Pharacological Principles Vocab Flashcards
Drug interactions in which the effect of a combination of two or more drugs with similar actions is greater than the sum of the individual a fax of the same drugs given alone.
Synergistic effects
Example 1+1= greater than 2
If two drugs are taken together that are similar in action, such as barbiturates and alcohol, which are both depressants, an effect exaggerated out of proportion to that of each drug taken separately at the given dose may occur. This could be expressed by 1+1= 5. An example might be a person taking a dose of alcohol and a dose of a barbiturate. Normally, taken alone, neither substance would cause serious harm, but if taken together, the combination could cause coma or death.
Drug interactions in which the effect of a combination of two or more drugs with similar actions is equivalent to the sum of the individual effects of the same drugs given alone.
Additive effects
Example 1+1=2
Additive effect is the term used when two or more drugs are taken at the same time and the action of one plus the action of the other results in an action as if just one drug had been given. This could be represented by 1+1= 2. An example would be a barbiturate and a tranquilizer given together before surgery to relax the patient.
Drug interactions in which the effect of a combination of two or more drugs is less than the sum of the individual effects of the same drugs given alone; it is usually caused by an antagonizing (blocking or reducing) effect of one drug on another
Antagonistic effects
Example 1+1= less than 2
Antagonism is action in which two drugs given together will have an opposite effect on the body. This could be expressed by 1+1=0. An example might be the use of a tranquilizer to stop the action of LSD. Some stimulants will counteract the effects of depressants and thus are used to treat overdoses of barbiturates and narcotics.
Any undesirable occurrence related to administering or failing to administer prescribed medication.
Adverse drug event
A general term for any undesirable effects that are a direct response to one or more drugs
Adverse effects
Any unexpected, unintended, undesired, or excessive response to a medication given at therapeutic dosages (as opposed to overdose)
Adverse drug reaction
A drug that binds to and stimulates the activity of one or more receptors in the body
Agonist
An immunologic hypersensitivity reaction resulting from the unusual sensitivity of a patient to a particular medication; a type of adverse drug event
Allergic reaction
A measure of the extent of drug absorption for a given drug and route from 0% to 100%
Bioavailability
The length of time the concentration of a drug in the blood or tissues is sufficient to elicit a response
Duration of action
Protein molecules that catalyze one or more of a variety of biochemical reactions, including those related to the body’s own physiological processes as well as those related to drug metabolism
Enzymes
The initial metabolism in the liver of a drug absorbed from the gastrointestinal tract before the drug reaches systemic circulation through the bloodstream
First pass effect
The name given to a drug by the United States adopted names counsel. Also called the non-proprietary name, much shorter and simpler than the chemical name and is not protected by trademark
Generic name
In pharmacokinetics, the time required for half of an administered dose of drug to be eliminated by the body, or the time it takes for the blood level of a drug to be reduced by 50%
Half-life
An abnormal an unexpected response to a medication, other than allergic reaction, that is peculiar to an individual patient
Idiosyncratic reaction
The characteristic that causes two parenteral drugs or solutions to undergo a reaction when mixed or given together that results in the chemical deterioration of at least one of the drugs
Incompatibility
Within a joint
Intra-articular