Questions and Answers
What is pharmacology?
The study of drugs and their action on living organisms.
What does disintegration refer to in pharmacology?
The breakdown of a tablet into smaller particles.
What is the purpose of a drug?
A natural or artificial substance given to treat or prevent disease.
Define pharmacotherapeutics.
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What does pharmacokinetics involve?
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What is pharmacognosy?
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Critical concentration is the amount of drug needed to cause a therapeutic ______.
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What does half-life refer to in pharmacology?
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Food in the stomach always speeds up drug absorption.
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Name two factors affecting drug absorption.
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Study Notes
Introduction to Pharmacology
- Pharmacology involves the study of drugs and their effects on living organisms, focusing on the biological effects of chemicals.
- Essential for nurses to understand pharmacologic principles for safe and accurate medication administration.
Drug Definition
- Drugs are substances (natural or artificial) used to treat or prevent diseases and induce changes in the body.
- Chemicals administered to alter bodily functions.
Pharmacotherapeutics
- A branch of pharmacology focusing on the application of drugs to diagnose, treat, and prevent diseases.
- Examines the body's response to drugs (pharmacodynamics) and drug effects on the body (pharmacokinetics).
Pharmacokinetics
- Studies the movement of drugs through the body, comprising absorption, distribution, metabolism, and excretion.
- Critical concentration refers to the therapeutic level of a drug needed for effectiveness.
Pharmacognosy
- The study of natural drug sources, including plant and animal origins.
Excipient Function
- Excipient materials are used in drug formulation to achieve specific sizes, shapes, and enhancement of drug dissolution.
Routes of Absorption
- Absorption is the process from drug entry into the body until it reaches the bloodstream.
- Influencing factors include dosage form, route of administration, blood flow, gastrointestinal function, and food presence.
Half-Life Concept
- Half-life is the duration for the drug's concentration in the body to reduce by half.
- Example: A drug with a half-life of 2 hours taken at 20 mg results in:
- 10 mg after 2 hours,
- 5 mg after 4 hours,
- 2.5 mg after 6 hours.
Additional Absorption Insights
- Food can slow drug absorption within the gastrointestinal tract.
- Water-soluble and lipid-soluble drugs influence absorption rates based on their penetrative capabilities.
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Description
Explore the fundamentals of pharmacology essential for nursing practice in this quiz for BSN 2C students. Understand the actions and effects of medications and the principles necessary for safe drug administration. This assessment is designed to reinforce the critical knowledge required for effective patient care.
