| Project/Area Number |
04670839
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thoracic surgery
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| Research Institution | Saitama Medical School |
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Principal Investigator |
KYO Shunei Saitama Medical School Faculty of Medicine, Associate Professor, 医学部, 助教授 (30153232)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAMOTO Naomasa Saitama Medical School Faculty of Medicine, Lecturer, 医学部, 助手 (10239444)
MATSUMURA Makoto Saitama Medical School Faculty of Medicine, Assistant Professor, 医学部, 講師 (40190508)
KENMOKU Kyoichi Saitama Medical School Department of Medical Engineering, Chief, 医学部, 主任
OMOTO Ryozo Saitama Medical School Faculty of Medicine, Professor, 医学部, 教授 (80112647)
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| Project Period (FY) |
1992 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1994: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Left Heart Bypass / Percutaneous Assist Circulation / Transseptal Puncture / Transesophageal Echocardiography / Intracardiac Echocardiography / ブロッケンブロ-法 / 経皮的循環補助法 / 心房中隔穿刺 / 経食道心エコー法 / 心腔内エコー法 / 心原性ショック / 経皮的補助循環法 / 心房性ショック / 急性心筋梗塞症 / PTCA |
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| Research Abstract |
The main purpose of this research is firstly to develop anew system for percutaneous left heart bypass and secondly to evaluate the utility and safety of this system in clinical patients. In 1992, we developed a system of percutaneous left heart bypass in collaborating with Medikit company (Tokyo, Japan) which consists of a percutaneous left atrial cannula (18Fr.) and a femoral arterial cannula (14Fr.). The left atrial cannula has 20 small holes (phi 1.5mm) within 3.5 cm from the tip of the cannula and angled 60 degree at 50mm from the tip. This system was designed to be set up easily and safely with guidance of transesophageal echocardiography (TEE) using similar technique of Inoue's balloon mitral valuvuloplasty method. To confirm the technical procedure to set up this system we performed several series of animal experiment using dogs. After confirming the ease of set-up procedure and safety of the system, we applied this system for a patient with severe ischemic heart disease and ca
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rdiac failure during percutaneous trans luminal coronary angioplasty in 1992) with complete informed consent of the patient and his family. During the period of 1992 and 1994, we applied this system for 9 patients with cardiogenic shock or severe heart failure. A dramatic recovery of hemodynamic condition was obtained in all patients, however, we lost 6 patients ultimately due to the deterioration of the cardiac function which already existed prior to apply this system. Autopsy demonstrated no complication relating to this system including the the atrial septal punctured site. The TEE guidance requires an additional specialist to operating TEE system and a definite discomfort of the patient, therefore we r introduced intracardiac ultrasound system (ICUS) for the guidance of atrial transseptal puncture for set-up this system in 1994. We could confirm our PLHB system can be set up very easily even in the intensive care unit without X-ray arrangement within very short period with TEE or ICUS guidance. Less
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