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22 results on '"Ioku, Tetsuya"'

9. Present State of the Infection Protection System and Effects of a Change in the In-Hospital System in Endovascular Treatment for Large Vessel Occlusion in Acute Stroke Patients at a Single Institution

Author

Imai, Keisuke, primary, Tokuda, Naoki, additional, Yamamoto, Atsushi, additional, Ioku, Tetsuya, additional, Cho, Masanori, additional, Sai, Toshi, additional, Menjo, Kanako, additional, Yamada, Takehiro, additional, and Horiguchi, Go, additional

Published
2022
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15. Abstract TP25: Features of Patients With Stroke Receiving Intracranial Balloon Angioplasty for Secondary Prevention in Comparison to Rescue Recanalization

Author

Itsukage Masahiro, Imai Keisuke, Ioku Tetsuya, Menjo Kanako, Yamamoto Atsushi, Yamazaki Hidekazu, Cho Masanori, Tsutou Kazuma, Hamanaka Masashi, and Sai toshi

Subjects
Advanced and Specialized Nursing, Secondary prevention, medicine.medical_specialty, business.industry, medicine.medical_treatment, Percutaneous transluminal balloon angioplasty, Balloon, medicine.disease, Feature (computer vision), Internal medicine, Angioplasty, medicine, Cardiology, Neurology (clinical), Intracranial Atherosclerosis, Cardiology and Cardiovascular Medicine, business, Stroke
Abstract

Background: Susceptibility to intracranial atherosclerosis is a unique feature of stroke in Asian patients. Intracranial percutaneous transluminal balloon angioplasty/stenting (IC-PTAS) is an important therapy for secondary prevention and rescue in such patients. Objective: The purpose of this study is to clarify features of Japanese patients with stroke receiving IC-PTAS for secondary prevention or for rescue recanalization. Methods: Medical records of 116 consecutive stroke patients treated with IC-PTAS at our hospital from April 2006 to May 2018 were retrospectively reviewed. The patients were divided into secondary prevention (P) and rescue (R) groups based on the purpose of IC-PTAS. Backgrounds, procedures, andtechnical and clinical outcomes were compared between the groups. Results: In groups P (n=60, male=40) and R (n=56, male=35), the mean ages were 70 and 72 years, the median times from ischemic events to IC-PTAS were 21 and 0.5 days, the mean stenotic ratios were 84.6% and 97.9%, the number of cases with morphology suitable for IC-PTAS (modified Mori class A or B1) were 35 and 8, and the distributions of treated vessels (extradural ICA, intradural ICA, MCA, BA, VA, others) were 31, 6, 11, 5, 5, 2, and 4, 14, 24, 6, 5, 3, respectively. In groups P and R, stents were deployed in 26 (43%) and 23 (41%) cases, technical success was achieved in 60 (100%) and 48 (86%) cases, the mean residual stenotic ratios were 27.6% and 40.3%, and there were major complications in 4 (7%) and 6 (12%) cases, stroke within 30 days in 4 (7%) and 6 (12%) cases, and symptomatic intracranial hemorrhage in 0 and 1 cases, respectively. Conclusion: Stroke patients receiving IC-PTAS for secondary prevention in Japan have a longer interval between the ischemic event and the procedure and a higher number of safer lesions, such as those with a lower stenotic ratio, suitable morphology, and an intradural site, compared to patients who receive this treatment for rescuerecanalization. This might result in favorable technical and clinical outcomes for patients receiving IC-PTAS in Japan.

Published
2019

16. Abstract TP31: Endovascular Thrombectomy for Patients With Acute Stroke With Low Aspect Score

Author

Yamamoto Atsushi, Hamanaka Masashi, Itsukage Masahiro, Sai toshi, Imai Keisuke, Yamazaki Hidekazu, Cho Masanori, Menjo Kanako, Tsuto Kazuma, and Ioku Tetsuya

Subjects
Advanced and Specialized Nursing, medicine.medical_specialty, business.industry, Medicine, Neurology (clinical), Cardiology and Cardiovascular Medicine, business, Endovascular therapy, Acute stroke, Surgery
Abstract

Background: It is generally believed that patientswith acute stroke with ASPECT score (ASPECTS) ≥6 benefit from endovascular thrombectomy.OBJECTIVE:The purpose of the study was to examine the benefit of endovascular thrombectomy for stroke patients with low ASPECTS. Materials and Methods: Among 425 consecutive stroke patients treated with endovascular recanalization for occlusion of the anterior circulation at our hospital from March 2007 to June 2018, those with ASPECTS≤6 were included in the study. These patients were classified into three groups based on ASPECTS of 6 (APS6), 5 (APS5), and ≤4 (APS4). Preprocedural factors, procedures, and angiographic and clinical outcomes were compared among the three groups. Results: A total of 125 patients were included in the analysis, with 48, 39, and 38 in the APS6, APS5, and APS4 groups, respectively. Median age (75, 77, and 80 years), median DWI-ASPECTS (5, 3, and 3), sparing of pyramidal tract (33, 20, and 8), median baseline NIHSS (21, 23, and 23), occluded site (ICA-MCA: 16-32, 16-23, and 19-19), median onset to door time (128, 204, and 220 min), median door to puncture time (98, 74, and 74 min), intravenous rt-PA (8, 6, and 5), median door to recanalization time (94, 76, and 90 min), median onset to recanalization time (326, 350, and 399 min), complete recanalization (TICI 2b/3: 38, 30, and 24), and median onset to recanalization time (326, 350, and 399 min) did not differ significantly among the three groups. However, the APS4 group had a lower favorable outcome rate (mRS 0-2 at 3 months: 25%, 21%, and 7.8%) and a higher cerebral herniation rate (6.3%, 5.1%, and 18%). Conclusions: Caution is required regarding the indication for endovascular thrombectomy in stroke patients with ASPECTS≤4 because these patients may have a lower favorable outcome rate and a higher rate of cerebral herniation.

Published
2019

17. Angiographical Features of Acute Stroke Patients with Carotid Artery Embolic Occlusion Recanalized by Suction with Syringe via Balloon Guiding Catheter

Author

Yamazaki, Hidekazu, primary, Imai, Keisuke, additional, Hamanaka, Masashi, additional, Itsukage, Masahiro, additional, Tsuto, Kazuma, additional, Yamamoto, Atsushi, additional, Ioku, Tetsuya, additional, Yamada, Takehiro, additional, Nakamura, Takuma, additional, Takezawa, Hidesato, additional, and Tokuda, Naoki, additional

Published
2019
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21. A Case of Acute Embolic Occlusion of the Brachiocephalic Artery Recanalized with Endovascular Thrombectomy

Author

Okamoto, Takanari, primary, Imai, Keisuke, additional, Hamanaka, Masashi, additional, Yamazaki, Hidekazu, additional, Itsukage, Masahiro, additional, Tsuto, Kazuma, additional, Yamamoto, Atsushi, additional, Ioku, Tetsuya, additional, Nakamura, Takuma, additional, Kimura, Masayoshi, additional, Kitani, Kimitoshi, additional, and Umezawa, Kunihiko, additional

Published
2017
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22. A Case of Mechanical Thrombectomy with Stent-retriever Avoiding Vessel Linearization for Occluded Tortuous Distal Branch of Middle Cerebral Artery (M2)

Author

Ioku, Tetsuya, primary, Imai, Keisuke, additional, Hamanaka, Masashi, additional, Yamazaki, Hidekazu, additional, Itsukage, Masahiro, additional, Tsuto, Kazuma, additional, Yamamoto, Atsushi, additional, Nakamura, Takuma, additional, Takegami, Tetsuro, additional, Yamada, Takehiro, additional, and Ikeda, Eito, additional

Published
2016
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