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140 Cards in this Set
- Front
- Back
Chemical used to diagnose, treat, or prevent disease.
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Drug
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The study of drugs and their interactions with the body.
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Pharmacology
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Drug Names
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- Chemical name
- Generic name - Official name - Brand name |
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Sources of Drug Information
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- United States Pharmacopeia (USP)
- Physician's Desk Reference - Drug Information - Monthly Prescribing Reference - AMA Drug Evaluation |
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Components of a Drug Profile
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- Names
- Classification - Mechanism of Action - Indications - Pharmacokinetics - Side Effects/Adverse Reactions - Routes of Administration - Contraindications - Dosage - How Supplied - Special Considerations |
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Drug Laws and Regulations
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- Federal law
- State laws and regulations - Individual agency regulations |
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Schedule I
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High abuse potential; may lead to severe dependence; no accepted medical indications; used for research, analysis, or instruction only (Heroin, LSD, mescaline)
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Schedule II
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High abuse potential; may lead to severe dependence; accepted medical indications (Examples: Opium, cocaine, morphine, codeine, oxycodone, methadone, secobarbital)
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Schedule III
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Less abuse potential than Schedule I and II; may lead to moderate or low physical dependence or high psychological dependence; accepted medical indications (Examples: Limited opioid amounts or combined with noncontrolled substances: Vicodin, Tylenol with codeine)
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Schedule IV
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Low abuse potential compared to Schedule III; limited limited psychological and/or physical dependence; accepted medical indications (Diaepam, lorazepam, phenobarbital)
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Schedule V
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Lower abuse potential compared to Schedule IV; may lead to limited physical or psychological dependence; accepted medical indications (Examples: Limited amounts of opioids; often for cough or diarrhea)
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4 Main Sources of Drugs
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- Plants
- Animals - Minerals - Laboratory (synthetic) |
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Test that determines the amount and purity of a given chemical in a preparation in the laboratory
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Assay
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Relative therapeutic effectiveness of chemically equivalent drugs
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Bioequivalence
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Test to ascertain a drug's availability in a biological model
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Bioassay
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Six Rights of Medication Administration
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- Right medication
- Right dose - Right time - Right route - Right patient - Right documentation |
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Medication packages contain a single dose for a single patient
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Dose packaging
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Special Considerations
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- Pregnant patients
- Pediatric patients - Geriatric patients |
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Medication that may deform or kill the fetus
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Teratogenic drug
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Proportion of a drug available in the body to cause either desired or undesired effects
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Free drug availability
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FDA Pregnancy Category A
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Adequate studies in pregnant women have not demonstrated a risk to the fetus in the first trimester or later trimesters.
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FDA Pregnancy Category B
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Animal studies have not demonstrated a risk to the fetus, but there are no adequate studies in pregnant women.
OR Adequate studies in pregnant women have not demonstrated a risk to the fetus in the first trimester and there is no risk in the last trimester, but animal studies have demonstrated adverse effects. |
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FDA Pregnancy Category C
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Animal studies have demonstrated adverse effects, but there are no adequate studies in pregnant women; however, benefits may be acceptable despite the potential risks.
OR No adequate animal studies or adequate studies of pregnant women have been done. |
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FDA Pregnancy Category D
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Fetal risk has been demonstrated. In certain circumstances, benefits could outweigh the risks.
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FDA Pregnancy Category X
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Fetal risk has been demonstrated. This risk outweighs any possible benefit to the mother. Avoid using in pregnant or potentially pregnant patients.
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How a drug is absorbed, distributed, metabolized (biotransformed), and excreted; how drugs are transported into and out of the body.
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Pharmacokinetics
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How a drug interacts with the body to cause its effects
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Pharmacodynamics
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Requires the use of energy to move a substance
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Active transport
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Process in which carrier proteins transport large molecules across the cell membrane
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Carrier-mediated diffusion
or facilitated diffusion |
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Movement of a substance without the use of energy
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Passive transport
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Movement of solute in a solution from an area of higher concentration to an area of lower concentration
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Diffusion
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Movement of solvent in a solution from an area of lower solute concentration to an area of higher solute concentration
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Osmosis
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Movement of molecules across a membrane from a higher pressure to an area of lower pressure
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Filtration
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Pharmacokinetic Processes
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- Absorption
- Distribution - Biotransformation - Elimination |
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To become electrically charged or polar
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Ionize
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Amount of a drug that is still active after it reaches its target tissue
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Bioavailability
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Tight junctions of the capillary endothelial cells in the central nervous system vasculature through which only non-protein-bound, highly lipid-soluble drugs can pass
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Blood-brain barrier
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Biochemical barrier at the maternal/fetal interface that restricts certain molecules
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Placental barrier
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The body's breaking down chemicals into different chemicals
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Metabolism
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Special name given to the metabolism of drugs
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Biotransformation
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Medication that is not active when administered, but whose biotransformation converts it into active metabolites
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Prodrug (parent drug)
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The liver's partial or complete inactivation of a drug before it reaches the systemic circulation
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First-pass effect
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The loss of hydrogen atoms or the acceptance of an oxygen atom. This increases the positive charge (or lessens the negative charge) on the molecule
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Oxidation
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The breakage of a chemical bond by adding water or by incorporating a hydroxyl (OH-) group into one fragment and a hydrogen ion (H+) into the other
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Hydrolysis
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Drug Routes
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- Enteral
- Parenteral |
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Delivery of a medication through the gastrointestinal tract
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Enteral route
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Delivery of a medication outside of the gastrointestinal tract, typically using needles to inject medications into the circulatory system or tissues
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Parenteral route
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Enteral routes
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- Oral (PO)
- Orogastric/nasogastric tube (OG/NG) - Sublingual (SL) - Buccal - Rectal (PR) |
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Parenteral routes
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- Intravenous (IV)
- Endotracheal (ET) - Intraosseous (IO) - Umbilical - Intramuscular (IM) - Subcutaneous (SC, SQ, SubQ) - Inhalation/Nebulized - Topical - Transdermal - Nasal - Instillation - Intradermal |
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Solid drug forms
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- Pills
- Powders - Tablets - Suppositories - Capules |
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Liquid drug forms
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- Solutions
- Tinctures - Suspensions - Emulsions - Spirits - Elixirs - Syrups |
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Types of Drug Actions
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- Binding to a receptor site (PRIMARY)
- Changing the physical properties of cells - Chemically combining with other chemicals - Altering a normal metabolic pathway |
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Specialized protein that combines with a drug resulting in a biochemical effect
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Receptor
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Force of attraction between a drug and an receptor
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Affinity
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A drug's ability to cause the expected response
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Efficacy
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Chemical that participates in complex cascading reactions that eventually cause a drug's desired effect
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Second messenger
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Binding of a drug or hormone to a target cell receptor that causes the number of receptors to decrease
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Down-regulation
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A drug causes the formation of more receptors than normal
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Up-regulation
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Drug that binds to a receptor and causes it ti initiate the expected response
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Agonist
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Drug that binds to a receptor but does not cause it to initiate the expected response
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Antagonist
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Drug that binds to a receptor and stimulates some of its effects but blocks others
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Agonist-antagonist (partial agonist)
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One drug binds to a receptor and causes the expected effect while also blocking another drug from triggering the same receptor
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Competitive antagonism
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The binding of an antagonist causes a deformity of the binding site that prevents an agonist from fitting and binding
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Noncompetitive antagonism
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A competitive antagonist permanently binds with a receptor site
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Irreversible antagonism
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Unintended response to a drug
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Side effect
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Correlation of different amounts of a drug to clinical response
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Drug-response relationship
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Describes the lengths of onset, duration, and termination of action, as well as the drug's minimum effective concentration and toxic levels
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Plasma-level profile
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The time from administration until a medication reaches its minimum effective concentration
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Onset of action
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Minimum level of drug needed to cause a given effect
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Minimum effective concentration
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Length of time the amount of drug remains above its minimum effective concentration
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Duration of action
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Time from when the drug's level drops below its minimum effective concentration until it is eliminated from the body
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Termination of action
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Ratio of a drug's lethal dose for 50 percent of the population to its effective dose for 50 percent of the population
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Therapeutic index
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Time the body takes to clear one half of a drug
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Biologic half-life
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Factors affecting drug-response relationship
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- Age
- Body mass - Sex - Environment - Time of adminitration - Pathology - Genetics - Psychology |
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Drug that best demonstrates the class's common properties and illustrates its particular characteristics
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Prototype
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Medication that relieves the sensation of pain
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Analgesic
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The absence of the sensation of pain
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Analgesia
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The absence of all sensations
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Anesthesia
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Agent that enhances the effects of other drugs
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Adjunct medication
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Medication that induces a loss of sensation to touch or pain
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Anesthetic
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Anesthesia that combines decreased sensation of pain with amnesia while the patient remains conscious
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Neuroleptanesthesia
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State of decreased anxiety and inhibitions
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Sedation
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Instigation of sleep
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Hypnosis
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Drug used to treat mental dysfunction
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Psychotherapeutic medication
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Major Diseases Treated with Psychotherapeutic Medications
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- Schizophrenia
- Depression - Bipolar disorder |
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Common side effects of antipsychotic medications, including muscle temors and parkinsonism-like effects
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Extrapyramidal symptoms (EPS)
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Antipsychotic (literally, affecting the nerves)
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Neuroleptic
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Major Classes of Antipsychotic Medications
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- Phenathiazines
- Butyrophenpnes - Atypicals |
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Major Classes of Antidepressant Medications
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- TCAs
- SSRIs - MAOIs |
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The part of the nervous system that controls involuntary actions
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Autonomic nervous system
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Group of autonomic nerve cells located outside the central nervous system
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Autonomic ganglia
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Nerve fibers that extend from the central nervous system to the autonomic ganglia
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Preganglionic nerves
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Nerve fibers that extend form the autonomic ganglia to the target tissues
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Postganglionic nerves
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Space between nerve cells
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Synapse
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Specialized synapse between a nerve cell and the organ or tissue it innervates
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Neuroeffector junction
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Chemical messenger that conducts a nervous impulse across a synapse
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Neurotransmitter
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Nerve cell
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Neuron
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Pertaining to the neurotransmitter acetylcholine
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Cholinergic
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Pertaining to the neurotransmitter norepinephrine
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Adrenergic
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Cranial Nerves Carrying Parasympathetic Fibers
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- III
- VII - IX - X |
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Drug or other substance that causes effects like those of the parasympathetic nervous system (also called cholinergic)
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Parasympathomimetic
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Drug or other substance that blocks or inhibits the actions of the parasympathetic nervous system (also called anticholinergic)
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Parasympatholytic
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Sludge Effects of Cholinergic Medications
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- Salivation
- Lacrimation - Urination - Defecation - Gastric motility - Emesis |
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Types of Parasympathetic Acetylcholine Receptors
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- Muscarinic
- Nicotinic +Nicotinic^N (neuron) +Nicotinic^M (muscle) |
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Effects of Atropine Overdose
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- Hot as hell
- Blind as a bat - Dry as a bone - Red as a beet - Mad as a hatter |
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Types of Sympathetic Receptors
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- Adrenergic
= alpha 1 = alpha 2 = beta 1 = beta 2 - Dopaminergic |
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Drug or other substance that causes effects like those of the sympathetic nervous system (also called adrenergic)
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Sympathomimetic
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Drug or other substance that blocks the actions of the sympathetic nervous system (also called antiadrenergic)
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Sympatholytic
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Common Catecholamines
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- Natural
= Epinephrine = Norepinephrine = Dopamine - Synthetic = Isoproterenol = Dobutamine |
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Drug used to treat and prevent abnormal cardiac rhythms
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Antidysrhythmic
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Antidysrhythmics
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Antidysrhythmics are routinely classified in the Vaughn-Williams and Singh Classification System.
- I: Na+ channel blockers = 1A = 1B = 1C - II: Beta-blockers - III: K+ channel blockers - IV: Ca++ channel blockers - Miscellaneous |
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Drug used to treat hypertension
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Antihypertensive
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Pharmacological Classes of Antihypertensives
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- Diuretics
- Beta-blockers and antiadrenergic drugs - ACE inhibitors - Calcium channel blockers - Direct vasodilators |
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Drug used to reduce circulating blood volume by increasing the amount of urine
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Diuretic
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The stoppage of bleeding
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Hemostasis
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Drugs Used to Treat Thrombi (Hemostatic Agents)
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- Antiplatelets
- Anticoagulants - Fibrinolytics |
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Drug that decreases the formation of platelet plugs
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Antiplatelet
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Drug that interrupts the clotting cascade
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Anticoagulant
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Drug that acts directly on thrombi to break them down; also called thrombolytic
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Fibrinolytic
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Drug used to treat high blood cholesterol
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Antihyperlipidemic
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Mediator released from mast cells upon contact with allergens
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Leukotriene
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Medication that arrests the effects of histamine by blocking its receptors
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Antihistamine
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An endogenous substance that affects a wide variety of organ systems
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Histamine
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Medication that suppresses the stimulus to cough in the central nervous system
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Antitussive
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Medication intended to increase the productivity of cough
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Expectorant
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Medication intended to make mucus more watery
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Mucolytic
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Main Indications for Gastrointestinal Drug Therapy
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- Peptic ulcers
- Constipation - Diarrhea and emesis - Digestion |
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Alkalotic compound used to increase the gastric environment's pH
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Antacid
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Medication used to decrease stool's firmness and increase its water content
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Laxative
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Categories of Laxatives
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- Bulk-forming
- Stimulant - Osmotic - Surfactant |
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Substance that decreases surface tension
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Surfactant
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Medication used to prevent vomiting
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Antiemetic
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Substance that decreases blood glucose level
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Insulin
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Substance that increases blood glucose level
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Glucagon
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Drug used to treat cancer
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Antineoplastic agent
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Agent that kills or decreases the growth of bacteria
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Antibiotic
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Disease-causing organism
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Pathogen
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The body's ability to respond to the presence of a pathogen
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Immunity
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Solution containing whole antibodies for a specific pathogen
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Serum
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Solution containing a modified pathogen that does not actually cause disease but still stimulates the development of antibodies specific to it
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Vaccine
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