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| 1 | Multicenter study of endoscopic preoperative biliary drainage for malignant distal biliary obstruction显示文摘AIM: To determine the optimal method of endoscopic preoperative biliary drainage for malignant distal biliary obstruction.METHODS: Multicenter retrospective study was conducted in patients who underwent plastic stent(PS) or nasobiliary catheter(NBC) placement for resectable malignant distal biliary obstruction followed by surgery between January 2010 and March 2012. Procedurerelated adverse events, stent/catheter dysfunction(occlusion or migration of PS/NBC, developmentof cholangitis, or other conditions that required repeat endoscopic biliary intervention), and jaundice resolution(bilirubin level < 3.0 mg/d L) were evaluated. Cumulative incidence of jaundice resolution and dysfunction of PS/NBC were estimated using competing risk analysis. Patient characteristics and preoperative biliary drainage were also evaluated for association with the time to jaundice resolution and PS/NBC dysfunction using competing risk regression analysis.RESULTS: In total, 419 patients were included in the study(PS, 253 and NBC, 166). Primary cancers included pancreatic cancer in 194 patients(46%), bile duct cancer in 172(41%), gallbladder cancer in three(1%), and ampullary cancer in 50(12%). The median serum total bilirubin was 7.8 mg/d L and 324 patients(77%) had ≥ 3.0 mg/d L. During the median time to surgery of 29 d [interquartile range(IQR), 30-39 d]. PS/NBC dysfunction rate was 35% for PS and 18% for NBC [Subdistribution hazard ratio(SHR) = 4.76; 95%CI: 2.44-10.0, P < 0.001]; the pig-tailed tip was a risk factor for PS dysfunction. Jaundice resolution was achieved in 85% of patients and did not depend on the drainage method(PS or NBC).CONCLUSION: PS has insufficient patency for preoperative biliary drainage. Given the drawbacks of external drainage via NBC, an alternative method of internal drainage should be explored. | Naoki Sasahira Tsuyoshi Hamada Osamu Togawa Ryuichi Yamamoto Tomohisa Iwai Kiichi Tamada Yoshiaki Kawaguchi Kenji Shimura Takero Koike Yu Yoshida Kazuya Sugimori Shomei Ryozawa Toshiharu Kakimoto Ko Nishikawa Katsuya Kitamura Tsunao Imamura Masafumi Mizuide Nobuo Toda Iruru Maetani Yuji Sakai Takao Itoi Masatsugu Nagahama Yousuke Nakai Hiroyuki Isayama | 2016 | World Journal of Gastroenterology2016，22，14： | 18 |
| 2 | Impact of telecommuting on spatial and temporal patterns of household travel显示文摘 | Ram M. Pendyala Konstadinos G. Goulias Ryuichi Kitamura | 1991 | Transportation1991，，4： | 2 |
| 3 | Micro-simulation of daily activity-travel patterns for travel demand forecasting 显示文摘 | Ryuichi Kitamura Cynthia Chen | 2000 | Transportation2000，27，： | 1 |
| 4 | An activity-based microsimulation analysis of transportation control measures 显示文摘 | Ram M Pendyala Ryuichi Kitamura Eric Chen | 1997 | Transportation Policy1997，4，： | 1 |
| 5 | Activity rescheduling: reasoned or habitual? 显示文摘 | Chen Cynthia Garling Tommy Kitamura Ryuichi | 2004 | Transportation Research Part F2004，7，6： | 1 |
| 6 | The sequenced activity mobility simulator (SAMS): an integrated approach to modeling transportation, land use and air quality显示文摘 | Ryuichi Kitamura Eric I. Pas Clarisse V. Lula T. Keith Lawton Paul E. Benson | 1996 | Transportation1996，，3： | 1 |
| 7 | Regularity and irreversibility of weekly travel behavior显示文摘 | Ryuichi Kitamura Toon Hoorn | 1987 | Transportation1987，，3： | 1 |
| 8 | What does a one-month free bus ticket do to habitual drivers? An experimental analysis of habit and attitude change显示文摘 | Satoshi Fujii Ryuichi Kitamura | 2003 | Transportation2003，30，1： | 1 |
| 9 | A Mi- cro-Analysis of Land Use and Travel in Five Neighborhoods in the San Francisco Bay Area 显示文摘 | Kitamura Ryuichi Mokhtarian Patricia L Laidet Laura | 1997 | Transportation1997，24，2： | 1 |
| 10 | A Conceptual Analysis of the Impact of Travel Demand Management on Private Car Use 显示文摘 | Tommy Garling Daniel Eek Peter Loukopulos Satoshi Fujii Olof Johansson-Stenman Ryuichi Kitamura Ram Pendyala Bertil Vilhelmson | 2002 | Transport policy2002，，9： | 1 |
| 11 | Creep Cavity Growth under Interaction between Lattice Diffusion and Gran-Boundary Diffusion显示文摘 | TADAHIRO SHIBUTANI TAKAYUKI KITAMURA and RYUICHI OHTANI | 1998 | Metallurgical and Materials Transactions A Volume1998，29，10： | 1 |
| 12 | Using Stated Preference Data for Studying the Effect of Advanced Traffic Information on Drivers' Route Choice 显示文摘 | Mohamed A Abdel-Aty Ryuichi Kitamura Paul P Jovanis | 1997 | Transportation Research Part C1997，5，1： | 1 |
| 13 | What does a one-month free bus ticket do to habitual drivers? An experimental analysis of habit and attitude change 显示文摘 | Satoshi Fujii Ryuichi Kitamura | 2003 | Transportation2003，30，： | 1 |
| 14 | Drivers’ Mental Representation of Travel Time and Departure Time Choice in Uncertain Traffic Network Conditions显示文摘 | Satoshi Fujii Ryuichi Kitamura | 2004 | Networks and Spatial Economics2004，，3： | 1 |
| 15 | Activity Rescheduling: Reasoned or Habitual?显示文摘 | Cynthia Chen Tonmy Garling Ryuichi Kitamura | 2004 | TransDorration Research F2004，，6： | 1 |
| 16 | Activity rescheduling: reasoned or habitual 显示文摘 | Cynthia Chen Tommy Garling Ryuichi Kitamura | 2004 | Transportation Research Part F2004，7，： | 1 |
| 17 | A causal analysis of car ownership and transit use显示文摘 | Ryuichi Kitamura | 1989 | Transportation1989，，2： | 1 |
| 18 | A dynamic model system of household car ownership,trip generation,and modal split:model development and simulation experiment显示文摘 | Ryuichi Kitamura | 2009 | Transportation2009，36，6： | 1 |
| 19 | Drivers' mental repre- sentation of travel time and departure time choice in un- certain traffic network conditions显示文摘 | Satoshi Fuji Ryuichi Kitamura | 2004 | Networks and Spa- tial Economics2004，4，3： | 1 |
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