Asepsis and Infection Control Flashcards
What is the first line of defense
Normal flora
What is normal flora
“good” baceria and INHIBITS “bad: pathogens
What is the second line of defense
The inflammatory response
Is the inflammatory response local
Yes
When does the inflammatory response happen
Response to injury or ingaction
What happens biologicaly in the inflammatory response
Capillaries dilate and WBCs increase
What effects does the increase in WBCs create
REDness, SWELLING, WARMTH, PAIN
What does the inflammatory response activiate
The immune response
What initiates the immune response
Recognition of antigens
What are antigens
Bad bacteria, toxins, chemicals, drugs, particles
What are the types of immune response
Innate and adaptive
Which type of immunity is nonspecific
Innate
Which type of immunity is specific
Adaptive
What is the immediate response to an antigen
Innate
Are you born with an innate immunity
Yes
How do you auccire adaptive immunity
After EXPOSURE, WBCs produce ANTIBODIES in response to ANTIGENS
What are the specific type of cells that learn which bacteria is good or bad
B and T cells
How can you gain immunization/ exposure to a certain pathogen
Vaccinations
How does passive immunity work
Babies in UTERO or via BREASTMILK
How does the skin protect the body
IMPERMEABLE to most microorganisms, SWEAT has a low pH which INHIBITS bacterial growth
How does the respiratory tract protect the body
CILIA and MUCUS trap and move foreign bodies, contain proteins with ANTIMICROBIAL properties
How does the GI system protect the body
Gut FLORA and LOW pH
What is the definition of virulence
The ablity of a pathogen to invade and injure host
What 6 component must all be present and intect for an infection to occur
Infectious AGENT, SOURCE, portal of EXIT, mode of TRANSMISSION, portal of ENTRY, susceptible HOST
Hand washing interrupts the chain of infection cycle at which step?
Mode of transmission
What is the inbuation period
Time between pathogen ENTERING the body and presentation of first SYMPTOMS
What is the prodromal stage
The pathogen MULTIPLIES and changes from GENERAL to more DISTINCT symptoms
What is the illness stage
Syptoms specific to infection
What is the convalescence stage
Acute symptoms disappear and begin RECOVERY
How long can recovery from an illness be
Days to months
What are the risks for infection
EVERYTHING, poor HYGIENE, people with COMPROMISED health, living in CROWED places, OLD people, NEEDLES, protected SEX, TRAVEL, SMOKING, STRESS, poor NUTRITION
Who are the individuals that likely have compromised health and poor defenses
Young, old, and chemo pts
Why are homeless people more likely to get TB
They live in CROWDED shelters
What does HAI stand for and whats another name for it
Healthy-care acquired infections or nosocomial infections
What are the costs of HAIs
MONEY, LONGER stays, loss of EARNING, DISRUPTION of life, DEATH, PAIN, lack of TRUST
What are the common culprits of HAIs
INDWELLING medical devices, TRANSMISSION between pts and healthcare workers, overuse and misuse of ABX (antibiotics), ICU settings
Why are we worried about the overuse and misuse of antibotics
It can create drug resistant organisms
How can HAIs be avoided
HANDWASHING, PPE, STERILE technique
What is the most effective method of HAI prevention
Handwashing
What is the local signs and symptoms of infection
ERYTHEMA, WARMTH, PAIN, TENDERNESS, DRAINAGE, EDEMA