Chamberlain NR 566 Midterm & Final Study Guide (2026)
– Pharmacology Chamberlain University College of Nursing
Complete A+ Guide with Rationales
Study Tips for NR 566 Midterm & Final Exam
Master pharmacokinetics and pharmacodynamics: Understand absorption, distribution,
metabolism, excretion, and how organ dysfunction affects drug therapy. Know CYP450 inducers
and inhibitors .
Know medication mechanisms of action: For each drug class, understand how the drug works at
the molecular level. This helps predict side effects and interactions .
Focus on cardiovascular pharmacology: ACE inhibitors, ARBs, beta-blockers, calcium channel
blockers, diuretics, anticoagulants, and antiplatelet agents are heavily tested .
Understand diabetes medications: Metformin, SGLT2 inhibitors, GLP-1 agonists, insulin, and their
cardiovascular/renal benefits. Know which agents are preferred in ASCVD, HF, and CKD .
Master psychiatric medications: SSRIs, SNRIs, antipsychotics (first vs second generation), mood
stabilizers (lithium, valproate), and benzodiazepines. Know side effect profiles and monitoring .
Know infectious disease antibiotics: Empiric therapy for CAP, UTI, SSTI. Understand MRSA
coverage, drug interactions, and monitoring requirements .
Remember black box warnings: Clozapine (agranulocytosis), lithium (toxicity), montelukast
(neuropsychiatric events), antidepressants (suicidality), and others .
Practice with case-based questions: Many questions present a patient scenario requiring
integration of diagnosis, medication selection, dosing considerations, and monitoring .
Section 1: Advanced Pharmacology Principles (Questions 1-30)
1. A patient with chronic kidney disease (eGFR 25 mL/min) is prescribed a
medication that is 80% renally excreted. What adjustment is most
appropriate?
A. Increase the dose by 50%
B. Decrease the dose or extend the dosing interval
C. No adjustment is needed
D. Administer the medication intravenously instead of orally
,Answer: B. Decrease the dose or extend the dosing interval
Rationale: For medications primarily eliminated by the kidneys, dose
reduction or extended dosing intervals are necessary in patients with
reduced eGFR to prevent drug accumulation and toxicity. The degree of
adjustment depends on the eGFR and drug characteristics .
2. A patient is prescribed a drug that is a CYP3A4 inhibitor. Which
medication would the nurse expect to have increased levels when co-
administered?
A. Simvastatin (Zocor)
B. Acetaminophen (Tylenol)
C. Metformin (Glucophage)
D. Lisinopril (Prinivil)
Answer: A. Simvastatin (Zocor)
Rationale: Simvastatin is a substrate of CYP3A4. When co-administered with
a CYP3A4 inhibitor, simvastatin levels increase, raising the risk of myopathy
and rhabdomyolysis. Many statins have significant CYP3A4 interactions .
3. A patient taking warfarin (Coumadin) is started on amiodarone. What
effect does the nurse anticipate?
A. Decreased INR, increased warfarin metabolism
B. Increased INR, increased bleeding risk
C. No change in INR
D. Decreased warfarin absorption
Answer: B. Increased INR, increased bleeding risk
Rationale: Amiodarone inhibits CYP2C9 and CYP1A2, which metabolize
warfarin. This interaction leads to increased INR and bleeding risk. Warfarin
dose should be reduced by 30-50% when amiodarone is initiated .
4. The nurse is educating a patient about the importance of medication
adherence. Which statement reflects the concept of pharmacotherapeutic
goals?
A. "You should take your medication only when you feel symptoms."
B. "The goal is to achieve maximum benefit with minimal harm."
,C. "All medications have the same therapeutic window."
D. "Side effects are not important to report."
Answer: B. "The goal is to achieve maximum benefit with minimal harm."
Rationale: The objective of drug therapy is to achieve maximum therapeutic
benefit while minimizing harm. Because no drug is ideal, clinicians must
balance efficacy with safety for each individual patient .
5. A drug with a narrow therapeutic index requires:
A. Less frequent monitoring
B. Therapeutic drug monitoring to maintain levels within a narrow range
C. Higher doses to achieve effect
D. No special monitoring
Answer: B. Therapeutic drug monitoring to maintain levels within a narrow
range
Rationale: Drugs with a narrow therapeutic index have a small margin of
safety between therapeutic and toxic doses. Therapeutic drug monitoring is
essential to maintain levels within the therapeutic range and prevent
toxicity. Examples include lithium, digoxin, warfarin, and phenytoin .
6. Which factor would decrease the absorption of an orally administered
drug?
A. Increased blood flow to the gastrointestinal tract
B. Administration on an empty stomach
C. The presence of food that binds the drug
D. Administration of a liquid formulation
Answer: C. The presence of food that binds the drug
Rationale: Food can decrease drug absorption by binding to the drug,
delaying gastric emptying, or altering gastric pH. Increased blood flow,
empty stomach, and liquid formulations typically enhance absorption .
7. A patient's serum albumin level is low. How will this affect the distribution
of a highly protein-bound drug?
A. Decreased free drug concentration
, B. Increased free drug concentration
C. No change in drug distribution
D. Decreased volume of distribution
Answer: B. Increased free drug concentration
Rationale: Low albumin levels mean fewer binding sites for protein-bound
drugs. This results in a higher concentration of free, pharmacologically
active drug, increasing both therapeutic effects and risk of toxicity .
8. The nurse explains to a patient that a loading dose is often used for certain
medications. What is the purpose of a loading dose?
A. To maintain therapeutic levels over a long period
B. To rapidly achieve therapeutic drug levels
C. To minimize side effects
D. To reduce the frequency of dosing
Answer: B. To rapidly achieve therapeutic drug levels
Rationale: A loading dose is a larger initial dose used to achieve therapeutic
levels quickly. Maintenance doses are then given to sustain those levels. This
is particularly important for drugs with long half-lives .
9. A patient asks why they need to take a medication every 12 hours. The
nurse explains that the dosing interval is based on which pharmacokinetic
principle?
A. Rate of absorption
B. Volume of distribution
C. Half-life
D. Protein binding
Answer: C. Half-life
Rationale: Dosing intervals are determined by drug half-life. Drugs with
shorter half-lives require more frequent dosing to maintain therapeutic
levels. Typically, dosing intervals are based on 1-2 times the half-life .
10. Which statement about drug metabolism is accurate?
A. Metabolism always results in inactivation of the drug
– Pharmacology Chamberlain University College of Nursing
Complete A+ Guide with Rationales
Study Tips for NR 566 Midterm & Final Exam
Master pharmacokinetics and pharmacodynamics: Understand absorption, distribution,
metabolism, excretion, and how organ dysfunction affects drug therapy. Know CYP450 inducers
and inhibitors .
Know medication mechanisms of action: For each drug class, understand how the drug works at
the molecular level. This helps predict side effects and interactions .
Focus on cardiovascular pharmacology: ACE inhibitors, ARBs, beta-blockers, calcium channel
blockers, diuretics, anticoagulants, and antiplatelet agents are heavily tested .
Understand diabetes medications: Metformin, SGLT2 inhibitors, GLP-1 agonists, insulin, and their
cardiovascular/renal benefits. Know which agents are preferred in ASCVD, HF, and CKD .
Master psychiatric medications: SSRIs, SNRIs, antipsychotics (first vs second generation), mood
stabilizers (lithium, valproate), and benzodiazepines. Know side effect profiles and monitoring .
Know infectious disease antibiotics: Empiric therapy for CAP, UTI, SSTI. Understand MRSA
coverage, drug interactions, and monitoring requirements .
Remember black box warnings: Clozapine (agranulocytosis), lithium (toxicity), montelukast
(neuropsychiatric events), antidepressants (suicidality), and others .
Practice with case-based questions: Many questions present a patient scenario requiring
integration of diagnosis, medication selection, dosing considerations, and monitoring .
Section 1: Advanced Pharmacology Principles (Questions 1-30)
1. A patient with chronic kidney disease (eGFR 25 mL/min) is prescribed a
medication that is 80% renally excreted. What adjustment is most
appropriate?
A. Increase the dose by 50%
B. Decrease the dose or extend the dosing interval
C. No adjustment is needed
D. Administer the medication intravenously instead of orally
,Answer: B. Decrease the dose or extend the dosing interval
Rationale: For medications primarily eliminated by the kidneys, dose
reduction or extended dosing intervals are necessary in patients with
reduced eGFR to prevent drug accumulation and toxicity. The degree of
adjustment depends on the eGFR and drug characteristics .
2. A patient is prescribed a drug that is a CYP3A4 inhibitor. Which
medication would the nurse expect to have increased levels when co-
administered?
A. Simvastatin (Zocor)
B. Acetaminophen (Tylenol)
C. Metformin (Glucophage)
D. Lisinopril (Prinivil)
Answer: A. Simvastatin (Zocor)
Rationale: Simvastatin is a substrate of CYP3A4. When co-administered with
a CYP3A4 inhibitor, simvastatin levels increase, raising the risk of myopathy
and rhabdomyolysis. Many statins have significant CYP3A4 interactions .
3. A patient taking warfarin (Coumadin) is started on amiodarone. What
effect does the nurse anticipate?
A. Decreased INR, increased warfarin metabolism
B. Increased INR, increased bleeding risk
C. No change in INR
D. Decreased warfarin absorption
Answer: B. Increased INR, increased bleeding risk
Rationale: Amiodarone inhibits CYP2C9 and CYP1A2, which metabolize
warfarin. This interaction leads to increased INR and bleeding risk. Warfarin
dose should be reduced by 30-50% when amiodarone is initiated .
4. The nurse is educating a patient about the importance of medication
adherence. Which statement reflects the concept of pharmacotherapeutic
goals?
A. "You should take your medication only when you feel symptoms."
B. "The goal is to achieve maximum benefit with minimal harm."
,C. "All medications have the same therapeutic window."
D. "Side effects are not important to report."
Answer: B. "The goal is to achieve maximum benefit with minimal harm."
Rationale: The objective of drug therapy is to achieve maximum therapeutic
benefit while minimizing harm. Because no drug is ideal, clinicians must
balance efficacy with safety for each individual patient .
5. A drug with a narrow therapeutic index requires:
A. Less frequent monitoring
B. Therapeutic drug monitoring to maintain levels within a narrow range
C. Higher doses to achieve effect
D. No special monitoring
Answer: B. Therapeutic drug monitoring to maintain levels within a narrow
range
Rationale: Drugs with a narrow therapeutic index have a small margin of
safety between therapeutic and toxic doses. Therapeutic drug monitoring is
essential to maintain levels within the therapeutic range and prevent
toxicity. Examples include lithium, digoxin, warfarin, and phenytoin .
6. Which factor would decrease the absorption of an orally administered
drug?
A. Increased blood flow to the gastrointestinal tract
B. Administration on an empty stomach
C. The presence of food that binds the drug
D. Administration of a liquid formulation
Answer: C. The presence of food that binds the drug
Rationale: Food can decrease drug absorption by binding to the drug,
delaying gastric emptying, or altering gastric pH. Increased blood flow,
empty stomach, and liquid formulations typically enhance absorption .
7. A patient's serum albumin level is low. How will this affect the distribution
of a highly protein-bound drug?
A. Decreased free drug concentration
, B. Increased free drug concentration
C. No change in drug distribution
D. Decreased volume of distribution
Answer: B. Increased free drug concentration
Rationale: Low albumin levels mean fewer binding sites for protein-bound
drugs. This results in a higher concentration of free, pharmacologically
active drug, increasing both therapeutic effects and risk of toxicity .
8. The nurse explains to a patient that a loading dose is often used for certain
medications. What is the purpose of a loading dose?
A. To maintain therapeutic levels over a long period
B. To rapidly achieve therapeutic drug levels
C. To minimize side effects
D. To reduce the frequency of dosing
Answer: B. To rapidly achieve therapeutic drug levels
Rationale: A loading dose is a larger initial dose used to achieve therapeutic
levels quickly. Maintenance doses are then given to sustain those levels. This
is particularly important for drugs with long half-lives .
9. A patient asks why they need to take a medication every 12 hours. The
nurse explains that the dosing interval is based on which pharmacokinetic
principle?
A. Rate of absorption
B. Volume of distribution
C. Half-life
D. Protein binding
Answer: C. Half-life
Rationale: Dosing intervals are determined by drug half-life. Drugs with
shorter half-lives require more frequent dosing to maintain therapeutic
levels. Typically, dosing intervals are based on 1-2 times the half-life .
10. Which statement about drug metabolism is accurate?
A. Metabolism always results in inactivation of the drug
