Module 04: Asepsis and Infection Control Flashcards
What are the nature of microorganisms in the human body?
Most microorganism are harmless and may even be beneficial.
These microorganisms are the collective vegetation in a given area.
Resident Flora
These are the microorganisms that are microbial species that can be cultured from body surfaces under certain circumstances.
Transient Flora
What are four (4) major microorganisms causing infections in humans?
(1) Bacteria
(2) Viruses
(3) Fungi
(4) Parasites
This is the growth of microorganisms in body tissues where they are not usually found.
Infection
This is the detectable alteration in normal tissue function.
Disease
This infections pertains to the one with no clinical evidence of disease.
Asymptomatic or Subclinical
This is the ability produce disease.
Pathogenicity
This can be transmitted to an individual.
Communicable Disease
These cause disease only in susceptible individuals.
Opportunistic Pathogens
This pertains to the freedom of disease-causing microorganisms.
Asepsis
What are the two (2) types of asepsis?
(1) Medical Asepsis
(2) Surgical Asepsis
This type of asepsis pertains to the practices intended to confine a specific microorganisms to a specific area.
Medical Asepsis
This type of asepsis pertains to the practices that intend to keep an area or object free from all microorganisms.
Surgical Asepsis
What are the four (4) types of infection?
(1) Colonization
(2) Local Infection
(3) Systematic Infection
(4) Bacteremia
This type of infection pertains to process by which strains of microorganisms become resident flora.
Colonization
This type of infection is limited to the specific part of the body where the microorganisms remain.
Local Infection
This type of infection pertains to when the microorganisms spread and damage different parts of the body.
Systematic Infection
This type of infection pertains to when the culture of the individual’s blood reveals microorganisms.
Bacteremia
These are infections that originate in any healthcare setting.
Healthcare-Associated Infections
This source of Healthcare-Associated Infections pertains to when the infection originates from the client themselves.
Endogenous
This source of Healthcare-Associated Infections pertains to when the infection originates from the hospital environment and hospital personnel.
Exogenous
According to the Centers for Disease Control and Prevention, this type of HAI pertains to the serious infection that occurs when microorganisms enter the bloodstream through a large catheter placed in a large vein.
Central Line-Associated Blood Stream Infections (CLABSI)
According to the Centers for Disease Control and Prevention, this type of HAI pertains to any infection involving any part of the urinary system (urethra, ureters, bladder or kidneys) acquired from the hospital?
Catheter-Associated Urinary Tract Infection (CAUTI)
According to the Centers for Disease Control and Prevention, this type of HAI pertains to an infection that occurs after surgery in the part of the body where the surgery took place.
Surgical Site Infection (SSI)
According to the Centers for Disease Control and Prevention, this type of HAI pertains to the lung infection that develops in a person on a machine used to help the client to breathe.
Ventilator Associated Pneumonia (VAP)
Explain the chain of infection.
(1) Etiologic Agent
(2) Reservoir
(3) Portal of Exit
(4) Mode of Transmission
(5) Portal of Entry
(6) Susceptible Host
What are the factors that can be considered as an etiologic agent?
(1) Numbers of organisms present
(2) Virulence and potency
(3) Ability to enter the host’s body
(4) Susceptibility of the host
(5) Ability to live in the host’s body
What are the factors that can be considered as a reservoir or the source of microorganisms?
(1) Humans or carriers
(2) Plants
(3) Animals
(4) Medical Equipment
(5) General Environment
This factors pertains to when an infectious agent may be transmitted from its natural reservoir to a susceptible host in different ways.
Chain of Infection or Modes of Transmission
What are the different types of Direct Modes of Transmission?
(1) Direct Contact
(2) Droplet Spread
What are the different types of Indirect Modes of Transmission?
(1) Airborne
(2) Vehicle-borne
(3) Vector-borne (mechanical or biologic)
This mode of transmission occurs through skin-to-skin contact, kissing, and sexual intercourse. Also refers to contact with soil or vegetation harboring infectious organisms.
Direct Contact
This mode of transmission pertains to the spray with relatively large, short-ranged aerosols produced by sneezing, coughing, or even talking. This can be classified as direct because the transmission is by direct spray over a few feet, before the droplet falls to the ground.
Droplet Spread
This mode of transmission occurs when infectious agents are carried by dust or droplet nuclei suspended in the air.
Airborne
What are the sizes of microorganisms transmitted through airborne?
5 microns in size
This mode of transmission is the indirect transmit of an infectious agent via food, water, biologic products (blood), and fomites (inanimate objects such as handkerchiefs, bedding or surgical scalpels).
Vehicle
This mode of transmission is when the infection is transferred via mosquitoes, fleas and ticks that may carry an infectious agent through purely mechanical means or may support growth or changes in the agent.
Vector
What are the different types of the portal of entry?
(1) Before an individual can become infected, microorganisms must enter the body.
(2) The skin is a barrier to infectious agents; however, any break in the skin can readily serve as a portal of entry.
(3) Medical interventions such as tubes, catheters, and surgical wounds are common portals of entry
This pertains to any individual who is at risk for infection.
Susceptible Host
This pertains to an individual who has increased risk and who for one or more reasons is more likely than others to acquire an infection.
Compromised Host
What are the different factors affecting a person’s susceptibility?
(1) Impairment of immune system
(2) Age (the very young or the very old);
(3) Clients receiving immune suppression treatment
(4) Immune deficiency conditions.
What are the different types of body defenses?
(1) Non specific
(2) Specific
This type of body defense protects the individual against all microorganisms?
Non specific Body Defense
This type of body defenses is directed against identifiable infectious agent.
Specific Body Defense
This type of non specific defense pertains to the first line of defense.
Intact Skin Mucous Membranes
What are the different types of intact skin mucous membranes?
(1) Skin Factors: Dryness of the skin, Resident bacteria and normal secretions that is slightly acidic
(2) Nasal Passages have cilia and moist mucous that trap MOs
(3) Oral Cavity that sheds epithelium to rid of mouth MOs, saliva has lactoferrin, lysozyme and IgA
(4) Eye is protected by tears to wash MOs
(5) GI tract have the high acidity of the stomach and resident flora of the colon
(6) Vagina has a pH that inhibits growth of MOs
This type of non specific defense is the local and nonspecific defensive response of the tissues to an injurious or infectious agent.
Inflammatory Response
The inflammatory response is characterized by what?
(1) Pain (dolor)
(2) Swelling (tumor)
(3) Redness (rubor)
(4) Heat (calor)
(5) Impaired function (functio laesa)
Infectious agents are classified as either:
(1) Physical Agents
(2) Chemical Agents
(3) Microorganisms
What are the three (3) Stages of inflammatory response?
(1) Vascular and cellular response
(2) Exudate Production
(3) Reparative Phase
Enumerate the vascular and cellular responses.
(1) Vasoconstriction at the site of injury
(2) Dilation of small blood vessels due to histamine release
(3) Hyperemia (increased blood supply) that leads to redness and heat
(4) Vascular permeability increases and release of chemical mediators (bradykinin, serotonin, prostaglandin) and histamine
(5) WBC, fluids and proteins leaks into the interstitial spaces leading to swelling and pain
(6) Pain is caused by pressure of accumulating fluid on nerve endings and irritating mediators
(7) Fluid pouring into joints will impair function
(8) Leukocytosis ensues (increase production of WBC from bone marrow)
Enumerate what happens when there is tissue injury caused by physical or chemical agent and pathogenic microorganism.
(1) Heat - Capillary Widening and increased blood flow
(2) Redness - Increased permeability and fluid release into tissues
(3) Swelling and Tenderness - Attraction of leukocytes and extravasation of leukocytes to site of injury
(4) Pain - Systematic response and fever and proliferation of leukocytes