Pharmacotherapeutics Exam 1 Flashcards
Pharmacology
the study of substances that interact with living systems through chemical processes
Toxicology
branch of pharmacology that deals with the undesirable effects of chemicals on living systems
Drug vs Medicine
Drug:
Substances which act on the body and are used for prevention, diagnosis and treatment
Medicine:
Substances that have definite form and therapeutic use for treatment
all drugs are not medicine
All medicines are drugs
Pharmacogenetics
using a persons genetic makeup to help guide drugs and their doses for a particular person
Pharmacodynamics vs Pharmacokinetics
Pharmacodynamics (PD)
Drug action and mechanism
Pharmacokinetics (PK)
Absorption, distribution, metabolism, excretion
Pharmacodynamics
What the drug does to the body
Drug action and mechanism
the biochemical and physiological effects of drugs on the body
the mechanisms of drug action in the body
the relationship between drug concentration and drug effect.
Pharmacokinetics
What the body does to the drug
Absorption, distribution, metabolism, excretion
the rate and extent to which drugs are absorbed into the body and distributed to the body tissues
the rate and pathways by which drugs are eliminated from the body by metabolism and excretion
the relationship between time and plasma drug concentration.
Targets for drug binding
Receptors
Ion channels
enzymes
transporters
factors that can affect responses to drugs
Drug interactions
Adherence to a drug regimen
Tolerance and resistance
Vomiting
DEA
The agency which controls the distribution of drugs that may be easily abused.
FDA
The leading enforcement agency at the federal level for regulations concerning drug products.
Controlled Substances Act of 1970
(CSA) established by US Congress, identifies 5 groups or schedules of drugs as controlled substances and put strict guidelines on their distribution.
Drug schedules
I-V
Schedule I being worst, no acceptable medical uses, high potential for abuse
Schedule V being best , low potential for abuse
Schedule I
Schedule I – High potential for abuse and no accepted medical use in the US.
Heroin, some opium derivatives, and hallucinogenic substances, Marijuana?
Schedule II
Schedule II – High potential for abuse and may lead to physical or psychological dependence, but also has a currently accepted medical use in the US.
Amphetamines, cocaine, methadone, and various opiates
Schedule III
Schedule III – Potential for abuse is less than those in Schedules I and II and there is a currently accepted medical use in the US, but abuse may lead to moderate or low physical dependence or high psychological dependence.
Anabolic steroids , compounds that contain codeine
Schedule IV
Schedule IV – Low potential for abuse relative to Schedule III and current accepted medical use in the US, but abuse may lead to limited physical dependence or psychological dependence.
Phenobarbital, sedative chloral hydrate, and some anesthetics
Schedule V
Schedule V – Low potential for abuse relative to Schedule IV and current accepted medical use in the US, but abuse may lead to limited physical dependence or psychological dependence.
Limited amounts of codeine included in this group
Exempt narcotics are in this group
Florida prescription monitoring program
Eforce
When must you have a written prescrition
Schedule II drugs require a written prescription
Schedule III - V may be oral or written (also fax)
How are medications assessed
Medications are assessed based on safety, efficacy, and cost-effectiveness
Efficacy
Efficacyis the capacity to produce an effect
maximum response that can be achieved by a drug
Effectiveness
Effectivenessdiffers from efficacy in that it takes into account how well a drug works in real-world use
maximum response achieves when the drug is taken exactly as prescribed
Drug Formulary
Drug formulary is a list of approved drugs that a health plan or a State/Territory, often has agreed to cover, and defines the prescription drug benefit
The purpose of using a drug formulary is to provide high-quality care using the most cost-effective medications. Typically, a drug formulary is developed by experts using clinical evidence.