1|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1 EXAM 2026–
2027 LATEST UPDATE | COMPREHENSIVE PRACTICE QUESTIONS,
DETAILED ANSWER EXPLANATIONS, COMPLETE STUDY REVIEW &
EXAM PREPARATION GUIDE PDF
Exam Coverage Summary:
This exam covers foundational principles of pharmacology including drug properties, pharmacodynamics,
pharmacokinetics, the nursing process in drug therapy, drug legislation, drug interactions, adverse effects, and
special considerations across the lifespan (pediatrics, pregnancy, and geriatrics). It also includes questions on the
autonomic nervous system, cholinergic and adrenergic pharmacology, and neuromuscular blockers.
1. A patient's blood pressure is significantly reduced by a new drug, but the patient also experiences a severe,
lifethreatening allergic reaction. Which property of an ideal drug is this medication lacking?
A. Effectiveness
B. Safety
C. Selectivity
D. Reversibility
Rationale: Safety is a key property of an ideal drug, meaning it should not cause harmful effects, even when
given in high doses over a long period. A severe allergic reaction indicates a lack of safety, as the drug is causing
significant harm.
,2|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
2. A nurse is reviewing a patient's medication history and notes a drug that has a very high therapeutic index. What
is the primary clinical significance of this property?
A. It has a narrow margin of safety and requires close monitoring.
B. It is highly selective for its intended receptor.
C. It is relatively safe, as the effective dose is much lower than the lethal dose.
D. It has a rapid onset of action and is shortacting.
Rationale: A high therapeutic index indicates a wide margin between the effective dose and the toxic dose,
making the drug relatively safe. A low therapeutic index means the doses for therapeutic and toxic effects are close,
requiring close monitoring.
3. The nurse is preparing to administer an intravenous medication. Which action is the highest priority to ensure
patient safety?
A. Verify the patient's allergy status.
B. Check the IV site for patency and infiltration.
C. Administer the drug over at least 60 seconds.
D. Confirm the drug's compatibility with the IV solution.
Rationale: While all actions are important, assessing for drug allergies is a critical initial step to prevent a
potentially fatal anaphylactic reaction, which is the most immediate and severe threat to patient safety.
4. A patient is receiving a drug that is known to undergo significant firstpass metabolism. How does this affect the
drug's bioavailability when given orally?
A. Bioavailability is increased due to enhanced absorption.
,3|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
B. Bioavailability is decreased because the drug is metabolized by the liver before reaching systemic
circulation.
C. Bioavailability is unchanged as this process does not affect oral drugs.
D. Bioavailability is increased because the drug is more rapidly excreted.
Rationale: Firstpass effect refers to the rapid hepatic inactivation of a drug absorbed from the GI tract before it
enters the systemic circulation, significantly reducing its oral bioavailability.
5. The nurse is providing discharge teaching to a patient prescribed an entericcoated tablet. Which instruction is
most important?
A. "Chew the tablet thoroughly for faster absorption."
B. "Crush the tablet and mix it with applesauce if you have trouble swallowing."
C. "Swallow the tablet whole and do not crush or chew it."
D. "Take the tablet with a full glass of milk to protect your stomach."
Rationale: Enteric coating protects the drug from stomach acid and prevents gastric irritation. Crushing or
chewing destroys this coating, potentially leading to drug inactivation or severe stomach upset.
6. The nurse is administering a drug that acts as an antagonist at a specific receptor site. What is the expected effect
of this drug?
A. It will enhance the body's natural response at that receptor.
B. It will produce a maximal response, similar to the endogenous ligand.
C. It will block the receptor and prevent its activation by an agonist.
D. It will have no effect, as it does not bind to any receptors.
, 4|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
Rationale: An antagonist binds to a receptor and prevents it from being activated by an agonist, thereby blocking
the physiological response. An agonist activates the receptor.
7. A patient has been taking a drug for several weeks for chronic pain. The nurse notes that the patient now requires
a higher dose to achieve the same level of pain relief. This phenomenon is best described as:
A. Drug toxicity
B. An adverse drug reaction
C. Pharmacodynamic tolerance
D. A drugdrug interaction
Rationale: Pharmacodynamic tolerance occurs when a patient requires a higher dose of a drug to produce the
same effect over time. It is a decrease in the drug's effect at its receptor site.
8. The nurse is reviewing the lab results of a patient taking atorvastatin for high cholesterol. Which lab value is
most critical for monitoring the drug's primary adverse effect?
A. Serum creatinine
B. Aspartate aminotransferase (AST)
C. Complete blood count (CBC)
D. Serum potassium
Rationale: Atorvastatin can cause hepatotoxicity. Liver function tests like AST and ALT should be monitored. An
elevated AST indicates potential liver damage.
EXAM---
CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1 EXAM 2026–
2027 LATEST UPDATE | COMPREHENSIVE PRACTICE QUESTIONS,
DETAILED ANSWER EXPLANATIONS, COMPLETE STUDY REVIEW &
EXAM PREPARATION GUIDE PDF
Exam Coverage Summary:
This exam covers foundational principles of pharmacology including drug properties, pharmacodynamics,
pharmacokinetics, the nursing process in drug therapy, drug legislation, drug interactions, adverse effects, and
special considerations across the lifespan (pediatrics, pregnancy, and geriatrics). It also includes questions on the
autonomic nervous system, cholinergic and adrenergic pharmacology, and neuromuscular blockers.
1. A patient's blood pressure is significantly reduced by a new drug, but the patient also experiences a severe,
lifethreatening allergic reaction. Which property of an ideal drug is this medication lacking?
A. Effectiveness
B. Safety
C. Selectivity
D. Reversibility
Rationale: Safety is a key property of an ideal drug, meaning it should not cause harmful effects, even when
given in high doses over a long period. A severe allergic reaction indicates a lack of safety, as the drug is causing
significant harm.
,2|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
2. A nurse is reviewing a patient's medication history and notes a drug that has a very high therapeutic index. What
is the primary clinical significance of this property?
A. It has a narrow margin of safety and requires close monitoring.
B. It is highly selective for its intended receptor.
C. It is relatively safe, as the effective dose is much lower than the lethal dose.
D. It has a rapid onset of action and is shortacting.
Rationale: A high therapeutic index indicates a wide margin between the effective dose and the toxic dose,
making the drug relatively safe. A low therapeutic index means the doses for therapeutic and toxic effects are close,
requiring close monitoring.
3. The nurse is preparing to administer an intravenous medication. Which action is the highest priority to ensure
patient safety?
A. Verify the patient's allergy status.
B. Check the IV site for patency and infiltration.
C. Administer the drug over at least 60 seconds.
D. Confirm the drug's compatibility with the IV solution.
Rationale: While all actions are important, assessing for drug allergies is a critical initial step to prevent a
potentially fatal anaphylactic reaction, which is the most immediate and severe threat to patient safety.
4. A patient is receiving a drug that is known to undergo significant firstpass metabolism. How does this affect the
drug's bioavailability when given orally?
A. Bioavailability is increased due to enhanced absorption.
,3|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
B. Bioavailability is decreased because the drug is metabolized by the liver before reaching systemic
circulation.
C. Bioavailability is unchanged as this process does not affect oral drugs.
D. Bioavailability is increased because the drug is more rapidly excreted.
Rationale: Firstpass effect refers to the rapid hepatic inactivation of a drug absorbed from the GI tract before it
enters the systemic circulation, significantly reducing its oral bioavailability.
5. The nurse is providing discharge teaching to a patient prescribed an entericcoated tablet. Which instruction is
most important?
A. "Chew the tablet thoroughly for faster absorption."
B. "Crush the tablet and mix it with applesauce if you have trouble swallowing."
C. "Swallow the tablet whole and do not crush or chew it."
D. "Take the tablet with a full glass of milk to protect your stomach."
Rationale: Enteric coating protects the drug from stomach acid and prevents gastric irritation. Crushing or
chewing destroys this coating, potentially leading to drug inactivation or severe stomach upset.
6. The nurse is administering a drug that acts as an antagonist at a specific receptor site. What is the expected effect
of this drug?
A. It will enhance the body's natural response at that receptor.
B. It will produce a maximal response, similar to the endogenous ligand.
C. It will block the receptor and prevent its activation by an agonist.
D. It will have no effect, as it does not bind to any receptors.
, 4|Page--- CHAMBERLAIN COLLEGE OF NURSING NU 578 UNIT 1
EXAM---
Rationale: An antagonist binds to a receptor and prevents it from being activated by an agonist, thereby blocking
the physiological response. An agonist activates the receptor.
7. A patient has been taking a drug for several weeks for chronic pain. The nurse notes that the patient now requires
a higher dose to achieve the same level of pain relief. This phenomenon is best described as:
A. Drug toxicity
B. An adverse drug reaction
C. Pharmacodynamic tolerance
D. A drugdrug interaction
Rationale: Pharmacodynamic tolerance occurs when a patient requires a higher dose of a drug to produce the
same effect over time. It is a decrease in the drug's effect at its receptor site.
8. The nurse is reviewing the lab results of a patient taking atorvastatin for high cholesterol. Which lab value is
most critical for monitoring the drug's primary adverse effect?
A. Serum creatinine
B. Aspartate aminotransferase (AST)
C. Complete blood count (CBC)
D. Serum potassium
Rationale: Atorvastatin can cause hepatotoxicity. Liver function tests like AST and ALT should be monitored. An
elevated AST indicates potential liver damage.
