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RISS 인기검색어
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- 저자 : Fumitaka Shimizu (검색결과 2 건)
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Satoru Muto,Kousuke Kitamura,Takeshi Ieda,Fumitaka Shimizu,Masayoshi Nagata,Shuji Isotani,Hisamitsu Ide,Raizo Yamaguchi,Shigeo Horie 대한비뇨의학회 2017 Investigative and Clinical Urology Vol.58 No.3
Purpose: Robot-assisted radical cystectomy (RARC) was originally intended to replace open radical cystectomy (ORC) as a minimally invasive surgery for patients with invasive bladder cancer. The purpose of this study was to evaluate the advantages of robotic surgery, comparing perioperative and oncologic outcomes between RARC and ORC. Materials and Methods: Between June 2012 and August 2016, 49 bladder cancer patients were given a radical cystectomy, 21 robotically and 28 by open procedure. We compared the clinical variables between the RARC and ORC groups. Results: In the RARC group, the median estimated blood loss (EBL) during cystectomy, total EBL, operative time during cystectomy, and total operative time were 0 mL, 457.5 mL, 199 minutes, and 561 minutes, respectively. EBL during cystectomy (p<0.001), total EBL (p<0.001), and operative time during cystectomy (p=0.003) in the RARC group were significantly lower compared with the ORC group. Time to resumption of a regular diet (p<0.001) and length of stay (p=0.017) were also significantly shorter compared with the ORC group. However, total operative time in the RARC group (median, 561 minutes) was significantly longer compared with the ORC group (median, 492.5 minutes; p=0.015). Conclusions: This Japanese study presented evidence that RARC yields benefits in terms of BL and time to regular diet, while consuming greater total operative time. RARC may be a minimally invasive surgical alternative to ORC with less EBL and shorter length of stay.
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Michio Tanaka,Eisuke Yokota,Yoichiro Toyonaga2,Fumitaka Shimizu,Yoshiyuki Ishii,Makoto Fujime,Shigeo Horie 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.7
Purpose: To identify the parameters on noncontrast computed tomography (NCCT)that best predict the success of shock wave lithotripsy (SWL). Materials and Methods: We reviewed the records of 75 patients who underwent SWL for urinary calculi measuring 5 to 20 mm. Using NCCT images, we estimated the largest stone cross-sectional area and contoured the inner edge of the stone. Clinical outcome was classified as successful (stone-free or <4 mm in diameter) or failed (stone fragments, ≥4 mm). The impact of preoperative parameters was evaluated by univariate and multivariate analysis. Results: The overall success rate was 73.3%. Average stone attenuation value, stone length, and stone cross-sectional area in the success and failure groups were 627.4±166.5 HU (Hounsfield unit) vs. 788.1±233.9 HU (p=0.002), 11.7±3.8 mm vs. 14.2±3.6 mm (p=0.015), and 0.31±0.17 cm2 vs. 0.57±0.41 cm2 (p<0.001), respectively. In the multivariate analysis, stone attenuation value was the only independent predictor of SWL success (p=0.023), although stone cross-sectional area had a tendency to be associated with SWL success (p=0.053). Patients were then classified into four groups by using cutoff values of 780 HU for stone attenuation value and 0.4 cm2 for cross-sectional area. By use of these cutoff values, the group with a low stone attenuation value and a low cross-sectional area was more than 11.6 times as likely to have a successful result on SWL as were all other groups (odds ratio, 11.6; 95% confidence interval, 3.9 to 54.7; p<0.001). Conclusions: Stone attenuation value and stone cross-sectional area are good predictors of extracorporeal SWL outcome.
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