Module 3C: Infection Control and Saftey Flashcards
Purpose of infection control
To minimize and remove a variety of disease-causing micro-organisms from the health care environment.
Micro-organisms
An organism that can only been seen through a microscope, including bacteria, protozoa, algae, and fungi.
Pathogenic
Causes disease.
Medical asepsis
Clean technique that includes frequent hand hygiene, proper use of gloves, cleaning and sterilizing medical equipment, and sanitizing surfaces.
Communicable diseases
An illness that is spread from one person to another or from an animal to a person or from a surface or food.
Transmission
Can occur in various ways but mainly from direct contact with the pathogen.
For the transmission of a disease to occur, there must be a pathogen or infectious agent present.
Varicella (chicken pox)
Direct or indirect contact from infected droplets or airborne secretions
Viral meningitis
Direct contact, respiratory secretions, and oral-fecal route
Bacterial meningitis
Direct contact and infected droplets from respiratory tract
Conjunctivitis (pinkeye)
Direct or indirect contact with eye discharge or discharge from upper respiratory tract of infected patient
Rhinovirus (common cold)
Direct or indirect contact from airborne or respiratory secretion droplets
Strep throat
Direct contact with infected individual, respiratory secretions
Pertussis (whooping cough)
Direct contact with respiratory secretion droplets
Influenza (flu)
Direct contact with respiratory secretion droplets
Pathogens
Disease causing micro-organisms:
- viruses
- bacteria
- fungi
- parasites: can be further classified as protozoa, helminths, ectoparasite, and rickettsia.
Nonpathogens
Harmless and do not cause disease.
Normal flora
Micro-organisms that live on or within the body without causing disease.
Responsible for many important functions, such as synthesizing and excreting vitamins as well as preventing colonization of pathogens.
Virus Examples
Rhinovirus (common cold)
Varicella (chicken pox)
HIV/AIDS
Hepatitis
Coronavirus
Bacteria Examples
E. coli (urinary tract infections)
Vibrio cholerae (cholera)
Bordetella pertussis (whooping cough)
Fungi Examples
Histoplasmosis (lung infection passed on by certain bird/bat droppings)
Tinea pedis (athlete’s foot)
Candida albicans (yeast infection)
Parasite Examples
Toxoplasmosis
Pinworm
Tapeworm
Scabies
Lice
Lyme disease
Chain of Infection
For the transmission of a pathogen to occur, the following links in the cycle of infection must be connected.
- Infectious agent
- Reservoir/source
- Portal of exit
- Mode of transmission
- Portal of entry to host
- Susceptible host
If this chain is interrupted, it can break the infection process, thus preventing the continuation of the cycle and halting infection.
Sign vs Symptom
Sign is a manifestation that can be perceived (ex: fever, swollen lymph nodes, tachycardia)
Symptom is a manifestation of something that is only apparent or felt by patient (ex: chills, pain and aching, nausea)
Signs of Infectious Diseases
Fever
Swollen lymph nodes
Tachycardia
Septicemia
Chest sounds
Skin eruptions
Leukopenia
Symptoms of Infectious Diseases
Chills
Pain and aching
Nausea
Fatigue/malaise
Headache
Sore throat
Chest tightness
Direct transmission
Takes place when there is contact with an infected person or body fluid that is carrying the pathogen
Indirect transmission
Occurs when there is an intermediate step between the portal of exit and portal of entry
Ex: Contact with a mosquito, pencil, or contaminated table
Portals of entry to host
Pathogens often enter a host via an open wound or through the mouth, nose, eye, intestines, urinary tract, or reproductive system.
Factors that make a host susceptible
Several variables make the human body—especially of a compromised patient—the ideal susceptible host.
Factors such as overall health, age, and the condition of a person’s immune system affect the chances of them becoming a host for a disease transmission.
Universal precautions
Precautions that apply when it is possible that one might come into contact with:
- Blood products (human)
- Human tissue
- Body fluids such as cerebrospinal fluid, amniotic fluid, and pleural fluid
- Any body fluid visibly contaminated with blood
- Vaginal secretions and semen
Regardless of the patients’ infection status.
Ex: human immunodeficiency virus (HIV) and the hepatitis B virus.
Standard Precautions
Minimum infection prevention practices that apply to all patient care, regardless of known infection status.
General Standard Precautions
General guidelines:
- Wash hands before and after every procedure.
- Use gloves with encountering patient blood/body fluids, handling anything contaminated with blood, performing venipuncture, handling blood specimens, and cleaning up body fluids or blood.
- Cover any scratches or breaks in the skin.
Refrain from eating, drinking, or chewing gum while working.
- Wear appropriate personal protective equipment (PPE) if blood or body fluid splatter could occur.
- Clean all spills immediately with appropriate cleaning supplies.
- Dispose of sharps immediately.
- Place sharps or broken glass in a puncture-proof container.
- Dispose of all biohazard waste in appropriate biohazard container.
3 categories for job tasks and the potential for exposure to blood borne pathogens
Category I: Tasks that have a chance of body fluids or blood spilling or splashing, or tasks that can cause exposure to blood or body fluids such as a minor surgical procedure
Category II: Tasks that do not usually involve chance of exposure, such as CPR; precautions must still be taken
Category III: Tasks that do not require any PPE, such as taking a patient’s vital signs
Personal protective equipment (PPE)
Gear worn when there is a chance of coming in contact with blood or body fluids. This helps reduce the risk of contact with blood or body fluids and helps break the cycle of infection.
Employers must provide PPE to all employees when there is a potential for exposure to blood or body fluids. It is the employee’s responsibility to use the PPE when contact with blood or body fluids is anticipated.
In the health care setting, this includes gloves, gowns/aprons, shoe covers, lab coats, masks and respirators, protective eyewear, and face shields.
Biohazard waste
Materials that present a potential or actual risk to the health of humans, animals, or the environment.
Needle Safety and Prevention Act
Signed into law in November 2000, which requires the institution of safety measures in workplaces where there is an occupational exposure to blood or other potentially infections materials.
- Health care professionals must implement the use of devices that help reduce the risk of needlestick injuries such as needle safety devices.
- Facilities must also maintain a detailed logbook of any needlestick or sharps injuries from dirty or contaminated sharps.
- Health care facilities must also implement work practice controls to help reduce the risk of injury at work by altering the way a task is performed.
Return to work guidelines
If a health care professional has a fever or feels sick, refrain from contact with patients to reduce the risk of spread.
Stay home and only return to work if the MA has been fever-free for at least 24 hours without the use of any fever-reducing medications.
Occupational Safety and Health Administration (OSHA)
Agency that creates regulations that employers must follow for employees to remain safe while working.
Transmission-based precautions
contact, droplet, and airborne precautions
Contact precautions
Transmission through direct and indirect touching
- using proper PPE such as gloves and gown, washing hands before and after working with the patient, and disinfecting the exam room are all precautions that should be taken.
Droplet precautions
Transmission by contact of secretions and usually occurs when an infected person coughs or sneezes
- get the patient to an exam room as quickly as possible, have the patient put on a face mask, and have the health care professional use appropriate PPE such as mask and gloves.
Airborne precautions
Transmission by infectious agents floating in the air, which can expose anyone around the patient
- allow the patient to enter the facility by a different route, place the patient in an isolation room, have the patient place a face mask on, and have the health care working use appropriate PPE such as mask, gloves, and gown.