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Misaki K, Kamide T, Uno T, Tsutsui T, Nambu I, Nakada M. Evaluation of a scoring system to assess proficiency in cerebral angiography for neuroendovascular surgery education. Heliyon 2023; 9:e13249. [PMID: 36755597 PMCID: PMC9900261 DOI: 10.1016/j.heliyon.2023.e13249] [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: 09/25/2022] [Revised: 11/26/2022] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
Objective Cerebral angiography is indispensable for endovascular neurosurgeons. However, there is no established system to evaluate the competency of trainees. We established a scoring system and statistically analyzed its characteristics. Methods Endovascular neurosurgeons scored the operators of 177 cerebral angiography based on ten evaluation items. Preoperative explanation, device selection, and device assembly were classified as "preparation," communication with the patient, radiation protection and angiography system as "attention," and catheter operation, blood loss, procedure completion, and sheath insertion as "skill". The sum of the scores were compared using the Mann-Whitney test according to the status of the operator (trainee (TR), neurosurgeon (NS), or endovascular neurosurgeon (EVNS)). Results The highest average for each item was 0.89 for communication, and the lowest was 0.68 for catheter operation. The mean ± standard deviation of the total score was 7.82 ± 2.02, and scores by status were 7.08 ± 2.12 for TR, 8.32 ± 1.35 for NS, and 9.33 ± 1.20 for EVNS with significant differences among each status (p < 0.05). The sum scores of the preparation, attention, and skill sections also showed significant differences between each status except between NS and EVNS in the preparation section and TR and NS in the skill section (p < 0.05). Conclusions There were significant differences in the total score between statuses, suggesting that the scoring system may be an indicator of proficiency in cerebral angiography. It was suggested that dividing each item into preparation, attention, and skill sections may indicate the characteristics of proficiency.
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Affiliation(s)
- Kouichi Misaki
- Corresponding author. Department of Neurosurgery, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa 920-8641, Japan.
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Shim DH, Do Y, Do JK, Youn SW. Delayed Rupture of an Anterior Communicating Artery Pseudoaneurysm Caused by Distal Occlusion Thrombectomy Using a Stent Retriever: A Case Report and Mechanism of Injury. Neurointervention 2022; 17:121-125. [PMID: 35535378 PMCID: PMC9256472 DOI: 10.5469/neuroint.2022.00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 04/15/2022] [Indexed: 12/03/2022] Open
Abstract
We report a case of delayed rupture of an anterior communicating artery (Acom) pseudoaneurysm following mechanical thrombectomy (MT) of a distal artery occlusion using a stent retriever. An elderly patient with right hemiparesis showed left proximal internal cerebral artery and middle cerebral artery occlusions. During MT, a fragmented thrombus moved to the anterior cerebral artery (ACA). A stent retriever was deployed to the occluded ACA, and the Acom and proximal ACA segment were significantly straightened. Additionally, we attempted a blind exchange mini-pinning (BEMP) technique, but a subarachnoid hemorrhage (SAH) occurred. Bleeding was almost entirely absorbed 9 days after the procedure, but the SAH recurred at 20 days, and computed tomography angiography revealed a new pseudoaneurysm formation in the Acom. We suggest that the proposed mechanism of pseudoaneurysm formation was likely due to the dislocation and avulsion of the Acom perforators when the ipsilateral ACA was pushed and pulled during MT.
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Affiliation(s)
- Dong-Hyun Shim
- Department of Neurology, Daegu Catholic University Medical Center, Daegu, Korea
| | - Youngrok Do
- Department of Neurology, Daegu Catholic University Medical Center, Daegu, Korea
| | - Jin Kuk Do
- Department of Neurology, Daegu Catholic University Medical Center, Daegu, Korea
| | - Sung Won Youn
- Department of Radiology, Daegu Catholic University Medical Center, Daegu, Korea
- Correspondence to: Sung Won Youn, MD, PhD Department of Radiology, Daegu Catholic University Medical Center, 33 Duryugongwon-ro 17-gil, Nam-gu, Daegu 42472, Korea Tel: +82-53-650-4328 Fax: +82-53-650-4339 E-mail:
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Li Z, Liu P, Zhang L, Zhang Y, Fang Y, Xing P, Huang Q, Yang P, Liu J. Y-Stent Rescue Technique for Failed Thrombectomy in Patients With Large Vessel Occlusion: A Case Series and Pooled Analysis. Front Neurol 2020; 11:924. [PMID: 32973671 PMCID: PMC7481477 DOI: 10.3389/fneur.2020.00924] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/17/2020] [Indexed: 11/13/2022] Open
Abstract
Objective: Y-stent thrombectomy is a recent rescue technique for failed thrombectomy in patients with emergent large vessel occlusion. We presented case series of using Y-stent rescue technique at different sites and investigate its feasibility and safety through pooled analysis of collected case report or series. Methods: Twenty-eight cases were screened from stroke databank who underwent thrombectomy between January 2015 and June 2019. Clinical, procedural, and follow-up data were investigated and pooled analysis of published literature was analyzed. Results: The occlusion sites include carotid terminus in 14 patients; siphon segment in 3; middle cerebral artery (MCA) in 4; basilar terminus in 7. The overall recanalization rate reached 85.7% (arterial occlusive lesion score 2-3); and final reperfusion rate 85.7% (modified Thrombolysis in Cerebral Infarction 2b-3). After literature review, totally, 52 cases were included. Good clinical outcome was achieved in 26 (50%) and mortality in 7 (17.3%). There is no significant difference on the SAH complication at different sites. Literature review shows no difference between each site in the reperfusion and complication rate. Conclusion: Our case series results suggest that high recanalization rate can be effectively achieved with Y-stent rescue technique for patients with refractory emergent large vessel occlusion. The safety of using this technique at different sites needs further investigation for patients.
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Affiliation(s)
- Zifu Li
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Peng Liu
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Lei Zhang
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yongwei Zhang
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yibin Fang
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Pengfei Xing
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Qinghai Huang
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Pengfei Yang
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jianmin Liu
- Neurosurgery Department, Changhai Hospital, Second Military Medical University, Shanghai, China
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Tamura T, Ota N, Okada Y, Valenzuela J, Noda K, Kamiyama H, Tanikawa R. Sylvian Hematoma Removal after the Stent-Retriever Thrombectomy Accompanied by Arteriole Avulsion: Case Report. JOURNAL OF NEUROENDOVASCULAR THERAPY 2020; 15:94-99. [PMID: 37502806 PMCID: PMC10370804 DOI: 10.5797/jnet.cr.2020-0105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/28/2020] [Indexed: 07/29/2023]
Abstract
Objective We describe an instructive case of post-thrombectomy subarachnoid hemorrhage (PTSAH) by sylvian hematoma removal. Case Presentations An 83-year-old female presented with an acute cardiogenic right M1 occlusion. After the thrombectomy with combined stent retriever and aspiration technique with total five passes, TICI 2b reperfusion was achieved; however, CT imaging displayed subarachnoid hematoma (SAH) along the right sylvian fissure. Throughout the approach, contrast extravasation was not confirmed. The SAH grew up to become the sylvian hematoma; therefore, removal of the sylvian hematoma was conducted. An abrupt arteriole tear around the distal M2 of parietal artery was confirmed as bleeding point and those teared arteriole's stumps were electrically coagulated not to re-bleed. Conclusion We suggest that the PTSAH is possible even in invisible-extravasation cases and the sylvian hematoma removal is effective to elucidate the etiology of the PTSAH, and is a reliable method to prevent the re-bleeding and is anticipated to improve the prognosis. Craniotomy is required for medically resistant PTSAH after thrombectomy, and avulsion of the pial artery can be the cause.
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Affiliation(s)
- Takamitsu Tamura
- Department of Neurosurgery, Stroke Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | - Nakao Ota
- Department of Neurosurgery, Stroke Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | - Yasuaki Okada
- Department of Neurosurgery, Stroke Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | | | - Kosumo Noda
- Department of Neurosurgery, Stroke Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | - Hiroyasu Kamiyama
- Department of Neurosurgery, Stroke Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
| | - Rokuya Tanikawa
- Department of Neurosurgery, Stroke Center, Sapporo Teishinkai Hospital, Sapporo, Hokkaido, Japan
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Imahori T, Okamura Y, Sakata J, Shose H, Yamanishi S, Kohmura E. Delayed Rebleeding from Pseudoaneurysm After Mechanical Thrombectomy Using Stent Retriever Due to Small Artery Avulsion Confirmed by Open Surgery. World Neurosurg 2019; 133:150-154. [PMID: 31589986 DOI: 10.1016/j.wneu.2019.09.141] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/25/2019] [Accepted: 09/26/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Pseudoaneurysm after mechanical thrombectomy (MT) is rare but is one of the potential complications associated with endovascular procedures. There is limited information regarding its mechanism of formation and the potential risk of delayed bleeding. CASE DESCRIPTION An 84-year-old woman was admitted to our institution with right hemiplegia and global aphasia. Magnetic resonance imaging and angiography revealed occlusion of the M2 segment of the left middle cerebral artery with subtle acute ischemic change in this territory. After initiating intravenous thrombolysis, MT was performed for persistent occlusion of the M2. Successful revascularization was finally achieved with a single pass of a Trevo XP 3 mm × 20 mm stent retriever; significant deviation of the vessel occurred during withdrawal of the stent retriever. Anticoagulation was initiated after confirming resolution of a small amount of postprocedural subarachnoid hemorrhage 1 day after the procedure. However, 4 days after the procedure, computed tomography and angiography revealed a massive sylvian hematoma with de novo formation of a small pseudoaneurysm at the site where the stent retriever was deployed. Open surgery revealed a small artery avulsion at this site. The lesion was closed by microsurgical suturing. CONCLUSIONS Angiographic and intraoperative findings showed that the mechanism of formation of the pseudoaneurysm was small artery avulsion resulting from deviation of the vessel during withdrawal of the stent retriever. When performing MT in a tortuous distal vessel, the possibility of small artery avulsion should be kept in mind to both prevent and manage critical hemorrhagic complications.
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Affiliation(s)
| | - Yusuke Okamura
- Department of Neurosurgery, Toyooka Hospital, Hyogo, Japan
| | - Junichi Sakata
- Department of Neurosurgery, Toyooka Hospital, Hyogo, Japan
| | - Hiroyasu Shose
- Department of Neurosurgery, Toyooka Hospital, Hyogo, Japan
| | | | - Eiji Kohmura
- Department of Neurosurgery, Kobe University Graduate School of Medicine, Hyogo, Japan
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Misaki K, Uchiyama N, Inaki A, Kinuya S, Nambu I, Kamide T, Mohri M, Hayashi Y, Nakada M. Objective evaluation of cerebrovascular reactivity for acetazolamide predicts cerebral hyperperfusion after carotid artery stenting: Comparison with region of interest methods. J Neuroradiol 2018. [PMID: 29524498 DOI: 10.1016/j.neurad.2018.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND PURPOSE Hemodynamic impairments are considered risk factors of cerebral hyperperfusion after carotid artery stenting (CAS); measurement by Single-photon emission computed tomography (SPECT) using a subjective region of interest (ROI) method lacks consistency and reproducibility. MATERIALS AND METHODS The present study compared objective perfusion analysis (stereotactic extraction estimation [SEE] method) with the ROI method for preoperative SPECT to predict the hyperperfusion phenomenon (HPP) after CAS. Preoperative resting asymmetry index (cerebral blood flow [CBF] ratio from the affected to unaffected hemisphere) and cerebrovascular reactivity (CVR) to acetazolamide were measured by N-isopropyl-p-[123I]-iodoamphetamine SPECT using the SEE and ROI method in 84 patients. CBF was also measured the day after CAS. Perfusion data with the highest area under the curve (AUC) by receiver-operating characteristic (ROC) analysis was considered a perfusion risk factor of HPP. Multivariate analyses for clinical characteristics and perfusion risk factors were performed to determine predictors of HPP. RESULTS The HPP was observed in 10 patients (11.9%). Female sex, contralateral stenosis, and degree of stenosis were significantly associated with HPP development on univariate analysis, and symptomatic stenosis was not found to be a significant factor. On SPECT analysis, CVR in the MCA area by SEE method had the highest AUC (0.981). Multivariate analysis showed that CVR in the MCA area was a significant predictor of HPP (P=0.041). To predict hyperperfusion, the ROC curve of the CVR showed a cutoff value of -0.60%, sensitivity of 94.6%, and specificity of 100% (P<0.001). CONCLUSIONS Objective SEE method had better a predictive capability than ROI method to identify risk of hyperperfusion after CAS.
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Affiliation(s)
- Kouichi Misaki
- Department of Neurosurgery, Kanazawa University, Kanazawa, Japan.
| | - Naoyuki Uchiyama
- Department of Neurosurgery, Kanazawa University, Kanazawa, Japan
| | - Anri Inaki
- Department of Nuclear Medicine, Kanazawa University, Kanazawa, Japan
| | - Seigo Kinuya
- Department of Nuclear Medicine, Kanazawa University, Kanazawa, Japan
| | - Iku Nambu
- Department of Neurosurgery, Kanazawa University, Kanazawa, Japan
| | - Tomoya Kamide
- Department of Neurosurgery, Kanazawa University, Kanazawa, Japan
| | - Masanao Mohri
- Department of Neurosurgery, Kanazawa University, Kanazawa, Japan
| | - Yasuhiko Hayashi
- Department of Neurosurgery, Kanazawa University, Kanazawa, Japan
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