医用小型平板电脑现场清洁消毒方法研究

Cleaning and disinfection methods of medical tablet computers

目的对临床使用的医用平板电脑污染程度进行调查,比较3种清洁消毒方法的有效性。方法采用手持式ATP荧光检测仪对平板电脑前后表面进行涂擦采样,研究分为基线阶段和清洁消毒阶段,基线阶段对使用中平板电脑进行采样,清洁消毒阶段采用生理盐水纱布、乙醇纱布、卫生湿巾3种方法对平板电脑进行擦拭后分别进行采样。结果基线阶段:基线组共采集20台平板电脑,合格率为0,ATP检测相对光单位值(RLU)中位数为218.00。清洁消毒阶段:生理盐水纱布组、乙醇纱布组和卫生湿巾组各采集10台平板电脑,合格率分别为50.00%、0和60.00%,ATP检测RLU中位数分别为28.50、79.00和29.00。4组ATP检测RLU间两两比较,除生理盐水纱布组与卫生湿巾组比较差异无统计学意义(P=0.97),其余组别两两比较差异均有统计学意义(均P<0.001)。结论日常医疗工作中医用平板电脑污染严重,卫生湿巾是较为理想的清洁消毒方法,但清洁消毒间隔时限还有待于进一步研究论证。

Objective To investigate the contamination of clinically used tablet computers,and compare the effectiveness of three cleaning and disinfection methods.Methods The front and back surfaces of tablet computers were wiped and detected by handheld adenosine triphosphate（ATP）fluorescence detector,the study was divided into baseline stage and cleaning and disinfection stage.During baseline stage,the tablet computers in use were directly wiped,during cleaning and disinfection stage,the tablet computers were wiped by normal saline-moistened gauze,alcohol-moistened gauze,and wet napkin.Results During baseline stage：20 tablet computers were wiped,the qualified rate was 0,the median of relative light unit（RLU）of ATP detection was 218.00.During cleaning and disinfection stage,10 tablet computers were wiped in each cleaning and disinfection group,and the qualified rate of normal saline-moistened gauze,alcohol-moistened gauze,and wet napkin groups were 50.00%,0,and 60.00%respectively,the median RLU of ATP detection were 28.50,79.00,and 29.00 respectively.Except comparison between saline-moistened gauze and wet napkin groups（P=0.97）,multiple comparison of RLU of ATP detection amongthe other groups were significantly different（all P0.001）.Conclusion Contamination of medical tablet computers are serious,wet napkin wiping is an ideal method for cleaning and disinfection,but the frequency for cleaning and disinfection needs to be further studied.