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51.
52.
参附注射液对肠缺血-再灌注大鼠肿瘤坏死因子α的影响 总被引:5,自引:0,他引:5
目的观察肿瘤坏死因子α(TNF-α)在大鼠肠缺血-再灌注损伤过程中的作用及参附注射液对TNF-α的影响,探讨参附注射液防治肠缺血-再灌注损伤机制。方法 SD大鼠随机分为肠缺血-再灌注组(IR组)、参附注射液预处理组(SF组)和假手术组(C组)。采用阻断肠系膜上动脉(SMA)的方法制造肠缺血-再灌注模型。分别测定各组动物血浆、肠组织TNF-α含量及血液动力学变化;光镜观察肠粘膜损伤情况。结果IR组再灌注后MAP下降,与C组和SF组比有显著性差异(P<0.01);SF组肠粘膜损伤程度减轻,与IR组比有显著性差异(P<0.01);SF组血浆及肠组织TNF-α水平降低,与IR组比有显著性差异(P<0.01)。结论参附注射液可明显防治大鼠肠缺血-再灌注导致的肠粘膜损伤,这种作用可能是通过抑制TNF-α的释放实现的。 相似文献
53.
目的:探讨消痔灵注射在直肠内脱垂治疗中的临床应用及改良方法.方法:对38例直肠内脱垂患者行消痔灵直肠黏膜高位柱状注射治疗的临床资料进行分析总结.结果:术后随访1~24个月,治愈28例(占73.7%),好转7例(占18.4%),总有效率达92.1%.结论:消痔灵直肠黏膜高位柱状注射治疗直肠内脱垂具有操作简单、疗效可靠、并发症少、费用低廉的优点. 相似文献
54.
醒脑静注射液治疗缺血性中风急性期随机对照试验的系统评价 总被引:1,自引:0,他引:1
目的 系统评价醒脑静注射液治疗缺血性中风急性期的疗效及安全性。方法 集醒脑静注射液治疗缺血性中风急性期随机对照试验文献,筛选合格研究,应用Jadad评分法进行质量评价,运用异质性检验、Meta-分析、漏斗图分析、敏感性分析等方法统计相关数据。结果 项研究符合纳入标准,Jadad评分所有研究得分均低于3分,属低质量文献。Meta-分析结果显示,总有效率比较的相对危险度(RR值)=1.04,99%的可信区间(CI值)为(0.88,1.23)。结论 前尚无充分证据证实醒脑静注射液治疗缺血性中风急性期的疗效及安全性。要进一步验证醒脑静注射液治疗缺血性中风急性期的疗效及安全性,尚需进行设计合理、执行严格、多中心大样本且随访时间足够的随机对照试验。 相似文献
55.
The Effect of 50 Hz External Electrical Interference on Implanted Cardiac Pacemakers 总被引:2,自引:0,他引:2
GERALD C. KAYE GHAZWAN S. BUTROUS ALI ALLEN STUART J. MELDRUM JOHN G. MALE † A. JOHN CAMM 《Pacing and clinical electrophysiology : PACE》1988,11(7):999-1008
The effects of injected 50 Hz alternating current on the function of cardiac pacemakers has been observed in 18 patients with implanted unipolar VVI units. Current, in the range 0-600 microA was applied via electrodes attached to the patients' upper body and feet and fed from a specially designed current injection unit at the bedside. Most implanted pacemakers reverted to interference mode in the current range 29-250 microA. At current levels just below the reversion current all units developed irregular and inappropriate pacing. This current level was pacemaker dependent and varied in the range 27-246 microA. The total reversion current depended on the location of the injecting electrodes and on the patients' posture. The sensitivity of the units to injected interference was increased by deep inspiration. Temporary pacing catheters fitted to an additional ten patients were used to monitor the interference voltage which would be sensed by an implanted unit. This voltage was similarly dependent on patient posture and on deep respiration. Current injection has proved to be a safe, controllable and reproducible method of testing the sensitivity of implanted pacemakers to 50 Hz external interference. 相似文献
56.
Respiratory symptoms associated with the use of azodicarbonamide foaming agent in a plastics injection molding facility 总被引:1,自引:0,他引:1
L W Whitehead T G Robins L J Fine D J Hansen 《American journal of industrial medicine》1987,11(1):83-92
Respiratory health variables were studied cross-sectionally in 227 employees of a plastics molding facility where numerous complaints had been apparently associated with the use of azodicarbonamide foaming agent in injection molding. Pre- and postshift respiratory status measures and azodicarbonamide concentrations were also obtained for 17 employees. Cross-sectional pulmonary function differences by injection molding status were not observed. Modest decrements in pulmonary function measures were observed between start and end of shift but with no dose-effect relationship. A strong association was observed for injection molding workers for eye/nose/throat irritation, cough, and wheezing. Additionally, wheezing, chest tightness, and symptoms of chronic bronchitis were strongly associated with work in injection molding during periods in which azodicarbonamide was in use. These results suggest respiratory symptom causation by some combination of azodicarbonamide itself, reaction products of azodicarbonamide formed during injection molding, or other unidentified agents uniquely associated with the process of injection molding with azodicarbonamide foaming agent. 相似文献
57.
Fabio Ghezzi Maurizio Serati Antonella Cromi Stefano Uccella Stefano Salvatore Paola Triacca Pierfrancesco Bolis 《International urogynecology journal》2006,17(4):335-339
The purpose of this study was to evaluate the outcome of tension-free vaginal tape (TVT) procedure in women with urodynamic stress incontinence diagnosed as having intrinsic sphincteric deficiency (ISD). The combination of a maximal urethral closure pressure <20 cm H2O and a Valsalva leak point pressure <60 cm H2O was considered as diagnostic of ISD. Subjects with detrusor overactivity on preoperative urodynamics were excluded. A total of 35 patients with both low closure pressure and leak point pressure were enrolled. Bladder perforation occurred in three (8.6%) cases. Postoperative urinary voiding difficulties occurred in nine (25.7%) women. Two patients underwent surgical detension of the tape, with complete resolution of urinary retention and no relapse of incontinence. Women with postoperative voiding dysfunction had a significantly lower detrusorial pressure at the peak flow on preoperative urodynamics compared to those who voided efficiently after TVT. The mean (range) follow-up time was 12.5 months (3–36). The objective cure rate for stress incontinence was 91.4%. Two of the three (66%) patients in whom the TVT procedure failed had a fixed urethra. De novo urge incontinence was found in five (14.3%) patients. 相似文献
58.
59.
根据蓝四氮唑与泼尼松生成蓝色产物,并于525nm 波长处测定吸光度。测定条件为:反应管长度为3.8m(0.5mm id);流速为1.6ml/min;反应温度为55±0.5℃;注射样品溶液为100μl;本测定系统的测定速度可达100次/h;线性范围可达0.09mg/ml;检测限量为1.54μg/ml;测定结果的变异系数小于1%。 相似文献
60.