Infectious Disease- Exam 1 Flashcards
Name the 6 links in the chain of infection.
- Infectious Agent
- Reservoirs
- Portal of Exit
- Means of Transmission
- Portal of Entry
- Susceptible Host
Name the Infectious Agents in the chain of infection.
-Bacteria
-Fungi
-Viruses
-Rickettsiae
-Protozoa
How do you break the chain of infection at the Infectious Agent link?
Rapid accurate identification of organisms
What are examples of Reservoirs in the chain of infection?
-People
-Equipment
-Water
What are examples of ways to break the chain of infection at the Reservoir link?
-Employee health
-Environmental Sanitation
-Disinfection/sterilization
What are examples of Portal of Exit in the chain of infection?
-Excretions
-Secretions
-Skin
-Droplets
How can you break the chain of infection at the Portal of Exit link?
-Hand hygiene
-Control of excretions & secretions
-Trash & waste
What are the Means of Transmission in the chain of infection?
-Direct contact
-Ingestion
-Fomites
-Airborne
What are ways of breaking the chain of infection at the Means of Transmission link?
-Hand hygiene
-Sterilization
-Standard precautions
-Airflow control
-Food handling
-Isolation
What are examples of Portal of Entry in the chain of infection?
-Mucous membranes
-GI Tract
-GU Tract
-Respiratory tract
-Broken skin
What are ways to break the chain of infection at the Portal of Entry link?
-Aseptic technique
-Catheter care
-Wound care
What are examples of Susceptible Hosts in the chain of infection?
-Immunosuppression
-Diabetes
-Surgery
-Burns
-Elderly
What are ways to break the chain of infection at the Susceptible Host link?
-Treatment of underlying diseases
-Recognition of high-risk patients
What link in the chain of infection would E. coli be?
Infectious Agent
What link in the chain of infection would the GI Tract be?
Reservoir
What link in the chain of infection would the Anus be?
Portal of Exit
What link in the chain of infection would improper wiping (back to front) be?
Means of Transmission
What link would the Urethra be in the chain of infection?
Portal of Entry
What link would a woman be in the chain of infection?
Susceptible Host
Definition: Describes microorganisms present without host interference or interaction.
Colonization
What is an example of colonization?
S. aureus on the skin without any skin interruption or irritation
Definition: Indicates host interaction with the organism.
Break in skin allows organism to enter host.
Infection
(Not septic, localized area)
Definition: The infected host displays a decline in wellness caused by the infection.
Infectious disease
(Inside bloodstream)
List some Infection Control & Prevention organizations
-WHO
-CDC
-OSHA
-Local agencies (Health Department)
-Hospital & facility infection control specialists
Which type of patients do we use Standard Precautions for?
All patients
What type of patients do we use Transmission-based precautions for?
Patients with known infectious diseases spread by airborne, droplet, contact routes
List some Standard Precautions
-Hand hygiene
-Use of gloves & other barriers
-Proper handling of patient care equipment & linen
-Environmental control
-Prevention of injury from sharp devices & needles
-Patient placement
Name the 4 different categories of Transmission Based Precautions?
- Airborne Precautions
- Droplet Precautions
- Contact Precautions
- Enhanced Precautions
List some Airborne Precautions
-Negative pressure room
-N-95 Respirator
List some illnesses that fall into the category of Airborne Precautions
-TB
-Varicella
-Anthrax
What illnesses are Droplet Precautions used for?
-Influenza
-Meningococcus
-PNA (Pneumonia)