Yoshitaka Kiyota

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We examined the in vitro closing behavior of the St. Jude Medical heart valve, simulating (1) a low-pressure system, (2) the anatomic peculiarity of the right ventricular outflow tract and the main pulmonary artery, and (3) disturbed diastolic compliance of the right ventricle. The variables in the experiment were the load impedance to the pump and the(More)
A 98-day-old infant was successfully operated on for truncus arteriosus (type I) with interrupted aortic arch (type B) using a one-stage anterior approach. The interrupted aortic arch was reconstructed by direct anastomosis between the ascending and descending aorta. The ventricular septal defect was closed, and a 12-mm porcine valved conduit was placed on(More)
The advantage of laparoscopic surgery is obvious and has been extended to pancreatic and splenic operations. Since 1994, various laparoscopic pancreatectomy, including pancreatoduodenectomy (Gagner & Pomp, 1994), enucleation (Gagner et al., 1996; Dexter et al., 1999), and distal pancreatectomy (Gagner et al. 1996; Sussman et al., 1996), have been performed.(More)
A 55-year-old woman consulted our hospital complaining of abdominal distention and vomiting. She was diagnosed with a malignant tumor in the small intestine and an ovarian tumor with an upper gastro-intestinal series based on a computerized tomography(CT)examination. Intra-operative findings showed that the primary tumor was located in the proximal jejunum,(More)
The patient was an 82-year-old man who had undergone resection of a gastrointestinal stromal tumor(GIST)of the small intestine in January 2000, when he was 69 years old. As peritoneal recurrences were diagnosed in June 2002, we performed peritoneal tumorectomy twice, and the perirectal tumor was controlled with imatinib for over 7 years. Resistance to(More)