Optimization of pressure steam sterilization monitoring for loaned instruments
OBJECTIVE To test the results of sterilization parameters and different sterilization indicators of loaned instruments in different sterilization exposure time procedures,and to provide practical basis for reasonable selec-tion of sterilization procedures of loaned instruments,improving and optimizing the sterilization monitoring schemes.METHODS Sterilization procedures were performed at 134 ℃ for different exposure time.Detectors of temperature and pressure were placed inside the instrument pack to test the sterilization parameters.Conventional chemical indicators and extended sterilization procedure chemical indicators were placed inside the instrument pack and standard test pack,and different kinds of PCDs was placed outside the packs to monitor sterilization effect.The monitoring effect of different indicators was evaluated by comparing sterilization parameters.RESULTS When the failed sterilization parameters(1 s,1 min)was set,the maintenance time in the instrument pack could not meet the sterilization requirements.Type 6 PCD,helix PCD,lead-free type 5 cards,extended cards and double-type-5 PCD were not qualified,while leaded type 4 cards,migration strips and comprehensive PCD are qualified.After sterilization exposure for 4 min,the inside of the ratchet handle could not meet the sterilization require-ments,although other instruments reached sufficient sterilization maintenance time,and lead-free extended card and double-type-5 PCD were not qualified.Sterilization exposure for 7 min and 10 min procedures,inside of the ratchet handle achieved the sterilization requirements,and lead-free extended card and double-type-5 PCD also qualified.CONCLUSION The existing monitoring methods need to be optimized.Type 6 PCD and helix PCD can represent the difficulty of instrument sterilization,which can be used to monitor the sterilization effect of some in-struments with conventional sterilization procedures and insignificant heating delays.And the other instruments with extended sterilization procedures and obvious heating delays,the corresponding extended card and double-type-5 PCD should be used to monitor the sterilization effect.
NETL
NSTL
万方数据
