NR566 Advanced Pharmacology for Care
of the Family Week 4 Midterm
Examination (2026 Curriculum)
Unit 1: Foundational Principles & Pharmacokinetics
1. A patient with chronic kidney disease (CKD) has an eGFR of 28 mL/min. Which
pharmacokinetic process is most significantly impaired, requiring empirical dosage
adjustment?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
*Rationale: Excretion, primarily renal filtration and secretion, is directly dependent on GFR.
Accumulation of renally cleared drugs (e.g., gabapentin, metformin, lithium) occurs
when eGFR falls below 30 mL/min, necessitating dose reduction to prevent toxicity .*
2. A drug follows first-order kinetics. Which statement best describes this
elimination process?
A. A constant amount of the drug is eliminated per unit of time.
B. A constant fraction (percentage) of the drug is eliminated per unit of time.
C. Elimination is dependent on drug concentration only after receptor saturation.
D. Elimination is independent of drug concentration (zero-order).
*Rationale: First-order kinetics describes non-saturable elimination where a constant
proportion of the drug is cleared over time (e.g., 50% per half-life). Zero-order kinetics
(e.g., phenytoin, high-dose alcohol) describes constant amount elimination .*
3. A patient develops an anaphylactic reaction to intravenous penicillin. This is
classified as which type of adverse drug reaction?
A. Type A (Augmented)
,B. Type B (Bizarre)
C. Type C (Chronic)
D. Type D (Delayed)
Rationale: Type B reactions are idiosyncratic, unpredictable, immunologically mediated
reactions not related to the drug's primary pharmacology. They are dose-independent and
include anaphylaxis, Steven-Johnson Syndrome, and rashes .
4. A patient taking Warfarin is started on Amiodarone for atrial fibrillation. What
is the most critical drug interaction to monitor?
A. Increased risk of Torsades de Pointes due to additive QT prolongation.
B. Significant increase in INR and bleeding risk.
C. Decreased absorption of Amiodarone.
D. Antagonism of Warfarin effect leading to thrombosis.
*Rationale: Amiodarone is a potent inhibitor of CYP2C9 and CYP1A2, the isoenzymes
responsible for metabolizing warfarin. This interaction typically requires a 30-50%
reduction in warfarin dose to prevent life-threatening bleeding .*
5. A drug has a high volume of distribution (Vd > 500 L). This indicates the drug is:
A. Highly bound to serum albumin (confined to vascular space).
B. Highly water-soluble.
C. Extensively sequestered into peripheral tissues (e.g., fat or muscle).
D. Largely excreted unchanged by the kidneys.
Rationale: A high Vd (exceeding total body water of 42L) indicates the drug leaves the
plasma compartment and concentrates in tissue compartments. Digoxin and tricyclic
antidepressants are classic examples .
Unit 2: Cardiovascular & Lipid Pharmacotherapy
6. A 58-year-old male with Heart Failure with reduced Ejection Fraction (HFrEF, EF
30%) is stable on Lisinopril. What is the BEST next agent to add to reduce
mortality?
A. Hydrochlorothiazide
B. Metoprolol Succinate
C. Amlodipine
D. Hydralazine
, Rationale: Beta-blockers (Carvedilol, Metoprolol Succinate, Bisoprolol) are cornerstone
mortality-reducing therapies in HFrEF. They must be started at low doses and titrated
slowly to prevent acute decompensation .
7. A 65-year-old female with known ASCVD (prior MI) has an LDL of 110 mg/dL
despite lifestyle changes. According to the 2018 ACC/AHA guidelines, what
intensity statin is required?
A. Low-intensity statin (e.g., Simvastatin 10 mg)
B. Moderate-intensity statin (e.g., Atorvastatin 10 mg)
C. High-intensity statin (e.g., Atorvastatin 80 mg or Rosuvastatin 40 mg)
D. No statin is indicated if LDL is < 130 mg/dL.
*Rationale: Secondary prevention (known ASCVD) mandates high-intensity statin therapy
to achieve ≥ 50% LDL reduction, regardless of baseline LDL levels .*
8. A patient on Warfarin for a mechanical mitral valve presents with an INR of 4.8.
They deny any bleeding. What is the appropriate management?
A. Administer Vitamin K 10 mg orally immediately.
B. Hold the next dose of warfarin and recheck INR in 1-2 days.
C. Administer Fresh Frozen Plasma (FFP).
D. Increase the warfarin dose to achieve therapeutic range.
*Rationale: For an asymptomatic INR between 4.0 and 5.0, holding the next dose(s) is
standard. Vitamin K is generally reserved for INRs > 10 or signs of bleeding to avoid
over-correction and hypercoagulability in mechanical valve patients .*
9. Which electrolyte imbalance places a patient on Digoxin at the highest risk for
fatal cardiac arrhythmias (ventricular tachycardia)?
A. Hypernatremia (Na > 155)
B. Hypokalemia (K < 3.5)
C. Hypercalcemia (Ca > 10.5)
D. Hypermagnesemia (Mg > 2.5)
Rationale: Hypokalemia increases the binding of digoxin to the sodium-potassium ATPase
pump, drastically increasing the risk of digoxin toxicity and dysrhythmias. Diuretics (loop
and thiazide) are common culprits for causing hypokalemia .
10. A 72-year-old male with Benign Prostatic Hyperplasia (BPH) and hypertension
is started on Doxazosin. What adverse effect is most critical to prevent during the
first dose?
A. Reflex tachycardia
of the Family Week 4 Midterm
Examination (2026 Curriculum)
Unit 1: Foundational Principles & Pharmacokinetics
1. A patient with chronic kidney disease (CKD) has an eGFR of 28 mL/min. Which
pharmacokinetic process is most significantly impaired, requiring empirical dosage
adjustment?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
*Rationale: Excretion, primarily renal filtration and secretion, is directly dependent on GFR.
Accumulation of renally cleared drugs (e.g., gabapentin, metformin, lithium) occurs
when eGFR falls below 30 mL/min, necessitating dose reduction to prevent toxicity .*
2. A drug follows first-order kinetics. Which statement best describes this
elimination process?
A. A constant amount of the drug is eliminated per unit of time.
B. A constant fraction (percentage) of the drug is eliminated per unit of time.
C. Elimination is dependent on drug concentration only after receptor saturation.
D. Elimination is independent of drug concentration (zero-order).
*Rationale: First-order kinetics describes non-saturable elimination where a constant
proportion of the drug is cleared over time (e.g., 50% per half-life). Zero-order kinetics
(e.g., phenytoin, high-dose alcohol) describes constant amount elimination .*
3. A patient develops an anaphylactic reaction to intravenous penicillin. This is
classified as which type of adverse drug reaction?
A. Type A (Augmented)
,B. Type B (Bizarre)
C. Type C (Chronic)
D. Type D (Delayed)
Rationale: Type B reactions are idiosyncratic, unpredictable, immunologically mediated
reactions not related to the drug's primary pharmacology. They are dose-independent and
include anaphylaxis, Steven-Johnson Syndrome, and rashes .
4. A patient taking Warfarin is started on Amiodarone for atrial fibrillation. What
is the most critical drug interaction to monitor?
A. Increased risk of Torsades de Pointes due to additive QT prolongation.
B. Significant increase in INR and bleeding risk.
C. Decreased absorption of Amiodarone.
D. Antagonism of Warfarin effect leading to thrombosis.
*Rationale: Amiodarone is a potent inhibitor of CYP2C9 and CYP1A2, the isoenzymes
responsible for metabolizing warfarin. This interaction typically requires a 30-50%
reduction in warfarin dose to prevent life-threatening bleeding .*
5. A drug has a high volume of distribution (Vd > 500 L). This indicates the drug is:
A. Highly bound to serum albumin (confined to vascular space).
B. Highly water-soluble.
C. Extensively sequestered into peripheral tissues (e.g., fat or muscle).
D. Largely excreted unchanged by the kidneys.
Rationale: A high Vd (exceeding total body water of 42L) indicates the drug leaves the
plasma compartment and concentrates in tissue compartments. Digoxin and tricyclic
antidepressants are classic examples .
Unit 2: Cardiovascular & Lipid Pharmacotherapy
6. A 58-year-old male with Heart Failure with reduced Ejection Fraction (HFrEF, EF
30%) is stable on Lisinopril. What is the BEST next agent to add to reduce
mortality?
A. Hydrochlorothiazide
B. Metoprolol Succinate
C. Amlodipine
D. Hydralazine
, Rationale: Beta-blockers (Carvedilol, Metoprolol Succinate, Bisoprolol) are cornerstone
mortality-reducing therapies in HFrEF. They must be started at low doses and titrated
slowly to prevent acute decompensation .
7. A 65-year-old female with known ASCVD (prior MI) has an LDL of 110 mg/dL
despite lifestyle changes. According to the 2018 ACC/AHA guidelines, what
intensity statin is required?
A. Low-intensity statin (e.g., Simvastatin 10 mg)
B. Moderate-intensity statin (e.g., Atorvastatin 10 mg)
C. High-intensity statin (e.g., Atorvastatin 80 mg or Rosuvastatin 40 mg)
D. No statin is indicated if LDL is < 130 mg/dL.
*Rationale: Secondary prevention (known ASCVD) mandates high-intensity statin therapy
to achieve ≥ 50% LDL reduction, regardless of baseline LDL levels .*
8. A patient on Warfarin for a mechanical mitral valve presents with an INR of 4.8.
They deny any bleeding. What is the appropriate management?
A. Administer Vitamin K 10 mg orally immediately.
B. Hold the next dose of warfarin and recheck INR in 1-2 days.
C. Administer Fresh Frozen Plasma (FFP).
D. Increase the warfarin dose to achieve therapeutic range.
*Rationale: For an asymptomatic INR between 4.0 and 5.0, holding the next dose(s) is
standard. Vitamin K is generally reserved for INRs > 10 or signs of bleeding to avoid
over-correction and hypercoagulability in mechanical valve patients .*
9. Which electrolyte imbalance places a patient on Digoxin at the highest risk for
fatal cardiac arrhythmias (ventricular tachycardia)?
A. Hypernatremia (Na > 155)
B. Hypokalemia (K < 3.5)
C. Hypercalcemia (Ca > 10.5)
D. Hypermagnesemia (Mg > 2.5)
Rationale: Hypokalemia increases the binding of digoxin to the sodium-potassium ATPase
pump, drastically increasing the risk of digoxin toxicity and dysrhythmias. Diuretics (loop
and thiazide) are common culprits for causing hypokalemia .
10. A 72-year-old male with Benign Prostatic Hyperplasia (BPH) and hypertension
is started on Doxazosin. What adverse effect is most critical to prevent during the
first dose?
A. Reflex tachycardia
