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Affiliation |
Hospital Cardio-Vascular Surgery |
Graduating School 【 display / non-display 】
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-2011.03
Akita University Faculty of Medicine Graduated
Graduate School 【 display / non-display 】
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-2020.03
Akita University Graduate School, Division of Medicine Doctor's Course Completed
Campus Career 【 display / non-display 】
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2022.12-Now
Akita University Hospital Cardio-Vascular Surgery Lecturer
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2020.06-2022.11
Akita University Graduate School of Medicine Doctorial Course in Medicine Organ Function-Oriented Medicine Assistant Professor
Thesis for a degree 【 display / non-display 】
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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
Research Achievements 【 display / non-display 】
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Modified Protocol of Cardiac Surgery Advanced Life Support
Takagi Daichi, Kadohama Takayuki, Kiriu Kentaro, Itagaki Yoshinori, Wada Takuya, Arai Takeshi, Igarashi Itaru, Yamazaki Yuya, Igarashi Wataru, Yamamoto Hiroshi
Japanese Journal of Cardiovascular Surgery ( The Japanese Society for Cardiovascular Surgery ) 52 ( 4 ) 239 - 243 2023.07 [Refereed]
Research paper (journal) Single author
<p>Cardiac Surgery Advanced Life Support (CALS) has been introduced as a cardiopulmonary resuscitation (CPR) after cardiac surgery since 2006, and has been recommended by Society of Thoracic Surgeons (STS) since 2017 and by the AHA (American Heart Association) guideline since 2020. The modified CALS protocol, which was partially revised to fit Japanese medical situations, was introduced to our hospital in 2019. Of 550 patients who underwent cardiac surgeries from April 2019 through May 2021, 6 patients (1.1%) (mean age: 51.8±27.2 years.) were resuscitated by the CALS protocol. We describe a case of repeated ventricular fibrillation (VF) due to R on T caused by ischemia-reperfusion injury. A 67-year-old man underwent aortic root replacement, total aortic arch repair, and coronary artery bypass surgery for a Stanford A type acute aortic dissection with right coronary artery malperfusion and cardiac tamponade. On the day of surgery, the patient was in VF and returned to sinus rhythm by prompt defibrillation by the ICU staff, but VF repeated every few minutes. Repeated VF was resolved by timely resternotomy, cardiac massage, and percutaneous extracorporeal circulatory support. Chest compression was avoided and the patient was discharged without neurological complications. The CALS protocol has enabled us to perform rapid CPR and resternotomy for cardiac arrest after cardiac surgery.</p>
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Mounai Y.
Case Reports in Oncology ( Case Reports in Oncology ) 21 - 29 2023 [Refereed]
Research paper (journal) Domestic Co-author
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Translocation of the Isolated Left Vertebral Artery during Thoracic Endovascular Stent-Graft Repair
Arai Takeshi, Takagi Daichi, Wada Takuya, Igarashi Itaru, Yamazaki Yuya, Igarashi Wataru, Kadohama Takayuki, Yamamoto Hiroshi
Japanese Journal of Cardiovascular Surgery ( The Japanese Society for Cardiovascular Surgery ) 51 ( 4 ) 240 - 244 2022.07
<p>Spinal cord injury (SCI) is a main concern in patients who undergo thoracic endovascular therapy (TEVAR), because the blood flow of the vertebro-basilar artery may be reduced due to the left subclavian artery (LSA) occlusion. If the left vertebral artery originates directly from the aorta, which is called the isolated left vertebral artery (ILVA), a technical consideration for strategies regarding blood perfusion of the ILVA during TEVARs is required. We hereby aim to report three patients (No.1, No.2, and No.3) who underwent an ILVA translocation and TEVAR with Zone 2 landing for aortic dissection. The diameter of the ILVA was 4.2, 2.3, and 2.2 mm, respectively, and the right vertebral artery (RVA) was dominant in all cases. In Patient No.1 and No.2 (ILVA diameter: 4.2 and 2.3 mm, respectively), the ILVA was anastomosed directly to the left common carotid artery. In Patient No.2, the translocated ILVA was occluded resulting in SCI, but the SCI improved when blood pressure was augmented. In Patient No.3 (ILVA diameter: 2.2 mm), the saphenous vein graft was interposed between the ILVA and the bypass artery because the ILVA diameter was small, but postoperatively, the ILVA remained patent, and no paraplegia was observed. The occlusion of ILVA could cause SCI, even if the RVA is larger than the LVA. Reconstruction of the ILVA is a critical procedure to prevent postoperative SCIs in patients undergoing TEVARs.</p>
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Recent Progress in Cardiovascular Surgery 2020
Takagi Daichi, Yamamoto Hiroshi
Japanese Journal of Cardiovascular Surgery ( The Japanese Society for Cardiovascular Surgery ) 50 ( 5 ) 351 - 353 2021.09
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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 2020.09
<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>
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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>
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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>
◆Original paper【 display / non-display 】
◆Other【 display / non-display 】
Grant-in-Aid for Scientific Research 【 display / non-display 】
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Grant-in-Aid for Early-Career Scientists
Project Year： 2021.04 - 2024.03