NU150 | NU150 Pharmacology Exam 1 v3 |
Questions with Correct Answers and Expert
Explanation for Each Question | Galen
1. Which phase of the nursing process involves the nurse gathering data about the
patient’s current medications and allergies?
A. Implementation
B. Assessment
C. Diagnosis
D. Evaluation
Correct Answer: B
Expert Explanation: The assessment phase is the first step of the nursing process
where the nurse collects subjective and objective data. This includes obtaining a
complete medication history and identifying any known drug allergies to ensure
patient safety. Proper assessment is critical for preventing adverse drug reactions
and ensuring the appropriateness of therapy.
2. A drug with a high first-pass effect would most likely be administered through
which route to ensure efficacy?
A. Oral
B. Intravenous
,C. Sublingual
D. Rectal
Correct Answer: B
Expert Explanation: The first-pass effect refers to the metabolism of a drug by the
liver before it reaches systemic circulation, which happens primarily with oral
administration. Intravenous administration bypasses the liver initially, allowing the
full dose to reach the bloodstream. This ensures that the drug is not inactivated
before it can exert its therapeutic effect.
3. Which term describes the study of what the drug does to the body?
A. Pharmacodynamics
B. Pharmacotherapeutics
C. Pharmacokinetics
D. Pharmacogenomics
Correct Answer: A
Expert Explanation: Pharmacodynamics is the study of the biochemical and
physiological effects of drugs on the body. It explores how drugs interact with
receptors to produce a response. Understanding this concept helps nurses
anticipate the intended therapeutic effects and potential side effects of a medication.
,4. Which organ is primarily responsible for the metabolism of most drugs?
A. Kidneys
B. Lungs
C. Liver
D. Small Intestine
Correct Answer: C
Expert Explanation: The liver is the primary site for drug metabolism, utilizing
enzymes like the Cytochrome P450 system. Metabolism chemically transforms
drugs into metabolites that are easier for the body to excrete. If a patient has liver
dysfunction, they are at a higher risk for drug toxicity due to impaired metabolism.
5. A nurse is preparing to administer a Schedule II medication. What is a key
characteristic of this drug class?
A. It has a high potential for abuse but has accepted medical uses.
B. It has a low potential for abuse.
C. It has no accepted medical use.
D. It can be purchased over-the-counter without a prescription.
Correct Answer: A
, Expert Explanation: Schedule II drugs have a high potential for physical and
psychological dependence but are approved for medical treatment. Examples
include morphine, oxycodone, and methylphenidate. Because of the risk of abuse,
these medications are strictly regulated with specific requirements for prescriptions
and refills.
6. What is the term for the time it takes for one-half of the original amount of a drug
to be removed from the body?
A. Onset of action
B. Half-life
C. Duration of action
D. Peak level
Correct Answer: B
Expert Explanation: The half-life of a drug is a measure of the rate at which the
drug is eliminated from the body. It is used to determine the dosage frequency
needed to maintain a steady state of the medication in the bloodstream. A drug with
a short half-life requires more frequent dosing than a drug with a long half-life.
7. When two drugs with similar actions are taken together and the result is the sum of
their individual effects, it is called:
A. A synergistic effect
Questions with Correct Answers and Expert
Explanation for Each Question | Galen
1. Which phase of the nursing process involves the nurse gathering data about the
patient’s current medications and allergies?
A. Implementation
B. Assessment
C. Diagnosis
D. Evaluation
Correct Answer: B
Expert Explanation: The assessment phase is the first step of the nursing process
where the nurse collects subjective and objective data. This includes obtaining a
complete medication history and identifying any known drug allergies to ensure
patient safety. Proper assessment is critical for preventing adverse drug reactions
and ensuring the appropriateness of therapy.
2. A drug with a high first-pass effect would most likely be administered through
which route to ensure efficacy?
A. Oral
B. Intravenous
,C. Sublingual
D. Rectal
Correct Answer: B
Expert Explanation: The first-pass effect refers to the metabolism of a drug by the
liver before it reaches systemic circulation, which happens primarily with oral
administration. Intravenous administration bypasses the liver initially, allowing the
full dose to reach the bloodstream. This ensures that the drug is not inactivated
before it can exert its therapeutic effect.
3. Which term describes the study of what the drug does to the body?
A. Pharmacodynamics
B. Pharmacotherapeutics
C. Pharmacokinetics
D. Pharmacogenomics
Correct Answer: A
Expert Explanation: Pharmacodynamics is the study of the biochemical and
physiological effects of drugs on the body. It explores how drugs interact with
receptors to produce a response. Understanding this concept helps nurses
anticipate the intended therapeutic effects and potential side effects of a medication.
,4. Which organ is primarily responsible for the metabolism of most drugs?
A. Kidneys
B. Lungs
C. Liver
D. Small Intestine
Correct Answer: C
Expert Explanation: The liver is the primary site for drug metabolism, utilizing
enzymes like the Cytochrome P450 system. Metabolism chemically transforms
drugs into metabolites that are easier for the body to excrete. If a patient has liver
dysfunction, they are at a higher risk for drug toxicity due to impaired metabolism.
5. A nurse is preparing to administer a Schedule II medication. What is a key
characteristic of this drug class?
A. It has a high potential for abuse but has accepted medical uses.
B. It has a low potential for abuse.
C. It has no accepted medical use.
D. It can be purchased over-the-counter without a prescription.
Correct Answer: A
, Expert Explanation: Schedule II drugs have a high potential for physical and
psychological dependence but are approved for medical treatment. Examples
include morphine, oxycodone, and methylphenidate. Because of the risk of abuse,
these medications are strictly regulated with specific requirements for prescriptions
and refills.
6. What is the term for the time it takes for one-half of the original amount of a drug
to be removed from the body?
A. Onset of action
B. Half-life
C. Duration of action
D. Peak level
Correct Answer: B
Expert Explanation: The half-life of a drug is a measure of the rate at which the
drug is eliminated from the body. It is used to determine the dosage frequency
needed to maintain a steady state of the medication in the bloodstream. A drug with
a short half-life requires more frequent dosing than a drug with a long half-life.
7. When two drugs with similar actions are taken together and the result is the sum of
their individual effects, it is called:
A. A synergistic effect
