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Your search keyword '"Koichi Maeda"' showing total 6 results
Start Over Author "Koichi Maeda" Journal journal of cardiac surgery
6 results on '"Koichi Maeda"'

1. Transcatheter aortic valve replacement as a bridge to surgical aortic valve replacement in a younger patient with extremely high surgical risk

Author

Yu Yamada, Koichi Toda, Kazuo Shimamura, Koichi Maeda, Toru Kuratani, and Yoshiki Sawa

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, Ejection fraction, business.industry, medicine.medical_treatment, 030204 cardiovascular system & hematology, medicine.disease, Surgery, 03 medical and health sciences, Aortic aneurysm, Stenosis, 0302 clinical medicine, Bicuspid aortic valve, Bridge (graph theory), 030228 respiratory system, Aortic valve replacement, Valve replacement, medicine.artery, Ascending aorta, cardiovascular system, medicine, Cardiology and Cardiovascular Medicine, business
Abstract

A 50-year-old man with decompensated aortic stenosis displayed significantly reduced ejection fraction, an ascending aortic aneurysm (55 mm in diameter), and bilateral giant bullae, and was evaluated as having extremely high surgical risk. Therefore, as a bridge to definitive treatment, he simultaneously underwent transcatheter aortic valve replacement (TAVR) and upper left lung lobectomy. His heart function recovered 6 months later and he underwent surgical aortic valve replacement (SAVR) and graft replacement of the ascending aorta. TAVR may serve as a bridge procedure before SAVR for aortic stenosis in younger patients with high surgical risk.

Published
2020

2. Transcatheter aortic valve replacement in a patient with Werner syndrome

Author

Koichi Maeda, Kenta Masada, Yoshiki Sawa, Kei Torikai, and Toru Kuratani

Subjects
Male, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Transcatheter aortic, medicine.medical_treatment, 030204 cardiovascular system & hematology, Coronary Angiography, Achilles Tendon, Transcatheter Aortic Valve Replacement, 03 medical and health sciences, 0302 clinical medicine, Valve replacement, Internal medicine, Multidetector Computed Tomography, Skin Ulcer, Elbow, medicine, Humans, Werner syndrome, business.industry, Calcinosis, Aortic Valve Stenosis, Middle Aged, medicine.disease, Treatment Outcome, 030228 respiratory system, Echocardiography, Aortic Valve, Cardiology, Surgery, Werner Syndrome, Cardiology and Cardiovascular Medicine, business
Published
2017

3. Surgical Treatment of Coronary Arteriovenous Fistulas and Aortic Valve Insufficiency

Author

Shigeru Miyagawa, Takayoshi Ueno, Koichi Maeda, Yasushi Yoshikawa, Toru Kuratani, Satsuki Fukushima, Yoshiki Sawa, Koichi Toda, and Hiroyuki Nishi

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Takayasu arteritis, Aortic Valve Insufficiency, medicine.disease, law.invention, Aortic valve replacement, Coronary steal, law, Internal medicine, medicine, Cardiopulmonary bypass, Cardiology, Surgery, Cardiology and Cardiovascular Medicine, Surgical treatment, Ligation, business
Abstract

We report a 76-year-old female with Takayasu arteritis who was found to have multiple coronary arteriovenous fistulas (CAVFs), a pulmonary-to-systemic ratio of 2:1, and aortic valve insufficiency. Aortic valve replacement and ligation of multiple CAVFs with cardiopulmonary bypass were performed under cardioplegic arrest, thus minimizing coronary steal. doi: 10.1111/jocs.12102 (J Card Surg 2013;28:380–382)

Published
2013

4. On-pump Transcatheter Aortic Valve Replacement in Patients with Poor Left Ventricular Function

Author

Koichi Maeda, Yoshiki Sawa, Kei Torikai, Toru Kuratani, and Kazuo Shimamura

Subjects
Pulmonary and Respiratory Medicine, Cardiac Catheterization, medicine.medical_specialty, Transcatheter aortic, medicine.medical_treatment, Severity of Illness Index, Ventricular Function, Left, Valve replacement, Internal medicine, Humans, Medicine, In patient, Aged, Heart Valve Prosthesis Implantation, Lv function, Cardiopulmonary Bypass, Ventricular function, business.industry, Aortic Valve Stenosis, medicine.disease, Stenosis, Treatment Outcome, cardiovascular system, Cardiology, Female, Surgery, Cardiology and Cardiovascular Medicine, business
Abstract

Transcatheter aortic valve replacement (TAVR) has recently been shown to be feasible in patients with severe aortic stenosis who are considered inoperable. We perform TAVR with cardiopulmonary support (CPS) for patients with low left ventricular (LV) function. We report two successful cases of TAVR on CPS in patients with low LV function and describe this technique. (J Card Surg 2012;27:686-688)

Published
2012

5. Transcatheter Aortic Valve Replacement using DynaCT

Author

Kazuo Shimamura, Yoshiki Sawa, Toru Kuratani, Koichi Maeda, and Kei Torikai

Subjects
Male, Pulmonary and Respiratory Medicine, Cardiac Catheterization, medicine.medical_specialty, Transcatheter aortic, medicine.medical_treatment, Prosthesis Implantation, Valve replacement, Humans, Medicine, Intraoperative imaging, Radiological imaging, Aged, 80 and over, business.industry, Ultrasonography, Doppler, Aortic Valve Stenosis, medicine.disease, Radiographic Image Enhancement, Treatment Outcome, Fluoroscopy, Heart Valve Prosthesis, Aortic valve stenosis, Surgery, Radiology, Tomography, X-Ray Computed, Cardiology and Cardiovascular Medicine, business, Follow-Up Studies
Abstract

We report a successful transcatheter aortic valve replacement (TAVR) using syngo DynaCT (Siemens AG, Forchheim, Germany) in an 86-year-old man who had severe aortic valve stenosis. Syngo DynaCT is a cross-sectional radiological imaging system that facilitates intraoperative imaging via interventional angiographic systems; this navigation system is useful during TAVR, especially in cases of poor calcification at the annulus. (J Card Surg 2012;27:551-553)

Published
2012

6. Surgical treatment of coronary arteriovenous fistulas and aortic valve insufficiency

Author

Koichi, Maeda, Yasushi, Yoshikawa, Shigeru, Miyagawa, Hiroyuki, Nishi, Satsuki, Fukushima, Takayoshi, Ueno, Koichi, Toda, Toru, Kuratani, and Yoshiki, Sawa

Subjects
Heart Valve Prosthesis Implantation, Cardiopulmonary Bypass, Aortic Valve Insufficiency, Coronary Disease, Takayasu Arteritis, Treatment Outcome, Coronary-Subclavian Steal Syndrome, Aortic Valve, Arteriovenous Fistula, Heart Arrest, Induced, Humans, Female, Intraoperative Complications, Ligation, Vascular Surgical Procedures, Aged
Abstract

We report a 76-year-old female with Takayasu arteritis who was found to have multiple coronary arteriovenous fistulas (CAVFs), a pulmonary-to-systemic ratio of 2:1, and aortic valve insufficiency. Aortic valve replacement and ligation of multiple CAVFs with cardiopulmonary bypass were performed under cardioplegic arrest, thus minimizing coronary steal.

Published
2013

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