Faculty Profiles - HANZAWA Kazuhiko

MISC - HANZAWA Kazuhiko

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112 ( 1 ) 46 - 46 1998.1

Cerebral embolism due to left atrial ball thrombus without mitral stenosis -Usefulness of the transesophageal echocardiography for the diagnosis-

Eisuke Furui, Kazuhiko Hanzawa, Mari Hoshiyama, Takashi Nakajima, Nobuyoshi Fukuhara

Clinical Neurology 38 ( 1 ) 13 - 16 1998.1

Detection of Microembolic Signals in Patients with Cardiogenic Embolism-Problems in Detecting Microemboli by Transcranial Doppler Ultrasonography.:—Problems in Detecting Microemboli by Transcranial Doppler Ultrasonography—

FURUI Eisuke, HANZAWA Kazuhiko, HAYASHI Tsunemi, NAKAJIMA Takashi, FUKUHARA Nobuyoshi, TAKAMORI Masaharu

Neurosonology 11 ( 3 ) 123 - 125 1998

Language：Japanese Publisher：The Japan Academy of Neurosonology

Cardiogenic embolism is one of the main causes of stroke. We analyzed the prevalence of microembolic signals (MES) in patients with recent cardiogenic embolism using a multigate technique. We examined 9 patients with cardiogenic embolism and 10 healthy controls, performing transcranial Doppler (TCD) monitoring from one middle cerebral artery using a 2-MHz probe of a multigated tanscranial pulsed Doppler system. The prevalence of MES was 22%. Most of the patients receiving antithrombotic therapy showed no MES. Two patients with acute stroke before initiation of therapy had no MES. In one of them, TCD detected no MES at 4 days after the onset of stroke, but another embolic stroke recurred only one day after TCD monitoring. All the healthy controls were free of MES. TCD was useful for confirming the stroke mechanism and for predicting individual prognosis in some patients. The prevalence of MES was not so high, and TCD did not always detect MES in patients with acute cardiogenic embolism. Recording for longer than 30 min, or on multiple occasions per patient will be necessary.

DOI： 10.2301/neurosonology.11.123

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人工肺・体外循環<脳循環2>

高場利博, 榛沢和彦, 武輪能明, 森義雄, 小林修一

人工臓器 27 ( 4 ) S58 - S59 1998

4)Transcranial Color Flow Imaging(TCCFI)により中大脳動脈狭窄(MCA)を診断した閉塞性動脈硬化症(ASO)の1例(I. 一般演題, 第37回新潟画像医学研究会)

111 ( 10 ) 664 - 665 1997.10

血栓飛来監視のための栓子シグナル検出

榛沢和彦

Journal of medical ultrasonics = 超音波医学 24 ( 9 ) 161 - 161 1997.9

2)多彩な糖尿病性マクロアンギオパチーを呈した1例の16年間について(I.一般演題, 第66回新潟内分泌代謝同好会)

111 ( 5 ) 348 - 348 1997.5

3)意識障害を初発症状とする解離性大動脈瘤について : 救急医療における頸動脈エコーの有用性について(I.一般演題, 第32回新潟救急医学会)

111 ( 3 ) 208 - 208 1997.3

Effects of partial blood replacement with pyridoxalated hemoglobin polyoxyethylene conjugate solution on transient cerebral ischemia in gerbil

Kazuhiko Hanzawa, Hajime Ohzeki, Hisanaga Moro, Shoji Eguchi, Takashi Nakajima, Takao Makifuchi, Kotaro Miyashita, Michiko Nishiura, Hiroaki Naritomi

Artificial Cells, Blood Substitutes, and Immobilization Biotechnology 25 ( 1-2 ) 105 - 114 1997

HITS by TCD in patients with V-A ECMO

Kazuhiko Hanzawa, Hajime Ohzeki, Hisanaga Moro, Hiroshi Watanabe, Junichi Hayashi, Shoji Eguchi, Hiroaki Naritomi

Japanese Journal of Artificial Organs 26 ( 2 ) 359 - 363 1997

HITS by TCD in Patients with V-A ECMO

HANZAWA Kazuhiko, OHZEKI Hajime, MORO Hisanaga, WATANABE Hiroshi, HAYASHI Junichi, EGUCHI Shoji, NARITOMI Hiroaki

Jinko Zoki 26 ( 2 ) 359 - 363 1997

Publisher：JAPANESE SOCIETY FOR ARTIFICIAL ORGANS

We detected HITS in patients with a risk of embolic stroke and V-A ECMO. HITS was detected by TC2020 (EME) with 2.0MHz probe at MCA artery for 15min. HITS was never detected in healthy volunteers (n=20). HITS count in patients with no cerebrovascular disease was 0.5 (n=17). The count in patients receiving open heart surgery without mechanical valve was 0.08 (n=11). In cerebral infarction, HITS was frequently detected, and the counts in patients having antiplatelets (3, n=20) was significantly lower than that in those without antiplatelets (13, n=22) (p<0.01). In mechanical valve replacement, HITS was more frequently than cerebral infarction, and the count in patients suffering from cerebral infarction (83, n=8) was significantly higher her than that in those without a history of stroke (7, n=42) (p<0.01). HITS in patients with V-A ECMO was 118 (ACT=200 sec, n=6) and the count reduced by prolonging ACT. In V-V ECMO, HITS was not detected. HITS was frequently detected in patients with a risk of cerebral infarction. Furthermore, HITS count appeared to be reduced by antiplatelet or anticoagulation therapy. HITS may indicate a risk of embolic event and useful for managing of V-A ECMD.

DOI： 10.11392/jsao1972.26.359

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体外循環中の脳保護

榛沢和彦, 金一, 石橋和幸, 川副浩平, 土井潔, 佐藤伸一, 神田圭一, 圓本剛司, 夜久均, 戸甲省吾, 北浦一弘, 大関一, 和田行雄, 岡噸隆宏, 安野誠, 斉藤知義, 中嶋勉, 大林民幸, 佐藤泰史, 村井則之, 尾形敏郎, 金子達夫, 林純一, 川脇雄次, 穴井博文, 森義顕, 内田雄三, 葉玉哲生, 山口博一郎, 山内秀人, 迫史朗, 西活央, 江口昭治, 山崎芳彦, 矢沢正知, 久保田好光, 米田和広, 樋口雅志

人工臓器 26 ( 0 ) S167 - S170 1997

15)心臓血管外科手術における頚動脈エコーの有用性について(一般演題, 第242回新潟外科集談会)

110 ( 11 ) 531 - 531 1996.11

Report of ICHS

HANZAWA Kazuhiko

9 ( 2 ) 60 - 61 1996.5

1) 脳血管の血行動態評価における経頭蓋エコー検査の現状と応用について(I. 一般演題, 第3回血液・血管研究会)

110 ( 4 ) 159 - 159 1996.4

補助循環(7)

佐藤尚, 村上文彦, 川村光生, 榛沢和彦, 大関一, 諸久永, 林純一, 江口昭治, 成冨博章, 坂田雅宏, 久野克也, 安福正男, 岡田昌義, 碓氷章彦, 廣浦学, 大島英揮, 冨田康裕

人工臓器 25 ( 0 ) S155 - S156 1996

Protective effects of artificial blood substitute against cerebral ischemic injury

K. Hanzawa, H. Ohzeki, H. Moro, J. Hayashi, S. Eguchi, T. Nakajima, T. Makibuchi, H. Naritomi, M. Nishiura, K. Miyashita

Japanese Journal of Artificial Organs 24 ( 1 ) 206 - 210 1995

体外循環前後におけるhypercapnia負荷時の内頸静脈血中NO濃度変化測定の試み

榛沢和彦, 大関一, 林純一, 江口昭治, 平田隆彦, 成冨博章, 中島孝

人工臓器 24 ( 0 ) S130a - S130a 1995

Tetralogy of Fallot with a restrictive ventricular septal defect caused by a membranous flap

M. Shinonaga, H. Miyamura, H. Watanabe, K. Hanzawa, S. Eguchi, I. Satoh

[Zasshi] [Journal]. Nihon Kyōbu Geka Gakkai 42 ( 9 ) 1378 - 1381 1994.9

Successful primary correction for tetralogy of Fallot associated with total anomalous pulmonary venous drainage (type Ia)

M. Shinonaga, S. Eguchi, H. Miyamura, H. Watanabe, S. Nakazawa, M. Sugawara, Y. Takahashi, S. Tatebe, M. Takahashi, K. Hanzawa

Kyobu geka. The Japanese journal of thoracic surgery 47 ( 9 ) 1994.8

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