - Hans Husum
- Tromsø Mine Victim Resource Center, University Hospital North Norway, 9038 Tromsø, Norway; (H.H.); (R.K.)
- Department of Community Medicine, UiT the Arctic University of Norway, 9019 Tromsø, Norway
| | - Roar Kloster
- Tromsø Mine Victim Resource Center, University Hospital North Norway, 9038 Tromsø, Norway; (H.H.); (R.K.)
- Department of Neurosurgery, University Hospital of North Norway, 9038 Tromsø, Norway
| | - Jon Øyvind Odland
- Department of Public Health and Nursing, Norwegian University of Science and Technology, 7491 Trondheim, Norway;
- Correspondence: (J.Ø.O.); (S.X.)
| | - Shanshan Xu
- Department of Public Health and Nursing, Norwegian University of Science and Technology, 7491 Trondheim, Norway;
- Center for International Health, Department of Global Public Health and Primary Care, University of Bergen, 5009 Bergen, Norway
- Correspondence: (J.Ø.O.); (S.X.)
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Ozevren H, Cetin A, Hattapoglu S, Baloglu M. Burr hole and craniotomy in the treatment of subdural hematoma: A comparative study. Niger J Clin Pract 2022; 25:1056-1060. [DOI: 10.4103/njcp.njcp_1511_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shlobin NA, Kedda J, Wishart D, Garcia RM, Rosseau G. Surgical Management of Chronic Subdural Hematoma in Older Adults: A Systematic Review. J Gerontol A Biol Sci Med Sci 2021; 76:1454-1462. [PMID: 33220683 DOI: 10.1093/gerona/glaa293] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Chronic subdural hematoma (cSDH) is a form of intracranial hemorrhage common in older adults. Optimal treatment remains controversial. We conducted a systematic review to identify surgical thresholds, characterize outcomes, and delineate critical considerations in the surgical management of older adults in order to summarize the evidence supporting the best contemporary management of cSDH. METHODS A systematic review exploring surgical management of cSDH among individuals aged 65 years and older was conducting by searching the PubMed, Embase, and Scopus databases for articles in English. Abstracts from articles were read and selected for full-text review according to a priori criteria. Relevant full-text articles were analyzed for bibliographic data, aim, study design, population, interventions, and outcomes. RESULTS Of 1473 resultant articles, 21 were included. Surgery rationale was case-by-case for symptomatic patients with cSDH. Surgery was superior to conservative management and promoted equivalent neurologic outcomes and rates of complications. Recurrence and reoperation rates in older adults were similar to younger individuals. Some studies reported higher mortality rates for older adults, while others reported no difference. Anticoagulation or antiplatelet agent use did not seem to be associated with poorer outcomes in older adults. CONCLUSIONS Surgery for cSDH in older adults leads to favorable neurologic outcomes without increased risk of overall complications, recurrence, or reoperation compared to younger patients. However, older adults may be at increased risk for mortality after surgery. It is important to determine use of anticoagulant or antiplatelet agents in older adults to optimally manage patients with cSDH.
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Affiliation(s)
- Nathan A Shlobin
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Jayanidhi Kedda
- Department of Neurosurgery, George Washington University School of Medicine & Health Sciences, Washington, District of Columbia
| | - Danielle Wishart
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Roxanna M Garcia
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Gail Rosseau
- Department of Neurosurgery, George Washington University School of Medicine & Health Sciences, Washington, District of Columbia
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Outcomes of Surgical Evacuation of Chronic Subdural Hematoma in the Aged: Institutional Experience and Systematic Review. World Neurosurg 2020; 144:270-282.e1. [PMID: 32829021 DOI: 10.1016/j.wneu.2020.08.118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/14/2020] [Accepted: 08/15/2020] [Indexed: 11/23/2022]
Abstract
BACKGROUND Surgical intervention for chronic subdural hematoma (cSDH) in the elderly population remains a clinical challenge given that associated morbidity and outcomes do not always equate radiographic success with clinical success. Our objective was to compare outcome measures of 2 age groups of patients undergoing surgical intervention for cSDH evacuation and to perform a systematic review of the literature related to this topic. METHODS A retrospective analysis of adult patients undergoing surgical evacuation of cSDH at our institution was performed. Primary outcome measures of modified Rankin Scale (mRS) score at discharge and 3 months were assessed. In addition, a systematic search was performed to collect all relevant studies addressing outcomes after surgical intervention in aged patients with cSDH. RESULTS There were 72 patients in the younger cohort (<70 years) and 113 patients in the aged cohort (≥70 years). Multivariate analysis showed significant association between age and higher mRS score at discharge and 3 months follow-up. There were also significant differences in length of stay and disposition between the 2 groups. Twenty-one studies were reviewed, and 11 studies were included in a meta-analysis of recurrence rates between studied age groups. CONCLUSIONS The aged cohort had worse outcomes than the younger cohort as determined by mRS score at discharge and 3 months. A systematic review of outcomes is provided with limited meta-analysis because of the heterogenous nature of outcome reporting and the observational design of previous studies. Further studies with standardized reporting and long-term follow-up are warranted to further study outcomes in this increasing population.
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Lee KS, Yoon SM, Oh JS, Oh HJ, Shim JJ, Doh JW. Causes and Trauma Apportionment Score of Chronic Subdural Hematoma. Korean J Neurotrauma 2018; 14:61-67. [PMID: 30402420 PMCID: PMC6218349 DOI: 10.13004/kjnt.2018.14.2.61] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 08/22/2018] [Accepted: 08/29/2018] [Indexed: 11/24/2022] Open
Abstract
Objective The pathophysiology of chronic subdural hematoma (CSH) is not yet clear. Trauma alone is not sufficient to result in CSH in young individuals, while a trivial injury can result in CSH in older adults. Although the causality and apportionment of trauma are important issues in CSH, especially in terms of insurance, it is too obscure to solve all struggles. Methods There are three key factors for producing CSH. First, CSH necessitates a potential subdural reservoir. Other important precipitating factors are trauma and coagulopathy. However, these factors are not sufficient to cause CSH development. The trauma apportionment score (TAS) can be used to compare the relative importance of these three factors. Here, we applied the TAS to 239 consecutive cases of CSH. We retrospectively obtained the patients' history and laboratory results from their medical records. Results The TAS ranged from −5 to 5. The most common score was 0. If we defined the cause of CSH as being combined when the TAS was 0, then the cause was combined in 30 cases (12.6%). If we extended the criteria for a combined cause from 0 to −1 to 1, the cause was combined in 107 cases (44.8%). Regardless of the criteria used, traumatic CSHs were more common than were spontaneous CSHs. Spontaneous CSHs were more common in older than in younger patients (p<0.01, Fisher's exact test). Conclusion The TAS is a useful tool for differentiating the causality of CSH.
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Affiliation(s)
- Kyeong-Seok Lee
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Seok-Mann Yoon
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Jae-Sang Oh
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hyuk-Jin Oh
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Jae-Jun Shim
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Jae-Won Doh
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
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Abstract
Objective: The proportion of the super-aged population (at the age of 80 or above) in patients with chronic subdural hematoma (CSDH) and the incidence of CSDH of the population have been increasing. Since it is widely accepted that YL-1 needle is effective in CSDH treatment, this paper aimed to probe into the efficacy of YL-1 needle in minimally invasive surgery for super-aged (at the age of 80–90) CSDH patients. Methods: A retrospective analysis on the clinical information of 17 super-aged CSDH patients having received the YL-1 needle puncture treatment provided by the hospital from May 2012 to December 2016 was performed. At the same time, another 19 CSDH patients (ages 60–79) who were hospitalized during the same period were randomly selected to form a control group. The same surgical treatment was provided for both groups to observe and compare the treatment efficacy. Results: The patients of both groups were cured and discharged. Among the super-aged patients, there was 1 patient with postoperative hematoma recurrence, 1 patient with pneumocephalus, and 1 patient with wound infection; among the aged patients, 1 reported postoperative recurrence and 2 had pneumocephalus; The average length of stay of the super-aged group was 9.235 ± 2.948 days while that of the aged group was 7.316 ± 3.660 days, which showed no statistical difference. Conclusion: The YL-1 needle puncture treatment is safe and efficacious for both the super-aged and the aged CSDH patients.
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Lee KS. Chronic Subdural Hematoma in the Aged, Trauma or Degeneration? J Korean Neurosurg Soc 2016; 59:1-5. [PMID: 26885279 PMCID: PMC4754581 DOI: 10.3340/jkns.2016.59.1.1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/22/2015] [Accepted: 12/03/2015] [Indexed: 12/30/2022] Open
Abstract
Chronic subdural hematomas (CSHs) are generally regarded to be a traumatic lesion. It was regarded as a stroke in 17th century, an inflammatory disease in 19th century. From 20th century, it became a traumatic lesion. CSH frequently occur after a trauma, however, it cannot occur when there is no enough subdural space even after a severe head injury. CSH may occur without trauma, when there is sufficient subdural space. The author tried to investigate trends in the causation of CSH. By a review of literature, the author suggested a different view on the causation of CSH. CSH usually originated from either a subdural hygroma or an acute subdural hematoma. Development of CSH starts from the separation of the dural border cell (DBC) layer, which induces proliferation of DBCs with production of neomembrane. Capillaries will follow along the neomembrane. Hemorrhage would occur into the subdural fluid either by tearing of bridge veins or repeated microhemorrhage from the neomembrane. That is the mechanism of hematoma enlargement. Trauma or bleeding tendency may precipitate development of CSH, however, it cannot lead CSH, if there is no sufficient subdural space. The key determinant for development of CSH is a sufficient subdural space, in other words, brain atrophy. The most common and universal cause of brain atrophy is the aging. Modifying Virchow's description, CSH is sometimes traumatic, but most often caused by degeneration of the brain. Now, it is reasonable that degeneration of brain might play pivotal role in development of CSH in the aged persons.
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Affiliation(s)
- Kyeong-Seok Lee
- Department of Neurosurgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
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