目的对比经尿道直出光纤绿激光前列腺锐性剜除术(green light top-firing,sharp enucleation of the prostate,GTSEP)和绿激光选择性光汽化术(photoselective vaporisation of the prostate,PVP)治疗良性前列腺增生症(benign prostatic ...目的对比经尿道直出光纤绿激光前列腺锐性剜除术(green light top-firing,sharp enucleation of the prostate,GTSEP)和绿激光选择性光汽化术(photoselective vaporisation of the prostate,PVP)治疗良性前列腺增生症(benign prostatic hyperplasia,BPH)患者的有效性和安全性。方法选取2018年6月至2019年4月在本院诊治的154例BPH患者,按随机数字表法分为两组,每组77例,分别行GTSEP和PVP。评估两组患者术前一般情况,记录并比较术后第1个月和第6个月国际前列腺症状评分(IPSS)、生活质量评分(QoLs)、残余尿(PVR)、最大尿流率(Qmax)、前列腺体积(PV)、前列腺特异抗原(PSA)及并发症等。结果两组各有74例患者完成了随访。两组患者术前基本资料差异无统计学意义。术后1、6个月,两组患者下尿路症状均较术前明显改善,但IPSS、QoLs、PVR、Qmax、PSA差异无统计学意义。GTSEP组手术时间明显短于PVP组(41.0±16.4 vs 50.1±18.1 min,P=0.001),术后6个月GTSEP组前列腺体积小于PVP组(22.4±2.4 vs 23.3±1.9 mL,P=0.011)。两组术中和术后近期并发症差异无统计学意义。结论GTSEP与PVP治疗BPH均能获得较好的效果,GTSEP能更大程度去除增生的腺体组织,手术效率优于PVP。展开更多
To extract the valuable elements from the steel slag, a novel approach has been proposed by modification treatment to provide the stronger driving forces and accelerate the reduction. Three types of dephosphorization ...To extract the valuable elements from the steel slag, a novel approach has been proposed by modification treatment to provide the stronger driving forces and accelerate the reduction. Three types of dephosphorization steel slags were reduced using carbon-saturated iron bath to extract iron and phosphorus simultaneously. During the process of reduction, slag composition, temperature, and original P2O5 content were investigated respectively. Slag modification treatment, adding either silica or alumina to vary the slag composition, was proven to accelerate the reduction of dephosphorization slag. The equilibrium time can be shortened from 60 to 30 min. Slag modification also allowed the reduction reaction to occur at lower temperature. After slag modification, the original P2O5 content in slag presents a slight difference on reduction process. Almost half of the reduced phosphorus was vaporized within 5 and 20 min. As more and more FeO was reduced, CO gas generation decreased, and evaporation amount of phosphorus therefore decreases.展开更多
文摘目的对比经尿道直出光纤绿激光前列腺锐性剜除术(green light top-firing,sharp enucleation of the prostate,GTSEP)和绿激光选择性光汽化术(photoselective vaporisation of the prostate,PVP)治疗良性前列腺增生症(benign prostatic hyperplasia,BPH)患者的有效性和安全性。方法选取2018年6月至2019年4月在本院诊治的154例BPH患者,按随机数字表法分为两组,每组77例,分别行GTSEP和PVP。评估两组患者术前一般情况,记录并比较术后第1个月和第6个月国际前列腺症状评分(IPSS)、生活质量评分(QoLs)、残余尿(PVR)、最大尿流率(Qmax)、前列腺体积(PV)、前列腺特异抗原(PSA)及并发症等。结果两组各有74例患者完成了随访。两组患者术前基本资料差异无统计学意义。术后1、6个月,两组患者下尿路症状均较术前明显改善,但IPSS、QoLs、PVR、Qmax、PSA差异无统计学意义。GTSEP组手术时间明显短于PVP组(41.0±16.4 vs 50.1±18.1 min,P=0.001),术后6个月GTSEP组前列腺体积小于PVP组(22.4±2.4 vs 23.3±1.9 mL,P=0.011)。两组术中和术后近期并发症差异无统计学意义。结论GTSEP与PVP治疗BPH均能获得较好的效果,GTSEP能更大程度去除增生的腺体组织,手术效率优于PVP。
基金Item Sponsored by National Natural Science Foundation of China(50904017)Fundamental Research Funds for Central Universities of China(100402016)Postdoctoral Science Foundation of China(2011M500823)
文摘To extract the valuable elements from the steel slag, a novel approach has been proposed by modification treatment to provide the stronger driving forces and accelerate the reduction. Three types of dephosphorization steel slags were reduced using carbon-saturated iron bath to extract iron and phosphorus simultaneously. During the process of reduction, slag composition, temperature, and original P2O5 content were investigated respectively. Slag modification treatment, adding either silica or alumina to vary the slag composition, was proven to accelerate the reduction of dephosphorization slag. The equilibrium time can be shortened from 60 to 30 min. Slag modification also allowed the reduction reaction to occur at lower temperature. After slag modification, the original P2O5 content in slag presents a slight difference on reduction process. Almost half of the reduced phosphorus was vaporized within 5 and 20 min. As more and more FeO was reduced, CO gas generation decreased, and evaporation amount of phosphorus therefore decreases.
