2026 | Exam Prep
1. What is the definition of half-life in pharmacology?
The time required for the concentration of the drug in the plasma to
reduce by half.
The total time a drug remains active in the body.
The duration of action of a drug after administration.
The time it takes for a drug to be completely eliminated from the body.
2. Describe the significance of bioavailability in the context of drug absorption.
Bioavailability measures the effectiveness of a drug in treating a
specific condition.
Bioavailability is the process by which drugs are metabolized in the
liver.
Bioavailability indicates the time it takes for a drug to be eliminated
from the body.
Bioavailability is significant because it reflects how much of the drug
is available in the bloodstream to exert its therapeutic effects.
3. Describe how the concepts of clearance and bioavailability influence the
determination of a maintenance dose.
Clearance and bioavailability are only important for drugs with narrow
therapeutic indices.
Clearance determines the initial dose, while bioavailability is only a
concern for oral medications.
Clearance affects how quickly the drug is eliminated, while
bioavailability indicates how much of the drug reaches systemic
, circulation, both crucial for maintaining effective plasma levels.
Clearance is irrelevant, and bioavailability only affects initial dosing.
4. What is the primary characteristic of 1st order kinetics in drug elimination?
It is dependent on drug concentration.
It remains constant regardless of drug concentration.
It is influenced by patient metabolism only.
It occurs only at low drug levels.
5. What does pharmacodynamics specifically study in relation to medication
management?
The absorption of drugs in the bloodstream
The elimination of drugs from the body
The effects of drugs on the body
The chemical composition of drugs
6. Describe the significance of the term PRN in drug administration.
PRN means that a medication must be taken at regular intervals
throughout the day.
PRN refers to medications that are administered intravenously only.
PRN denotes a medication that is prescribed for long-term use.
PRN indicates that a medication should be taken only when
necessary, rather than on a fixed schedule.
7. A patient asks what the term half life means in regards to her medication.
Which response is correct?
, A medication's half life is how long it takes for the processes of
metabolism and excretion to eliminate half of the dose.
At half life, a medication's peak action has passed.
By the time of half life, the body will have absorbed all of the
medication.
A medication might still have some effectiveness when it is at half life.
8. Describe the significance of the volume of distribution in pharmacology.
It reflects the drug's potency and efficacy.
It indicates how extensively a drug disperses throughout body
tissues.
It measures the rate at which a drug is eliminated from the body.
It determines the drug's half-life in the bloodstream.
9. A nurse is preparing to administer a new medication to a patient with multiple
comorbidities. Which aspect of drug therapy should the nurse prioritize to
ensure safe administration?
Evaluating therapeutic effects
Pre-administration assessment
Dosage and administration
Minimizing adverse reactions
10. What is occurring in phase 1 metabolism of therapeutic drugs?
Conjugation to make drugs lipophilic
Conjugation to a different moiety
Elimination
, Chemical modification such as hydrolysis, oxidation, and reduction
11. Describe the importance of knowing early signs of adverse reactions in drug
therapy.
It helps in determining the drug's effectiveness.
Early signs are not important as all reactions are severe.
Knowing early signs of adverse reactions allows healthcare
providers to intervene promptly, reducing patient discomfort and
preventing serious harm.
It is only relevant for high-risk patients.
12. When would the loading dose be used?
It is used whenever convenient
After you have already had an initial dose
When a therapeutic conc. must be achieved rapidly
If the person has overshot and entered toxicity range
In general administration of a drug
13. What is one of the three basic goals of pre-administration assessment in
drug therapy?
Monitoring vital signs
Evaluating patient history
Determining drug interactions
Collecting baseline data