Medical/Surgical Asepsis - Unit 1 Flashcards
Medical Asepsis/Clean Technique - practices that…
practices that reduce/limit the number, growth, and direct or indirect transfer of disease producing microorganisms.
Surgical Asepsis/Sterile Technique - measures that..
render & maintain objects free from ALL microorganisms including spores.
Clean - def
denotes the presence of some microorganisms, but the absence of potentially infectious agents.
Dirty - def
soiled/contaminated - denotes the likely presence of microorganisms that are capable of causing disease.
Pathogen - def
disease causing microorganism.
Infection - def
Infiltration/invasion of an area by a pathogen.
Nosocomial Infection - def
Hospital acquired infection.
What are the top 6 nosocomial infections?
- UTI
- Surgical Wound Infection
- Nosocomial Pneumonia
- Bacterionemia - Bacteria in the blood.
- Burn wound infection
- Enterig Infection = food or water born.
UTI - If a patient has a foley catheter, there’s a ___ % chance they will get a UTI.
100%!!!!!
For an infection to occur, there must be an interaction between…
a susceptible host & an infection agent is required.
What are the six links in chain of infection?
- Microorganism/infectious agent.
- Reservoir - Source of infectious agent.
- Portal of exit - way infectious agent leaves the reservoir.
- Mode of transmission - route by which infectious agent is transmitted.
- Portal of entry - method by which infectious agent enters the body (susceptible host.)
- Susceptible Host - Person who is at risk for an infection.
What is the goal of medical/surgical asepsis/infection control?
Break chain of infection! Intervention to break chain can occur at any link.
Any microorganism is potentially pathogenic (potential to cause disease in susceptible house.) T/F?
True!
Extent of capability to produce infectious process depends on….
of microorganisms present, virulence (ability to cause infection), ability of organism to enter body, susceptibility of host (how good the immune system is, etc.)
Normal flora - these are microorganisms that…
normally inhabit a body site.
Normal flora - E. Coli is fine in the intestines, but what happens if it ends up in the urinary tract?
It could cause an infection!
Organisms that are normal flora & do not cause infection in a person who is healthy may cause infection in a person whose…
immune defenses are compromised.
Reservoir - def
any habitat of the organism - place where it can grow and reproduce, etc.
Sources of reservoirs?
Humans (self and others), plants, animals, ticks, water supplies, uncooked poultry, etc.
Carrier - def
carry disease producing organisms in body, but are not ill themselves..like Typhoid Mary!
What are the 4 types of carriers?
- Chronic - long time.
- Intermittent - can shed organisms at intervals. (S. aureus in nose.)
- Transient Carriage - like e coli on fingers.
- Resident Flora - (S. Aureus in nose.)
How do we break the chain between the infectious agent and the reservoir?
Sterilization, antibiotics/antimicrobials, handwashing (#1 way of eliminating an infection!)
What are some portal of exits? Example - respiratory tract -
Nose and mouth!
Breaking the chain between the reservoir and the exit from the reservoir - how to?
Personal Hygiene, Dressing changes, disposal of fluid canisters, changing soiled linen…