Graduate School of Medicine  Doctorial Course in Medicine  Organ Function-Oriented Medicine  Department of Cardiovascular Surgery

Graduating School 【 display / non-display


    Akita University   Faculty of Medicine   Graduated

Graduate School 【 display / non-display


    Akita University  Graduate School, Division of Medicine  Doctor's Course  Completed

Campus Career 【 display / non-display

  • 2020.06

    Akita University   Graduate School of Medicine   Doctorial Course in Medicine   Organ Function-Oriented Medicine   Assistant Professor  


Thesis for a degree 【 display / non-display

  • Comparative study of hyperpolarization-activated currents in pulmonary vein cardiomyocytes isolated from rat, guinea pig, and rabbit

    Daichi Takagi, Yosuke Okamoto, Takayoshi Ohba, Hiroshi Yamamoto,Kyoichi Ono 

      2020.03  [Refereed]

    Single author

Published Papers 【 display / non-display

  • Significance of Surgical Therapy for Right Heart Malignant Tumors: A 5-case Report

    Kiryu Kentaro, Kadohama Takayuki, Tanaka Fuminobu, Takagi Daichi, Yamamoto Hiroshi

    The Japanese Journal of Phlebology ( Japanese Society of Phlebology )  31 ( 2 ) 57 - 63   2020

    <p>Cardiac tumors are rare, and if malignant, the prognosis is often poor. Specific complications occur depending on the site, and pulmonary tumor embolism is most fatal when the tumor site is in the right heart. Although, surgical intervention does not necessarily improve the prognosis of the tumor itself or survival, surgery can prevent sudden death and improve heart failure symptoms, which in turn is expected to improve the activities of daily living (ADL) and maintain the quality of life (QOL) by allowing hospital discharge. In cases of metastatic tumors or tumors due to progression of liver or kidney cancer, resection of the tumor not only improves ADL and QOL but may also prolong survival and improve prognosis. This study presents five cases of right cardiac malignant tumors in which surgical intervention using cardiopulmonary bypass was performed. In two cases, the patients died early but in the remaining three, relatively longer survival was observed. The patients were discharged and returned home but died later. Postoperative adjuvant chemotherapy may be effective in such cases depending on the tumor morphology. We conclude that surgical intervention was able to prevent sudden death, and a diagnosis followed by adjuvant chemotherapy might extend the survival. On the other hand, early postoperative lung and pulmonary circulatory disorders may be at risk of progressing to DIC and MOF and impairing survival.</p>

    DOI CiNii

  • Role of the Japanese Board of Cardiovascular Surgery for Young Surgeons No.1

    Tanaka Chiharu, Takagi Daichi

    Japanese Journal of Cardiovascular Surgery ( The Japanese Society for Cardiovascular Surgery )  49 ( 5 ) 5 - U1-5-U5   2020

    <p>Japanese board of cardiovascular surgery is changing to new system. To discuss about future education, the cardiovascular surgeons should know more about the new system. The present article demonstrated the questionnaire survey about the board, and evaluated its outcome. This is the first article of the column series about the board. We hope the article is useful information for the young surgeons, and the surgeons will discuss about better environment for training in new era.</p>

    DOI CiNii

  • A Questionnaire Survey of Regarding the Internal Thoracic Artery Harvesting Targeting Under 40 Cardiovascular Surgeons No.11

    Takagi Daichi

    Japanese Journal of Cardiovascular Surgery ( The Japanese Society for Cardiovascular Surgery )  48 ( 3 ) 3 - U1-3-U5   2019

    <p>Basic procedures that cardiovascular surgeons routinely perform are rarely discussed, despite the great variability among facilities. The aim of this study is to survey the current status of internal thoracic artery harvesting in cardiovascular surgeons aged under 40 years old, and to share the results of this questionnaire investigation regarding basic skills.</p>

    DOI CiNii

  • Tumorectomy to Avoid Sudden Death by Pulmonary Embolism in a Patient with a Cardiac Tumor Originating from the Esophagus

    Kiryu Kentaro, Kadohama Takayuki, Yamaura Gembu, Chida Yosifumi, Tanaka Fuminobu, Takagi Daichi, Itagaki Yoshinori, Yamamoto Hiroshi

    Japanese Journal of Cardiovascular Surgery ( The Japanese Society for Cardiovascular Surgery )  48 ( 3 ) 170 - 172   2019

    <p>Tumor metastasis to the endocardium is rare. The patient was 58-year-old man who was given a diagnosis of a metastatic tumor to the right atrium and right ventricle. The tumor originated from the esophagus, and the patient was at risk of sudden death caused by acute pulmonary embolism. We performed tumorectomy to reduce the risk of sudden death. The postoperative course was satisfactory, and the tumorectomy was followed by chemotherapy. The 5-year survival rate in such cases has been reported to be only approximately 11%. However, resection of tumor mass may be useful for improving postoperative QOL and reducing the risk of sudden death.</p>

    DOI CiNii

  • Pulmonary Thromboembolism Caused by a Traumatic Aneurysm of the Popliteal Vein

    Kiryu Kentaro, Yamaura Gembu, Kadohama Takayuki, Tanaka Fuminobu, Takagi Daichi, Yamamoto Hiroshi

    Japanese Journal of Vascular Surgery ( JAPANESE SOCIETY FOR VASCULAR SURGERY )  27 ( 3 ) 221 - 223   2018

    <p>A popliteal vein aneurysm (PVA) could be an important pathology causing pulmonary thromboembolism (PTE). We report a rare case of traumatic PVA. A 59-year-old woman presented an onset of syncope and hypoxemia. The Computed tomography and ultrasonography revealed PTE and PVA. Because she had a risk of repetive PTE, she was refered to our department for surgery. We performed PVA resection and closure of the aneurysm ostium, which was followed by anticoagulant therapy for one year. To date there is no recurrence of vein thrombosis or PTE.</p>

    DOI CiNii

display all >>