Fortis College NUR100 HESI ACTUAL
EXAM 2026/2027 | Pharmacology Exam
V1 | Q&A with Rationales | Verified | Pass
Guaranteed - A+ Graded
Section A: Pharmacokinetics & Pharmacodynamics (Q1–Q8)
Q1. A patient receives a medication that undergoes extensive first-pass metabolism. To achieve
therapeutic systemic levels, the prescriber orders an alternative route that bypasses this effect. Which
route would be most appropriate?
A. Oral
B. Sublingual [CORRECT]
C. Intramuscular
D. Topical
Correct Answer: B
Rationale: Sublingual administration allows the drug to absorb directly into systemic circulation via the
sublingual mucosa, bypassing portal circulation and hepatic first-pass metabolism. Oral administration
would be subject to first-pass effect.
Q2. A patient has been taking digoxin daily for 3 months. The nurse notes a new onset of nausea,
blurred yellow vision, and a heart rate of 48 bpm. The patient's potassium level is 3.2 mEq/L. These
findings are most consistent with:
A. An allergic reaction to digoxin
B. Digoxin toxicity [CORRECT]
C. Expected side effects of digoxin
D. Withdrawal from digoxin
Correct Answer: B
,Rationale: Digoxin toxicity presents with GI symptoms (nausea, vomiting), visual disturbances (yellow-
green halos, blurred vision), and bradycardia. Hypokalemia (normal 3.5–5.0 mEq/L) potentiates digoxin
toxicity by increasing binding to the sodium-potassium ATPase pump.
Q3. A nurse is reviewing pharmacokinetic principles with a nursing student. The student correctly
identifies that the time required for the plasma concentration of a drug to decrease by 50% is known as:
A. Steady state
B. Therapeutic index
C. Half-life [CORRECT]
D. Bioavailability
Correct Answer: C
Rationale: Half-life is the time required for the plasma concentration of a drug to decrease by 50%. It
determines dosing intervals and the time to reach steady state (approximately 4–5 half-lives).
Q4. A patient is prescribed phenytoin. The nurse knows that this drug exhibits zero-order kinetics at high
concentrations. Which statement best describes zero-order kinetics?
A. A constant amount of drug is metabolized per unit time regardless of concentration [CORRECT]
B. A constant fraction of the drug is eliminated per unit time
C. The drug is metabolized at a rate proportional to its concentration
D. Drug elimination increases as plasma concentration decreases
Correct Answer: A
Rationale: Zero-order kinetics occurs when a constant amount of drug is metabolized per unit time,
independent of plasma concentration. This is characteristic of phenytoin at therapeutic and
supratherapeutic levels, making dosing adjustments critical to avoid toxicity.
Q5. A patient is taking warfarin and is started on phenytoin. The nurse anticipates that the patient's INR
will:
A. Decrease, requiring a warfarin dose increase [CORRECT]
B. Increase, requiring a warfarin dose decrease
C. Remain unchanged
D. Fluctuate unpredictably
Correct Answer: A
, Rationale: Phenytoin is a hepatic enzyme inducer that accelerates warfarin metabolism, decreasing its
anticoagulant effect and lowering INR. The nurse should anticipate the need for increased warfarin
dosing and more frequent INR monitoring.
Q6. A nurse is administering a loading dose of digoxin to a patient with atrial fibrillation. The primary
purpose of a loading dose is to:
A. Maintain a steady plasma concentration
B. Achieve therapeutic plasma concentration more rapidly [CORRECT]
C. Prevent drug accumulation in tissues
D. Reduce the frequency of administration
Correct Answer: B
Rationale: A loading dose is a larger initial dose given to rapidly achieve therapeutic plasma
concentration. Maintenance doses are then given to sustain that concentration. Without a loading dose,
it would take approximately 4–5 half-lives to reach steady state.
Q7. A patient asks the nurse why some medications have a narrow therapeutic index. The nurse
correctly explains that a narrow therapeutic index means:
A. The drug is highly effective at low doses
B. The therapeutic dose is close to the toxic dose [CORRECT]
C. The drug requires frequent monitoring
D. The drug has minimal side effects
Correct Answer: B
Rationale: A narrow therapeutic index means the difference between the therapeutic dose and the toxic
dose is small. Drugs like digoxin, lithium, phenytoin, and warfarin require frequent therapeutic drug
monitoring to maintain levels within the narrow safe range.
Q8. A patient is taking a highly protein-bound drug (99% bound to albumin). The nurse should monitor
for increased free drug levels and potential toxicity if the patient also receives:
A. A drug that induces hepatic enzymes
B. A drug that is also highly protein-bound [CORRECT]
C. A drug that increases gastric pH
D. A drug that enhances renal excretion
Correct Answer: B
EXAM 2026/2027 | Pharmacology Exam
V1 | Q&A with Rationales | Verified | Pass
Guaranteed - A+ Graded
Section A: Pharmacokinetics & Pharmacodynamics (Q1–Q8)
Q1. A patient receives a medication that undergoes extensive first-pass metabolism. To achieve
therapeutic systemic levels, the prescriber orders an alternative route that bypasses this effect. Which
route would be most appropriate?
A. Oral
B. Sublingual [CORRECT]
C. Intramuscular
D. Topical
Correct Answer: B
Rationale: Sublingual administration allows the drug to absorb directly into systemic circulation via the
sublingual mucosa, bypassing portal circulation and hepatic first-pass metabolism. Oral administration
would be subject to first-pass effect.
Q2. A patient has been taking digoxin daily for 3 months. The nurse notes a new onset of nausea,
blurred yellow vision, and a heart rate of 48 bpm. The patient's potassium level is 3.2 mEq/L. These
findings are most consistent with:
A. An allergic reaction to digoxin
B. Digoxin toxicity [CORRECT]
C. Expected side effects of digoxin
D. Withdrawal from digoxin
Correct Answer: B
,Rationale: Digoxin toxicity presents with GI symptoms (nausea, vomiting), visual disturbances (yellow-
green halos, blurred vision), and bradycardia. Hypokalemia (normal 3.5–5.0 mEq/L) potentiates digoxin
toxicity by increasing binding to the sodium-potassium ATPase pump.
Q3. A nurse is reviewing pharmacokinetic principles with a nursing student. The student correctly
identifies that the time required for the plasma concentration of a drug to decrease by 50% is known as:
A. Steady state
B. Therapeutic index
C. Half-life [CORRECT]
D. Bioavailability
Correct Answer: C
Rationale: Half-life is the time required for the plasma concentration of a drug to decrease by 50%. It
determines dosing intervals and the time to reach steady state (approximately 4–5 half-lives).
Q4. A patient is prescribed phenytoin. The nurse knows that this drug exhibits zero-order kinetics at high
concentrations. Which statement best describes zero-order kinetics?
A. A constant amount of drug is metabolized per unit time regardless of concentration [CORRECT]
B. A constant fraction of the drug is eliminated per unit time
C. The drug is metabolized at a rate proportional to its concentration
D. Drug elimination increases as plasma concentration decreases
Correct Answer: A
Rationale: Zero-order kinetics occurs when a constant amount of drug is metabolized per unit time,
independent of plasma concentration. This is characteristic of phenytoin at therapeutic and
supratherapeutic levels, making dosing adjustments critical to avoid toxicity.
Q5. A patient is taking warfarin and is started on phenytoin. The nurse anticipates that the patient's INR
will:
A. Decrease, requiring a warfarin dose increase [CORRECT]
B. Increase, requiring a warfarin dose decrease
C. Remain unchanged
D. Fluctuate unpredictably
Correct Answer: A
, Rationale: Phenytoin is a hepatic enzyme inducer that accelerates warfarin metabolism, decreasing its
anticoagulant effect and lowering INR. The nurse should anticipate the need for increased warfarin
dosing and more frequent INR monitoring.
Q6. A nurse is administering a loading dose of digoxin to a patient with atrial fibrillation. The primary
purpose of a loading dose is to:
A. Maintain a steady plasma concentration
B. Achieve therapeutic plasma concentration more rapidly [CORRECT]
C. Prevent drug accumulation in tissues
D. Reduce the frequency of administration
Correct Answer: B
Rationale: A loading dose is a larger initial dose given to rapidly achieve therapeutic plasma
concentration. Maintenance doses are then given to sustain that concentration. Without a loading dose,
it would take approximately 4–5 half-lives to reach steady state.
Q7. A patient asks the nurse why some medications have a narrow therapeutic index. The nurse
correctly explains that a narrow therapeutic index means:
A. The drug is highly effective at low doses
B. The therapeutic dose is close to the toxic dose [CORRECT]
C. The drug requires frequent monitoring
D. The drug has minimal side effects
Correct Answer: B
Rationale: A narrow therapeutic index means the difference between the therapeutic dose and the toxic
dose is small. Drugs like digoxin, lithium, phenytoin, and warfarin require frequent therapeutic drug
monitoring to maintain levels within the narrow safe range.
Q8. A patient is taking a highly protein-bound drug (99% bound to albumin). The nurse should monitor
for increased free drug levels and potential toxicity if the patient also receives:
A. A drug that induces hepatic enzymes
B. A drug that is also highly protein-bound [CORRECT]
C. A drug that increases gastric pH
D. A drug that enhances renal excretion
Correct Answer: B
