NSG 3180 GALEN COLLEGE UNIT 1 EXAM 2026/2027 |
Questions with Complete Solutions | Nursing Fundamentals |
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Course: NSG 3180 Pharmacology/Pathophysiology Integration
Unit: 1 – Foundations of Pharmacology and Pathophysiology
Total Questions: 60 | Time Allowed: 90 minutes
Part I: How Drugs Move and Work in the Body
Pharmacokinetics & Pharmacodynamics – 14 questions covering ADME, routes, receptor
interactions, and dose-response relationships
Q1: A nursing student asks you to explain why a patient with liver cirrhosis might need
lower doses of certain medications. Which concept best explains this clinical situation?
A. The first-pass effect will be exaggerated, leading to higher initial drug concentrations
B. Drug metabolism (biotransformation) is impaired, causing drugs to remain active
longer in the body
C. Protein binding increases in liver disease, making more free drug available
D. Renal excretion compensates by speeding up elimination of all drug classes
Correct Answer: B
Rationale: The liver is the primary site of drug metabolism. In cirrhosis, decreased
hepatic function slows biotransformation, prolonging drug action and increasing toxicity
,risk. Option A is wrong because first-pass metabolism is actually reduced in liver
disease. Option C is incorrect—liver disease typically decreases albumin production,
increasing free drug but not due to increased binding. Option D is wrong because renal
compensation doesn't universally speed elimination.
Q2: Your patient is receiving morphine via continuous IV infusion. You know that once
steady state is achieved, the drug concentration will:
A. Fluctuate wildly between doses regardless of timing
B. Remain constant because absorption is no longer a factor
C. Reach equilibrium where drug administration equals drug elimination
D. Automatically decrease by 50% every half-life regardless of infusion rate
Correct Answer: C
Rationale: Steady state occurs when the rate of drug administration equals the rate of
elimination, resulting in stable plasma concentrations. Option A describes poor
therapeutic management, not steady state. Option B confuses absorption with
elimination—IV drugs bypass absorption entirely. Option D confuses half-life elimination
with steady state principles.
Q3: A 70-year-old patient with low albumin levels is prescribed a highly protein-bound
drug. What is your primary nursing concern?
A. More free (unbound) drug is available, increasing the risk of toxicity
B. The drug will be completely inactive until protein levels normalize
C. Drug absorption will be significantly delayed
,D. The patient will require much higher doses to achieve therapeutic effects
Correct Answer: A
Rationale: Only unbound (free) drug is pharmacologically active. Low albumin means
less protein binding, leaving more free drug available to cause effects and potential
toxicity. Option B is wrong because some free drug always exists. Option C confuses
protein binding with absorption processes. Option D is dangerous—lower doses are
typically needed in hypoalbuminemia.
Q4: Which route of administration completely bypasses the first-pass effect?
A. Oral administration of a tablet
B. Sublingual nitroglycerin
C. Enteric-coated aspirin
D. Rectal suppository (lower rectum)
Correct Answer: B
Rationale: Sublingual administration allows drug absorption directly into systemic
circulation via capillaries under the tongue, completely avoiding hepatic first-pass
metabolism. Options A and C both involve GI absorption leading to the portal circulation
and liver first. Option D is partially correct but inconsistent—upper rectal veins drain to
portal circulation, while lower rectal veins drain systemically, making this route
unpredictable for bypassing first-pass.
Q5: A drug has a half-life of 4 hours. Approximately how long will it take to reach steady
state with repeated dosing?
A. 4 hours
, B. 8 hours
C. 20 hours
D. 40 hours
Correct Answer: C
Rationale: Steady state is typically reached after 4-5 half-lives. With a 4-hour half-life, 5 ×
4 = 20 hours. Option A is just one half-life. Option B is only two half-lives. Option D
represents 10 half-lives, which is longer than necessary for steady state achievement.
Q6: Your patient asks why their antibiotic must be taken every 8 hours instead of once
daily. The best explanation relates to:
A. The drug's narrow therapeutic index requiring frequent monitoring
B. The need to maintain plasma concentrations above the minimum inhibitory
concentration
C. Patient compliance is better with frequent dosing
D. The drug is only absorbed in the stomach and needs repeated exposure
Correct Answer: B
Rationale: Dosing frequency is often determined by the need to maintain effective drug
concentrations above the pathogen's minimum inhibitory concentration (MIC)
throughout the dosing interval. Option A confuses therapeutic index with
pharmacokinetics. Option C contradicts established adherence principles. Option D is
physiologically incorrect—most antibiotics are absorbed in the small intestine.
Q7: An agonist medication works by:
Questions with Complete Solutions | Nursing Fundamentals |
Pass Guaranteed - A+ Graded
Course: NSG 3180 Pharmacology/Pathophysiology Integration
Unit: 1 – Foundations of Pharmacology and Pathophysiology
Total Questions: 60 | Time Allowed: 90 minutes
Part I: How Drugs Move and Work in the Body
Pharmacokinetics & Pharmacodynamics – 14 questions covering ADME, routes, receptor
interactions, and dose-response relationships
Q1: A nursing student asks you to explain why a patient with liver cirrhosis might need
lower doses of certain medications. Which concept best explains this clinical situation?
A. The first-pass effect will be exaggerated, leading to higher initial drug concentrations
B. Drug metabolism (biotransformation) is impaired, causing drugs to remain active
longer in the body
C. Protein binding increases in liver disease, making more free drug available
D. Renal excretion compensates by speeding up elimination of all drug classes
Correct Answer: B
Rationale: The liver is the primary site of drug metabolism. In cirrhosis, decreased
hepatic function slows biotransformation, prolonging drug action and increasing toxicity
,risk. Option A is wrong because first-pass metabolism is actually reduced in liver
disease. Option C is incorrect—liver disease typically decreases albumin production,
increasing free drug but not due to increased binding. Option D is wrong because renal
compensation doesn't universally speed elimination.
Q2: Your patient is receiving morphine via continuous IV infusion. You know that once
steady state is achieved, the drug concentration will:
A. Fluctuate wildly between doses regardless of timing
B. Remain constant because absorption is no longer a factor
C. Reach equilibrium where drug administration equals drug elimination
D. Automatically decrease by 50% every half-life regardless of infusion rate
Correct Answer: C
Rationale: Steady state occurs when the rate of drug administration equals the rate of
elimination, resulting in stable plasma concentrations. Option A describes poor
therapeutic management, not steady state. Option B confuses absorption with
elimination—IV drugs bypass absorption entirely. Option D confuses half-life elimination
with steady state principles.
Q3: A 70-year-old patient with low albumin levels is prescribed a highly protein-bound
drug. What is your primary nursing concern?
A. More free (unbound) drug is available, increasing the risk of toxicity
B. The drug will be completely inactive until protein levels normalize
C. Drug absorption will be significantly delayed
,D. The patient will require much higher doses to achieve therapeutic effects
Correct Answer: A
Rationale: Only unbound (free) drug is pharmacologically active. Low albumin means
less protein binding, leaving more free drug available to cause effects and potential
toxicity. Option B is wrong because some free drug always exists. Option C confuses
protein binding with absorption processes. Option D is dangerous—lower doses are
typically needed in hypoalbuminemia.
Q4: Which route of administration completely bypasses the first-pass effect?
A. Oral administration of a tablet
B. Sublingual nitroglycerin
C. Enteric-coated aspirin
D. Rectal suppository (lower rectum)
Correct Answer: B
Rationale: Sublingual administration allows drug absorption directly into systemic
circulation via capillaries under the tongue, completely avoiding hepatic first-pass
metabolism. Options A and C both involve GI absorption leading to the portal circulation
and liver first. Option D is partially correct but inconsistent—upper rectal veins drain to
portal circulation, while lower rectal veins drain systemically, making this route
unpredictable for bypassing first-pass.
Q5: A drug has a half-life of 4 hours. Approximately how long will it take to reach steady
state with repeated dosing?
A. 4 hours
, B. 8 hours
C. 20 hours
D. 40 hours
Correct Answer: C
Rationale: Steady state is typically reached after 4-5 half-lives. With a 4-hour half-life, 5 ×
4 = 20 hours. Option A is just one half-life. Option B is only two half-lives. Option D
represents 10 half-lives, which is longer than necessary for steady state achievement.
Q6: Your patient asks why their antibiotic must be taken every 8 hours instead of once
daily. The best explanation relates to:
A. The drug's narrow therapeutic index requiring frequent monitoring
B. The need to maintain plasma concentrations above the minimum inhibitory
concentration
C. Patient compliance is better with frequent dosing
D. The drug is only absorbed in the stomach and needs repeated exposure
Correct Answer: B
Rationale: Dosing frequency is often determined by the need to maintain effective drug
concentrations above the pathogen's minimum inhibitory concentration (MIC)
throughout the dosing interval. Option A confuses therapeutic index with
pharmacokinetics. Option C contradicts established adherence principles. Option D is
physiologically incorrect—most antibiotics are absorbed in the small intestine.
Q7: An agonist medication works by:
