Search results for: Kazuhiko Katsuyama

Items from 1 to 11 out of 11 results

article

Portal circle

Ryo Ataka, Kazuhiko Katsuyama, Tomoyuki Yamada

Journal of Hepato‐Biliary‐Pancreatic Sciences > 29 > 3 > e10 - e11

Highlight A 51‐year‐old man was referred for further evaluation of a hepatic anomaly detected on abdominal ultrasonography. Contrast‐enhanced computed tomography showed an extremely rare portal venous anomaly, almost like a ‘portal circle’. Ataka and colleagues present the first report of this type of anomaly and describe it from an embryological perspective.

article

Factors involved in correct analysis of intracardiac electrograms captured by Medtronic Inc. pacemakers during tachycardias

Masaru Takagaki, Shigeru Ikeguchi, Tomoyuki Yamada, Kazuhiko Katsuyama, more

Journal of Arrhythmia > 2013 > 29 > 4 > 204-210

To thoroughly investigate the diagnostic information obtained by pacemakers, it is important that the stored intracardiac electrograms (EGMs) are analyzed. However, in Medtronic pacemakers, only a single intracardiac recording channel is available and thus EGM channel selection is critical.The study population comprised 150 patients who underwent implantation of Medtronic's dual chamber pacemakers...

article

Myocardial High-Energy Phosphates and Hepatic Redox State in Jaundiced Rats

Kazuhiko Katsuyama, Kazue M.D. Ozawa, Shigehiro Morikawa, Shingo Iwata, more

Journal of Surgical Research > 1999 > 82 > 1 > 88-94

Background.The mechanism underlying the fatal complications in jaundiced states after shock has not been fully clarified. The present study was designed to examine the effect of hemorrhagic shock on myocardial high-energy phosphate stores and the arterial ketone body ratio (AKBR:acetoacetate/β-hydroxybutyrate), which reflects the redox state of the liver mitochondria, in normal and jaundiced rats...

article

Combined catheter embolization and femorofemoral bypass for pseudoaneurysm of the right external iliac artery: Report of a case

Shoji Watarida, Shoichiro Shiraishi, Kazuhiko Katsuyama, Yasuhiko Nakajima, more

Surgery Today > 1999 > 29 > 1 > 83-85

Performing direct surgery for postoperative hemorrhage caused by intraperitoneal arterial injury is very difficult. We report herein the case of a 52-year-old woman who developed sudden right lower abdominal pain after numerous laparotomies and radiotherapy for advanced uterine cancer. A diagnosis of pseudoaneurysm of the right external iliac artery was made, and an emergency catheter embolization...

article

Combined Catheter Embolization and Femorofemoral Bypass for Pseudoaneurysm of the Right External Iliac Artery: Report of a Case

Shoji Watarida, Shoichiro Shiraishi, Kazuhiko Katsuyama, Yasuhiko Nakajima, more

Surgery Today > 1999 > 29 > 1 > 83-85

Abstract: Performing direct surgery for postoperative hemorrhage caused by intraperitoneal arterial injury is very difficult. We report herein the case of a 52-year-old woman who developed sudden right lower abdominal pain after numerous laparotomies and radiotherapy for advanced uterine cancer. A diagnosis of pseudoaneurysm of the right external iliac artery was made, and an emergency catheter embolization...

article

Reconstruction of the aortic arch in invasive thymoma under retrograde cerebral perfusion

Shozo Fujino, Noriaki Tezuka, Shoji Watarida, Kazuhiko Katsuyama, more

The Annals of Thoracic Surgery > 1998 > 66 > 1 > 263-264

Extensive en-bloc resection of the aortic arch and anterior wall of the main pulmonary artery was performed in a 46-year-old man with invasive thymoma. The aortic arch was replaced with a Hemashield vascular graft under hypothermic circulatory arrest with retrograde cerebral perfusion. Patch plasty with Xenomedica was performed for the anterior wall of the main pulmonary artery under cardiopulmonary...

article

Unruptured Aneurysm of the Sinus of Valsalva Into the Pulmonary Artery

Shoichiro Shiraishi, Shoji Watarida, Kazuhiko Katsuyama, Yasuhiko Nakajima, more

The Annals of Thoracic Surgery > 1998 > 65 > 5 > 1458-1459

Congenital aneurysms of the sinus of Valsalva are rare lesions. Because the aortic root is central, the aneurysm can rupture into any cardiac chamber, and virtually all combinations of sinus and chamber fistulas have been described. Rupture into the pulmonary artery, however, is very rare. We encountered a 14-year-old boy with conal ventricular septal defect and right coronary cusp prolapse with an...

article

Myxoma of the Aortic Valve

Shoji Watarida, MD, Kazuhiko Katsuyama, MD, Ryuzaburo Yasuda, MD, Tatsuo Magara, MD, more

The Annals of Thoracic Surgery > 1997 > 63 > 1 > 234-236

Myxoma of the aortic valve is exceedingly uncommon. In this article, we report a 58-year-old man with myxoma arising from the aortic valve. Aortic valve replacement was performed, and postoperative histologic examination showed myxoma of aortic valve.(Ann Thorac Surg 1997;63:234-6)

article

Interleukin-10 concentration in children undergoing cardiopulmonary bypass

Takaaki Sugita, Shoji Watarida, Kazuhiko Katsuyama, Yasuhiko Nakajima, more

The Journal of Thoracic and Cardiovascular Surgery > 1996 > 112 > 4 > 1127

article

Clinical significance of reverse redistribution phenomenon after coronary artery bypass grafting

Shoji Watarida, Masahiko Onoe, Takaaki Sugita, Ryoko Tabata, more

The Annals of Thoracic Surgery > 1995 > 59 > 6 > 1528-1533

The reverse redistribution (RR) phenomenon is a decrease in thallium 201 uptake during redistribution compared with ²⁰¹ Tl uptake immediately after exercise. We evaluated RR in 23 patients after coronary artery bypass grafting. Postoperative RR was present in 48% and was significantly more common in patients with a history of myocardial infarction (62%). The patients were classified according...

article

Dissection with double arch

Takaaki Sugita, Ryuzabro Yasuda, Tatsuo Magara, Tadao Nishikawa, more

The Annals of Thoracic Surgery > 1995 > 59 > 6 > 1626-1627

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