Chapter 1 General Principles Flashcards
absorption
a drug is moved from the site of administration to body fluids(1st process during pharmocokinetics)
adverse reaction
undesirable drug effect
allergic reaction
hypersensitive reaction by the immune system, it presents as itching, hives, swelling, and difficulty breathing
anaphylactic/anaphylactoid shock/reaction
sudden, severe hypersensitivity reaction with symptoms that progress rapidly and can result in death
angloedema
localized wheals or swellings in subcutaneous tissue or mucous membranes, which can be caused by an allergic response
bioavailability
the proportion of a drug available to body tissues when it reaches the circulator system
controlled substances
drugs that have the potential for abuse and dependency, both physical and psychological
cumulative drug effect
when the body is unable to metabolize and excrete one dose of a drug before the next is given
complementary/alternative medicine(CAM)
group of diverse medical practices or products not presently part of conventional medicine
distribution
drug moves from circulation to body tissues or target site
drug idiosyncrasy
any unusual or abnormal response that differs from the response normally expected to a specific drug and dosage
drug tolerance
decreased response to a drug requiring an increase in dosage to achieve the desired effect
excretion
elimination of a drug from the body
first-pass effect
action by which an oral drug is absorbed and carried directly to the liver, where it is inactivated by the enzymes before it enters the general bloodstream
half-life
time required for the body to eliminate 50% of a drug
herbal medicine/herbalism
type of CAM therapy that uses plants or herbs to treat various disorders
hypersensitive
undesirable reaction produced by a normal immune system
metabolism
drug is changed to a form that can be excreted
metabolite
inactive form of the original drug
nonprescription drugs(over-the-counter)
drugs designated by the FDA to be safe and obtainable without a prescription
pharmaceutic
pertaining to the phase during which a drug dissolves into the body
pharmacodynamics
study of the drug mechanisms that produce biochemical or physiologic changes in the body
pharmacokinetics
study of drug transit or activity after administration
physical dependency
habitual use of a drug, where negative physical withdrawal symptoms result from abrupt discontinuation