Publications (4)3.99 Total impact

  • T Onohara · K Komori · M Kume · M Ishida · S Ohta · K Takeuchi · T Matsumoto · K Sugimachi
    [Show abstract] [Hide abstract]
    ABSTRACT: Controversy still remains regarding the long-term results and indications for axillofemoral bypass (AxFB). A comparison of axillobifemoral bypass (AxBFB) and aortobifemoral bypass (ABFB) was thus conducted to determine whether AxFB is an acceptable alternative vascular procedure to anatomic bypass for high-risk patients. Sixty-three patients who underwent a total of 25 AxBFBs and 38 ABFBs for aortoiliac occlusive disease were reviewed retrospectively, and both univariate and multivarate analyses were perfomed. The overall survival was 82.8% at five years. A univariate analysis revealed significantly lower survival rates for patients with limb-threatening ischemia, coronary disease, and cerebrovascular disease. A multivariate analysis disclosed no significant factors influencing survival rates. The overall primary patency was 79.8% at five years. The primary patency rates for AxBFB (67.7% at five years) were significantly lower than for ABFB (88.5% at five years) based on a univariate analysis (p=0.0045). In addition, the secondary patency rates for AxBFB (80.3% at five years) were significantly lower than for ABFB (96.5% at five years, p=0.0025). A multivariate analysis disclosed significantly lower primary patency rates for grafts with a higher angiographic outflow score and simultaneous infrainguinal reconstructive procedures, but the differences between AxBFB and ABFB were not significant. The survival and primary patency for the AxBFB group were both inferior to the ABFB group, however a multivarate analysis disclosed no significant differences between the two groups. Poor femoral run-off and the presence of synchronous infrainguinal reconstructive procedures significantly affected graft patency, and these factors modulated the patency of AxBFB. AxFB for aortoiliac occlusive disease is therefore considered to be an acceptable procedure in appropriately selected patients.
    The Journal of cardiovascular surgery 01/2001; 41(6):905-10. · 1.37 Impact Factor
  • K Komori · E Mori · T Yamaoka · S Ohta · K Takeuchi · T Matsumoto · M Kume · K Sugimachi
    [Show abstract] [Hide abstract]
    ABSTRACT: Superior mesenteric artery aneurysms are rare, comprising only 8% of all visceral artery aneurysms. Aneurysms at the site are very susceptible to rupture, irrespective of size and may be difficult to manage even in the case of elective surgery. In the absence of serious complicating factors, the treatment of choice is excision of the aneurysm and reconstruction of the artery, if necessary, to maintain patency. We report the successful resection of an aneurysm and the subsequent reconstruction of the superior mesenteric artery which was directly anastomosed to the aorta after resection of an aneurysm.
    The Journal of cardiovascular surgery 07/2000; 41(3):475-8. · 1.37 Impact Factor
  • K Takeuchi · K Komori · S Ohta · M Shimada · Y Yonemitsu · K Sugimachi
    [Show abstract] [Hide abstract]
    ABSTRACT: We report two cases of simultaneous surgical treatment in patients with a concomitant abdominal aortic aneurysm (AAA) and hepatocellular carcinoma (HCC). The first patient underwent abdominal echography and was observed to have an abnormal hepatic mass. A consecutive computed tomographic (CT) scan showed an AAA, measuring 8 cm in size. The hepatic mass, which reached 5 cm in size, existed in the S5 and was strongly suspected to be HCC. The second patient was observed to have AAA by CT scan three years ago and also shown to have a hepatic mass, which reached 3 cm in size, in the S8. Both patients underwent a simultaneous resection. At first, a resection and reconstruction of the aneurysm was performed, followed by an extended right lobectomy and anterior segmentectomy of the liver. The postoperative course was uneventful and they were discharged on the 29th and 22nd postoperative day. To our knowledge, this is the first report of patients who underwent a successful simultaneous resection of an AAA and HCC.
    International surgery 01/2000; 85(2):152-7. · 0.25 Impact Factor
  • K Komori · M Ishida · T Matsumoto · M Kume · S Ohta · K Takeuchi · T Onohara · K Sugimachi
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to investigate the cytokine patterns of patients with abdominal aortic aneurysms and the effects of preoperative steroid administration on surgical stress. From January 1996 to August 1996, 20 consecutive patients underwent an elective reconstruction of infrarenal abdominal aortic aneurysms. The patients were randomly divided into two groups consisting of a control group (n=10) and a steroid group (n=10), in whom 1 g of methylprednisolone was intravenously administered two hours before the operation. Interleukin-6 was serially measured and the perioperative parameters including C-reactive protein were compared between both the control and the steroid groups. The interleukin-6 values in the steroid group immediately after declamping, as well as at one and three postoperative days were significantly lower than those in the control group. C-reactive protein values at one postoperative day in the steroid group were also significantly lower than those in the control group. In one patient with a ruptured abdominal aortic aneurysm, the interleukin-6 values were higher than those in the patients undergoing elective surgery throughout the study. These results thus suggest that preoperative steroid administration using methylprednisolone in patients with abdominal aortic aneurysms appears to reduce surgical stress by decreasing cytokine release.
    International angiology: a journal of the International Union of Angiology 10/1999; 18(3):193-7. · 1.01 Impact Factor