Search Results 1-20 of 1201

  • Relationship between Endothelial Dysfunction and Prevalence of Chronic Kidney Disease: The Circulatory Risk in Communities Study (CIRCS)

    Li Yuting , Kitamura Akihiko , Okada Takeo , Yamagishi Kazumasa , Umesawa Mitsumasa , Ohira Tetsuya , Iso Hiroyasu , the CIRCS investigators , Cui Renzhe , Liu Keyang , Eshak Ehab S. , Cui Meishan , Dong Jiayi , Imano Hironori , Muraki Isao , Kiyama Masahiko

    … We conducted a cross-sectional study of 1042 men and women aged 30–81 years in two communities under the Circulatory Risk in Communities Study between 2013 and 2017. … Endothelial function was evaluated by percent change of brachial artery flow-mediated dilation (%FMD) before and after the cuff inflation. …

    Journal of Atherosclerosis and Thrombosis 28(6), 622-629, 2021


  • Hemodynamic Forces, Endothelial Mechanotransduction, and Vascular Diseases

    Ando Joji , Yamamoto Kimiko

    … Endothelial cells (ECs) lining the inner surface of blood vessels are constantly exposed to shear stress caused by blood flow and a cyclic strain caused by intravascular pressure. … Such endothelial mechanotransduction works to maintain circulatory homeostasis; …

    Magnetic Resonance in Medical Sciences, 2021


  • Extracorporeal Membrane Oxygenation (ECMO) System for Respiratory and Circulatory Support  [in Japanese]

    TSUKIYA Tomonori

    <p>Extracorporeal membrane oxygenation (ECMO) is a respiratory or cardiac life support consisting of a vascular access cannula, a blood pump, and an artificial lung that removes carbon dioxide a …



  • A successful case of postoperative evaluation for digital circulatory failure in secondary reconstruction of amputated finger by using the fish-mouth incision  [in Japanese]

    Okino Takahide , Miyabe Kenta , Sato Nobuhiro , Kadomatsu Kouichi , Ohkubo Fumio

    指尖部に対するfish-mouth incisionは,切断指再接着術後の鬱血予防法の一つであるが,指動脈の開存状態の評価にも有用であるとの報告もある.本症例はプレス機で受傷した右示指,中指完全切断で,玉井分類zoneⅢであった.再接着し得たが,指神経は縫合困難であった.腓腹神経を用いた二次再建施行時,空気止血帯の使用や手術操作による指動脈攣縮による一時的な示指の血流不全を認めた.手術直後に,fi …

    Journal of The Showa University Society 81(1), 47-52, 2021

    IR  J-STAGE 

  • Relationship between Pathological Characteristics and Radiological Findings on Perfusion MR Imaging of Meningioma

    SAITO Atsushi , INOUE Takashi , SUZUKI Shinsuke , EZURA Masayuki , UENOHARA Hiroshi , TOMINAGA Teiji

    … A region of interest (ROI) was set inside of the tumor, and perifocal edema of the same size, cerebral blood volume (CBV), and cerebral blood flow (CBF) on perfusion MR and diffusion-weighted (DW) imaging were analyzed. …

    Neurologia medico-chirurgica 61(3), 228-235, 2021


  • Continuous-Flow Left Ventricular Assist Device Therapy in Adults with Transposition of the Great Vessels

    Sugiura Tadahisa , Kurihara Chitaru , Kawabori Masashi , Critsinelis Andre C. , Civitello Andrew B. , Morgan Jeffrey A. , Frazier O. H.

    … Implantation of a continuous flow left ventricular assist device (CF-LVAD) in these patients can present unusual anatomical and physiologic challenges. …

    Annals of Thoracic and Cardiovascular Surgery 27(1), 64-67, 2021


  • Use of Impella CP Device in Off-Pump Coronary Artery Bypass Graft Surgery

    Upadhyaya Vandan D. , Campbell Stuart , Douedi Steven , Patel Ishan , Asgarian Kourosh T. , Saybolt Matthew D.

    … <p>Off-pump coronary artery bypass grafting (OPCABG) may be performed on patients with high surgical risk who are poor candidates for traditional mechanical circulatory support. … Hemodynamic support with micro-axial mechanical circulatory devices has been performed with limited but promising results.</p><p>We report a case of a 66-year-old male with multiple comorbidities and low cardiac output undergoing OPCABG. …

    International Heart Journal 62(1), 175-177, 2021


  • Difference between Non-Newtonian Carreau and Casson Blood Viscosity Models to Predict Hemodynamics in Idealized Eccentric Arterial Stenosis: Large Eddy Simulation Modeling

    Shamudra Dey , Tahsin Ibtida , Chandan Kumar Roy , Nuruzzaman Sakib

    … Considering the swirl component of blood, a unique parabolic and pulsatile inlet velocity boundary condition is created to represent a realistic blood flow. … By using proposed framework, the precise blood flow configuration and turbulent characteristics of the circulatory system are represented in a specific design. …

    Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES) (6), 249-257, 2020-10-22

    IR  DOI 

  • Multi-camera large-scale particle image velocimetry

    Tsubaki Ryota


    Measurement Science and Technology 31(8), 084004, 2020-05-25


  • A Prospective Observational Study of Cerebral Circulatory Changes during Induction of General Anesthesia Using Near-infrared Time-resolved Spectroscopy and Transcranial Doppler Ultrasonography  [in Japanese]

    副島 崇旨 , 内田 洋介 , 斉藤 仁志 , 森本 裕二

    麻酔 = The Japanese journal of anesthesiology : 日本麻酔科学会準機関誌 69(5), 530-537, 2020-05

    Ichushi Web 

  • Association between Changes in Cardiac Function and Changes in Vascular Function in Response to Vasoactive Drugs in Rabbits  [in Japanese]

    HORIKOSHI Yuko , KATSUDA Shin-ichiro , HAZAMA Akihiro

    <p> アンジオテンシンⅡ (Ang Ⅱ) およびニトロプルシッドナトリウム (NTP) 投与に対する循環動態変化と心機能変化との関連についてウサギを用いて実験的に検討した.Ang Ⅱ投与により収縮期血圧 (SBP),拡張期血圧 (DBP),平均血圧 (MAP),収縮期後方成分 (S<sub>2</sub>) (=脈圧;PP),総末梢血管抵抗 (TPR),aug …

    Journal of Clinical Physiology 50(3), 127-132, 2020


  • Aortic Stiffness Is Associated with Coronary Microvascular Dysfunction in Patients with Non-obstructive Coronary Artery Disease

    Muroya Takahiro , Kawano Hiroaki , Koga Seiji , Ikeda Satoshi , Yamamoto Fumi , Maemura Koji

    … </p><p><b>Methods </b>The intracoronary physiological variables in 209 coronary arteries were evaluated in 121 patients with non-obstructive CAD (fractional flow reserve >0.80) or reference vessels. …

    Internal Medicine 59(23), 2981-2987, 2020


  • Practical Management of ECPELLA

    Nakamura Makiko , Imamura Teruhiko

    … <p>Veno-arterial extracorporeal membrane oxygenation (ECMO) is a strong mechanical circulatory device for patients with hemodynamic deterioration due to cardiogenic shock, but its drawback is an increase in left ventricular afterload. … The Impella axial-flow transcatheter left ventricular assist device is a recently developed promising device to mechanically unload the left ventricle, although its support flow may not necessarily be sufficient to support shock vital. …

    International Heart Journal 61(6), 1094-1096, 2020


  • Percutaneous Cardiopulmonary Support:PCPS  [in Japanese]

    ITO Asuka

    <p>経皮的心肺補助装置(percutaneous cardiopulmonary support:PCPS)は,遠心ポンプと体外膜型人工肺で構成される人工心肺装置である.静脈から血液を脱血して人工肺で酸素化し,ポンプで動脈に送血する呼吸循環補助装置で,強力な流量補助が可能である.PCPSの適応は,他の一般的な治療法で維持困難な急性循環不全や心肺停止状態であるが,導入後の救命率は全体平 …


    J-STAGE  Ichushi Web 

  • A case of refractory dialysis access-associated steal syndrome successfully treated by additional stellate ganglion block  [in Japanese]

    FUJITA Yosuke , NISHIYAMA Takahisa , MAEDA Ryoji , TOMINO Mikiko , IWASE Naoto , ITABASHI Toshio

    <p>内シャント設置後に生じた透析アクセス関連スチール症候群(以下,スチール症候群)にシャント閉鎖術を施行されたが,指尖部の虚血症状が残存した.この残存した虚血症状に星状神経節ブロック(以下,SGB:stellate ganglion block)が奏効した症例を報告する.50歳代男性,慢性腎不全のため10年前に内シャントを左前腕に設置された.当科初診2カ月前より透析時に増悪する左手指 …

    Journal of Japan Society of Pain Clinicians 27(4), 335-339, 2020

    J-STAGE  Ichushi Web 

  • Evaluation of peripheral circulation in the fingers of individuals who handle vibra tion tools using laser speckle flowgraphy  [in Japanese]

    YOSHITAKE Hidetaka , ADACHI Hiroaki , OGAMI Akira , MICHII Satoshi , SHIRASAKA Taiki , SUGANO Ryosuke , ANDO Hajime , NOZAWA Hiroki , HASEGAWA Masayuki , IKEGAMI Kazunori , OHNARI Keiko

    <p>我が国で,振動障害はチェーンソーによる白ろう病が広く認知されているが,使用時間の制限や機械の低振動化によりそれらは減少傾向にある.一方,製造業を中心にグラインダーなどの振動工具を取扱う作業者は100万人を超えると推定されるが,振動業務健康診断の受診者は約63000人程度にとどまっている.近年,レーザースペックルフローグラフィー(LSFG)を用いた皮膚血流測定の適応可能性が示された …

    Journal of Occupational Safety and Health 13(2), 157-166, 2020

    J-STAGE  Ichushi Web 

  • Determinants of In-Hospital Death Among the Very Elderly with Acute Myocardial Infarction

    Seguchi Masaru , Sakakura Kenichi , Tsukui Takunori , Yamamoto Kei , Taniguchi Yousuke , Wada Hiroshi , Momomura Shin-ichi , Fujita Hideo

    … = 0.048), final Thrombolysis In Myocardial Infarction (TIMI) flow grade 3 (versus TIMI ≤ 2: OR 0.240, 95% CI 0.093-0.618, <i>P</i> … = 0.003), and mechanical circulatory support (OR 4.264, 95% CI 1.818-10.005, <i>P</i> …

    International Heart Journal 61(5), 879-887, 2020


  • Development of the circulatory simulator for generating coronary hemodynamics with microcirculation  [in Japanese]

    Ikehara Masaaki , Tsuboko Yusuke , Matsubara Kaito , Hattori Kaoru , Niinami Hiroshi , Iwasaki Kiyotaka

    <p>冠動脈病変の治療法として冠動脈バイパス術(CABG)と経皮的冠動脈形成術(PCI)があり,複雑な狭窄性病変に関してはCABGが長期予後で優れている.要因として,CABGは冠動脈の分枝血流・微小循環障害を起こさずPCIでは治療困難な病変に治療が行える点が挙げられているが,それらを定量的に示す報告は少ない.当施設では,両治療法が左冠動脈に及ぼすコンプライアンス変化と血行力学的差異の実 …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 391-391, 2020


  • Development of pulsatile circulatory system for measuring ascending aorta hemodynamics with 4D-MRI  [in Japanese]

    Nakama Natsuki , Iwasaki Kiyotaka , Hattori Kaoru , Takada Junpei , Nishimura Gouki , Moriwaki Ryo , Kawasaki Eita , Nagao Mitunobu , Gotou Yasuhiro , Tsuboko Yusuke

    <p>大動脈二尖弁疾患とは通常3枚ある弁尖が分離発育せず2枚となる先天性疾患である.弁尖が癒合する位置や交連角度の違いにより弁開口形態が多岐にわたり,上行大動脈拡大に影響するとされるが,弁形態ごとの上行大動脈の血流パターンは明らかでない.本研究では,二尖弁疾患における弁形態と上行大動脈の血行動態との関連を定量化するべく,生体大動脈の流量・圧力環境を創出可能かつ,4D-MRIを用いた流れ …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 386-386, 2020


  • Development of pulsatile circulatory system for measuring ascending aorta hemodynamics with 4D-MRI  [in Japanese]

    Nakama Natsuki , Iwasaki Kiyotaka , Hattori Kaoru , Takada Junpei , Nishimura Gouki , Moriwaki Ryo , Kawasaki Eita , Nagao Mitunobu , Gotou Yasuhiro , Tsuboko Yusuke

    <p>大動脈二尖弁疾患とは通常3枚ある弁尖が分離発育せず2枚となる先天性疾患である.弁尖が癒合する位置や交連角度の違いにより弁開口形態が多岐にわたり,上行大動脈拡大に影響するとされるが,弁形態ごとの上行大動脈の血流パターンは明らかでない.本研究では,二尖弁疾患における弁形態と上行大動脈の血行動態との関連を定量化するべく,生体大動脈の流量・圧力環境を創出可能かつ,4D-MRIを用いた流れ …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 114-114, 2020


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