超声耦合剂对含碘消毒剂消毒效果的影响

Effect of ultrasonic coupling agent on iodine disinfectant

目的了解超声耦合剂是否对患者术前皮肤消毒用的含碘消毒剂产生屏蔽或拮抗作用。方法采用实验室载体浸泡杀灭、现场皮肤消毒等比对试验,对碘伏和超声耦合剂的拮抗、屏蔽作用进行分析。结果拮抗作用：不同浓度碘伏对菌片上金黄色葡萄球菌和大肠埃希菌的平均杀灭率均为100.00%;有效碘含量2 500 mg/L的碘伏＋耦合剂对菌片上金黄色葡萄球菌和大肠埃希菌的杀灭率分别为99.67%-99.78%和99.71%-99.82%,有效碘含量625 mg/L的碘伏＋耦合剂对上述两种菌的杀灭率分别为96.85%-98.25%和95.93%-98.56%。屏蔽作用：涂抹耦合剂后,碘伏、碘酊＋乙醇组对大肠埃希菌的平均杀灭率由100.00%分别下降至30.76%和94.48%;对金黄色葡萄球菌的平均杀灭率由99.99%和100.00%下降至55.55%和98.22%。现场皮肤试验：碘伏、碘酊＋乙醇组对皮肤表面自然菌的杀灭率均为99.99%;皮肤表面涂抹超声耦合剂后,碘伏、碘酊＋乙醇对皮肤表面自然菌的杀灭率分别降至92.62%和93.57%。结论术野残存的超声耦合剂对含碘消毒剂有一定的拮抗作用和屏蔽作用。

Objective To investigate whether ultrasonic coupling agent （UCA）can produce shielding or antago-nistic effect on iodine disinfectant for preoperative skin disinfection.Methods Shielding or antagonistic effect of UCA on iodine disinfectant were detected by laboratory carrier immersion killing test and on-the-spot skin disinfec-tion test.Results Antagonistic effect：after the mixing of iodophor with UCA,the average killing rate of iodophor containing available iodine 2 500mg/L and 625 mg/L to Staphylococcus aureus decreased from 100.00% to 99.67%-99.78% and 96.85 % - 98.25 %,respectively;the average killing rate to Escherichia coli decreased from 100.00% to 99.71 %-99.82% and 95 .93 %-98.56%,respectively.Shielding effect：after smearing with UCA, the average killing rate of iodophor and iodine tincture ＋ alcohol to Escherichia coli decreased from 100.00% to 30.76% and 100.00% to 94.48%,respectively;the average killing rate to Staphylococcus aureus decreased from 99.99% to 55 .55 % and 100.00% to 98.22%,respectively.On-the-spot skin disinfection test：the killing rate of io-dophor and iodine tincture ＋alcohol to natural bacteria on skin surface were both 99.99%,after skin was smeared with UCA,the killing rate decreased to 92.62% and 93 .57%,respectively.Conclusion UCA remained on the oper-ative field has shielding and antagonistic effect on iodine disinfectant.