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Featured researches published by Tetsuya Yokouchi.


Acta neurochirurgica | 2011

Intra-arterial Administration of Fasudil Hydrochloride for Vasospasm Following Subarachnoid Haemorrhage: Experience of 90 Cases

Satoshi Iwabuchi; Tetsuya Yokouchi; Morito Hayashi; Kenichiro Sato; Norihiko Saito; Y. Hirata; Junichi Harashina; Haruo Nakayama; Masaki Akahata; Keisuke Ito; Hitoshi Kimura; Kazuya Aoki

BACKGROUND we investigated the clinical efficacy of intra-arterial administration of fasudil hydrochloride for cerebral vasospasm. METHOD we reviewed 90 cases treated with intra-arterial administration of fasudil hydrochloride between August 1998 and April 2009 and investigated the clinical efficacy for cerebral vasospasm. FINDINGS angiographic improvement of vasospasm was noted in all procedures. Eight had ischemic lesion on CT at discharge in Group A, which included 39 patients who presented angiographic and symptomatic vasospasm. However, 4 (50%) of these eight were recovered with a condition of GR. No patients showed ischemic lesion on CT in Group B, which included 51 patients who presented angiographic vasospasm without symptoms. Two (3.3%) of 59 patients who presented angiographic vasospasm without symptoms at the initial follow-up angiography had ischemic lesion on CT at discharge. The 1-year follow-up showed 78.9% of GR. No patient showed any adverse effects resulting from intra-arterial administration of fasudil hydrochloride. CONCLUSION intra-arterial administration of fasudil hydrochloride was an effective and safe management technique for vasospasm.


Acta neurochirurgica | 2015

Prophylactic Intra-arterial Administration of Fasudil Hydrochloride for Vasospasm Following Subarachnoid Haemorrhage

Satoshi Iwabuchi; Morito Hayashi; Tetsuya Yokouchi; Kenichiro Sato; Haruo Nakayama; Junichi Harashina; Junya Iwama; Masashi Ishii; Yu Hiramoto; Nozomi Hirai; Y. Hirata; Norihiko Saito; Keisuke Ito; Hitoshi Kimura; Kazuya Aoki

PURPOSE We evaluated patients treated with prophylactic intra-arterial administration of fasudil hydrochloride (IAF) after subarachnoid haemorrhage (SAH). MATERIALS AND METHODS Between August 1998 and December 2012, 92 patients with aneurysmal SAH were treated with IAF for angiographic vasospasm without ischemic symptoms after their follow-up angiography. Patients comprised 50 women and 42 men, aged 24-83 (mean 56.6) years. IAF consisted of 15 mg of fasudil hydrochloride dissolved in 20 ml physiological saline and injected through a catheter during approximately 15 min, after diagnostic angiography. The clinical outcome was evaluated using the Glasgow Outcome Scale (GOS) at discharge and ischemic lesions resulting from vasospasm were assessed on computed tomography (CT) scan at discharge. RESULTS Forty-eight patients underwent surgical clipping and 44 patients underwent endovascular coiling. Angiographic improvement was observed in all patients (100 %). At discharge, 76 (83.0 %) of 92 patients showed good recovery on GOS. Nine patients developed progression of delayed ischemic neurological deficits (DIND) and three of these patients had ischemic lesions on CT scans. No patient had any significant changes in vital signs or any other adverse effects resulting from IAF. CONCLUSION IAF therapy was safe and effective for patients with vasospasm following SAH. Prophylactic IAF therapy may prevent symptomatic vasospasm.


Archive | 2008

Automated voxel-based analysis of brain perfusion SPECT for vasospasm after subarachnoid haemorrhage

Satoshi Iwabuchi; Tetsuya Yokouchi; Hitoshi Terada; Morito Hayashi; Hitoshi Kimura; Arata Tomiyama; Y. Hirata; Norihiko Saito; Junichi Harashina; Haruo Nakayama; Kenichiro Sato; K. Hamazaki; Kazuya Aoki; Hirotsugu Samejima; Morikazu Ueda

Background We evaluated regional cerebral blood flow (rCBF) during vasospasm after subarachnoid haemorrhage (SAH) using automated voxel-based analysis of brain perfusion single-photon emission computed tomography (SPECT).


Neurologia Medico-chirurgica | 2006

Intra-arterial Administration of Fasudil Hydrochloride for Vasospasm Following Subarachnoid Hemorrhage

Satoshi Iwabuchi; Tetsuya Yokouchi; Morito Hayashi; Hideo Uehara; Morikazu Ueda; Hirotsugu Samejima


Neurologia Medico-chirurgica | 1990

New Screening System for Unruptured Cerebral Aneurysms : Combination of an Expert System and DSA Examination

Hirotsugu Samejima; Yukio Ushikubo; T. Mizokami; Kazuya Aoki; Satoshi Iwabuchi; Keiichiro Kasai; Takashi Tsuzuki; Yasuyuki Yamazaki; Hiroyuki Yanai; Tetsuya Yokouchi; Nobuo Yoshii


Laser therapy | 1990

EFFECT OF DIODE LASER FOR PAIN: A CLINICAL STUDY ON DIFFERENT PAIN TYPES

T. Mizekami; Nobuo Yoshii; Y. Uhikubo; Takao Sato; Satoshi Iwabuchi; Kazuya Aoki; Takashi Tsuzuki; Keiichiro Kasai; Hiroyuki Yanai; Tetsuya Yokouchi; Hirotsugu Samejima; F. Yamada


Surgery for Cerebral Stroke | 2011

Retinal Circulation before and after Carotid Artery Stenting

Morito Hayashi; Kenichiro Sato; Tetsuya Yokouchi; Jyun-Ichi Harashina; Haruo Nakayama; Masaki Akahata; Norihiko Saito; Youko Hirata; Keisuke Ito; Kazuya Aoki; Yoshiyuki Kita; Masato Nakamura; Satoshi Iwabuchi


Surgery for Cerebral Stroke | 2002

Dural Arteriovenous Fistula Presenting with Brain Stem Hemorrhage: A Report of 2 Cases.

Satoshi Iwabuchi; Tetsuya Yokouchi; Morito Hayashi; Keisuke Ito; Go Nakagawa; Morikazu Ueda; Hirotsugu Samejima; Hitoshi Terada


Journal of Stroke & Cerebrovascular Diseases | 2017

The results of thrombectomy in the elderly patients

Morito Hayashi; Satoshi Iwabuchi; Masashi Ishii; Kenichiro Sato; Masashi Ikota; Satoshi Fujita; Jyunya Iwama; Nozomi Hirai; Norihiko Saito; Kazuya Aoki; Tetsuya Yokouchi


Surgery for Cerebral Stroke | 2005

Endovascular Treatment of Ruptured Cerebral Aneurysms Using Guglielmi Detachable Coils for Elderly Patients

Satoshi Iwabuchi; Tetsuya Yokouchi; Morito Hayashi; Arata Tomiyama; Kazuya Aoki; Morikazu Ueda; Hirotsugu Samejima

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