Pharmacotherapeutics - ️️Use of drugs to alleviate the signs and symptoms of disease,
delay disease progression, cure disease, or facilitate non drug interventions.
Whenever a drug is used, the benefits of its use should be greater than the risks of side
effects.
All aspects of a drug must ...
NSG 320: Exam 1-Questions with Correct Answers/ Verified/ Latest
Update 2024/2025
Pharmacotherapeutics - ✔️✔️Use of drugs to alleviate the signs and symptoms of disease,
delay disease progression, cure disease, or facilitate non drug interventions.
Whenever a drug is used, the benefits of its use should be greater than the risks of side
effects.
All aspects of a drug must be considered.
Properties of an ideal drug - ✔️✔️Effectiveness
Safety
Selectivity
Reversible action, predictability, ease of administration, freedom from drug interactions, low
cost, chemical stability, simple generic name.
Drug Classifications - ✔️✔️Over the counter
Prescription
Drug Names - ✔️✔️Chemical
Generic *
Trade (Brand)
Pharmacokinetics - ✔️✔️What the body does to drugs
The process by which a drug is absorbed, distributed, metabolized, and eliminated by the
body.
Pharmacodynamics - ✔️✔️What drugs do to the body
The interactions of a drug and the receptors responsible for its actions in the body.
Absorption - ✔️✔️The movement of a drug from site of administration to the blood to the
blood.
, Rate of absorption determines how soon effects will begin. Amount of absorption determines
how intense effects will be.
Bioavailability - ✔️✔️Ability of a drug to be absorbed. Involves factors such as tablet
disintegration, enteric coating, sustained-release preparations etc.
Factors that affect absorption - ✔️✔️Administration route
Dissolution
Blood flow
Lipid solubility
Surface area
Enteral - ✔️✔️"via the gut"
Oral (PO) low cost, easy to use , interactions Rectal (PR)
Parenteral - ✔️✔️"outside the gut"
Intravenous (IV) fast, large volume, increased infection
Intramuscular (IM) small volume, painful
Subcutaneous (SC) little volume
Others: topical, vaginal, intranasal, inhaled
chemically equivalent - ✔️✔️drug preparations are considered ______ if they contain the
same amount of the identical drug
bioavailability - ✔️✔️preparations are considered equal in ______ if the drug they contain is
absorbed at the same rate and to the same extent
Distribution - ✔️✔️The movement of drugs in bloodstream throughout body to site of action
Mostly determined by amount of blood flow to tissues.
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