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Ahn HS, Jeon HJ, Cho BM, Park SH. Single Neuroform Atlas stent: a reliable approach for treating complex wide-neck bifurcated aneurysms. Front Neurol 2024; 15:1391799. [PMID: 39099782 PMCID: PMC11295356 DOI: 10.3389/fneur.2024.1391799] [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: 02/26/2024] [Accepted: 07/01/2024] [Indexed: 08/06/2024] Open
Abstract
Background Treating wide-neck bifurcated cerebral aneurysms (WNBAs) using various techniques and new devices has shown favorable outcomes. However, endovascular coiling can be technically challenging when the aneurysm neck is incorporated into the parent vessel. Furthermore, although recent research has reported favorable outcomes of Neuroform Atlas stent (NAS)-assisted coiling, broad inclusion criteria have hampered precise evaluations of their effectiveness and safety for treating complex WNBAs. Therefore, this study evaluated whether the use of a single NAS is a safe and effective approach for treating complex WNBAs. Methods We treated 76 complex WNBAs (unruptured, n = 49; ruptured, n = 27) using single NAS-assisted coil embolization and retrospectively analyzed the clinical and angiographic outcomes. Results In a cohort of 68 patients (mean age, 58.3 ± 11.6 years; males n = 20, 29.4%; females, n = 48, 70.6%), 76 stents were successfully delivered to the target aneurysms, yielding a technical success rate of 98.6%. Complete occlusion was evident in 59 (77.6%) of 76 aneurysms, with neck remnants found in 16 (21.1%) and partial occlusion in 1 (1.3%). Treatment-related morbidities comprised one branch occlusion and one parenchymal hemorrhage. However, no new neurological symptoms of unruptured aneurysms were evident at discharge. The outcomes of 20 of the 27 ruptured aneurysms were favorable (Glasgow Outcome Scale scores of 4 or 5) at the final follow-up assessment (mean 12.2 [6-29] months), except for one initial subarachnoid hemorrhage. Post-treatment angiography revealed complete occlusion in 89.1%, neck remnants in 7.8%, and incomplete occlusion in 3.1% of the aneurysms. Approximately 88.2% of the patients were assessed at least once by follow-up diagnostic or magnetic resonance angiography (mean, 12.5 ± 4.3 [range, 6-29] months), with five (7.8%) minor and two (3.1%) major recurrences. Conclusion A single NAS is safe and effective for treating WNBAs incorporated into parent vessels.
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Affiliation(s)
| | - Hong Jun Jeon
- Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
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Tjerkstra MA, Wolfs AE, Verbaan D, Vandertop WP, Horn J, Müller MCA, Juffermans NP. A Systematic Review of Viscoelastic Testing in Patients with Subarachnoid Hemorrhage. World Neurosurg 2023; 175:102-112.e5. [PMID: 37004882 DOI: 10.1016/j.wneu.2023.03.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/26/2023] [Indexed: 04/03/2023]
Abstract
OBJECTIVE Bleeding and thromboembolic complications frequently occur after subarachnoid hemorrhage (SAH) and substantially contribute to poor outcome. Viscoelastic testing could be used for detection of coagulopathies after SAH. This review summarizes literature on the usefulness of viscoelastic testing to detect coagulopathy in patients with SAH and explores whether viscoelastic parameters are associated with SAH-related complications and clinical outcome. METHODS PubMed, Embase, and Google Scholar were systematically searched on August 18, 2022. Two authors independently selected studies that reported viscoelastic testing in patients with SAH and assessed the quality of studies using the Newcastle-Ottawa Scale or a previously reported framework for quality assessment. Data were meta-analyzed if methodologically possible. RESULTS The search yielded 19 studies (1160 patients with SAH). Pooling of data including all relevant studies was not possible for any of the outcome measurements because of methodological differences. Thirteen of 19 studies evaluated the association of coagulation profiles and SAH, of which 11 studies showed a hypercoagulable profile. Rebleeding was associated with platelet dysfunction, deep venous thrombosis was associated with faster clot initiation, and both delayed cerebral ischemia and poor outcome were associated with increased clot strength. CONCLUSIONS This explorative review shows that patients with SAH frequently have a hypercoagulable profile. Thromboelastography (TEG) and rotational thromboelastometry (ROTEM) parameters are associated with rebleeding, delayed cerebral ischemia, deep venous thrombosis, and poor clinical outcome after SAH; however, more research on the subject is needed. Future studies should focus on determining the optimal time frame and cutoff values for TEG or ROTEM to predict these complications.
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Affiliation(s)
- Maud A Tjerkstra
- Amsterdam UMC, University of Amsterdam, Department of Neurosurgery, Amsterdam Neuroscience, Amsterdam, the Netherlands.
| | - Anne E Wolfs
- Amsterdam UMC, University of Amsterdam, Department of Neurosurgery, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Dagmar Verbaan
- Amsterdam UMC, University of Amsterdam, Department of Neurosurgery, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - W Peter Vandertop
- Amsterdam UMC, University of Amsterdam, Department of Neurosurgery, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Janneke Horn
- Amsterdam UMC, University of Amsterdam, Department of Intensive Care, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Marcella C A Müller
- Amsterdam UMC, University of Amsterdam, Department of Intensive Care, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Nicole P Juffermans
- Amsterdam UMC, University of Amsterdam, Laboratory of Experimental Intensive Care and Anesthesiology, Amsterdam Neuroscience, Amsterdam, the Netherlands; Department of Intensive Care, OLVG Hospital, Amsterdam, the Netherlands
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Hvas CL, Hvas AM. Viscoelastic Testing in the Clinical Management of Subarachnoid Hemorrhage and Intracerebral Hemorrhage. Semin Thromb Hemost 2022; 48:828-841. [PMID: 36100233 DOI: 10.1055/s-0042-1756191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Subarachnoid hemorrhage (SAH) and intracerebral hemorrhage (ICH) are both debilitating and life-threatening incidents calling for immediate action and treatment. This review focuses on the applicability of viscoelastic testing (rotational thromboelastometry or thromboelastography [TEG]) in the management of SAH and ICH. A systematic literature search was performed in PubMed and EMBASE. Studies including patients with SAH or ICH, in which viscoelastic testing was performed, were identified. In total, 24 studies were included for analysis, and further subdivided into studies on SAH patients investigated prior to stenting or coiling (n = 12), ICH patients (n = 8) and studies testing patients undergoing stenting or coiling, or ischemic stroke patients undergoing thrombolysis or thrombectomy and developing ICH as a complication (n = 5). SAH patients had increased clot firmness, and this was associated with a higher degree of early brain injury and higher Hunt-Hess score. SAH patients with delayed cerebral ischemia had higher clot firmness than patients not developing delayed cerebral ischemia. ICH patients showed accelerated clot formation and increased clot firmness in comparison to healthy controls. Patients with hematoma expansion had longer clot initiation and lower platelet aggregation than patients with no hematoma expansion. During stent procedures for SAH, adjustment of antiplatelet therapy according to TEG platelet mapping did not change prevalence of major bleeding, thromboembolic events, or functional outcome. Viscoelastic testing prior to thrombolysis showed conflicting results in predicting ICH as complication. In conclusion, viscoelastic testing suggests hypercoagulation following SAH and ICH. Further investigation of the predictive value of increased clot firmness in SAH seems relevant. In ICH, the prediction of hematoma expansion and ICH as a complication to thrombolysis might be clinically relevant.
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Affiliation(s)
- Christine Lodberg Hvas
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Tranexamic acid – A narrative review for the emergency medicine clinician. Am J Emerg Med 2022; 56:33-44. [DOI: 10.1016/j.ajem.2022.03.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/07/2022] [Accepted: 03/14/2022] [Indexed: 02/06/2023] Open
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Hvas CL, Hvas AM. Hemostasis and Fibrinolysis following Aneurysmal Subarachnoid Hemorrhage: A Systematic Review on Additional Knowledge from Dynamic Assays and Potential Treatment Targets. Semin Thromb Hemost 2021; 48:356-381. [PMID: 34261149 DOI: 10.1055/s-0041-1730346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mortality after aneurysmal subarachnoid hemorrhage (aSAH) is augmented by rebleeding and delayed cerebral ischemia (DCI). A range of assays evaluating the dynamic process of blood coagulation, from activation of clotting factors to fibrinolysis, has emerged and a comprehensive review of hemostasis and fibrinolysis following aSAH may reveal targets of treatment. We conducted a systematic review of existing literature assessing coagulation and fibrinolysis following aSAH, but prior to treatment. PubMed, Embase, and Web of Science were searched on November 18, 2020, without time boundaries. In total, 45 original studies were eventually incorporated into this systematic review, divided into studies presenting data only from conventional or quantitative assays (n = 22) and studies employing dynamic assays (n = 23). Data from conventional or quantitative assays indicated increased platelet activation, whereas dynamic assays detected platelet dysfunction possibly related to an increased risk of rebleeding. Secondary hemostasis was activated in conventional, quantitative, and dynamic assays and this was related to poor neurological outcome and mortality. Studies systematically investigating fibrinolysis were sparse. Measurements from conventional or quantitative assays, as well as dynamic fibrinolysis assays, revealed conflicting results with normal or increased lysis and changes were not associated with outcome. In conclusion, dynamic assays were able to detect reduced platelet function, not revealed by conventional or quantitative assays. Activation of secondary hemostasis was found in both dynamic and nondynamic assays, while changes in fibrinolysis were not convincingly demonstrable in either dynamic or conventional or quantitative assays. Hence, from a mechanistic point of view, desmopressin to prevent rebleeding and heparin to prevent DCI may hold potential as therapeutic options. As changes in fibrinolysis were not convincingly demonstrated and not related to outcome, the use of tranexamic acid prior to aneurysm closure is not supported by this review.
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Affiliation(s)
- Christine Lodberg Hvas
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Anne-Mette Hvas
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Thrombosis and Hemostasis Research Unit, Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
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Wang X, Xing H, Cai J, Jin D, Chen Y, Cui Y, Ding S, Wan J, Pan Y, Mao G, Zhao B. The safety and efficacy of the LVIS stent for the treatment of ruptured intracranial aneurysms within 24 hours: A multicenter retrospective study. Clin Neurol Neurosurg 2020; 197:106117. [PMID: 32745790 DOI: 10.1016/j.clineuro.2020.106117] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Stent-assisted coiling is increasingly used in the treatment of acutely ruptured intracranial aneurysms. However, the optimal timing of the stent-assisted coiling remains unknown. We aimed to investigate the safety and efficacy of the Low Profile Visualized Intraluminal Support (LVIS) stent for ruptured aneurysms treatment within 24 h comparing to the treatment between 25 and 72 h of symptom onset. PATIENTS AND METHODS We conducted a multicenter retrospective study on 110 consecutive patients with ruptured intracranial aneurysms. These patients were treated with LVIS stent within 72 h in four tertiary hospitals between January 2017 and December 2017. The timing of treatment was grouped into the treatment within 24 h and the treatment between 25 and 72 h. Baseline characteristics, periprocedural complications, angiographic results, and clinical outcomes were compared between the two groups. RESULTS A total of 101 patients were included. 49 (48.5 %) patients were treated within 24 h and 52 (51.5 %) within between 25 and 72 h. Periprocedural complications occurred in 2 (4.1 %) patients treated within 24 h compared with those in 10 (19.2 %) treated between 25-72 h (P = 0.032). No early rebleeding occurred in both groups. 45 (91.8 %) of 49 aneurysms had complete occlusion on immediate angiography compared with 46 (88.5 %) of 52 aneurysms had complete occlusion. 2 (2.0 %) aneurysms were retreated. The clinical outcomes and angiographic results did not differ between the two groups. CONCLUSIONS The LVIS stent-assisted coiling may be safe and effective in the treatment of selected patients with ruptured aneurysms within 24 h of symptom onset.
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Affiliation(s)
- Xianggan Wang
- Department of Neurosurgery, the Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Haixia Xing
- Department of Pathology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Jing Cai
- Department of Neurosurgery, Linyi People's Hospital, Linyi, 276003, China
| | - Dianshi Jin
- Department of Neurosurgery, Dalian Central Hospital, Dalian 116033, China
| | - Yongchun Chen
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Yudi Cui
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Shenghao Ding
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Jieqing Wan
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yaohua Pan
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Guohua Mao
- Department of Neurosurgery, the Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
| | - Bing Zhao
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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