Test review Flashcards
Define bioavailability:
it is the percentage o administered dose that reaches systemic circulation
What are the factors that alter bioavailability?
- Route of administration
- changes in liver metabolism
- GI motility
- Food And Drugs
- Solubility
Define agonist:
Drug that binds with a receptor to produce the therapeutic effect
Antagonist:
Binds to receptor stronger than the agonist
What is adverse reaction?
Undesirable drug effect
Define allergic reaction:
A drug reaction that occurs because the individuals immune system views the drug as a foreign substance
Define Cumulative drug effect:
effect that occurs when the body has not fully metabolized a dose of the drug before the next dose is given
What is the pharmaceutic phase?
The dissolution of a drug. Breakdown of the tablet
Define Drug interaction:
When one drug interacts with or interferes with the action of another drug.
Define additive drug reaction
A reaction that occurs when the combined effect of two drugs is equal to the sum of each drug given alone.
Define synergism:
A drug interaction that occurs when drugs produce an effect that is greater than the sum of their separate actions.
Define antagonist reaction:
When one drug interferes with the other action of another, causing neutralization or decrease in the effects.
ex: protamine neutralizes heparin
Describe the 5 factors that influence a drug response
- Age
- Weight
- Gender
- Disease
- Route of Administration
What do you call a substance that may produce physical or functional defects in a human embryo or fetus?
Teratogen
How many pregnancy categories are there?
5 categories
What is the most frequent route of drug administration?
-the oral route
What are the 4 types of parenteral drug administration?
Subcutaneous
Intramuscular
Intravenous
Intradermal
Define subcutaneous
places the drug into the tissues between the skin and the muscle
Define intramuscular
places the medication directly into the muscle
Define intradermal
- typically used to administer sensitivity tests
- needle is inserted at a 15 degree angle placed between 1st and 2nd layer of skin
Barbiturate’s are what class of drug?
Sedatives and Hypnotics
Define barbiturates’
MOA: Suppress the sensory cortex
Use: Sedate, Stop tonic colonic seizures
**Do not use for prolonged period of time for insomnia
Ex: Phenobarbital
What are the 6 different types of classes of antidepressants?
- Tricyclic Antidepressants (TCAs)
- Monoamine Oxidase Inhibitors (MAOI)
- Selective Serotonin Reuptake Inhibitors (SSRI)
- Serotonin-norepinephrine Reuptake Inhibitors (SNRI)
- Serotonin Reuptake Inhibitor/Antagonist
- Dopamine/Norepinephrine Reuptake Inhibitor
TCA’s define the MOA, Use, Adverse effect, Contraindications, Examples
MOA: Increase level of norepinephrine and serotonin by inhibiting their reuptake; block acetylcholine
Use: Depressive symptoms, Anxiety, OCD
Adverse: Dry mouth, blurred vision, hypotension
Ex: Amitriptyline