输尿管镜钬激光碎石术对不同成分结石的疗效比较

目的:研究输尿管镜钬激光碎石术对不同成分结石的疗效。方法:回顾性分析2022年1月到2023年7月我院行输尿管镜钬激光碎石术患者175例,根据结石主要成分的不同,分为软石组58例和硬石组117例。比较两组手术有效率、手术操作时间、术后住院时间、需二次手术率以及手术前后疼痛评分(VAS)、术后1个月并发症发生率。结果:软石组均比硬石组手术有效率高[84.48%(49/58)vs.57.26%(67/117)],手术操作时间[(73.86±11.57)min vs.(96.65±16.89)min]、术后住院时间短[(4.34±1.71)d vs.(8.56±1.87)d],需二次手术率低[10.34%(6/58)vs.35.04%(41/117)],术后1个月并发症发生率低[6.90%(4/58)vs.17.95%(21/117)],差异均具有统计学意义(P<0.05)。结论:质地较软结石患者输尿管镜钬激光碎石术的手术效果优良,手术时间短,疼痛更轻,术后恢复快,同时术后并发症少。

Novel Fluorene-based Conjugated Copolymer Containing Cyclobutenedione Unit for Light Emitting Diodes

A novel fluorene-based conjugated copolymer containing cyclobutenedione unit was synthesized by Suzuki reaction. Its structure and properties were characterized by FTIR, 1HNMR, elemental analysis, PL spectroscopy, DSC, TGA and cyclic voltammetry. The resulting polymer shows strong yellow PL emission (561 nm) and good solubility in polar aprotic solvents, i.e. THF, DMF, DMAC, DMSO, etc. DSC and TGA studies reveal that the novel polymer possesses excellent thermal stability with high glass transition temperature of 127℃ and onset decomposition temperature of 411℃. Cyclic voltammetry measurement demonstrated that the polymer has both hole and electron-transporting property.