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Objective To investigate the effect of dressing materials in various combinations on bum wound microenvironment and healing condition. Methods Two hundred donor sites with wounds of 0.3 mm in depth in 186 burn patients, who needed skingrafting and admitted to our ward were enrolled in study, and they were divided into A ( with dressing composed of aiginate + cotton pad for donor area), B ( with dressing composed of vaseline gauze + cotton pad for donor area) , C (with dressing composed of algi-nate+ foam dressing for donor area), D ( with dressing composed of vaseline gauze + foam dressing for donor area) groups according to random table method. Effect of dressings on wound evaporation and pH value were observed. Bacterial colonization, degree of pain complained by patients after dressing change, and wound healing time in each group were compared. Results One hundred and eighty-four patients complied with the study, while 2 patients were excluded due to untimely falling-off of the dressing. Wound evaporaton in respectively, among them B group showed optimal effect of keeping humidity (P<0.01). Wound pH value in A, B, C, D groups was 7.22±0.06, 7.41±0.03, 7.05±0.03, 7.34±0.06, respectively, among them it was highest in B group. The positive rate of bacteria in D group was highest (22.4%), and lowest in C group (4.0%). Pain was lightest in C group (score was 0.98±0.12), and most serious in B group ( score was 8.14±0.82). The shortest wound healing time was seen in C group (6.7±0.8 d) , and longest in D group (15.6±3.5 d). Conclusions Application of various dressings on similar wounds can pro-duce different wound microenvironment, which is closely related to wound healing time. Compared with pH value, humidity is the more important factor for wound healing. 相似文献
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低剂量辐射对小鼠肿瘤生长和肝组织中LPO,GSH—Px及SOD的影响 总被引:3,自引:0,他引:3
预先给予小剂量然后再给大剂量射线照射的小鼠较单纯给以大剂量照射者肝脏中脂质过氧化物(LPO)降低,而谷胱甘肽过氧化物酶(GSH-Px),超氧化物歧化酶(SOD)活性增高(P<0.01);且对单纯小剂量射线可以引起肝脏脂质过氧化物(LPO)降低(P<0.01)和谷胱甘肽过氧化物酶(GSH-Px),超氧化物歧化酶(SOD)活性也相应做了一定的研究。结果提示:在施以相同大剂量射线情况下,若预先给以全身小 相似文献
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不同敷料组合对烧伤患者供皮区创面微环境的影响 总被引:2,自引:1,他引:2
目的 了解不同敷料组合对烧伤创面微环境及愈合的影响.方法 选择烧伤后需行手术植皮的患者186例,供皮区创面取皮厚度均为0.3 mm.将200个供皮区创面按表格随机法进行分组,分为藻酸盐棉垫组(藻酸盐敷料+棉垫)、凡士林棉垫组(凡士林油纱+棉垫)、藻酸盐泡沫组(藻酸盐敷料+泡沫敷料)、凡士林泡沫组(凡七林油纱+泡沫敷料).观察各种敷料对患者创面水分蒸发量及pH值的影响,比较各组创面的细菌定植情况、揭除敷料时患者疼痛程度及创面愈合时间.结果 共有184例患者的198个创面完成试验全过程,4种组合敷料可造成不同的创面微环境.藻酸盐棉垫组、凡士林棉垫组、藻酸盐泡沫组、凡士林泡沫组患者创面的敷料表面水分蒸发量分别为(35.5±3.2)、(31.3±2.8)、(23.1±2.9)、(18.1±2.3)mL·h-1·m-2,保湿性能以凡士林泡沫组为佳;创面pH值分别为7.22±0.06、7.41±0.03、7.05±0.03、7.34±0.06.创面细菌培养阳性率以藻酸盐泡沫组(4.0%)最低,凡士林泡沫组(22.4%)最高.揭除患者创面敷料时疼痛程度以藻酸盐泡沫组最轻(0.98±0.12),凡士林棉垫组最重(8.14±0.82).创面愈合时间藻酸盐泡沫组最短,为(6.7±0.8)d;凡士林泡沫组最长,为(15.6±3.5)d.结论 不同敷料在同样创面上使用,会营造不同的创面微环境;该环境与创面愈合时间密切相关,湿度对创面愈合的影响比pH值更为重要. 相似文献
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苏士杰 《国际放射医学核医学杂志》1983,(2)
联合国原子辐射效应科学委员会(United Nations Scientific Committee On the Effects of Atomic Radiation,UNSCEAR)第31届会议,于1982年3月15日至26日在维也那召开。参加会议的有委员会成员国20个国家的代表、代理代表、顾问和来自UNEP~*、IAEA、WHO等三个国际机构,以及ICRP、ICRU二个国际学术团体的观察员。总共72 相似文献
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根据小剂量生物学效应实验研究的需要,作者设计制做了小鼠局部照射屏蔽盒。其优点①一次可摆放多只小鼠;②条件均一;③易于控制和操作;④照射时动物不需麻醉等特殊处理。经使用TLD测试证明在屏蔽区内动物脾区和头部吸收剂量分别降低到初始射束总剂量的0.85%和0.5%,能完全满足局部照射与全身相关关系等方面研究的需要。 相似文献
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本文报道了一年来对本校卫生系楼内、外空气中氡-222及其子体的观测情况。共采平行样896个,经测量分析,得出了室内、外空气中氡及其子体α潜能的年平均浓度:室内分别为3.18pCi/1j2911MeV/1,室外分别为0.49pCi/1,505MeV/1。大致摸清了月和昼夜氡及其子体的变化规律。并对影响氡及其子体浓度的有关气象条件进行了观测. 相似文献
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