介入性输卵管再通术及碘化油的应用价值

目的探讨和论证介入性输卵管再通术后治疗输卵管阻塞的临床效果及40%碘化油的应用价值.方法在1996～1998年的病例中随机抽样30人共60条输卵管为对照组,以1999～2000年病例中随机抽样30例60条输卵管为观察组,进行手术效果分析.结果对照组、观察组的再通率、术后受孕率、术后粘连复发率分别为83.3%、88.3%;23.3%、26.6%;34.3%、11.5%.结论输卵管介入再通是治疗输卵管性不孕的一项有效的治疗方法.40%碘化油术中的应用可以明显降低输卵管粘连的复发率.     

用自制器械行选择性输卵管造影和再通术

报告用自制器械行子宫输卵管选择性造影及再通术45例,插管成功率95.5%。近端输卵管阻塞再通率80%。随访结果:15例患者正常受孕,受孕率33.3%,其中继发不孕症受孕率50%,原发不孕症受孕率17.4%。近端阻塞再通术后受孕率54.5%,远端积水或阻塞患者受孕率15%。显示选择性输卵管造影及再通术是治疗女性不孕症的有效方法;本手术最佳适应证为继发不孕、近端输卵管阻塞患者;自制器械价廉、安全。     

通液诊疗仪碘水加压法子宫输卵管造影的临床应用

【摘要】 目的 探讨通液诊疗仪碘水加压法子宫输卵管造影（HSG）的临床价值。方法 对103例不孕患者行HSG检查,对比剂为48％碘海醇,采用通液诊疗仪,逐渐增加子宫腔内压力,对阻塞输卵管行压力钝性疏通,疏通后行输卵管通液术。结果 子宫输卵管正常17例,子宫异常6例,80例共151条输卵管阻塞,128条获管腔再通,再通率达84.8%,其中左侧输卵管开通的平均压力为24 kPa,对比剂进入盆腔的平均压力为25.3 kPa;右侧输卵管开通的平均压力为28.4 kPa,对比剂进入盆腔的平均压力为28.6 kPa;压力达50 kPa以上仍未开通的23条。开通后手推通液阻力明显下降45例、轻度下降30例、不下降5例。术中出现静脉逆流3例,局部疼痛56例,少量阴道流血50例,无盆腔感染或输卵管穿孔发生。结论通液诊疗仪碘水加压法HSG能清楚显示子宫及输卵管通畅情况,对阻塞输卵管能有效地进行压力疏通,同时具有压力量化、简单易行、安全可控等特点,值得推广应用。
     

介入再通术联合药物、臭氧灌注治疗输卵管性不孕症

摘要】 目的 探讨输卵管介入再通术联合药物、臭氧灌注治疗输卵管性不孕症的应用价值。方法 回顾整理经子宫输卵管造影诊断的369例共665条输卵管近段阻塞或通而不畅患者资料,将导管置于患侧子宫角部输卵管开口,使用导丝成功再通后跟进导管至输卵管近端,先后经导管注入复方疏通液（庆大霉素8万u、地塞米松5 mg、糜蛋白酶4 000 u和甲硝唑200 mg溶入生理盐水10 ml）及臭氧;造影观察术后开通情况,统计开通率,随访8个月内受孕情况并作数据处理。结果 665条近段阻塞或通而不畅输卵管综合治疗后559条（84.1%）基本通畅,完全阻塞疏通率为81.1%（43/53）。随访8个月:256例患者得以宫内妊娠,其中术后4个月受孕172例,5 ～ 6个月受孕39例,7 ～ 8个月受孕13例;随访者中输卵管妊娠12例。结论 输卵管介入再通术联合药物、臭氧灌注治疗输卵管近段阻塞或通而不畅性不孕症疗效确切,值得临床推广应用。

     

输卵管性不孕症的介入治疗

目的探讨选择性输卵管造影（SSG）及再通术（FTR）的临床应用。方法对２１５例不孕症患者行子宫输卵管造影（HSG）、SSG和FTR,术后辅以抗感染、通液和物理治疗。结果插管成功率９２．８％,疏通成功率９０．２％,无严重并发症。术后随访６年,宫内受孕９８例,达５１．３％。结论介入治疗输卵管性不孕症操作简便、诊断准确、并发症少,是十分有效的治疗方法。     

臭氧对经产妇输卵管梗阻再通术的疗效观察

【摘要】 目的 探讨输卵管梗阻再通术中臭氧的应用效果。方法 经临床和实验室证实的输卵管梗阻患者116例，随机数字表法将患者分为研究组与对照组，每组各58例。所有患者住院期间均接受介入性输卵管再通术治疗。研究组应用臭氧水行输卵管灌注，而对照组则采用常规消炎及防粘连药物溶液。随访6个月，观察统计2组患者妊娠率及输卵管再闭塞率，同时于术后2周对2组患者不适症状进行评价并比较。结果 研究组输卵管再通成功率为93.1%（54/58），妊娠率为79.3%（46/58），再发闭塞率为5.2%（3/58）。而对照组输卵管再通成功率为91.4%（53/58），妊娠率为60.3%（35/58），再发闭塞率为17.2%（10/58）。分析显示，2组患者再通成功率差异无统计学意义（P>0.05），但研究组妊娠率及再发闭塞率显著高于对照组，差异具有统计学意义（P<0.05）。研究组不适症状评分与对照组差异无统计学意义（P>0.05）。结论 在输卵管再通术中采用臭氧灌注可有效提高术后妊娠率，降低再发闭塞。

     

经改良导管注药治疗输卵管阻塞的临床应用

目的探讨经改良导管注药治疗输卵管阻塞不孕的临床价值.方法86例输卵管梗阻患者,经改良导管注药治疗输卵管阻塞复通术.结果86例共169条输卵管阻塞,119条1次复通,占70.4%,33条 2次治疗后复通,占19.5%,总复通率为89.9%.随访86例,有39例1次治疗后妊娠,18例2次治疗后妊娠,总妊娠率为66.3%.结论经改良导管注药治疗输卵管阻塞复通和妊娠是安全而有效方法.     

优质护理在输卵管阻塞介入再通手术中的应用

【摘要】 目的 探讨输卵管阻塞介入再通手术患者实施优质护理的临床效果。方法 随机选取输卵管阻塞需在DSA下介入治疗的患者240例,分为对照组110例,观察组130例。对照组实施常规护理,观察组实施优质护理。比较2组患者的治疗护理效果。结果 观察组患者及家属的满意度、患者的配合程度及输卵管通畅率明显高于对照组;手术中意外情况的发生率明显低于对照组,对照组出现6例手术意外,而观察组患者未出现手术意外,2组比较差异显著。结论 介入室护士对输卵管介入再通的患者实施优质护理后,手术中意外情况的发生明显减少;输卵管再通成功率明显提高;护患关系得到了较大提升,护患信任度提高;增强了患者治疗疾病的信心,有利于患者更好的配合手术;使输卵管再通手术取得更好的效果,值得推广。

     

子宫腔碘水加压法输卵管再通术的临床研究

目的寻求一种简便快速、安全有效、经济实用,将造影诊断与输卵管再通治疗结合起来的新方法.方法应用双腔球囊胶管插入子宫腔,充盈球囊堵塞子宫颈内口,用助推器注入碘海醇充盈子宫腔及输卵管,电视动态观察实时点片,完成造影诊断.当发现输卵管阻塞时,用手助推加压,逐渐增高宫腔内压力,使阻塞输卵管被造影剂压力钝性开通.结果本组2 698例,插管成功2 685例.其中,原发不孕806例,继发不孕1 868例,其他24例,输卵管阻塞3 082支(右1 561支、左1 521支),占实有输卵管的59%,加压开通率为77.8%(     

选择性输卵管造影及再通术在不孕症中的应用价值

目的评价选择性输卵管造影（ＳＳＧ）及再通术（ＦＴＲ）在输卵管不孕症中的疗效。方法经子宫输卵管造影证实４５９例患者共８９５条输卵管近端阻塞或通畅度不佳,将导管置于输卵管口,使用导丝疏通后造影,对比分析其手术前后输卵管通畅程度并随访１８个月内妊娠率。结果８９５条近端阻塞或不通畅输卵管疏通后５７２条（６３．９％）基本通畅。完全性阻塞输卵管ＳＳＧ及ＦＴＲ术后疏通率为８０．３％（５３／６６）;不完全性阻塞患者疏通率为９６．７％（８０２／８２９）。随访１８个月,２１２例患者中妊娠９３例（４３．９％）,异位妊娠２例（２．１％）。中位妊娠期为８．２个月。双侧输卵管基本通畅者妊娠率为５１．３％（５８／１１３）,双侧输卵管不完全通畅者妊娠率为３５．４％（３５／９９）。结论ＳＳＧ及ＦＴＲ安全有效,是治疗因输卵管近端阻塞或不通畅导致不孕的有效方法。     

症状性大脑中动脉粥样硬化性狭窄支架植入术后血流动力学研究

【摘要】 目的 探讨症状性大脑中动脉粥样硬化性狭窄患者接受颅内支架植入术前后脑血流动力学变化。方法 回顾成功实施颅内支架植入术的39例症状性大脑中动脉粥样硬化性狭窄患者基线资料,对采用经颅多普勒超声检测术前、术后1周、术后3个月大脑中动脉狭窄段收缩期峰值流速（PSV）和脉动指数（PI）进行分析,比较手术前后病变血管血流动力学变化。结果 39例患者中1例术后狭窄改善不明显,38例动脉平均管径狭窄率由治疗前（80.3±8.5）%改善为术后即刻（16.3±9.2）%（P=0.011）。术后1周、术后3个月大脑中动脉狭窄段PSV与术前比较有明显降低（P=0.023）,PI也较术前明显降低（P=0.028）。术后3个月时2例患者平均PSV回复升高31%～39%;术后3个月与术后1周比较,平均PSV略有升高（P=0.129）,PI稍有增高（P=0.115）,但差异无统计学意义。结论 症状性大脑中动脉粥样硬化性狭窄患者接受颅内支架植入术后短期内脑血流得到有效增加,长期血流改善程度有待观察。

     

Thermovoltaic effect of <Emphasis Type="Italic">p</Emphasis>Si-<Emphasis Type="Italic">n</Emphasis>(Si<Subscript>2</Subscript>)<Subscript>1−x</Subscript>(ZnS)<Subscript>x</Subscript> structures

The pSi-n(Si₂)_1−x (ZnS) _x (0 ≤ x ≤ 0.92) structure, on which thermovoltaic effect is observed, has been obtained by means of liquid-phase epitaxy from tin solution-melt on plates of p-type technical silicon. This effect is explained by grain boundary defects and influence of ZnS impurities in a thin layer adjacent to the p-n-junction.     

The fabrication and investigation of <Emphasis Type="Italic">n</Emphasis>/CdS-<Emphasis Type="Italic">p</Emphasis>/CdTe-<Emphasis Type="Italic">n</Emphasis>/Si structures

Attempts to obtain heterojunctions between A²B⁶ (cadmium telluride and cadmium sulfide) compounds and silicon were made. The distributions of chemical components and some photoelectric properties of the surfaces of the produced layers were investigated.     

Antireflection coatings for solar elements based on Al<Subscript>2</Subscript>O<Subscript>3</Subscript> and SiO<Subscript>2</Subscript> oxides

An alloy of a mixture of Al₂O₃ and SiO₂ oxides has been obtained under radiant heating. It is established that films of the Al₂O₃ and SiO₂ alloy, deposited on the surface of glass and silicon plates, have high mechanical strength and adhesion, are transparent in the SE sensitivity region, and can be used as antireflection coatings.     

Electrochemical oxidation behavior of Mg–Li–Al–Ce–Zn and Mg–Li–Al–Ce–Zn–Mn in sodium chloride solution

Mg–Li–Al–Ce–Zn and Mg–Li–Al–Ce–Zn–Mn alloys were prepared using a vacuum induction melting method. Their electrochemical oxidation behavior in 0.7 M NaCl solution was investigated by means of potentiodynamic polarization, potentiostatic oxidation, electrochemical impedance technique and scanning electron microscopy examination. Their utilization efficiencies and performances as anode of metal–hydrogen peroxide semi-fuel cell were determined. The Mg–Li–Al–Ce–Zn–Mn exhibited higher discharge activity and utilization efficiency than Mg–Li–Al–Ce–Zn, and gave improved fuel cell performance. The utilization efficiency of Mg–Li–Al–Ce–Zn–Mn is comparable with that of the state-of-the-art magnesium alloy anode AP65. The magnesium–hydrogen peroxide semi-fuel cell with Mg–Li–Al–Ce–Zn–Mn anode presented a maximum power density of 91 mW cm⁻² at room temperature. Scanning electron microscopy and electrochemical impedance studies indicated that the alloying element Mn prevented the formation of dense oxide film on the alloy surface and facilitated peeling off of the oxidation products.     

How to make the production of methanol/DME &#8220;GREENER&#8221;&#8212;Integration of wind power with modern coal chemical industry&#8212;

The urgency and necessity of alternative fuels give an impetus to the development of modern coal chemical industry. Coal-based methanol/DME is the key element of this industry. Wind power, whose installed capacity increased at a rate of more than 100% in recent years, has the most developed technologies in renewable energy. However, there still exist many unsolved problems in wind power for on-grid utilization. A new integrated system which combines coal-based methanol/DME production with wind power is proposed in this paper. In this system, wind power is used to electrolyze water to produce H₂ and O₂. The O₂ is fed to the gasifier as gasification agent. The H₂ is mixed with the CO-rich gas to adjust the H₂/CO to an appropriate ratio for methanol synthesis. In comparison with conventional coal-based methanol/DME system, the proposed system omits the expensive and energy-consuming ASU and greatly reduces the water gas shift process, which brings both advantages in the utilization of all raw materials and significant mitigation of CO₂ emission. This system will be attractive in the regions of China which have abundant wind and coal resources.     

A new weighted‐sum‐of‐gray‐gases model for oxy‐combustion scenarios

A new weighted‐sum‐of‐gray gases (WSGG) model that is based on the statistical narrow band model (SNB) RADCAL is proposed for use in computational fluid dynamic (CFD) simulations of air and oxy‐combustion. When employed in conjunction with the discrete ordinates (DO) method, the model predictions compare well against line‐by‐line benchmark data that have been made available recently that are based on the latest spectroscopic databases. Furthermore, the model compares well against the EM2C SNB model calculations that have served as benchmark data in three‐dimensional geometries. Radiative transfer calculations in these prototypical problems therefore confirm recent experimental observations that SNB RADCAL and EM2C SNB serve as good model databases to develop approximate radiative property models. To achieve an optimum balance of speed and accuracy in computationally intensive CFD simulations, non‐gray formulations of the WSGG model are also employed with the P1 model and solutions are compared against those generated by the DO model. While the P1 model gave favorable comparisons when cold, black walls were present, the errors in the surface incident radiative flux predictions increased in the presence of hot, reflecting walls. Finally, in fully coupled simulations of natural gas combustion under air‐firing and oxy‐firing modes, the predicted incident radiative flux profiles were distinctly different between the gray and non‐gray calculations at regions of high temperature gradients, while the centerline temperature predictions were comparatively unaffected. The effects of turbulence radiation interactions were also accounted for through the temperature self‐correlation term. However, the magnitudes of the temperature fluctuations were small and localized within this furnace and did not significantly alter our predictions. Copyright © 2012 John Wiley & Sons, Ltd.