64 results on '"Kato, Takahiro"'
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2. Structure and properties of nano-carbon filled PLLA/PDLA/HDPE composites
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Kato, Takahiro, akasaka, shuichi, and ASAI, SHIGEO
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- 2021
3. Teacher training aiming for conversion to inquisitive learning - Curriculum Development focused on their own inquiry of Professional School for\nTeacher Education
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MATSUDA, Toshiko, KATO, Takahiro, KOIKEDA, Mitsuru, NAKAMURA, Masae, and YACHI, Hinoo
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- 2019
4. Automatic Operation of the JAXA 2 m by 2 m Continuous Transonic Wind Tunnel with Suction Control of the Plenum Chamber
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Nagai, Shinji, Karasawa, Toshio, Magome, Makoto, Mashiro, Jin, Ono, Hiroshi, Yoshimoto, Akira, Ikeda, Yoichi, Ubukata, Yu, Kato, Takahiro, and Sakamoto, Yasuyuki
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Transonic ,Wind Tunnel ,Suction Blower ,Automatic Operation - Abstract
連続回流式であるJAXA 2m×2m遷音速風洞は, 従来は主送風機, 補助送風機, 測定部の制御装置を3名の熟練運転員が運転操作していた. 高亜音速以上では, 主送風機の回転数だけではなく, 測定胴の風路制御と連動して補助送風機による測定部の抽気量を制御することが必要となる. 起動後に再試験条件であれば, ワンマン自動運転できることを目指し, これら3つの制御装置を更新改修することになった. そこで, まずマッハ数と供試模型に依存して広範囲となる補助送風機の運転点について考察した. そして, これらの運転点の移動方法の簡略自動化と, マッハ数自動制御の改善を図った. 改めて補助送風機のチョーク領域を調査した結果と, 自動運転の結果を示す. 更新改修後は, 全てのマッハ数範囲に渡り, データ精度と生産性が向上した., The JAXA 2 m by 2 m continuous closed-circuit transonic wind tunnel were operated by three operators of the three control systems of the main blower, the test section and the suction blower. At high Mach numbers, it is necessary to control suction rate of the test section by the suction blower in accordance with nozzle Mach number at the test section as well as rotation speed of the main blower. These three control systems were replaced or modified for one-man automatic operation at the re-test conditions if it is once started. Then, the operation points of the suction blower were discussed since they are widely spread according to the Mach number and the test model. The automatic procedures for changing these operation points and modification of the Mach number control were proposed. The choking area of the suction blower were also investigated, and the results of the automatic operation are shown. After the replacement, better productivity and accuracy of the data in the whole range of Mach numbers were achieved., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1830014000, レポート番号: JAXA-RM-18-005
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- 2019
5. Peculiarity of the Approaches and the Problem for Upgrading Teaching Skills by Using I CT ~A Study based on the survey result of teachers from Ishikawa~
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Kato, Takahiro and Tamukai, Miyu
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段階モデル ,半構造化インタビュー ,ICT活用指導力 ,ICT活用経験 - Abstract
石川県にて日常的に ICT 活用を行 う教員に対して,ICT 活用指導力の現状 とICT 活用指導力向上への取組みや課題を明らかにするためのアンケート調査,インタビュー調査を行った。 ICT 活用経験の浅い若手教員は,機器を「活用すること」に課題を感 じ,文献調査や研究会で学ぶことで解決しようとしていた。一方, ICT活用経験のある教員は「活用すること」は前提として,活用の仕方は効果的かどうかに課題を感じていた。双方の結果から,若手教員が ICT 活用指導力を向上させるために必要とされる取組みや視点を考察し,提案を行う。
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- 2018
6. Fluoroscopy Guided Thoracic Paravertebral Block in Transapical Transcatheter Aortic Valve Implantation
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Fukuhara, Kumi, Kondo, Takashi, Miyosi, Hirotsugu, Kato, Takahiro, Hamada, Hiroshi, and Kawamoto, Masashi
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胸部傍脊椎ブロック ,thoracic paravertebral block ,術後疼痛管理 ,postoperative pain ,経カテーテル大動脈弁留置術 ,transcatheter aortic valve implantation - Abstract
We report a novel technique of thoracic paravertebral block in transapical transcatheter aortic valve implantation. Radiopaque catheter for continuous paravertebral block was placed by the surgeon via guiding sheath inserted to the paravertebral space from posterior intercostal wound margin. Fluoroscopy was used for guidance of the sheath and the catheter. Postoperative course was uneventful with adequate pain control. We consider this technique can be useful for perioperative pain management in transapical transcatheter aortic valve implantation., 本論文の要旨は日本区域麻酔学会第3回学術集会(2016年,弘前)において発表した。
- Published
- 2017
7. 胸部硬膜外麻酔によりHorner症候群を呈した1例
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Yokota, Mayuko, Miyoshi, Hirotsugu, Nakamura, Ryuji, Kondo, Takashi, Kato, Takahiro, Yasuda, Toshimichi, Saeki, Noboru, Hamada, Hiroshi, and Kawamoto, Masashi
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胸部外科手術 ,Horner syndrome ,胸部硬膜外麻酔 ,thoracic epidural anesthesia ,thoracic surgery ,Horner 症候群 - Abstract
Horner’s syndrome is a syndrome characterized by miosis, eyelid ptosis, narrowing of the eyelids and ocular depression. Diagnosis of the causative disease is important because it may accompany fatal diseases such as brain stem infarction and bleeding, spinal hematoma and neoplastic lesion and internal carotid artery dissection. A woman in her 60s. Left lung lower lobectomy was performed with thoracoscopy assistance for left lung cancer. General anesthesia with epidural anesthesia was performed with propofol and remifentanil. The epidural catheter was punctured from the sixth seventh thoracic vertebrae. Horner’s syndrome occurred on 2 days postoperatively. After reducing epidural anesthesia, symptoms improved. From this, epidural anesthesia proved to be the cause of Horner’s syndrome. Epidural anesthesia can rarely cause Horner’s syndrome.
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- 2019
8. 麻酔科開設以来50年間の麻酔管理と使用麻酔薬の変遷
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Fukuda, Hideki, Saeki, Noboru, Yasuda, Toshimichi, Oshita, Kyoko, Nakamura, Ryuji, Haraki, Toshiaki, Kondo, Takashi, Kato, Takahiro, Miyoshi, Hirotsugu, Taguchi, Shima, Sanuki, Michiyoshi, Niinai, Hiroshi, Hamada, Hiroshi, and Kawamoto, Masashi
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inhalation ,麻酔薬 ,静脈内 ,anesthetics ,intravenous ,変遷 ,transition ,吸入 - Abstract
広島大学麻酔蘇生学教室は1967年1月に盛生倫夫が初代教授に就任し開講した。開講50周年を機に,麻酔科開設以来の麻酔管理に用いた麻酔薬の変遷を辿った。開講当初から1985年までは亜酸化窒素とハロタンを中心とした吸入麻酔薬の時代,1990年から2005年はエンフルラン,イソフルラン,セボフルランなどの吸入麻酔薬とフェンタニルの併用の時で,2010年からはプロポフォールとレミフェンタニルの全静脈麻酔あるいはセボフルランあるいはデスフルランとレミフェンタニル併用の時代であった。開講から1980年頃まではスキサメトニウムを主に使ったが,それ以降は非脱分極性筋弛緩薬であるパンクロニウムへ,そしてベクロニウムへ推移し,現在はロクロニウムが主流となっている。使用麻酔薬の変遷は麻酔薬の科学的な評価とそれらを使用する麻酔科医の考え方を反映していた。, Department of Anesthesiology and Critical Care, Hiroshima University, started in January 1967 when Dr. Michio Morio became the first professor. With the 50th anniversary of the establishment of the department, the transition of the anesthetics used in our long history of anesthesia care was investigated since the beginning of the department. Inhalation anesthetics was mainly used in combination with nitrous oxide and halothane from the beginning to 1985. Inhalation anesthetics such as enflurane, isoflurane, sevoflurane and intravenous fentanyl were used from 1990 to 2005, and the total intravenous anesthesia by using propofol and remifentanil was introduced and used currently. Sevoflurane or desflurane combined with remifentanil was also a mainstream since 2010. From the beginning to 1980, suxamethonium was mainly used for muscle relaxation, followed by pancuronium thereafter and shifted to vecuronium and to rocuronium. The transition of anesthetics applied for clinical anesthesia in our department seemed to be reflecting the selection based on scientific validity.
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- 2019
9. 抗生剤によるビタミンK欠乏性凝固異常のために硬膜外カテーテル抜去に難渋した3症例
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Hirata, Yuri, Miyoshi, Hirotsugu, Nakamura, Ryuji, Masuda, Yoko, Kondo, Takashi, Kato, Takahiro, Yasuda, Toshimichi, Hamada, Hiroshi, and Kawamoto, Masashi
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vitamin K deficiency ,ビタミンK欠乏症 ,NMTT 基 ,antibiotic ,PIVKA-II ,硬膜外麻酔 ,抗生剤 ,N-methyltetrazolethiol ,epidural anesthesia - Abstract
Perioperative vitamin K deficiency can cause severe coagulopathy rapidly. Vitamin K deficiency tends to be overlooked despite the elucidation of pathophysiology and countermeasures. The main causes of vitamin K deficiency are insufficient intake, low supply from intestinal bacteria, and synthesis inhibition of vitamin K by N-methyltetrazolethiol (N - MTT) contained antibiotics. We experienced three cases in which it was difficult to remove epidural catheter because of coagulation abnormality due to vitamin K deficiency after surgery. Vitamin K deficiency should be wary of when epidural catheter is indwelled or withdrawn from a patient who is administered with antibiotic containing N-MTT in the fasted state.
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- 2019
10. 体位変換に伴う循環動態の腹臥位と膝胸位間での比較
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Miyoshi, Hirotsugu, Nakamura, Ryuji, Kondo, Takashi, Kato, Takahiro, Yasuda, Toshimichi, Tanaka, Hiroyuki, Hamada, Hiroshi, and Kawamoto, Masashi
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腹臥位 ,膝胸位 ,prone position ,sense organs ,循環動態 ,全身麻酔 ,knee-chest position ,skin and connective tissue diseases ,hemodynamics ,general anesthesia - Abstract
全静脈麻酔下で腹臥位または膝胸位へ体位変換した際の循環動態を両体位で比較するため,腰部脊椎手術を受けた患者を後方視的に調査した。体位変換の直前,体位変換直後, 3分後, 5分後の心拍数(HR)および収縮期血圧(SBP),拡張期血圧(DBP),平均血圧(MBP)を測定した。各パラメーターを体位変換前の値を基準とし体位変換後の変化率を算出し膝胸位(Knee-chest群)と腹臥位(Prone群)で比較した。統計はt検定を用いた。対象患者はKnee-chest群30名,Prone群30名であった。SBPは体位変換直後から5分後までKnee-chest群で有意に低く,MBPは5分後でKnee-chest群で有意に低く,HRは体位変換直後から5分後までKnee-chest群で有意に高かった。このため,全静脈麻酔管理下で膝胸位への体位変換は,腹臥位への体位変換よりも血圧の低下に注意する必要があると結論した。, We compared the hemodynamics of posture change under general anesthesia between prone position and knee chest position. Patients who underwent lumbar spinal surgery were retrospectively investigated. Heart rate (HR) and systolic blood pressure (SBP), diastolic blood pressure (DBP), mean blood pressure (MBP) were measured before and after postural change, 3 minutes and 5 minutes after postural change. The rate of change of each parameter was calculated and compared in both groups of knee-chest and prone position. Student’s t-test was used as statistical methods. We analyzed 60 patients (30 Knee-chest, 30 Prone). SBP was significantly lower in the Knee-chest group from immediately after postural change to 5 minutes after postural change. MBP was significantly lower in the Knee-chest group 5 minutes after postural change. HR was significantly higher in the Knee-chest group from immediately after body change to 5 minutes after postural change. In conclusion, SBP and MBP were significantly lower in the knee-chest position than in the prone position during postural change. Postural change to the kneechest position requires attention to lowering of blood pressure than postural change to the prone position.
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- 2019
11. 無線LANにより医療機器からの自動記録が可能になったオープンMRI手術室での25症例の麻酔経験
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Ishii, Tomomi, Sanuki, Michiyoshi, Kato, Takahiro, Yasuda, Toshimichi, Haraki, Toshiaki, and Kawamoto, Masashi
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無線LAN ,Open MRI ,オープンMRI ,医療機器連携 ,anesthesia information management system ,麻酔 ,anesthesia ,wireless LAN ,自動麻酔記録 ,medical network system - Abstract
オープンMRI設置手術室で25例の麻酔を経験した。MRI設置手術室では術中にMRI画像を判断材料として手術をすすめるため,MRI画像へのノイズ混入対策が必要である。また,MRI磁場の影響で術中にモニター機器や麻酔器が誤動作を起こす可能性があるため,MRI非対応機器からの画像ノイズの遮断対策として,電子機器から発生するノイズの軽減には特殊シールドボックスやイキソルメッシュを使用し,手術室外からのノイズには手術室全体にシールド工事を行った。MRIが発生させる磁場による電子機器の誤動作・故障対策は,オープンMRIの磁場が5ガウス以下となる範囲に電子機器や手術器具を置くことで対応した。問題の克服に加えて,医療機器からのデータの無線通信により,ケーブル類をなくすことでMRI撮影時の患者移動の簡素化をはかり,安全性を高めることができた。, We provided anesthesia care for 25 patients in an open MRI operating room and summarized here our experience. When surgeons use MRI during surgery, the presence of noise in the images caused by other electronic equipment in the area often hinders accurate diagnosis. In addition, malfunction of monitoring and anesthesia equipment during surgery due to the MRI magnetic field created during an MR examination can occur. In order to prevent imaging interference affecting equipment not compatible with MRI, we utilized 2 specially prepared shield boxes and wrapped the personal computer used for coordinating the data with a mesh-like cloth made by Ixol-mesh. In addition, we prepared a shielded operating room in order to block noise from the outside. To prevent malfunction of the surgical and electronic instruments, we kept them outside the magnetic field of 5 Gauss or lower to minimize the magnetic effect generated with MRI. Furthermore, patient safety during MRI imaging was improved by establishing a wireless communication system to feed data from medical devices, which allowed elimination of cabling.
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- 2019
12. Stanford A型急性大動脈解離術後の高流量鼻カニュラ酸素療法の有用性の検討
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Sato, Hiroki, Kondo, Takashi, Haraki, Toshiaki, Kato, Takahiro, Sanuki, Michiyoshi, Hamada, Hiroshi, and Kawamoto, Masashi
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High flow nasal cannula ,acute aortic dissection ,高流量鼻カニュラ酸素療法 ,postoperative respiratory management ,急性大動脈解離 ,術後呼吸管理 - Abstract
Stanford A型急性大動脈解離(AAD)の術後管理において,呼吸管理は重要な問題の一つである。この研究ではAAD術後患者に関する高流量鼻カニュラ(HFNC)の有用性を検討した。当院の外科手術後集中治療室においてHFNCを導入する前に呼吸管理をした患者群(導入前群:9例)とHFNC導入後にこれを用いて呼吸管理をした患者群(導入後群:7例)を対象に,後方視的に比較検討を行った。患者背景因子および術中経過に有意な群間差は認めなかったが,人工呼吸器離脱直前のPaO2/FiO2比(P/F)は導入後群で有意に低かった(導入前群:284±28,導入後群:205±6)。人工呼吸器離脱後の経過や有害事象の発生数に有意な群間差は認めなかった。本研究では,HFNC導入によりP/Fが200程度の患者であっても人工呼吸器からの離脱が可能であった。有害事象の発生数に両群間に差を認めなかったことから,HFNCはAADの術後に用いることができる呼吸管理法になると結論した。, In this study, we retrospectively reviewed the records of patients who underwent open operation for acute aortic dissection (AAD), and assessed the clinical superiority of postoperative respiratory management with high flow nasal cannula (HFNC) in comparison with conventional management with the face mask. PaO2/FiO2 before tracheal extubation in the HFNC group (n = 7) was 205, and which was lower than that in the conventional management group (n = 9). The HFNC was not inferior to the conventional face mask for improvements in oxygenation, stay lengths in the surgical intensive care unit, and frequencies of adverse events. In conclusion, we suggested that the HFNC could be an option for postoperative respiratory management of AAD., 本論文の要旨は,第44回日本集中治療医学会学術集会(2017年,札幌)で発表した。
- Published
- 2017
13. Bone metabolism and phosphorus metabolism in patients with prostate cancer: paracrine and endocrine effects produced by prostate neoplasm
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SATANI, Hiroyuki, YAMAKAWA, Kensuke, KAWAMURA, Juichi, MORI, Osamu, SAITO, Kaoru, KATO, Hiromi, TOCHIGI, Hiromi, SAKURAI, Masaki, and KATO, Takahiro
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Prostate cancer ,Bone metabolism ,Phosphorus metabolism ,494.9 - Abstract
We examined whether paracrine factors produced by prostate cancer cells can modulate bone metabolism in proportion to the volume of cancer cells in bone metastasis. Endocrine factors produced by prostate cancer cells affect both phosphate and 1, 25-dihydroxyvitamin D metabolisms. Levels of urine pyridinoline (U-Pyr) excretion and serum carboxy-terminal propeptide of type 1 procollagen (P1CP) in patients with bone metastasis were significantly higher than those in patients without bone metastasis (P< 0.05). In patients with bone metastasis (n= 1 7), serum prostate-specific antigen (PSA) levels were significantly correlated with the levels of U-Pyr and urine deoxypyridinoline (U-dPyr) excretion, serum cross-linked carboxyterminal telopeptide of type 1 collagen (1CTP), and P1CP levels (p < 0.05). However, serum PSA levels were not correlated with U-Pyr, U-dPyr excretions, serum ICTP and P1CP levels in patients without bone metastasis. Therefore, prostate cancer cells appear to have some paracrine effects on bone cells. In controls (n=15), serum 1, 25dihydroxyvitamin D levels (1, 25-(OH)2D) were inversely correlated with serum phosphorus levels (P
- Published
- 1997
14. Dietary control for out-patients in urinary stone clinic
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Kato, Takahiro, Yanagawa, Makoto, Hioki, Takuichi, Sakurai, Masaki, Yamakawa, Kensuke, Araki, Tomio, Yamamoto, Itsuo, Arima, Kiminobu, Tochigi, Hiromi, Kawamura, Juichi, and Mine, Toshiko
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Stone clinic ,Urinary stone ,Dietary cure ,494.9 - Abstract
尿路結石患者113名を対象とした。1)栄養指導前後におけるおもな食事内容の変化では, 男性の蛋白摂取量に有意の低下を認めたが, 他のものは特に有意の差はなかった。2)栄養指導前後におけるおもな尿中物質には, 特に有意の変化をみたものはなかった。3)栄養指導前の尿酸排泄量650mg/day以上, カルシウム排泄量250mg/day以上, 一日蓚酸排泄量が45mg/day以上のそれぞれの症例を検討した結果, 栄養指導によりそれぞれが有意に減少した。4)食事内容と尿中排泄物との相関を見ると, 蛋白摂取量と尿中尿酸, カルシウム, 燐排泄量およびVit. C摂取量と尿中クエン酸排泄量との間に正の相関を認め, カルシウム摂取量と尿中蓚酸排泄量との間に負の相関を認めた。5)栄養指導前後を比較すると, 結石再発率は有意に減少した, We studied the dietary habits of 113 upper urinary tract stone formers and 24-h urine specimens before and after dietary control. Protein intake was decreased in male patients after dietary control but urinary risk factors were not changed significantly. The excretion of urinary risk factors (calcium, uric acid and oxalate) was decreased in the patients who had calcium excretion of more than 250 mg per day or uric acid excretion more than 650 mg per day or oxalate excretion more than 45 mg per day before the control. The daily protein intake was significantly correlated to urinary uric acid, calcium, and phosphate excretion and the daily vitamin C intake to urinary citrate excretion. There was a negative correlation between the daily calcium intake and urinary oxalate. The mean stone episode rate of these patients was significantly decreased from 0.174 to 0.059 stones per year by dietary control (p < 0.005).
- Published
- 1993
15. Repair of skin defect after extensive resection for penile cancer: report of two cases, and clinical observation of patients with penile cancer at Mie University hospital
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Araki, Tomio, Tochigi, Hiromi, Kameda, Kouji, Satani, Hiroyuki, Yamashita, Atsushi, Kato, Takahiro, Hioki, Takuichi, Sakurai, Masaki, Yamakawa, Kensuke, Arima, Kiminobu, Yanagawa, Makoto, Sugimura, Yoshiki, and Kawamura, Juichi
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Skin reconstruction ,494.9 ,Penile cancer - Abstract
Case 1: A 48-year-old male with stage 4 penile cancer is reported. We used peplomycin (PEP) and cisplatinum (CDDP) for preoperative chemotherapy. Chemotherapy was effective. Radical surgery with bilateral inguinal lymphadenectomy was done and skin defect was covered with a skin flap. Case 2: A 61-year-old male with stage 4 penile cancer underwent radical surgery after modified MBD therapy with methotrexate (MTX), PEP and CDDP. Emasculation with skin resection and inguinal and pelvic lymphadenectomy were performed. The skin defect was deep and wide. It was covered with a glacilis myocutaneous skin flap. Distal end of the flap became necrotic. It was covered with tensor fascia lata myocutaneous flap. Seventeen patients with penile cancer were treated between 1972 and 1990 at Mie University Hospital. Nine patients were in stage 1, 4 stage 2, 1 stage 3, 3 stage 4. Treatment consisted of surgery (3), surgery+chemotherapy (10), surgery+chemotherapy+irradiation (2), chemotherapy+irradiation (1), and surgery+irradiation(1). Cancer death was observed in 2 cases (stage 2), 2 patients died of other diseases, 10 are alive, and 3 patients were lost to follow up.
- Published
- 1992
16. Oxalate influx rate in red blood cells in calcium oxalate nephrolithiasis
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Kato, Takahiro, Yamakawa, Kensuke, and Kawamura, Juichi
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Oxalate transport ,Red blood cell oxalate influx rate ,Calcium oxalate nephrolithiasis ,494.9 ,Band 3 protein - Abstract
対象は再発性蓚酸カルシウム結石患者群10名, 健康対照群18名である.1)陰イオン交換系阻害剤であるDIDSの存在下では赤血球内への蓚酸輸送は大きく阻害され, RBC oxalate influxはband 3 proteinを介した現象であると考えられた.2) RBC oxalate influx rateに影響を与える因子は反応系の温度, 反応系のpHであり, 反応温度を0°C, その時のpHを7.4とした条件下でRBC oxalate influx rateの測定が可能であった.3)健常対照群および蓚酸カルシウム結石患者でRBC oxalate influx rateを測定した結果, 有意差を認め, 尿路結石患者の一部には体細胞膜での蓚酸輸送異常の存在する可能性も考えられた, We established a method of human red blood cell oxalate influx rate under the condition of steady state exchange. Using this method we measured the influx rate in 10 patients with recurrent calcium oxalate nephrolithiasis and in 18 controls. DIDS inhibited oxalate flux across the human red blood cell membrane. This result suggested that band 3 protein mediates oxalate transport. Oxalate influx rate depended on reaction temperature and pH of reaction buffer. Although the oxalate influx rate in 4 degrees C could not be determined under an initial condition rate, the measurable condition was in 0 degrees C of reaction temperature. Consequently we measured the oxalate influx rate under the condition of 0 degrees C reaction temperature and 20 ml volume of washing buffer. The mean oxalate influx rate was significantly higher in patients with nephrolithiasis than in controls (-1.00 +/- 0.19 vs. -0.78 +/- 0.14).
- Published
- 1991
17. Epidemiologic study on urolithiasis in Mie prefecture. 2. Present status in 1988
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Kawamura, Juichi, Yanagawa, Makoto, Tochigi, Hiromi, Kinoshita, Nobutaka, Kato, Hiromi, Nishii, Masaharu, Yamasaki, Yoshihisa, Yamamoto, Itsuo, Komeda, Yoshinori, Okabe, Syoji, Kakehi, Hideo, Yamada, Yukitaka, Naruke, Yoshiji, Mori, Yukio, Morishita, Fumio, Saito, Kaoru, Chigusa, Ichiro, Kato, Takahiro, Kawai, Tadashi, Komada, Satao, Kato, Masafumi, Honoki, Shigehiro, Arima, Kiminobu, Mori, Osamu, Suzuki, Norimoto, Maruyama, Yoshio, Arai, Kunihiko, Ogushi, Norimasa, Horiuchi, Eiho, Nagano, Michio, Hoshina, Akira, Matsumoto, Tunichi, Araki, Tomio, Hioki, Takuichi, Hamano, Koichiro, and Nakamura, Jun
- Subjects
Mie Prefecture ,Urolithiasis ,Epidemiologic study ,494.9 - Abstract
To determine the current status of urolithiasis in 1988, in comparison with that in 1985, we analyzed the 1937 patients of urolithiasis at 17 departments of urology in Mie Prefecture and 2 departments of urology in Wakayama Prefecture. The ratio of male to female patients was 2.6 to 1.0. Geographically, the number of urolithiasis patients was most frequently distributed in Matsusaka City. The frequency of urolithiasis in the urban area was almost the same as that in the rural area. Most of the stones (96.3%) were in the upper urinary tract. The frequency of lower urinary tract calculi tended to be high in southern Mie Prefecture. The ratio of the upper urinary tract calculi to the lower urinary tract calculi in the urban area was higher than in the rural area. The age distribution in males was in the forties, while that in females was in the fifties. The average age was 46.4 years old. The surgical treatment was performed in 671 patients (34.6%) and the extracorporeal shock wave lithotripsy (ESWL) was the most frequent mode of treatment (85.0%), followed by cysto-lithotripsy (4.2%) and percutaneous nephro-uretero-lithotripsy (2.4%). The most frequent component of the urinary tract calculi was calcium oxalate and/or calcium phosphate (81.7%). The stone patient increased in the number during the summer season (July, August and September). In conclusion, in 1988 when the ESWL treatment started in Mie Prefecture, the epidemiologic features of urolithiasis was characterized as follows: the number of patients increased and the broad application of the ESWL treatment resulted in the decreased number of patients with spontaneous discharge and the increased number of patients with recurrent stones and with bilateral or multiple complex stones.
- Published
- 1991
18. Efficacy of combination of Ea-0643 (bunazosin hydrochloride) and bethanechol chloride in patients with neurogenic bladder
- Author
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Araki, Tomio, Nakano, Seiich, Sugimura, Yosiki, Tochigi, Hiromi, Kawamura, Juichi, Kato, Takahiro, Tajima, Kazuhiro, Chigusa, Ichiro, Saito, Kaoru, Morisita, Humio, Mori, Yukio, and Komeda, Katsuki
- Subjects
Bunazosin hydrochloride ,494.9 ,Bethanechol chloride - Abstract
Bethanechol chloride, a cholinergic agent and bunazosin hydrochloride, an alpha adrenergic blocking agent were administered orally to 28 patients with neurogenic bladder due to peripheral nerve disorders. To compare the effect of the two drugs, one of the drugs was initially administered orally for 2 weeks, and then both of them were administered for the next 2 weeks. Since there were some significant differences in the patient background between the two groups, it was difficult to compare the two drugs. However combined use of these drugs resulted in both objective and subjective good responses in those patients.
- Published
- 1990
19. A case report of extragonadal germ cell tumor with retroperitoneal origin
- Author
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Kato, Takahiro, Hori, Natuki, Sugimura, Yoshiki, Tajima, Kazuhiro, Tochigi, Hiromi, and Kawamura, Juichi
- Subjects
Extragonadal germ cell tumor ,Choriocarcinoma ,494.9 ,Retroperitoneal tumor - Abstract
A case of extragonadal germ cell tumor is reported. A 41-year-old man, an elementary school teacher, was referred to our department with left abdominal pain and gynecomastia on September, 1985. Laboratory examinations revealed markedly high levels of LDH, AFP and HCG-beta. IVP and abdominal CT disclosed dislocation of the left kidney and the large left retroperitoneal mass. The mass was supplied by the left lumbal arteries on the aortogram. Chest X-ray film showed multiple coin lesions in the bilateral lung fields. By percutaneous needle biopsy, the histological finding of the tumor showed choriocarcinoma. No abnormal findings were found in either testicle by the physical and ultrasonic examinations. This case was diagnosed as extragonadal choriocarcinoma with lung metastasis. After 3 courses of chemotherapy (PVB regimen), resection of the retroperitoneal residual mass and lymphadenectomy were performed. Postoperatively, the chemotherapy, CISCA II - VB IV regimen, was repeated. The patient was discharged after 7 months hospitalization. Now, 35 months after operation, tumor markers, chest X-ray and abdominal CT showed no evidence of recurrence of the tumor.
- Published
- 1990
20. Highly Esthetic and Toughened Dental Composite Resins.
- Author
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Kato, Takahiro, Saigo, Kazuhiko, Tsuneishi, Mari, Yamada, Bunichiro, and Yamamoto, Shigenari
- Subjects
DENTAL resins ,SILICA gel ,FILLER materials ,REFRACTIVE index ,FLEXURAL strength - Abstract
A newly developed inorganic coagulated filler consisting of SiO
2 , ZrO2 , and Al2 O3 was mixed composite containing 1,6-bis-(methacryloyloxy-2-ethoxycarbonylamino)-2,4,4-trimethylhexane (UDMA) and colloidal silica as main ingredients in order to attain the highly esthetic and tough dental resin. Differences in the refractive index between the filler and the matrix before and after curing by a camphorquinone/amine/visible light initiation system were minimized to achieve the high translucency required for the esthetic resin. The refractive index of the filler was adjusted by coagulation of the primary particle at an optimum temperature (1100°C). Flexural strength of the resin was increased by the anchor effect, depending on the surface conditions of the filler. Furthermore, the flexural strength of the resin was found to increase to 250 MPa by post-curing upon heating at 110°C. As a result, the sufficiently translucent and resin in comparison to commercial products (flexural strength ≤220 MPa) was successfully obtained. [ABSTRACT FROM AUTHOR]- Published
- 2012
- Full Text
- View/download PDF
21. ペルー ニ オケル ボウレイ セツワ
- Author
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Kato, Takahiro
- Published
- 1981
22. ショヒョウ
- Author
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Kato, Takahiro
- Published
- 1985
23. シャカイ ゲンショウ トシテノ インカリ アンデス コウチ ニオケル シンワ ノ チ オ メグッテ
- Author
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Kato, Takahiro
- Published
- 1989
24. ケンキュウ ノート メキシコ ニオケル ウワサ シンドローム ト ダイトウリョウ キョウショ キンユウ キキカ ノ メキシコ シャカイ
- Author
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Kato, Takahiro
- Published
- 1983
25. ショヒョウ
- Author
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Kato, Takahiro
- Published
- 1980
26. [Stress Mediated Microglial Hyper-Activation and Psychiatric Diseases].
- Author
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Enomoto S and Kato TA
- Subjects
- Animals, Disease Models, Animal, Extinction, Psychological, Humans, Memory, Microglia, Receptors, GABA, Fear, Stress Disorders, Post-Traumatic
- Abstract
Stress is a trigger for depression and PTSD, with current studies suggesting the involvement of microglial hyperactivation and dysfunction in the pathophysiology of these diseases. In this review, we introduced microglial functional changes in animal models, which exhibit fear memory dysregulation that is characteristic of PTSD, and human microglia-focused clinical studies on depression and PTSD. Stress has been found to affect cytokine and neurotrophic factor releases from the microglia, promoting microglia-mediated synaptic phagocytosis. In particular, animal models of PTSD have indicated that abnormal microglial cytokine production engage in decontextualized fear memory, fear extinction deficit, and fear generalization, and impaired microglial phagocytosis may also participate in fear generalization and fear forgetting. It is not possible to evaluate higher mental dysfunction in stress-related psychiatric disorders using model animals alone. PET studies with TSPO ligands, for one, suggest that inflammatory microglial changes are enhanced in depressed patients, whereas these changes are suppressed in PTSD patients. Thus, we conducted a reverse-translational research to explore the involvement of microglia in depression using human peripheral blood. We believe that interactive research in humans and animals is needed to elucidate the pathophysiology of stress-related psychiatric disorders for the development of treatment options for such patients.
- Published
- 2021
- Full Text
- View/download PDF
27. [Acute Drug Poisoning among Adolescents Using Over-the-counter Drugs: Current Status].
- Author
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Hirose M, Hirakawa A, Niwa W, Higashiguchi T, Tajima K, Kato T, and Yamada S
- Subjects
- Acute Disease, Adolescent, Age Factors, Caffeine poisoning, Commerce, Female, Humans, Incidence, Male, Multi-Ingredient Cold, Flu, and Allergy Medications adverse effects, Nonprescription Drugs adverse effects, Pharmacies, Time Factors, Adolescent Behavior, Consumer Behavior, Drug Misuse prevention & control, Drug Misuse statistics & numerical data, Multi-Ingredient Cold, Flu, and Allergy Medications poisoning, Nonprescription Drugs poisoning
- Abstract
We discuss the current status of, and possible countermeasures for, acute drug poisoning among adolescents using OTC drugs. In the last 10 years, 36 patients aged <20 years who overdosed on OTC drugs were examined for the type of drug ingested, its active ingredients in cases of lethal dose intake, and the relevant place of purchase. Patients aged <20 years accounted for 30% of all the cases. The ingestion of multi-ingredient common-cold medication was the highest at 23%, and no ingestion of any first-class OTC drugs was observed. Caffeine accounted for 54% of the cases of lethal dose intake. At 80%, the most common method of drug purchase was from drugstores and other OTC vendors. In recent years, the number of adolescents patients who take lethal doses of OTC drugs has been increasing, and new measures are needed to avoid such cases. School pharmacists and vendors play a major role in reducing the incidences of drug poisoning. As drugs can be easily purchased over the counter, increasing the vendors' awareness of the problem throughout society may be the quickest way to reduce the incidences of acute drug poisoning among adolescents.
- Published
- 2021
- Full Text
- View/download PDF
28. [The impact of 4DCT-ventilation imaging-guided proton therapy on stereotactic body radiotherapy for lung cancer].
- Author
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Ieko Y, Kadoya N, Kanai T, Nakajima Y, Arai K, Kato T, Ito K, Miyasaka Y, Takeda K, Iwai T, Nemoto K, and Jingu K
- Subjects
- Humans, Lung, Radiotherapy Planning, Computer-Assisted, Respiration, Lung Neoplasms diagnostic imaging, Lung Neoplasms radiotherapy, Proton Therapy, Radiosurgery
- Published
- 2021
- Full Text
- View/download PDF
29. [Influence and Countermeasure of Respiratory Motion on Matchline Profile of Field Matching Technique in Passive Scattering Proton Therapy for Esophageal Cancer].
- Author
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Kato M, Dobashi S, Kato T, Kato R, Masaki K, Arai K, Komori S, Oyama S, Endo H, Wada H, Murakami M, and Takeda K
- Subjects
- Humans, Radiotherapy Dosage, Radiotherapy Planning, Computer-Assisted, Esophageal Neoplasms radiotherapy, Motion, Proton Therapy
- Abstract
This study aimed to evaluate the influence of change in respiratory motion on matchline (ML) and reduction of the effect by increasing ML levels of field matching technique in passive scattering proton therapy for esophageal cancer. To evaluate the influence of respiratory motion in terms of stability, we measured relative dose around ML using a respiratory motion phantom. The relative error was -0.5% when the respiratory motion phantom worked stable, whereas there was obvious change that the relative error was -25.5% when the difference of amplitude between upper field and lower field was one side 3 mm on each cranially and caudally direction. In clinical case of the seven esophageal cancer patients simulated by the treatment planning system, assuming the difference of amplitude was 3 mm, the relative error of maximum (minimum) dose in clinical target volume around ML against the original treatment plan were 5.8±1.2% (-6.0±2.7%), 3.3±0.9% (-3.8±1.0%), and 2.4±0.5% (2.6±0.8%) on average (±SD) when ML levels were 2, 4, and 6, respectively. Increasing ML levels can reduce the influence of respiratory motion.
- Published
- 2019
- Full Text
- View/download PDF
30. [Translational Research on Neuropsychiatric Disorders: Focusing on Microglia Hypothesis].
- Author
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Kato TA, Ohgidani M, and Kanba S
- Subjects
- Animals, Humans, Metabolome, Translational Research, Biomedical, Central Nervous System Diseases, Mental Disorders, Microglia chemistry
- Abstract
Microglia-immune cells in the brain-have recently been highlighted to understand the pathophysiology of psychiatric disorders such as schizophrenia, depression, and autism. In this review paper, we introduce the microglia hypothesis for psychiatric disorders. In addition, we introduce our novel translational research approach to psychiatric disorders using microglia-like (iMG) cells directly induced from human blood, these iMG cells can be produced from peripheral monocytes within two weeks using two cytokines: granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-34 (IL-34).
- Published
- 2017
- Full Text
- View/download PDF
31. [Participation/Dispatch Reports on International Conferences in 2017].
- Author
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Kato T and Sasaki M
- Published
- 2017
- Full Text
- View/download PDF
32. [The International Study of Burnout Syndrome among Psychiatric Trainees (BoSS International) : Findings from Statistical Analysis of the Japanese Data (BoSS Japan)].
- Author
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Tateno M, Kato TA, Uehara-Aoyama K, Umene-Nakano W, Nakamae T, Uchida N, Naoki Hashimo, Kikuchi S, Yosuke Wake, Fujisawa D, Ikari K, Otsuka K, Takahashi K, Okugawa G, Watanabe N, Shirasaka T, Jovanovic N, and Beezhold J
- Subjects
- Adult, Female, Humans, Japan epidemiology, Male, Workload, Burnout, Professional epidemiology, Burnout, Psychological epidemiology, Occupational Diseases epidemiology
- Abstract
Background: Burnout is a psychological condition that may occur after being exposed to excessive and prolonged work-related stresses. Previous studies have demonstrated that the rate of burnout among physicians may be higher compared to other occupations ; and espe- cially psychiatric trainees would have a higher risk of burnout because of limited clinical expe- rience, the burden of heavy duties and longer work-hours etc. In this study, we report the findings from Japanese data obtained as part of the international study of burnout syndrome among psychiatric trainees (BoSS International)., Methods: This study was initiated by members of the European Federation of Psychiatric Trainees (EFPT) and the European Psychiatric Association-European Early Career Psychia- trists (EPA-EECP). The total number of participating nations was 22 countries. A national coordinator recruited study collaborators all over Japan and psychiatric trainees working at their medical institutes were invited to participate in BoSS International by e-mail. The sub- jects were requested to answer the on-line questionnaire anonymously. Consent was obtained when making a list of potential participants at each institute and reconfirmed on the first page of the on-line questionnaire. Answering the questionnaire was deemed to constitute consent., Results: Total number of participants to BoSS International was 7,525 from 22 countries and regions. Of them, 1,980 psychiatric trainees fully completed answering the questionnaire (response rate (RR) 26.0%) including 95 Japanese trainees (RR 41.5%). The mean age of 95 Japanese psychiatric trainees (male rate 67.4%) enrolled in BoSS International was 31.8?4.8 year-old. Their mean clinical experience was 2.9 ?4.4 years. The mean weekly working hours were 72.3?27.1, which was the longest of the 22 participating countries/regions ; while weekly clinical supervision by a mentor was only 3.8?9.0 hours. Regarding the severity of burnout, assessed by using the Maslach Burnout Inventory-General Survey (MBI-GS) consisting of three factors (emotional exhaustion, cynicism, and low sense of professional efficacy): 41 Japanese psychiatric trainees (42.0%) meet the criteria of severe burnout syndrome in this study ; with emotional exhaustion scores of 2.20 and higher, and cynicism of 2.00 and higher. Signifi- cant differences were found on the PHQ-9 score and mean length of supervision between those participants with presence and absence of severe burnout syndrome by using Student's t-test., Conclusion: Statistical analyses of the whole data (n=1,980) revealed that the risk of burnout was higher for trainees who were younger, without children, and had not opted for psychiatry as a first career choice. Further analyses after adjustment for socio-demographic characteristics and country difference still demonstrated severe burnout was associated with long working hours, less supervision, and not having regular rest. The analyses of Japanese data showed similar tendencies, although statistical significance was not observed. Burnout among psychiatry trainees may be linked to drop-out from the training program and malprac- tice in clinical settings. We should be aware of the higher risk of burnout in residents and the importance of regular and sufficient supervision to prevent burnout.
- Published
- 2017
33. [Comparison of Postoperative Analgesic Effects between 0.25% Levobupivacaine and 0.5% Levobupivacaine Local Instillation in Inguinal Hernia Repair].
- Author
-
Kato T and Sasaki H
- Subjects
- Bupivacaine administration & dosage, Female, Humans, Levobupivacaine, Male, Middle Aged, Postoperative Period, Retrospective Studies, Anesthetics, Local administration & dosage, Bupivacaine analogs & derivatives, Hernia, Inguinal surgery, Pain, Postoperative drug therapy
- Abstract
Background: We compared retrospectively postoperative analgesia of two concentrations of levobupivacaine by local spraying in radical repair of inguinal hernia., Methods: Subjects were patients undergoing unilateral inguinal hernia repair under general anesthesia in five months. The group receiving 0.25% levobupivacaine was Group 0.25%LEV, while the group receiving 0.5% levobupivacaine was Group 0.5%LEV. Levobupivacaine was sprayed over the wound before the external oblique muscle aponeurosis suture and the skin suture. The analgesic effect was evaluated for pain at rest (the time of departure operation room, 1, 2, 3, 4 hours later and the next day) and when walking (4 hours later and the next day) by using the Numerical Rating Scale. We also assessed the use of rescue dose., Results: Group 0.25% LEV included 29 cases and Group 0.5% LEV included 34 cases, and there were no significant differences in demographic data. There were no significant differences between the two groups with the pain at rest and walking. Rescue dose was used in 3 cases of the both groups., Conclusions: In inguinal hernia repair, it is possible that local spraying of 0.25% levobupivacaine exerts the same effect as 0.5% levobupivacaine.
- Published
- 2015
34. [Redox and microglia in the pathophysiology of schizophrenia].
- Author
-
Kato TA, Hyodo F, Yamato M, Utsumi H, and Kanba S
- Subjects
- Animals, Antipsychotic Agents pharmacology, Antipsychotic Agents therapeutic use, Brain metabolism, Disease Models, Animal, Humans, Minocycline pharmacology, Minocycline therapeutic use, Molecular Targeted Therapy, Oxidative Stress drug effects, Schizophrenia drug therapy, Free Radicals metabolism, Microglia metabolism, Microglia pathology, Oxidation-Reduction, Schizophrenia etiology, Superoxides metabolism
- Abstract
Altered antioxidant status has been implicated in schizophrenia. Microglia are major sources of free radicals such as superoxide in the brain, and play crucial roles in various brain diseases. Recent postmortem and imaging studies have indicated microglial activation in the brain of schizophrenia patients. Animal models that express some phenotypes of schizophrenia have revealed the underlying microglial pathology. In addition, minocycline, an antibiotic and the best known inhibitor of microglial activation, has therapeutic efficacy in schizophrenia. We have recently revealed that various antipsychotics directly affect microglia via proinflammatory reactions such as oxidative stress, by in vitro studies using rodent microglial cells. Based on these findings, we have suggested that microglia are crucial players in the brain in schizophrenia, and modulating microglia may be a novel therapeutic target. In this review paper, we introduce our hypothesis based on the above evidence. The technique of in vivo molecular redox imaging is expected to be a powerful tool to clarify this hypothesis.
- Published
- 2015
- Full Text
- View/download PDF
35. [Successful airway management using i-gel in 7 patients undergoing awake craniotomy].
- Author
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Matsunami K, Sanuki M, Yasuuji M, Nakanuno R, Kato T, and Kawamoto M
- Subjects
- Female, Gels, Humans, Male, Middle Aged, Positive-Pressure Respiration methods, Consciousness, Craniotomy methods, Positive-Pressure Respiration instrumentation
- Abstract
In order to secure airway during awake craniotomy, we used i-gel to perform positive-pressure ventilation in 7 patients for their anesthetic management. During removal of a tumor around the motor speech center, anesthetic management including asleep-awake-asleep technique was applied for speech testing. The technique, insertion and re-insertion of i-gel, was needed and it was easy in all the patients. During positive-pressure ventilation, peak pressure, tidal volume both for inspiration and expiration, and endtidal-CO2 were not markedly altered. Leakage around i-gel, and its differences between inspiration and expiration were negligible, while the tidal volume was adequate. We conclude that i-gel is useful for anesthetic management for awake craniotomy procedure for both securing airway and ventilation.
- Published
- 2014
36. [Evaluation of postoperative pain intensity related to post-thoracotomy pain syndrome occurring after video-assisted thoracic surgery lobectomy for lung cancer].
- Author
-
Kajiyama S, Miyoshi H, Kato T, and Kawamoto M
- Subjects
- Aged, Amides administration & dosage, Anti-Inflammatory Agents, Non-Steroidal administration & dosage, Drug Therapy, Combination, Female, Fentanyl administration & dosage, Humans, Male, Middle Aged, Pain, Postoperative physiopathology, Retrospective Studies, Ropivacaine, Severity of Illness Index, Syndrome, Analgesia, Epidural methods, Analgesia, Patient-Controlled methods, Analgesics administration & dosage, Lung Neoplasms surgery, Pain Measurement, Pain, Postoperative diagnosis, Pain, Postoperative drug therapy, Pneumonectomy, Postoperative Care, Thoracic Surgery, Video-Assisted
- Abstract
Background: We conducted a retrospective study to evaluate the relationship between post-thoracotomy pain syndrome (PTPS) and early postoperative analgesia with multimodal analgesia administered via a combination of patient-controlled epidural analgesia (PCEA) and nonsteroidal anti-inflammatory drugs (NSAIDs) in patients who had undergone video-assisted lobectomy for lung cancer., Methods: A total of 73 adult patients were divided into 2 groups: group A included 12 patients (16.4%) with PTPS, and group B included 61 patients without PTPS. All patients received postoperative multimodal analgesia via a combination of NSAIDs and PCEA with a mixture of 2 microg x ml(-1) fentanyl and 1.5 mg x ml(-1) ropivacaine. For statistical analyses, unpaired t-test, Mann-Whitney test and chi square test were used and considered P significant if lower than 0.05., Results: Pain intensity was measured on a 100-mm non-graduated visual analogue scale (VAS), and it was significantly greater in group A (8 mm) than that in group B (2 mm). There was no significant difference between groups in pain intensity during movement, with a VAS score of 33 mm in group A and 35 mm in group B. The number of PCEA bolus injections given to patients was significantly higher in group A (3 times) than in group B (2 times). The duration of PCEA was also significantly longer in group A (4 days) than in group B (3 days). There was no significant difference in the rate of NSAIDs usage between the 2 groups, Conclusions: This study demonstrated a significant difference in early postoperative pain intensity between patients with PTPS and those without. We conclude that there is a possibility of intervention in the early postoperative period in patients who underwent thoracic surgery.
- Published
- 2014
37. [Microglial hypothesis of schizophrenia].
- Author
-
Kanba S and Kato T
- Subjects
- Animals, Brain metabolism, Brain pathology, Gene-Environment Interaction, Humans, Inflammation etiology, Inflammation metabolism, Microglia drug effects, Nerve Degeneration etiology, Nerve Degeneration metabolism, Schizophrenia drug therapy, Schizophrenia genetics, Schizophrenia metabolism, Microglia metabolism, Schizophrenia etiology
- Abstract
While the etiology of schizophrenia remains unclear, there has been a growing amount of evidence pointing to neuroinflammation, which is characterized by an increased serum concentration of several pro-inflammatory cytokines and an increase of microglia in the brain of schizophrenics. Microglia respond rapidly to even minor pathological changes in the brain and may contribute directly to neuronal degeneration by producing various pro-inflammatory cytokines and free radicals. In many aspects, the neuropathology of schizophrenia has recently been reported to be closely associated with microglial activation. Our "Microglia Hypothesis of Schizophrenia" may shed a new light on the therapeutic strategy for schizophrenia.
- Published
- 2014
38. [The activities of Mental Health First Aid-Japan Team].
- Author
-
Otsuka K, Suzuki Y, Fujisawa D, Kato TA, Sato R, Aoyama-Uehara K, Hashimoto N, Suzuki S, and Kurosawa M
- Subjects
- Humans, Japan, Patient Care Team, Suicide Prevention, First Aid, Health Personnel, Mental Disorders psychology, Mental Health
- Abstract
The Mental Health First Aid (MHFA) program is a training program for non-health professionals that deals with persons with a mental health crisis (Kitchener & Jorm, 2006). The MHFA-Japan team was established in 2007, and a founding member completed a MHFA training program in Melbourne, University of Australia. We consulted with Jorm and Kitchener, and started a Japanese study of the program. Providing the MHFA program for gatekeepers in Japan could help them assess risk factors and refer patients for professional care, and contribute to suicide prevention. Our team cooperated with the gatekeeper training program of the cabinet office of the Japanese government. In addition, this program is applied in instructional activities in the area of the Great East Japan Earthquake.
- Published
- 2013
39. [Local instillation of 0.75% ropivacaine compared with intravenous fentanyl and flurbiprofen for postoperative analgesia following inguinal hernia repair in adults].
- Author
-
Miyoshi H, Tanaka H, Kato T, and Kinoshita H
- Subjects
- Aged, Aged, 80 and over, Diclofenac administration & dosage, Humans, Middle Aged, Phenylpropionates administration & dosage, Ropivacaine, Amides administration & dosage, Analgesics administration & dosage, Anesthetics, Intravenous administration & dosage, Anesthetics, Local administration & dosage, Anti-Inflammatory Agents, Non-Steroidal administration & dosage, Fentanyl administration & dosage, Flurbiprofen administration & dosage, Hernia, Inguinal surgery, Intraoperative Care, Pain, Postoperative prevention & control
- Abstract
Background: We compared postoperative analgesia provided by local instillation of 0.75% ropivacaine with that by intravenous fentanyl and flurbiprofen., Methods: Twenty-nine adult patients undergoing an inguinal hernia repair procedure under general anesthesia were randomly divided into Groups F and R according to the method of postoperative analgesia. Those in Group F were administered fentanyl and flurbiprofen, while Group R was given a local instillation of 0.75% ropivacaine (20 ml) into the wound. Non-steroidal anti-inflammatory drugs (NSAIDs, oral loxoprofen 60 mg or rectum delivery of diclofenac at 25 mg) were administered according to patient request after the operation. The Prince Henry pain scale, and the use of NSAIDs and complications were also examined., Results: There were no significant differences between the groups for demographic data. In Group R, the pain score was significantly lower from arrival at the ward to bedtime and the frequency of NSAID use was also significantly lower. No complications were seen in either group., Conclusions: Local instillation of 0.75% ropivacaine is safe and effective, and provides adequate analgesia for a long period in adult patients following an inguinal hernia repair procedure.
- Published
- 2012
40. [Diabetes and colorectal cancer].
- Author
-
Hamaguchi M, Kojima T, and Kato T
- Subjects
- Colorectal Neoplasms etiology, Colorectal Neoplasms therapy, Diabetes Mellitus, Female, Humans, Male, Neoplasm Recurrence, Local, Colorectal Neoplasms complications, Diabetes Complications
- Published
- 2012
41. [Views on the new psychiatric specialist certification system from the perspective of those experiencing the postgraduate psychiatric training system in Japan].
- Author
-
Umene-Nakano W, Uchida N, Kato T, Tateno M, Matsumoto R, and Nakamura J
- Subjects
- Internship and Residency, Japan, Surveys and Questionnaires, Certification, Education, Medical, Graduate, Psychiatry education
- Abstract
The psychiatric specialist certification system of the Japanese Society of Psychiatry and Neurology was established in 2005, with a transitional period that ran until 2008. A three-year postgraduate training scheme was started in connection with the new psychiatric specialist certification system, and the first formal examination under the new system was held in 2010. A resident desiring certification as a psychiatric specialist must purchase a psychiatric specialist certification handbook and present it when taking the examination. There are many differences between the new examination and the transitional period examination, in terms of both the handbook and the number of case reports to be submitted. Results of a survey conducted on 360 psychiatrists belonging to either university or national hospitals, all of whom had undergone psychiatric training within the past eight years, revealed that there was currently a lack of knowledge, and low rate of utilization, of the handbook. The primary author was in the first cohort of those who began postgraduate psychiatric training in a university hospital and subsequently took the first examination administered after the transition period. The author has maintained that, based on personal experience, a number of issues need improvement, such as the large number of grading items to be signed off on by supervising psychiatrists, and complications involving the outline of cases to be experienced. Additionally, it was thought to be difficult for supervisors who had obtained their specialist certification via the transitional period examination to have an adequate understanding of the outline of the new examination. Therefore, it is important that residents themselves take a more assertive attitude to becoming specialists. In the future, in order to establish a sound specialist certification system, the results of this survey of physicians who took the new examination should be taken into account.
- Published
- 2011
42. [Issues and the current situation of the new compulsory residency training program in Japan: the results of an attitude survey for young career psychiatrists].
- Author
-
Umene-Nakano W, Kato T, Tateno M, Hoshuyama T, and Nakamura J
- Subjects
- Adult, Data Collection, Female, Humans, Japan, Male, Middle Aged, Motivation, Attitude of Health Personnel, Internship and Residency, Psychiatry education
- Abstract
The new 2 year compulsory residency training program, which includes rotation to each department and requires 1 month of psychiatric training for all residents, started in April 2004 in Japan. In August to September belonging 2008, we conducted an attitude survey of psychiatrists with 10 or fewer years of experience to 15 institutions to clarify the problems and present condition of primary psychiatric training. Psychiatrists (92%) who experienced the new residency program were satisfied with it, and 41% decided to become a psychiatrist after the primary psychiatric training. We compared the training periods and training institutions. Psychiatrists who experienced training for 3 months or more rate themselves higher with regard to pharmacotherapy, and those who underwent training in private psychiatric hospitals rate themselves higher with regard to their understanding of psychiatric disorders. It was suggested that the introduction of primary psychiatric training has promoted motivation to become a psychiatrist and that the length of the training period and type of institution lead to differences in the acquisition of psychiatric skills. Psychiatrists who train residents thought that the skill that residents most needed to acquire was intervention for suicidal patients, but, for residents, this was the least useful item in their training. It was suggested that, in the current situation, there is an insufficient acquisition of learning items. In 2010, psychiatric rotation will change from a required to an elective subject, but residents will still have the opportunity to select it. We need to consider how to devise a short-term but effective primary psychiatric training program in which residents can acquire the basics of primary care psychiatry.
- Published
- 2010
43. [An autopsy case of hepatocellular carcinoma in which sarcoma-like changes and peritoneal dissemination were observed after RFA/TACE treatment].
- Author
-
Obora A, Kojima T, Kato T, Matsuda H, Horie H, Hashimoto H, Fukuta N, Takano Y, Okuda J, Ida K, and Saio M
- Subjects
- Aged, Autopsy, Carcinoma, Hepatocellular diagnostic imaging, Carcinoma, Hepatocellular pathology, Humans, Liver Neoplasms diagnostic imaging, Liver Neoplasms pathology, Male, Peritoneum pathology, Radiography, Carcinoma, Hepatocellular therapy, Catheter Ablation, Chemoembolization, Therapeutic, Liver Neoplasms therapy
- Abstract
The patient was a 79-year-old male. In December 2002, US findings suggested hepatocellular carcinoma, and he was admitted. Liver biopsy led to a diagnosis of well-differentiated hepatocellular carcinoma. Radio frequency ablation (RFA) was performed. Then, regional relapse was detected, and treatment was repeated. However, follow-up with periodic imaging was continued based on the patient's wishes. RFA was completed in December 2005, and TAI in February 2006. In December 2007, abdominal swelling occurred. CT revealed pleural effusion/ascites and nodular tumor in the adipose tissue of the parietal peritoneum and mesentery around the liver. The patient died due to rapid deterioration. Autopsy revealed a tumor involving the liver surface to the peritoneum, suggesting cancerous peritonitis. Histopathologically, liver cancer showed sarcoma-like changes, directly infiltrating the liver surface to the peritoneum. Hepatocellular carcinoma with sarcoma-like changes and peritoneal dissemination is rare. In the present case, it was possible to compare imaging changes with autopsy findings. We report this patient and review the literature.
- Published
- 2009
44. [A thought on postgraduate psychiatric education from the viewpoint of residents in the latter stage of training based on the system of training of psychiatric specialists--the latter part of the psychiatric training at university hospitals].
- Author
-
Nakano W, Kato T, Tateno M, Ikari K, Tanaka T, Nakamae T, Hojusan T, and Nakamura J
- Subjects
- Japan, Surveys and Questionnaires, Internship and Residency, Psychiatry education
- Published
- 2009
45. [Postgraduate psychiatric training in Japan].
- Author
-
Nakano W, Kato T, Tateno M, and Nakamura J
- Subjects
- Japan, Surveys and Questionnaires, Education, Medical, Graduate, Psychiatry education
- Published
- 2009
46. [Re-evaluation of the "road to becoming a psychiatrist"--learning from the interaction with young psychiatrists from overseas].
- Author
-
Kato T, Tateno M, Nakano W, Balhara YP, Teo RT, Fujisawa D, Sasaki R, and Uchida M
- Subjects
- Data Collection, Japan, International Educational Exchange, Internship and Residency, Psychiatry education
- Published
- 2009
47. [Study by young psychiatrists and significance and future challenge through their interactions--the scenes for learning and mutual support].
- Author
-
Uehara K, Kato T, Hashimoto N, Wake Y, Tanaka T, Baba T, and Fujisawa D
- Subjects
- Information Dissemination, Japan, Psychiatry education, Societies, Medical
- Published
- 2009
48. [Preoperative hypercoagulopathy in patients undergoing orthopedic lower extremity surgery].
- Author
-
Okamura K, Nakagawa I, Hidaka S, Okada Y, Kubo T, and Kato T
- Subjects
- Aged, Aged, 80 and over, Biomarkers blood, Early Diagnosis, Elective Surgical Procedures, Female, Humans, Male, Middle Aged, Risk, Arthroplasty, Replacement, Hip, Arthroplasty, Replacement, Knee, Fibrin Fibrinogen Degradation Products analysis, Hip Fractures blood, Hip Fractures complications, Preoperative Care, Venous Thrombosis diagnosis, Venous Thrombosis etiology
- Abstract
Background: Plasma levels of D-dimer, soluble fibrin monomer complex (SFMC) and FDP were measured in 40 patients for orthopedic lower extremity surgery, using a recently established monoclonal antibody to clarify if these markers are good indicator of deep vein thrombosis(DVT)., Methods: Subjects were 20 patients for total hip arthroplasty (THA) or total knee arthroplasty (TKA) (group A) and 20 patients for hip fracture surgery (group F). D-dimer, SFMC and FDP were measured at induction of anesthesia., Results: Preoperative values of D-dimer, FMC and FDP in group F were higher than those in group A, and these values in group F were higher than normal values., Conclusions: It is concluded that plasma levels of D-dimer, SFMC and FDP in the patients with hip fracture were higher than those in the patients scheduled for TKA or THA in perioperative period. These suggest that the patients with hip fracture have high risk of DVT.
- Published
- 2008
49. [Use of gum elastic bougie for tracheal intubation: comparison of different tracheal tubes].
- Author
-
Kato T, Hidaka S, Nakagawa I, Okada Y, Kubo T, and Okamura K
- Subjects
- Female, Humans, Male, Middle Aged, Intubation, Intratracheal instrumentation
- Abstract
Background: Gum elastic bougie (GEB) is one of the most useful devices for patients whose tracheas are difficult to intubate during anesthetic induction. But no previous study has evaluated the effects of the types of the tracheal tube. We hypothesized that wire-reinforced tracheal tubes were superior to standard tracheal tubes in the success rate of tracheal intubation when using GEB. We compared these two different types of tracheal tubes in using GEB., Methods: Forty patients were subjected and randomly allocated into two groups; patients intubated with standard tracheal tubes (Group , n = 20) and those with wire-reinforced tracheal tubes (Group S, n = 20). Measured variables were intubation time defined as elapsed time from mouth opening to removal of GEB from tracheal tube, heart rate (HR), and systolic blood pressure(SBP). We also compared trial times of intubation and pharyngeal or laryngeal bleeding as a minor side effect., Results: Trachea was successfully intubated in the frist attempt in 37 patients (92.5%), and the rest of the patients were all intubated at second trial. Intubation times of Group P and Group S were 41.5 +/- 13.9s and 41.3 +/- 11.1s, respectively. There were no significant differences in HR and SBP between the groups., Conclusions: The type of tracheal tube would not affect the success rate and time of intubation when using gum elastic bougie.
- Published
- 2008
50. [Use of AirWay Scope for tracheal intubation in bright sunlight].
- Author
-
Nao Y, Kato T, Kusunoki S, Kawamoto M, and Yuge O
- Subjects
- Computer Terminals, Intubation, Intratracheal methods, Liquid Crystals, Manikins, Intubation, Intratracheal instrumentation, Laryngoscopes, Sunlight
- Abstract
Background: The AirWay Scope (AWS), which is equipped with a wide-angle LCD monitor, has been developed to achieve accurate and safe tracheal intubation under various conditions, including emergency settings. However, since bright sunlight degrades the image quality of LCDs, we investigated its usefulness outdoors in bright sunlight., Methods: A single anesthesiologist intubated a mannequin with an AWS and conventional direct laryngoscope indoors and in sunlight outdoors, using 6 trials for each condition. Success rate, Cormack grade, and intubation time from device insertion to removal were recorded., Results: Indoors, all tracheal intubations with both devices achieved Cormack grade 1 and were successful. Outdoors, all the laryngoscopes achieved Cormack grade 1 and intubation was successful, whereas intubation with the AWS was successful in 3 trials, while 2 esophageal intubations and 1 failure also occurred. In addition, sunlight deteriorated the image quality of the LCD and Cormack grade could not be determined. The intubation times for the AWS and laryngoscope indoors were 8.7+/-1.8 and 17.0+/-6.5 sec, and outdoors were 18.7+/-9.0 and 21.3+/-4.9 sec, respectively., Conclusions: Our findings indicate that successful tracheal intubation with an AWS is difficult to achieve in bright sunlight.
- Published
- 2007
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