Chapter 3 Book Flashcards
Reaches widespread areas of the body.
Systemic effect.
limited to the area of the body where it is administered
Local effect.
Passage of a substance through a membrane into the bloodstream
Absorption.
Moving from the bloodstream into the tissues and fluids of the body
Distribution.
Physical and chemical alterations that the substance undergoes in the body
Metabolism.
Eliminating waste products of drug metabolism from the body
Excretion.
Incorrect administration may destroy the drug before it reaches the bloodstream or its site of action (e.. giving certain antibiotics after meals «instead of on an empty stomach)
Absorption
Poor circulation (impaired flow of blood) may prevent the drug from reaching tissues where it is to have its desired effect.
Distribution
Hepatitis, cirrhosis of the liver, or a damaged liver may prevent adequate breakdown of the drug, thus causing a build-up or accumulation of unmetabolized drug.
Metabolism
Renal damage or kidney failure may prevent passage of drug waste products, thereby causing an accumulation of the drug in the body
Excretion
inactive substance that resembles a medication, although no drug : is present.
placebo
The action of two drugs working together in which one helps the ocher simultaneously for an effect that neither could produce alone.
Synergism.
The action of two drugs in which one prolongs or multiplies the effect of the other. Drug A may be said to potentiate the effect of drug B. This interaction is often used in pain medications.
Potentiation.
The action of two drugs in which one prolongs or multiplies the effect of the other. Drug A may be said to potentiate the effect of drug B. This interaction is often used in pain medications.
Potentiation.
The opposing action of two drugs in which one decreases or cancels out the effect of the other.
Antagonism
is defined as the amount of a drug given for a particular therapeutic or desired effect.
Dosage
Smallest amount of a drug that will produce a therapeutic effect.
Minimum dose.
Largest amount of a drug that will produce a desired effect without producing symptoms of toxicity.
Maximum dose.