Chapters 10-14 Flashcards
Diseases that can be spread from one person to another
communicable diseases
Also called a microorganism, is a living thing that cannot be seen with the naked eye
microbe
Most microbes cause no harm and are actually essential for healthy living: called ____
normal (resident) flora
Some microbes, however, can cause illness and are known as _____
pathogens
Sometimes microbes can be considered normal flora in one part of the body and pathogens in another, these types of microbes are called _____
opportunistic microbes
When _____ finds its way out of the intestines and into another part of the body where it is not normal flora, such as the bladder, it can cause an infection
Escherichia coli
- bacteria
- viruses
- fungi
- parasites, helminths, protozoa
Are classifications of _____
microbes
_____ cause cause many of the infections you will encounter in the health care setting
-its ability to adapt to all sorts of environments is proof of this life forms ability to survive
bacteria
Scientist classify and name _____ in many different ways:
- by their shape
- by the way they arranged themselves in a colony
- by the way they stain (how they react to the dye to make them more visible)
bacteria
Although bacteria usually consist of only one cell, they often group together to form _____
colonies
Round bacteria are called _____
cocci
Rod shaped bacteria are called ____
bacilli
Spiral shaped or curved bacteria are called _____
sprilla
Pairs of bacteria indicated by the prefix _____
diplo-
Chains of bacteria indicated by the prefix _____
strepto-
Grape like clusters of bacteria indicated by the prefix ____
staphylo-
Need oxygen to live
aerobic
Die if oxygen is present
anaerobic
Some types of bacteria can surround themselves with a hard shell called _____, and enter a state of inactivity
-these types of bacteria are hard to kill using the standard techniques
endospores
Once the inactive bacteriums best growing conditions become available, the bacterium will become ____ again
active
- tetanus (lockjaw)
- botulism (food poisoning)
- strep throat
- some bladder infections
- some skin infections
- Rocky Mountain spotted fever
- typhus
- some types of pneumonia
- some infections of the reproductive and urinary systems
Are illnesses caused by _____
bacteria
Are the smallest of all microbes: ____
-can only be seen using a special kind of microscope called an ____
viruses
electron microscope
Many illnesses can be caused by ____ such as:
- common cold
- fever blisters
- chicken pox
- hepatitis
- AIDS
viruses
Are a group of plant like organisms that scientist have classified together because of certain characteristics, including the make up of their cell walls
fungi
Illnesses caused by ____:
- ringworm (tinea corporis)
- athletes foot (tinea pedis)
- thrush
- candidiasis
fungi
Live in or on a host such as a plant or animal and use that host for food and protection
parasites
Illnesses caused by ____
- scabies (mites)
- pediculosis (lice)
parasite
Other types of parasites:
- pinworms, tapeworms, roundworms are ____
- malaria caused by bite of mosquito, amebic dysentery is a type of diarrhea caused by drinking water are ____
helminths
protozoa
Many microbes share the earth with us, then why are we not always sick? The body has a defense system that protects us from infection called ____
immune system
Our main ______ is healthy, intact skin and mucous membranes
- skin that is without cuts, scrapes, or wounds physically prevents pathogens from entering the body
- mucous membranes line all of the organ systems that come in contact with the outside world (respiratory, digestive, urinary, and reproductive systems)
nonspecific defense mechanisms
Is a pathogen gets past the first line of defense and an infection results, the body activates a _____
-fever, inflammation, warmth, and redness at the site of infection: a normal response to infection
general immune response
The immune system also has the ability to develop specialized proteins called ____, which help our bodies to fight off specific microbes
antibodies
A person develops ____ following exposure to the microbe
_____ expose the body to the microbe, stimulating antibody production without causing actual illness
antibodies
vaccines
An ____ is a drug that is able to kill bacteria or make it difficult for them reproduce and grow
antibiotic
_____ first antibiotic used in WWII
penicillin
Resistant to one or more classes of antibiotics
- Methicillin-resistant Staphylococcus aureus (MRSA)
- Vancomycin-resistant enterococci (VRE)
Are easily spread from person to person via the hands
multidrug-resistant organisms (MDROs)
Some good bacteria are destroyed when using antibiotics to treat infections, resulting in infections
_____ major cause of health care associated diarrhea
Clostridium difficile (C. diff)
Although antibiotics have given us more options for treating infectious disease than we had in the past, they do not work against all pathogens all of the time
The best policy is clearly to _____ infection in the first place
infection
An illness caused by a pathogen
infection
Infections that can be easily transmitted from one person to another through casual contact
contagious
For a person to get a communicable infection, six key conditions muse be met
Theses six key elements are known as the _____
chain of infection
Eliminating any one of the six key elements breaks the chain and _____ the spread of infection
prevents
- pathogen
- reservoir
- portal of exit
- method of transmission
- portal of entry
- susceptible host
This is known as ____
chain of infection
A ____ is a place where something is stored
reservoir
Indirect transmission occurs when a noninfected person comes into contact with a non-living object that has been contaminated by pathogens, these objects are called _____
fomites
- very young: immune system not developed
- very old: immune system not as active with aging
- poor general health: body defenses already weak, certain medications and tx affect immune system
- stress and fatigue: lack of rest and emotional stress
- indwelling medical devices: increased risk of infections by providing a portal of entry
These are all ____
susceptible host
Infections people get while a pt or resident: ____
- health care worker can get while providing care
- also called ____
health care-associated infections (HAIs)
nosocomial infections
Most common method of transmission: ____
hands
All health care facilities follow basic practices that are designed to decrease the chance that an infection will be spread from one person to another, these practices are called ____
infection control
These are 4 major methods of _____:
- medical asepsis
- surgical asepsis
- barrier methods
- isolation precautions
infection control
____ involves physically removing or killing pathogens, and is primarily achieved through processes involving soap, water, antiseptics, disinfectants, or heat
- sanitization
- antisepsis
- disinfection
- sterilization
medical asepsis
_____ is the word we use to describe practices associated with basic cleanliness, such as:
- hand hygiene
- cleansing of eating materials and other surfaces with soap and water
- providing clean linings and clothing
- practices physically removing pathogens preventing their spread
sanitization
____ takes sanitation one step further by actually killing microbes or stopping then from growing
antisepsis
An ____ is a chemical that is capable of killing a pathogen, or preventing it from growing
-can be used on skin: rubbing alcohol, iodine, alcohol-based hand rub
antiseptic
____ involves the use of stronger chemicals to kill pathogens
- too strong to use on skin
- use on non-living objects
disinfection
____ most common thorough method of killing microbes
-used on objects that must be completely free of any microbe, such as surgical instruments, hypodermic needles, or intravenous (IV) catheters
-items are places in autoclave or soaked in chemicals
to destroy all microbes
-boiling is not an effective method
sterilization
_____ have several advantages:
- quicker than washing hands
- gentler on skin
- can be used anywhere
alcohol-based hand rubs
_____ used for procedures that involve entering a persons body
- surgical procedures
- injections
- insertion of IV catheter
- insertion of urinary catheter
surgical asepsis
A ____ is an object that physically prevents microbes from reaching a health care providers skin or mucous membranes
barrier
Barriers used in infection control, called ____ include:
- gloves
- gowns
- masks
- protective eyewear
personal protective equipment (PPE)
____ most common used barrier method
gloves
The most common error made by people who wear gloves is becoming too comfortable with the fact that they are protecting themselves, and forgetting to protect _____
others
A ____ should be used when it is likely that your uniform will be soiled with body fluids
gown (paper or fabric)
____ prevents you from breathing in microbes through your nose or mouth, and are worn when there is a chance that you will be exposed to pathogens that are transmitted through the air or in droplets of saliva
-____ are the most commonly used but in TB pts a special high filtration one is used
mask
surgical mask