Background Transparent dressings are commonly used to cover central venous catheter sites. However, it has been suggested that they might not allow adequate moisture vapor transmission, resulting in local moistness th...Background Transparent dressings are commonly used to cover central venous catheter sites. However, it has been suggested that they might not allow adequate moisture vapor transmission, resulting in local moistness that promotes bacterial growth. We compared the moisture vapor transmission rates （MVTRs） of different, currently used transparent and traditional gauze dressings. We aimed to determine the MVTRs at different temperatures and humidities. Methods The dressings were used to seal 50-ml plastic centrifuge tubes containing 20 ml deionized water： Tubes in group 1 were covered with 12 layers of ordinary gauze, group 2 with IV3000, group 3 with OPSITE FLEXlGRID, group 4 with 3M HP Tegaderm, and group 5 with 3M Tegaderm. The tubes were placed upright in an artificial climate cabinet, so that the dressings were not touching the water, in order to simulate the conditions of medical dressings in contact with the skin. The average MVTRs were determined under different conditions. MVTRs were also determined with tubes from groups 2-5 laid on their sides, allowing the dressings to touch the water, so simulating contact of the dressings with sweating skin, or wounded skin with exudates. We also calculated the dressings＇ self-reactive abilities by comparing their MVTRs in contact with the water surface with those when not in contact with the water surface. Results Group 1 demonstrated the highest MVTR, followed by groups 2, 4, 3 and 5 under conditions simulating contact of the dressings with normal skin at the following temperatures and humidities： 20℃/30%, 20℃/60%, 20℃/90%, 37℃/30%, 37℃/60% and 37℃/90%. When the relative humidity （RH） increased, the MVTRs decreased. The MVTRs differed significantly among different dressings and RHs： At high temperature （37℃） and high humidity （90%）, the MVTR of the transparent dressings in group 2 was higher than that of group 1 （P 〈0.01）. The reactive MVTR was highest in group 2 （10.2-16.3 times 〉MVTR） while that of group 4 was second展开更多
目的评价两种高潮气通透率透明贴膜在临床中心静脉置管中的作用。方法选择住院行锁骨下中心静脉置管(CVC)的患者334例,随机分成试验1组112例,使用透明贴膜为英国施乐辉IV3000透明贴膜留置14d;试验2组110例,使用3M中国有限公司生产的3M H...目的评价两种高潮气通透率透明贴膜在临床中心静脉置管中的作用。方法选择住院行锁骨下中心静脉置管(CVC)的患者334例,随机分成试验1组112例,使用透明贴膜为英国施乐辉IV3000透明贴膜留置14d;试验2组110例,使用3M中国有限公司生产的3M HP TegadermTM留置14d;对照组112例,使用3M Tegader-mTM留置时间为1d;3组留置导管均于1个月拔管,拔管后无菌剪取导管头端2～3cm行细菌培养及药敏试验,观察其导管相关感染率;更换敷料时以秒表计算每次更换时间,评估护理工作量。结果试验1组与2组及对照组感染发生率分别为0.9%、6.4%和7.1%,差异有统计学意义(P<0.05);试验1、2组透明贴膜<1月平均更换次数为(2.04±0.85)、(2.08±0.76)次,对照组透明贴膜30次,差异均有统计学意义(P<0.01);透明贴膜1月内平均更换总时间,试验组1、2组分别为(414.5±20.8)、(418.7±23.2)s,差异无统计学意义,但与对照组的(5970±230.6)s比较,差异均有统计学意义(P<0.01)。结论高潮气通透率的透明贴膜,在中心静脉置管中的应用,降低了导管医院感染的发生率,节约了护理时间,值得在临床进一步推广。展开更多
文摘Background Transparent dressings are commonly used to cover central venous catheter sites. However, it has been suggested that they might not allow adequate moisture vapor transmission, resulting in local moistness that promotes bacterial growth. We compared the moisture vapor transmission rates （MVTRs） of different, currently used transparent and traditional gauze dressings. We aimed to determine the MVTRs at different temperatures and humidities. Methods The dressings were used to seal 50-ml plastic centrifuge tubes containing 20 ml deionized water： Tubes in group 1 were covered with 12 layers of ordinary gauze, group 2 with IV3000, group 3 with OPSITE FLEXlGRID, group 4 with 3M HP Tegaderm, and group 5 with 3M Tegaderm. The tubes were placed upright in an artificial climate cabinet, so that the dressings were not touching the water, in order to simulate the conditions of medical dressings in contact with the skin. The average MVTRs were determined under different conditions. MVTRs were also determined with tubes from groups 2-5 laid on their sides, allowing the dressings to touch the water, so simulating contact of the dressings with sweating skin, or wounded skin with exudates. We also calculated the dressings＇ self-reactive abilities by comparing their MVTRs in contact with the water surface with those when not in contact with the water surface. Results Group 1 demonstrated the highest MVTR, followed by groups 2, 4, 3 and 5 under conditions simulating contact of the dressings with normal skin at the following temperatures and humidities： 20℃/30%, 20℃/60%, 20℃/90%, 37℃/30%, 37℃/60% and 37℃/90%. When the relative humidity （RH） increased, the MVTRs decreased. The MVTRs differed significantly among different dressings and RHs： At high temperature （37℃） and high humidity （90%）, the MVTR of the transparent dressings in group 2 was higher than that of group 1 （P 〈0.01）. The reactive MVTR was highest in group 2 （10.2-16.3 times 〉MVTR） while that of group 4 was second
文摘目的评价两种高潮气通透率透明贴膜在临床中心静脉置管中的作用。方法选择住院行锁骨下中心静脉置管(CVC)的患者334例,随机分成试验1组112例,使用透明贴膜为英国施乐辉IV3000透明贴膜留置14d;试验2组110例,使用3M中国有限公司生产的3M HP TegadermTM留置14d;对照组112例,使用3M Tegader-mTM留置时间为1d;3组留置导管均于1个月拔管,拔管后无菌剪取导管头端2～3cm行细菌培养及药敏试验,观察其导管相关感染率;更换敷料时以秒表计算每次更换时间,评估护理工作量。结果试验1组与2组及对照组感染发生率分别为0.9%、6.4%和7.1%,差异有统计学意义(P<0.05);试验1、2组透明贴膜<1月平均更换次数为(2.04±0.85)、(2.08±0.76)次,对照组透明贴膜30次,差异均有统计学意义(P<0.01);透明贴膜1月内平均更换总时间,试验组1、2组分别为(414.5±20.8)、(418.7±23.2)s,差异无统计学意义,但与对照组的(5970±230.6)s比较,差异均有统计学意义(P<0.01)。结论高潮气通透率的透明贴膜,在中心静脉置管中的应用,降低了导管医院感染的发生率,节约了护理时间,值得在临床进一步推广。
