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pht 100 102
chapter 10 part 2
Question | Answer |
---|---|
native americans were decimated by | european disease like small pox |
1/4 of mothers died from | infected doctors & nurses unsterile hands and instruments during child delivery |
in 1918 the flu killed | 25 million people world wide |
asepsis is the absence of | infectuous microorganism |
sterilization is the process of | killing infectuous microorganism which leads to asepsis |
5 sterilization methods are | heat, drying, mechanical, gas, and chemical |
water boiling for 10 minutes kills | viruses, fungi, & many vegitative forms |
water boiling for more than 10 minutes kills | fungus, spores, & hepatitis |
autoclaves sterilize with | 270`F & psi pressure |
most organism are sterilized in | 15 min. |
dry heat or direct flames kill | all organisms |
filteration is | mechanical sterilization |
mechanical sterilization is used for heat sensitivity materials like | culture media, enzymes, vaccine, antibiotic solutions, asepsis, & steralization |
gas sterilization is used for | materials subject to heat distruction |
ethylene oxide is used | in gas sterilization |
gas sterilization requires | special aeration equipment |
large institutions & manufacturing facilities use | gas sterilization equipment |
chemical sterilization isn't | 100% effective |
in chemical sterilization, microbial numbers are | reduced to safety levels |
iodine, isopropyle alcohol (ipa), & chlorine bleach are | topical disinfectant |
air, water, & touching can | cause & spread contaminants |
hair, skin, & nails carry | millions of bacteria |
touching is the most common contaminant | the easiest to control |
tap water, dust particles, & moist dropplets carry | microorganisms |