Final Flashcards
Produced by physicians (drug caused disease, dispensing/administration)
Iatrogenic Disease
Uncommon drug response resulting from genetic predisposition. (we dont know they occur until they happen)
Idiosyncratic Effect
birth defects/ ability to produce birth defects.
teratogenic
unavoidable secondary drug effect produced by a therapeutic dose
side effects
any severe advanced drug action regardless of dose
toxicity
the study of the biochemical and physiological effects of drugs on the body
pharmacodynamics
the study of the absorption, distribution, metabolism, and excretion of drugs
pharmacokinetics
the study of drugs and their interactions with living organisms
pharmacology
the use of drugs in the treatment and prevention of disease or conditions (also called therapeutics)
pharmacotherapy
List the FDA Drug Schedule: I-V
I: has no medicinal value/very addictive, highest risk for abuse (–>meth, LSD)
II: tightly regulated, some medicinal value,high risk for abuse (addicted)–>cocaine, morphine, oxycodone
V: Medicinal value, non-addictive–>cough syrup
New drugs must undergo testing for toxicity reviewed by the FDA (1938). In 1970, the _______ states that drugs with potential for abuse must be tightly regulated, hence the drug schedule.
controlled substance act
Phases of Drug Trials in Clinical Testing:
Phase I?
normal volunteers (ex: nursing students, pharmacy students). Tests metabolism and biologic effects.
Phases of Drug Trials in Clinical Testing:
Phase II?
Testing in patients (ex: HTN and take 10 mg and take BP and Tomorrow take 20 mg and take BP, etc).
Tests Therapeutic utility and dosage range.
Phases of Drug Trials in Clinical Testing:
Phase III?
Application for New Drug Application (big trials, randomized controls, blinded, the real deal, 5-40 thousand people).
Tests safety and effectiveness.
Conditional approval of New Drug Status is…
New Drug Status
Phases of Drug Trials in Clinical Testing:
Phase IV?
Post marketing surveillance (still under investigation—still on “trial”).
HCP’s evaluate closely and report finding because they are still under investigation. RN’s and Pharmacists need to monitor these.
A numerical parameter that indicates extent of drug distribution in the body. The higher the number, the more penetration outside the vascular system moving into tissues. Give example.
Volume of Distribution
Ex: 12 liters and we give Digoxin, ionic penetration– goes to heart tissue– large volume of distribution. Check the serum plasma level– its not there– it took off and went into system.
Factors that affect the volume of distribution:
albumin primary protein. Higher protein binding–>lower Volume of distribution
plasma protein binding
Factors that affect the volume of distribution:
Lipid soluble pass membranes easily.
solubility
Factors that affect the volume of distribution:
lipid soluble, non-ionized, small size, non-protein bound– pass easier
placental transfer
Factors that affect the volume of distribution:
Drugs which are lipid soluble and have a transport system pass easier. Non-polar, Non-ionized penetrate blood brain barrier. Keeps toxic substances out but very difficult to get drugs in there too.
blood brain barrier
Define Drug Half-life.
T 1/2 time required for amount of drug in the body to decline by 50%
Explain Longer Dosing Interval.
Dosing interval corresponds to T 1/2 longer T1/2.
The longer the half life, the longer the dosing interval.
Ex. Morphine 1/2 life every 3 hrs wears down. Warfarin has 1/2 life of 24 hrs, so take it daily.
Decreased responsiveness to a drug as a result of repeated drug administration.
Tolerance