Basic Health Care 2 Flashcards
invasion of the body tissue by organisms and their proliferation there
Infection
the absence of disease-producing microorganisms and being free from infection
Asepsis
practices designed to reduce the number and transfer of pathogens, also called “Clean Technique”
Medical asepsis
practices that render and keep objects and areas free from microorganism, also called “Sterile Technique”
Surgical Asepsis
extends from the entry of microorganisms into the body to the onset of signs and symptoms
Incubation Period
extends from the onset of non-specific signs and symptoms to the appearance of specific signs and symptoms
Prodromal Period
specific signs and symptoms develop and become evident
Illness period
signs and symptoms start to abate until the client returns to normal state of health
Convalescent period
- Refers to microorganism
- The ability of the infectious agent to cause disease depends on the virulence, invasiveness and specificity
Ex: bacteria, fungi, virus, parasites
Etiologic Agent/ Infectious Agent
-Source of pathogen
-Humans (client, visitors, healthcare personnel)
-Animals (insects, rats), Plants
Reservoir
- a way for the pathogen to escape from the reservoir
respiratory tract: droplets, serum
gastrointestinal tract: vomitus, feces, saliva, drainage tubes - urinary tract: urine, urethral catheters
- reproductive tract: semen, vaginal discharge
- blood: open wound, needle puncture site
Portal of Exit
- way for the pathogen to travel or transfer like direct contact, airborne, droplet
Mode of Transmission
This permits the organism to gain entrance into the host
Pathogens can enter susceptible host through body orifices such as mouth, nose, ears, eyes, vagina, rectum and urethra
Breaks in the skin or mucous membranes from wounds and abrasion increase chance for organisms to enter hosts.
Portal of Entry
a person who is at risk for infection, whose own body defense mechanisms, when exposed are unable to withstand invasion of pathogens
ex: malnourished children, cancer patients
Susceptible Host
involves immediate and direct transfer from person to person
Direct Contact
occurs when susceptible host is exposed to a contaminated object such as dressing, needle, surgical instrument
Indirect contact
occurs when mucous membrane of the nose, mouth or conjunctiva are exposed to secretions of an infected person who is coughing, sneezing, laughing, or talking
usually at a distance of 3 meters
Droplet Transmission
involves the transfer of microorganisms by way of vehicles or contaminated items that transmit pathogens
ex: food, water, milk, blood, eating utensils, pillows, mattress
Vehicle Transmission
occurs when fine particles are suspended in the air for a long time or when dust particles contain pathogen
air currents disperses microorganisms which can be inhaled or deposited on the skin of susceptible host
Airborne Transmission
animals like rats, snails, mosquitos
Biologic Vectors
are inanimate objects that are infected with infected body fluids like contaminated needles and syringes
Mechanical vectors
Antibodies are produced by the body in response to infection.
Active Immunization
antibodies are formed in the presence of active infection in the body, it is lifelong
Natural Active Immunization
antigens (vaccines or toxoids) are administered to stimulate the antibody production
requires booster inoculation after many years
ex: tetanus toxoid, OPV
Artificial Active Immunization
antibodies are produced by another source such as animal or human
Passive Immunization
antibodies are transferred from the mother to her newborn through placenta or in the colostrums
Natural Passive Immunization
immune serum (antibody) from an animal or human is injected to a person
ex: tetanus immunoglobulin human (TGH)
Artificial Passive Immunization
the single most important infection control practice
Handwashing
the physical removal of visible dirt and debris by washing, dusting or mopping surfaces that are contaminated. Soap is used for mechanical cleaning
Cleaning
the chemical or physical processes used to reduce number of potential pathogens on an object’s surface
Disinfection
complete destruction of all microorganisms and spores, leaving no viable forms of organisms
Sterilization
- this method is non-toxic, inexpensive, sporicidal, and able to penetrate fabric rapidly
- used to sterilize surgical dressings, surgical linens, parenteral nutrition, metal or glass objects
- color indicator strips change color, indicating that sterilization has occurred
- check packaging for integrity and always check the expiration date to ensure sterility of the object
Steam sterilization