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120 Cards in this Set

  • Front
  • Back
Definition of Pharmacology
The study of drugs and their interactions with living systems
The 5 Rights of Drug Administration
*Right route
*Right dose
*Right patient
*Right time
*Right drug
6 things on the Medication Order
*Patient's name
*Date order was written
*Name of medication
*Dosage (including size, frequency, and # of doses)
*Route of delivery
*Signature of prescriber
How long does Dr have to sign medication order?
24 hours
Nursing diagnosis is...
the conclusion about patient's problems
Planning..
Sets out specific interventions directed at solving or preventing the problem(s) identified in the analysis
Implementation...
Consists of the initiation and completion of specific actions by the nurse. It is completed by observing and recording the outcomes of treatment.
The 3 times a medication label should be read...
*When the med is taken from the storage area.
*Just before removing it from the container.
*Upon returning the medication container to storage or prior to discarding the empty container.
Amount of time allowed to give medication...
1/2 hour before or after scheduled time.
Routes available...
*Oral
*Rectal
*Vaginal
*Parenteral (intradermal, sub q, intramuscular, intravenous)
*Enteral - absorbed through stomach or small intestine
*Topical
Angle degree for intradermal injection...
10-15
Angle degree for subcutaneous injection...
45
Angle degree for intramuscular injection...
90
Routes available for medication administration...
*Inhalation
*Transdermal (patch)
*Otic - ear
*Intrathecal - injection into subarachnoid space
*Epidural - injection into the epidural space
*Intraarticular - injection into the joint
Sublingual is...
under the tongue
Buccal is...
in the cheek
Insulin absorbs fastest in the ____, then the _____, then the _____.
abdomen, arm, leg
When documenting medication in a patient's chart, make sure to include..
*Patient's name
*Date and time of administration
*Name of the med, amount, and route
*Any adverse reactions experienced by the patient
*Any complications in administering the drug
*If the medication was not given, state why, and dispose of the drug
*Patient data such as VS
*Your name and title
Evaluation is....
performed to determine if the nursing interventions worked.
Drug
any chemical that affects the physiological processes of a living organism
Medication
any natural or synthetic substance intended to prevent, diagnose, treat, or cure a disease or other medical condition.
All medications are drugs,
but not all drugs are medications.
Therapeutic use...
to relieve symptoms
Diagnostic use...
to diagnose
Curative use....
kill or remove the causative agent of a disease. (Antibiotics)
Replacement use...
(Supplemental)
replace substances normally found in the body. (Synthroid)
Preventive or prophylactic use...
to ward off or lessen the severity of the disease. (HIV prophylactic)
Palliative therapy
make the patient as comfortable as possible.
Supportive therapy
maintains the integrity of body functions while the patient is recovering from illness or trauma.
Chemical name
describes the drug's chemical composition and molecular structure
Generic name
is the official name given a drug.
(nonproprietary name)
Trade name
brand name under which a company manufactures a generic drug.
(Proprietary name)
The patent life of a drug is usually ____ years long.
17
Plant sources:
Opium poppy plant
Ex. Morphine and Codeine
Animals:
Beef and Pork Pancreas:
Insulin
Urine of Pregnant Mares:
Premarin
Cow and Pigs:
Bovine or Porcine Heparin
Pharmacognosy
The study of the natural drug sources (animals and plants)
Physician's Desk Reference (PDR)
Reference book published by the pharmaceutical industry. Has a pictorial section for product identification. The PDR is updated annually.
1906 Pure Food and Drug Act
Established official standards and requirements for accurate labeling of drug products. First American law to regulate drugs.
1912 Sherley Amendment
Prohibited fraudulent claims of drug effectiveness.
1914 Harrison Narcotic Act
Established the legal term narcotic and regulated the manufacture and sale of habit-forming drugs.
1938 Federal Food, Drug, and Cosmetic Act
Regulates the manufacture, distribution, advertising, and labeling of drugs in an attempt to ensure safety and effectiveness.
*The first legislation to regulate drug safety.*
1962 Harris-Kefauver Amendments
Created in response to the thalidomide tragedy that occurred in Europe in the early 1960s.
Amendments to the Food, Drug, and Cosmetic Act
197 Comprehensive Drug Abuse Prevention and Control Act; Title II, Controlled Substance Act
Controls the manufacture, importation, compounding, selling, dealing in, and giving away drugs that have the potential for addiction and abuse.
Schedule I Drugs
Drugs that are NOT APPROVED for medical use and have high abuse potentials.
Can only be disspensed with approved protocol (research only).
Examples of Schedule I drugs
Heroin, LSD, Peyote, Marijuana
Schedule II Drugs
Drugs that are used medically and have high abuse potentials.
Must have written prescription only. No telephone orders. No refills and container must have warning label.
Examples of Schedule II Drugs
Codeine, cocaine, Meperidine, Morphine, Amphetamine, Oxycodone
Schedule III Drugs
Drugs that have a lower potential for abuse than schedule I and Schedule II drugs.
Prescriptions may be refilled up to 5 times. Refills must be made within 6 months of the original order.
Examples of Schedule III Drugs
Codeine with selected other meds (acetaminophen), Hydrocodone, anabolic steroids
Schedule IV Drugs
Drugs with some potential for abuse.
Prescriptions may be refilled up to 5 times. Refills must be made within 6 months of original order.
Examples of Schedule IV Drugs
Benzodiazepines, phenobarbital, propoxyphene
Schedule V Drugs
These products contain moderate amounts of controlled substances.
May be dispensed without a prescription provided certain conditions are met.
Examples of Schedule V Drugs
Lomotil, Cough syrup with codeine
Conditions that must be met for dispensing of Schedule V Drugs
*The drug is dispensed by pharmacist.
*The amount dispensed is very limited (Not to exceed 200 ml).
*The recipient is at least 18 yoa and can prove it.
Dependent intervention
Doctor ordered
Interdependent intervention
collaborative between different medical teams
Independent intervention
no doctor order needed
What type of insulin is only one molecule away from being identical to human insulin?
Porcine
Clinical Testing Phase I
Subjects: Normal volunteers
Tests: Metabolism and biological effects
Clinical Testing Phase II
Subjects: Patients w/problem
Tests: Therapeutic utility and dosage range
Clinical Testing Phase III
Subjects: Large number of patients
Tests: Safety and effectiveness
Blinded Investigational Drug Study
study subject does not know if drug or placebo give but researcher does.
Double-Blind Investigational Drug Study
Both researcher and study subject are "blinded" to actual identity of substance administered.
Clinical Testing Phase IV
Postmarketing Studies
Conducted by pharmaceutical companies to obtain further proof of the therapeutic effects of the new drug.
Drug companies gather information on a new drug for ___ years after it is realeased to consumers.
2
Pharmacokinetics
A particular drug's onset of action, peak effect, and duration of action are all characteristics defined by pharmacokinetics.
Also, the study of drug movement throughout the body. Includes the drug metabolism and drug excretion.
Absorption
the movement of a drug from its site of administration into the bloodstream for distribution to the tissues.
Onset of action
time required for the drug to elicit a therapeutic response.
Duration of action
length of time that drug concentration is sufficient to elicit a therapeutic response
Peak effect
time required for a drug to reach it's maximum therapeutic response
Bioavailability
a measure of the extent of drug absorption for given drug and route. (From o% - 100%)
First pass effect
the initial metabolism in the liver of a drug absorbed from the GI tract before the drug reaches system circulation through the blood stream
Distribution
refers to the transport of drug molecules within the body.
Depends on availability of blood supply,
1st to heart, liver, kidney, brain
Last to skin, muscle, fat
If less protein in vascular system
lower dose of drug given
P-450 Enzymes
in liver to help metabolize meds
Metabolism (Biotransformation)
the process by which the body inactivates drugs

The enzyme systems of the LIVER are the primary site for metabolism of drugs.
Excretion
the removal of drugs from the body.

The most important organ for drug excretion is the KIDNEY.
Most drugs are lipid soluble:
they can go across the cell membrane but are harder to excrete
Serum half-life
the amount of time required for 50% of the drug to be eliminated from the body

Takes 5 half-lifes to be efficiently removed from the body.

Determines rate of absorption, distribution, matabolism, and excretion.
Blood-Brain barrier
specialized cells in the brain capillaries allow only certain substances from the blood to enter the brain.

Drugs need to be lipid-soluble to get across or a transport system.
Dosage
the amount of drug that is to be given at one time
Initial Dose
the first dose
Average dose
the amount of drug proven most effective with minimum toxic effects
Factors for dosage
age, weight, disease processes, another disease, infection, past history, allergies, safest route to administer, least amount that can be given
Maintenance dose
the amount that will keep concentrations of the drug at a certain level in the patient's bloodstream
Maximum dose
the largest amount of medication that can be given safely to a patient
therapeutic dose
the amount needed to produce the desired effect
Unit dose
a premeasured amount of the medication, individually packaged on a per dose basis.
Lethal dose
amount of medication that could kill a patient
Drug-Drug Interactions
Additive Effects
occur when two drugs with similar pharmacological actions are taken.
Ex. aspirin + Oxycodone=increased analgesia
Drug-Drug Interactions
Synergistic Effects
occur when two drugs administered together interact in such a way that their combined effects are greater than the sum of the effects for each drug alone.
Drug-Drug Interactions
Interference
by one drug with metabolism or elimination of a second drug may result in intensified effects of the second drug.
Drug-Drug Interactions
Displacement
of one drug from plasma protein-binding sites by a second drug increases the effects of the displaced drug.
Ex. Aspirin + Warfarin=increased anticoagulant effect
Drug-Drug Interactions
Antagonistic effects
is a drug blocker. it is an interaction between drugs in which their effects are decreased
Polypharmacy
people who take multiple drugs a day
Pregnancy Safety Categories
Category A

*A-OK TO USE*
studies indicate no risk to human fetus
Pregnancy Safety Categories
Category B
studies indicate no risk to animal fetus, info for humans not available.
Pregnancy Safety Categories
Category C

*CAUTION*
adverse effects reported in animal fetus, info for humans not available.
Pregnancy Safety Categories
Category D

*DANGER*
possible fetal risks in humans reported; consideration of potential benefit vs. risk may warrant use of drug.
Pregnancy Safety Categories
Category X

*CROSS OFF - DON'T EVER USE!*
fetal abnormalities reported an positive evidence of fetal risk in humans.
Neonatal and Pediatric Considerations
Immaturity of organs = absorption: gastric emptying is slowed; intramuscular absorption is affected; distribution:protein binding is decreased.
Neonatal and Pediatric Considerations
Metabolizing enzymes are decreased. Glomerular filtration and tubular secretion are decreased.
Gastric acidity isn't same as adult's until child is ___ yoa.
2
Kidney function is not the same as an adult's until child is ___ yoa.
1
Adverse effects of drugs
GI Effects
anorexia, nausea, vomiting, diarrhea, constipation
Adverse effects of drugs
Hematologic effects
bleeding disorders, bone marrow depression, anemia
Adverse effects of drugs
Hepatotoxicity
hepatitis, hepatic necrosis
Adverse effects of drugs
Nephrotoxicity
renal insufficiency or failure
Adverse effects of drugs
Hypersensitivity or Allergic reaction
symptoms vary, may occur with any drug, unpredictable and unrelated to dose
Adverse effects of drugs
Anaphylactic shock
a life-threatening allergic reaction characterized by respiratory distress and cardiovascular collapse
Adverse effects of drugs
Idiosyncrasy
an unexpected reaction to a drug that occurs the first time it is given
Adverse effects of drugs
Drug dependence
may occur with any mind-altering drugs (narcotics, sedatives)
Adverse effects of drugs
Carcinogenicity
the ability of a substance to cause cancer
Adverse effects of drugs
Teratogenicity
the ability of a substance to cause abnormal fetal development when given to pregnant women.
Sources of Drugs
Plants
Ex. purple foxglove plant
Trade name: Digitalis

Ex. Poppy plant (opium)
Trade name: Morphine
Sources of Drugs
Minerals
Ex. Magnesium
Trade name: Milk of magnesia
Sources of Drugs
Animals
Ex. Pancreas of cow or hog
Trade name: insulin
Sources of Drugs
Syntehtic
Ex. Meperidine
Trade name: Demerol
Adverse Effects of Drugs
Tolerance
decreasing response to meds
Adverse Effects of Drugs
Cross-tolerance
phenomenon
Tolerant to one type of drug and being tolerant to another because it's the same class.