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Pharmacology Basics
Pharmacology Basics
62
Pharmacology
Graduate
09/16/2015

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Term
Pharmacology
Definition
Study of drugs and their action on living organisms
Term
Herbal Medicine
Definition
herbal medicine
Term
drugs have several names assigned to them
Definition
chemical name
Term
Chemical Name (scienticfic name)
Definition
Gives the exact chemical makeup of the drug and placing of the atoms or molecular structure; the chemical name is not capitalized
Term
Generic Name (nonproprietary)
Definition
Name given to a drug before it becomes official; may be used in all countries
Term
Official Name
Definition
Name listed in The United States Pharmacopeia National Formulary; may be the same as the generic name
Term
Trade Name ( Brand Name)
Definition
Name that is registered by the manufacturer and is followed by the trademark symbol; the name can be used only by the manufacturer; a drug may have several trade names; depending on the number of manufacturers; the first letter of the trade name is capitalized
Term
once the drug is approved by the FDA it is assigned one of the following categories
Definition
prescription
Term
prescription drugs
Definition
designated by the federal government as potentially harmful unless their use is supervised by a licensed healthcare provider
Term
adverse reactions
Definition
undesirable drug effect
Term
toxic
Definition
harmful
Term
nonprescription drugs
Definition
designated by the FDA as safe (when taken as directed) and can be obtained without a prescription. Also referred to as OTC over the counter
Term
controlled substances
Definition
drugs that have the potential for abuse and dependency
Term
physical dependency
Definition
habitual use of a drug
Term
psychological dependency
Definition
is a compulsion or craving to use a substance to obtain a pleasurable experience; it is the mind's desire for the repeated administration of a drug.
Term
oral drugs go through three phases
Definition
pharmaceutic
Term
pharmaceutic phase
Definition
the drug dissolves. drugs must be soluable to be absorbed.
Term
Pharmacokinetics
Definition
Activities within the body after a drug is administered.
Term
Absorption
Definition
Follows administation & is the process by which a drug is made available for the body to use.
Term
Active Transport
Definition
Cellular energy is used to move the drug from an area of low concentration to one of high concentration.
Term
Passive Transport
Definition
No cellular energy is used to move from an area of high concentration to an area of low concentration (small molecules Diffuse across the cell membrane)
Term
Pinocytosis
Definition
Cells Engulf the drug particle.
Term
First Pass Effect
Definition
Action byte which an oral drug is absorbed and carried directly to the liver
Term
Distribution
Definition
The systemic circulation distributes drugs to various body tissues or target sites.
Term
Metabolism
Definition
also called "biotransformation"
Term
Metabolites may undergo further....
Definition
metabolism or may be excreted from the body unchanged.
Term
*Most drugs are metabolized by the liver although the kidneys
Definition
lungs
Term
Excretion
Definition
The elimination of drugs from the body called "excretion".
Term
* After the liver renders drugs inactive
Definition
the kidney excretes the inactive compounds from the body.
Term
Patients with kidney disease may require
Definition
a dosage reduction and careful monitoring of kidney function.
Term
Half-Life refers to
Definition
the time required for the body to eliminate 50% of the drug.
Term
Knowledge of the half-life of a drug is important
Definition
in planning the frequency of dosing.
Term
Example: drugs with a short half-life (2-4 hs) need to be administered frequently
Definition
drugs with a long half-life (21-24 hrs) requires less frequent administration.
Term
Three factors that are important when considering Pharmacokinectics
Definition
1. Onset of action 2. Peak concentration & 3. Duration of action
Term
Onset of action
Definition
time between administration of the drug and onset of its therapeutic effect.
Term
Peak Concentration
Definition
when absorption rate equals the elimination rate. (not always the time of peak response)
Term
Duration of action
Definition
length of time the drug produces a therapeutic effect.
Term
Pharmacodynamics
Definition
is the study of the drug mechanisms that produce biochemical or physiologic changes in the body.
Term
Receptor-Mediated Drug Action
Definition
Many drugs act through drug-receptor interaction.
Term
Agonist
Definition
is a drug that binds with a receptor and stimulates the receptor to produce a therapeutic response.
Term
Antagonist
Definition
is a drug that joins with receptors but does not stimulate the receptors. The therapeutic action in this case consists of blocking the receptor's function.
Term
Teratogen
Definition
is any substance that causes abnormal development of the fetus
Term
Adverse Drug Reactions
Definition
Patients may experience one or more adverse reactions or side effects when they are given a drug. Adverse reactions are undesirable dug effects. Adverse reactions may be common or may occur infrequently.
Term
An Allergic Reaction
Definition
is an immediate hypersensitivity reaction. Allergy to a drug usually begins to occur after more than one dose of the drug is given.
Term
Antigen
Definition
substance that is capable of inducing a specific immune response.
Term
Antibodies
Definition
When the body responds to the dug as an antigen a series of events occurs in an attempt to render the invader harmless. Lymphocytes respond by forming antibodies (protein substances that protect against antigens)
Term
Anaphylactic Shock
Definition
is an extremely serious allergic drug reaction that usually occurs shortly after the administration of a drug to which the individual is sensitive.
Term
Anaphylactic Shock Respiratory Symptoms
Definition
Bronchospasm * Dyspnea * Feeling of fullness in the throat * Cough * Wheezing
Term
Anaphylactic Shock Cardiovascular Symptoms
Definition
Extremely Low Blood Pressure * Tachycardia (heart rate >100bpm) * Palpitations * Syncope * Cardiac Arrest.
Term
Anaphylactic Shock Integumentary Symptoms
Definition
Urticaria (hives) * Angioedema * Pruritus (itching) * sweating
Term
Anaphylactic Shock Gastrointestinal Symptoms
Definition
Nausea * Vomiting * Abdominal Pain
Term
Angioedema
Definition
is another type of allergic drug reaction it is manifested by the collection of fluid in subcutaneous tissue. Areas most commonly affected are the eyelids
Term
Drug Idiosyncrasy
Definition
is a term used to describe any unusual or abnormal reaction to a drug
Term
Pharmacogentics
Definition
is the study of ways that specific genes can enhance sensitivity or resistance to certain drugs.
Term
Drug Tolerance
Definition
is a term used to describe a decreased response to a drug
Term
A Cumulative Drug Effect
Definition
may be seen in people with liver and kidney disease because these organs are the major sites for the breakdown and excretion of must drugs.
Term
A Cumulative Drug Effect Occurs
Definition
when the body is unable to metabolize and excrete one (normal) dose of a drug before the next dose is given
Term
Toxic Reactions
Definition
Most drugs can produce toxic or harmful reaction if administered in large dosages or when blood concentration levels exceed the therapeutic level.
Term
It is important for the nurse administering medications to aware of..
Definition
various drug interactions that can occur especially Drug-Drug Interactions and Drug-Food Interactions.
Term
Drug-Drug Interaction occurs
Definition
when one drug interacts with or interferes with the action of an of another drug.
Term
An Additive Drug Reaction occurs
Definition
when the combined effect of two drugs is equal to the sum of each drug given alone. For example
Term
Drug Synergism occurs
Definition
when drugs interact with each other and produce an effect that is greater than the sum of their separate actions.
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