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phlebotomy mod b
infection control, safety and quality control
Question | Answer |
---|---|
name the 4 conditions required for bacterial growth | moisture, temperature, oxygen and light |
moisture for bacteria to grow can be found in | skin, mucous membranes, wet dressings, wounds, dirty instruments and needles |
optimum temp for bacteria to grow | 98.6F (37C) body temp |
temp that can kill bacteria | 107F (42C) |
aerobic bacteria | require oxygen to live |
anaerobic bacteria | can survive without oxygen |
what kind of light does bacteria require to grow | darkness favours the bacteria, they will die if exposed to direct sunlight or ultraviolet light |
name the natural barriers the body has to break the chain of infection | skin, mucous membranes, GI tract, lymphoid and blood systems |
what is the largest natural barrier to infection & what/how does it work | intact skin, low pH factor inhibits bacterial action. |
how do mucous membranes help repel bacteria | throat - coughing, mucous helps flush. nose - sneeze. GI - acid. |
list some of the places mucous membranes are found | respiratory, digestive, reproductive, urinary tract |
what constitutes a reservoir or "source" | individuals who are ill with a disease and human carriers of disease who are unaware they have the disease but can still spread it. |
portal of exit, or means of escape from the reservoir | respiratory tract secretions, intestinal waste products, reproductive tract secretions, blood and blood products and across the placental barrier |
means of transmission for the pathogen to pass directly from the reservoir to the new host | milk or water |
portal of entry or means of entry | respiratory tract, skin an mucous membranes, reproductive and urinary tracts, blood, and across the placental barrier, for the pathogen to enter into the new host |
susceptible host | elderly patient, immunocompromised, poor nutrition, lack of sleep, very young |
single best step to prevent the spread of infection | hand washing |
asepsis | medically it refers to the destruction of organisms after they leave the body. |
asepsis techniques | hand washing, disposable equipment, wearing gloves |
surgical asepsis techniques | surgical hand washing, sterile gloves and equipment |
isolation procedures & some equipment | protect both the patient and the health care worker. PPE equipment such as eye shields, gowns, gloves, masks |
strict isolation | when patients have a highly contagious disease such as bacterial pneumonia, smallpox, diphtheria or chicken pox. Private closed room. |
enteric isolation | for patients who have intestinal infections such as salmonella, shigella and hep A & E. Must wear a gown and gloves, all waste material is disposed of in special containers in the room. |
contact isolation | used for patients who have diseases such as influenza. Direct contact transmission. Masks, gowns and gloves. |
respiratory isolation | used for patients who have diseases that can be spread by droplet infection such as haemophilus influenza, meningococcal meningitis, tuberculosis or measles. Private room with closed doors. Masks |
wound or skin isolation | used for patients who have an open wound, sore or skin infection. Gown and gloves |
reverse isolation or protective isolation | used to protect noninfectious patients who may be susceptible to disease or infection. Ex. immunodeficiency diseases, tissue transplants, burns or chemotherapy & newborn nurseries. Anything brought in must be sterile. Masks, gowns and gloves. |
standard precautions apply to what bodily fluids | blood, non intact skin - tissue specimen, all body fluids except sweat. |
standard precautions equipment | hand washing and the use of gloves, masks & gowns, eye protection |