期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Three-dimensional visualization technology for guiding one-step percutaneous transhepatic cholangioscopic lithotripsy for the treatment of complex hepatolithiasis
1
作者 Yong-Qing Ye Ya-Wen Cao +6 位作者 Rong-Qi li en-ze li Lei Yan Zhao-Wei Ding Jin-Ming Fan Ping Wang Yi-Xiang Wu 《World Journal of Gastroenterology》 SCIE CAS 2024年第28期3393-3402,共10页
BACKGROUND Biliary stone disease is a highly prevalent condition and a leading cause of hospitalization worldwide.Hepatolithiasis with associated strictures has high residual and recurrence rates after traditional mul... BACKGROUND Biliary stone disease is a highly prevalent condition and a leading cause of hospitalization worldwide.Hepatolithiasis with associated strictures has high residual and recurrence rates after traditional multisession percutaneous transhepatic cholangioscopic lithotripsy(PTCSL).AIM To study one-step PTCSL using the percutaneous transhepatic one-step biliary fistulation(PTOBF)technique guided by three-dimensional(3D)visualization.METHODS This was a retrospective,single-center study analyzing,140 patients who,between October 2016 and October 2023,underwent one-step PTCSL for hepatolithiasis.The patients were divided into two groups:The 3D-PTOBF group and the PTOBF group.Stone clearance on choledochoscopy,complications,and long-term clearance and recurrence rates were assessed.RESULTS Age,total bilirubin,direct bilirubin,Child-Pugh class,and stone location were similar between the 2 groups,but there was a significant difference in bile duct strictures,with biliary strictures more common in the 3D-PTOBF group(P=0.001).The median follow-up time was 55.0(55.0,512.0)days.The immediate stone clearance ratio(88.6%vs 27.1%,P=0.000)and stricture resolution ratio(97.1%vs 78.6%,P=0.001)in the 3D-PTOBF group were significantly greater than those in the PTOBF group.Postoperative complication(8.6%vs 41.4%,P=0.000)and stone recurrence rates(7.1%vs 38.6%,P=0.000)were significantly lower in the 3D-PTOBF group.CONCLUSION Three-dimensional visualization helps make one-step PTCSL a safe,effective,and promising treatment for patients with complicated primary hepatolithiasis.The perioperative and long-term outcomes are satisfactory for patients with complicated primary hepatolithiasis.This minimally invasive method has the potential to be used as a substitute for hepatobiliary surgery. 展开更多
关键词 HEPATOLITHIASIS One-step percutaneous transhepatic cholangioscopic lithotripsy Biliary disease Three-dimensional visualization Clinical efficacy
下载PDF
“点击化学”离子化聚砜对磺化聚醚醚酮/聚砜共混膜性能的影响研究
2
作者 陈琛 党杰 +4 位作者 李小雨 许召赞 李恩泽 成怀刚 程芳琴 《高分子学报》 SCIE CAS CSCD 北大核心 2023年第12期1899-1910,共12页
为制备氢离子/二价金属离子渗透选择性优异的阳离子交换膜,探究功能基团(季铵基团、羧基)含量对膜性能的影响规律,采用“点击化学”反应,在聚砜(PSF)侧链接枝季铵基团和羧基获得离子化PSF,将其与磺化聚醚醚酮(SPEEK)共混制备阳离子交换... 为制备氢离子/二价金属离子渗透选择性优异的阳离子交换膜,探究功能基团(季铵基团、羧基)含量对膜性能的影响规律,采用“点击化学”反应,在聚砜(PSF)侧链接枝季铵基团和羧基获得离子化PSF,将其与磺化聚醚醚酮(SPEEK)共混制备阳离子交换膜,分别通过离子化PSF添加量、功能化度和侧链阴阳离子比例调控共混膜中季铵基团含量,探究其对膜性能的影响规律.膜对氢离子和亚铁离子的渗透选择性随着离子化PSF含量和功能化度的增加均呈现先升高后降低的趋势,当离子化PSF的季铵与羧基比例为1:1时,共混膜的渗透选择性最佳.季铵基团与磺酸基形成离子对有利于抑制膜溶胀,通过Donnan排斥和尺寸筛分效应提高阳离子交换膜的渗透选择性;但当季铵基团的含量超过一定值,离子簇的形成导致其在膜内分布不均,膜的渗透选择性有所降低.羧基则通过形成氢键减小膜的氢离子渗透性降低幅度. 展开更多
关键词 阳离子交换膜 渗透选择性 点击化学 离子簇
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部