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Aspalter S, Gmeiner M, Gasser S, Sonnberger M, Stroh N, Rauch P, Gruber A, Stefanits H. Feasibility, Clinical Potential, and Limitations of Trans-Burr Hole Ultrasound for Postoperative Evaluation of Chronic Subdural Hematoma: A Prospective Pilot Study. Neurosurgery 2024:00006123-990000000-01135. [PMID: 38647289 DOI: 10.1227/neu.0000000000002957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/01/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Chronic subdural hematoma (CSDH) is commonly managed through burr hole surgery. Routine follow-up using computed tomography (CT) imaging is frequently used at many institutions, contributing to significant radiation exposure. This study evaluates the feasibility, safety, and reliability of trans-burr hole sonography as an alternative postoperative imaging modality, aiming to reduce radiation exposure by decreasing the frequency of CT scans. METHODS We conducted a prospective pilot study on 20 patients who underwent burr hole surgery for CSDH. Postoperative imaging included both CT and sonographic examinations through the burr hole. We assessed the ability to measure residual subdural fluid thickness under the burr hole sonographically compared with CT, the occurrence of complications, and the potential factors affecting sonographic image quality. The Pearson correlation coefficient was used to demonstrate relationships between CT and ultrasound and axial and coronal ultrasound. RESULTS Sonography through the burr hole was feasible in 73.5% of cases, providing measurements of residual fluid that closely paralleled CT findings, with an average discrepancy of 1.2 mm for axial and 1.4 mm for coronal sonographic views. A strong positive correlation was found between axial and coronal ultrasound (r = 0.955), CT and axial ultrasound (r = 0.936), and CT and coronal ultrasound (r = 0.920). The primary obstacle for sonographic imaging was the presence of air within the burr hole or the subdural space, which typically resolved over time after surgery. CONCLUSION Trans-burr hole sonography emerges as a promising technique for postoperative monitoring of CSDH, with the potential to safely reduce reliance on CT scans and associated radiation exposure in selected patients. Our results support further investigation into the extended use of sonography during the follow-up phase. Prospective multicenter studies are recommended to establish the method's efficacy and to explore strategies for minimizing air presence postsurgery.
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Affiliation(s)
- Stefan Aspalter
- Department of Neurosurgery, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Matthias Gmeiner
- Department of Neurosurgery, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Stefan Gasser
- Institute of Neuroradiology, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Michael Sonnberger
- Institute of Neuroradiology, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Nico Stroh
- Department of Neurosurgery, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Philip Rauch
- Department of Neurosurgery, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Andreas Gruber
- Department of Neurosurgery, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
| | - Harald Stefanits
- Department of Neurosurgery, Kepler University Hospital Linz, Johannes Kepler University, Linz, Austria
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Amoo M, O'Cearbhaill RM, McHugh P, Henry J, O'Byrne K, Ben Husien M, Javadpour M. Derivation of a Clinical Score for Prediction of Recurrence Following Evacuation of Chronic Subdural Hematoma: A Retrospective Cohort Study at a National Referral Centre. World Neurosurg 2021; 154:e743-e753. [PMID: 34343685 DOI: 10.1016/j.wneu.2021.07.126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Chronic subdural hematoma (cSDH) is a common pathology, and recurrence is a common complication, which may be predicted by certain patient and radiologic factors. Empiric radiologic surveillance has been shown to convey no benefit. METHODS A retrospective review of a prospectively collated database was performed. Preoperative and postoperative noncontrast computed tomography scans were reviewed. Radiologic appearance, preoperative hematoma volume, patient age, presence of bilateral hematomas, maximal hematoma thickness, and therapeutic coagulopathy were assessed as predictors. Receiver operating characteristic curve analysis, logistic regression, and LASSO regression were used to select potential predictors. A multivariate model was then fitted, and a score was derived. RESULTS A total of 142 patients were included. Maximal hematoma thickness >12 mm (P = 0.02) and age >65 years (P = 0.01) were found to correlate with the likelihood of recurrence. Bilateral hematomas and a hyperdense or mixed density appearance were also identified on LASSO regression. Bilateral hematomas (P = 0.19), hyperdense or mixed density (P = 0.66), maximum thickness >12 mm (P = 0.01), and age >65 years (P = 0.02) were included in the multivariate model. A 6-point score was derived. A score of >3 had a sensitivity of 89% (95% confidence interval [CI] 78%-97%) and specificity of 26% (95% CI, 17%-34%) for predicting recurrence, with recurrence significantly more likely in patients with a score of 4-6 versus those with a score of 0-3 (P = 0.02). CONCLUSIONS Certain radiologic findings may predict the recurrence of cSDH following evacuation. The score derived may be useful in identifying patients who might benefit from routine postoperative surveillance imaging.
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Affiliation(s)
- Michael Amoo
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland.
| | - Roisin M O'Cearbhaill
- Department of Neuroradiology, Beaumont Hospital, Dublin, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Paul McHugh
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland
| | - Jack Henry
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland; School of Medicine, University College Dublin, Dublin, Ireland
| | - Kevin O'Byrne
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland
| | - Mohammed Ben Husien
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Mohsen Javadpour
- National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland; Royal College of Surgeons in Ireland, Dublin, Ireland; Department of Academic Neurology, Trinity College, Dublin, Ireland
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Younsi A, Riemann L, Habel C, Fischer J, Beynon C, Unterberg AW, Zweckberger K. Relevance of comorbidities and antithrombotic medication as risk factors for reoperation in patients with chronic subdural hematoma. Neurosurg Rev 2021; 45:729-739. [PMID: 34240268 PMCID: PMC8827308 DOI: 10.1007/s10143-021-01537-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 02/14/2021] [Accepted: 03/24/2021] [Indexed: 10/26/2022]
Abstract
In an aging Western society, the incidence of chronic subdural hematomas (cSDH) is continuously increasing. In this study, we reviewed our clinical management of cSDH patients and identified predictive factors for the need of reoperation due to residual or recurrent hematomas with a focus on the use of antithrombotic drugs. In total, 623 patients who were treated for cSDH with surgical evacuation between 2006 and 2016 at our department were retrospectively analyzed. Clinical and radiological characteristics and laboratory parameters were investigated as possible predictors of reoperation with univariate and multivariate analyses. Additionally, clinical outcome measures were compared between patients on anticoagulants, on antiplatelets, and without antithrombotic medication. In univariate analyses, patients on anticoagulants and antiplatelets presented significantly more often with comorbidities, were significantly older, and their risk for perioperative complications was significantly increased. Nevertheless, their clinical outcome was comparable to that of patients without antithrombotics. In multivariate analysis, only the presence of comorbidities, but not antithrombotics, was an independent predictor for the need for reoperations. Patients on antithrombotics do not seem to necessarily have a significantly increased risk for residual hematomas or rebleeding requiring reoperation after cSDH evacuation. More precisely, the presence of predisposing comorbidities might be a key independent risk factor for reoperation. Importantly, the clinical outcomes after surgical evacuation of cSDH are comparable between patients on anticoagulants, antiplatelets, and without antithrombotics.
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Affiliation(s)
- Alexander Younsi
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany.
| | - Lennart Riemann
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany
| | - Cleo Habel
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany
| | - Jessica Fischer
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany
| | - Christopher Beynon
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany
| | - Andreas W Unterberg
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany
| | - Klaus Zweckberger
- Department of Neurosurgery, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany
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Sadrameli SS, Davidov V, Sulhan S, Vaziri S, Hartman CJ, Hooten KG, Murad GJA. The utility of routine post-hospitalization CT imaging in patients with non-operative mild to moderate traumatic brain injury. Brain Inj 2021; 35:778-782. [PMID: 33998357 DOI: 10.1080/02699052.2021.1910999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Primary Objective: The purpose of this study was to determine the utility of CT imaging in patients with non-operative mild-moderate TBI with respect to changes in management.Methods: We conducted a retrospective analysis for 191 patients over a 5-year interval to examine whether follow-up CT initiated a change in management. We created a logistic regression model to incorporate different variables contributing to change in management.Results: Of 191 patients, 31 (16.2%) underwent a change in management. Change in management was associated with older age (65 yo vs. 55 yo, p = .011), diagnosis of subdural hematoma (p = .041), antiplatelet/anticoagulant therapy (p = .009), imaging performed (p = .16), and increased blood products on CT (p = <0.0001). For patients on antiplatelet/anticoagulant therapy, only those with worsening findings on CT required a change in management (p = .0002, 0.039). Surgical intervention was indicated in two patients.Conclusions: Limited clinical value exists in repeat CT scans for patients with mild TBI. Most patients with traumatic SAH, contusions, or asymptomatic patients should not have repeat imaging, as our study revealed only 2% of patients with positive CT finding and 0.6% requiring surgical intervention.
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Affiliation(s)
- Saeed S Sadrameli
- Department of Neurosurgery, Houston Methodist Neurological Institute, Houston, Texas, USA
| | | | - Suraj Sulhan
- Department of Neurosurgery, Houston Methodist Neurological Institute, Houston, Texas, USA
| | - Sasha Vaziri
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Cory J Hartman
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Kristopher G Hooten
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Florida, USA.,Department of Neurosurgery, Tripler Army Medical Center, Honolulu, Hawaii, USA
| | - Gregory J A Murad
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Florida, USA
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Nouri A, Gondar R, Schaller K, Meling T. Chronic Subdural Hematoma (cSDH): A review of the current state of the art. BRAIN AND SPINE 2021; 1:100300. [PMID: 36247395 PMCID: PMC9560707 DOI: 10.1016/j.bas.2021.100300] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Introduction Incidence of Chronic Subdural Hematoma (cSDH) is rising worldwide, partly due to an aging population, but also due to increased use of antithrombotic medication. Many recent studies have emerged to address current cSDH management strategies. Research question What is the state of the art of cSDH management. Material and methods Review. Results Head trauma, antithrombotic use and craniocerebral disproportion increase the risk of cSDH development. Most patients present with disorientation, GCS 13–15, and symptoms arising from cortical irritation and increased intracranial pressure. cSDH occurs bilaterally in 9–22%. CT allows assessment of cerebral compression (herniation, hematoma thickness, ventricle collapse, midline shift), hematoma age and presence of membranes, factors that ultimately determine treatment urgency and surgical approach. Recurrence remains the principle complication (9–33%), occurring more commonly with older age and bilateral cSDHs. Discussion and conclusion While incompletely understood, it is generally believed that injury in the dural cell layer results in bleeding from bridging veins, resulting in a hematoma formation, with or without a preceding hygroma, in a potential space approximating the junction between the dura and arachnoid. Neovascularization and leaking from the outer membrane are thought to propagate this process. Evidence that MMA embolization may reduce recurrence rates is a potentially exciting new treatment option, but also supports the theory that the MMA is implicated in the cSDH pathophysiology. The use of steroids remains a controversial topic without clear treatment guidelines. cSDH represents a common neurosurgical problem with burr-hole treatment remaining the gold standard, often in conjunction with subgaleal drains. MMA embolization to stop recurrence may represent an important evolution in understanding the pathophysiology of cSDH and improving treatment. Incidence of cSDH is rising, partly due to the aging population and increased antithrombotic use. cSDH occurs bilaterally in 9–22% of cases. Recurrence remains the principle complication and has been estimated at 9–33%. Risk factors for recurrence include old age and bilateral cSDHs. MMA embolization may reduce recurrence, but its efficacy and target population remain unclear.
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