module 5 Flashcards
how many people die in the us every year to medication errors?
100,000
in order to prepare for a medication administration, you need to do what 4 things?
- ) Be able to located the information about each drug,
- )consistently calculate drug dosages accurately
3) devise a method for consistently using Six Rights of medication
4) recognize the nursing implications for each drug administered.
nursing implications
points you nee to remember about the drug or teach to the patient
generic name
name not protected by trademark
trade name
name protected by a trademark like Advil
Classifications of a drug are defined by what?
by the effect of the drug on a body system
the symptoms the drug relieves
the drugs desired effects
ISMP, Institute for Safe Medication Practices
an organization devoted to safe medication practices and the prevention of errors
who can prescribe medications?
physicians, dentists, osteopaths, veterinarians
proof of use
is a record that accounts for each dose dispensed to the nursing unit.
5 standards that must be met by manufactures to admit drugs
purity- types and concentrations of substances other then the drug that can be in the tablet, capsule, suspension
potency - amount of active drug in the preparation contriuting to its strength
bioavailaility - drugs ability to dissolve, be absorbed, and e transported in the body to its desired site of actioin
efficacy- lab studies providing proof that the drug is effective for its intended use
safety - side effects, adverse effects, toxic reactions
what are drugs used for?
used in the treatment, palliation, diagnosis, cure, and prevention of disease/
barbiturates do what?
depress the function of cell groups in the central nervous system, causing drowsiness.
antineoplastic drugs do what?
have the ability to block cell division
the rate of absorption is affected by what ?
body weight, age, sex, disease conditions, genetic factors, immune mechanisms, and physiologic and emotional factors
why do infants display a lower tolerance for drugs then children?
the immaturity of organs needed to detoxify and excrete the drugs
how does weight effect the drug absorption?
an increase in body fat tens to delay rug distrubtion, the less a patient weighs, the more concentrated the drug will e in the tissues, and consquently the more powerful the effect.
degrade
break down of drugs
what happens when the liver function is decreased due to disease or aging?
the drug may be eliminate more slowly than usual, resulting in an accumulation of the drug that could lead to toxic levels
what is essential for the patient to eliminate drugs properly
adquate fluid intake of 50ml per day
pharmacodynamics
the study of drugs effect on cellular physiology and biochemistry and its mechanism of action
primary effect
is the desired effect
secondary effect
may be desirable or undesirable causing side effects or adverse effects
side effects
unintended actions
adverse effects an an example of one
undesirable effects with more serious consequences ; nausea produced by an antibiotic when its desired action is to kill pathogenic organisms or an allergic reaction such as hives
peak action
occurs when the highest blood of plasma concentration of the drug is achieved
what is the duration of action
the length of time the drug exerts a pharmacologic effect
peak
highest concentration
trough
lowest concentratio n
agonist
drugs that produce a response
antagonist
drugs that block a response
drugs have what 4 type of reactions
- stimulation or depression - direct action on a receptor site
- replacement- such as injected insulin for people who do not produce their own
- inhibition or killing - action of an antibiotic when it blocks synthesis of the bacterial cell wall
- irritation- such as that produced by a laxative on the colon wall, resulting in peristalsis and defecation.
anaphylaxis
severe allergic reaction; which could lead to death
therapeutic range
is the range of levels of the drug in the blood that will produce the desired effect without causing toxic effects.
toxic effects
harmful effects
black box warning
is an FDA warning designated to say the drug may have serious side effects
what can food do to affect the drug
it can speed up, reduce, or even prevent the absorption of the drug into the bloodstream
the acidic juices may affect what?
may affect the rate of breakdown of tablets an may prevent the drug from reaching the intestinal wall
doses are based on what for a chlld?
the child’s weight and age and are not given in a standardized amount
what do you say when giving a child medication?
explain it in short sentences with simple language at the child’s level of understanding what the drug is fo and how it is to be given
what can be caused from a decreased level of albumin in elderly?
it causes a greater potential for unbound drug in the system an a risk for increase drug activity and toxicity
what can happen to elderly when taking diuretics
they can become dehydrated and experience electroylte imbalances.
signs of toxicity
appetite loss, confusion, fatigue, and depression
reasons why patients show noncompliance
the patient may not comprehend the drugs action or why it is being taken, lack of money, in the male, urinary retention and sexual dysfunction are common reasons for noncompliance