NURS 251 PHARMACOLOGY EXAM EVALUATION NURSING
PHARMACOLOGY PROGRAM 2026/2027 – EXAM NEWEST
EXAM PREPARATION WITH COMPLETE QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES | ALREADY GRADED
A+||BRAND NEW VERSION!!
SECTION A: PHARMACOKINETICS & PHARMACODYNAMICS (Questions 1-20)
Question 1:
A patient is prescribed a drug that is a weak acid. The nurse understands that
this drug will be better absorbed in which part of the gastrointestinal tract?
A) Stomach (acidic environment)
B) Small intestine (alkaline environment)
C) Colon
D) Rectum
Answer: A) Stomach (acidic environment)
Rationale: Weak acids are non-ionized and lipid-soluble in acidic environments,
facilitating absorption across gastric mucosa. Weak bases are better absorbed in
the alkaline small intestine.
Question 2:
A drug has a volume of distribution (Vd) of 50 L. This indicates that the drug:
A) Is primarily confined to the plasma
B) Is extensively distributed into tissues
C) Is highly protein-bound
D) Is excreted rapidly
Answer: B) Is extensively distributed into tissues
Rationale: A large Vd (> 42 L total body water) indicates extensive tissue
distribution, meaning the drug leaves the bloodstream and concentrates in
tissues.
1
,Question 3:
The nurse is teaching a patient about enteric-coated aspirin. Which statement
by the patient indicates correct understanding?
A) "I can crush it if I have trouble swallowing."
B) "It is designed to dissolve in the small intestine to reduce gastric
irritation."
C) "I should chew it for faster pain relief."
D) "It works faster than regular aspirin."
Answer: B) "It is designed to dissolve in the small intestine to reduce gastric
irritation."
Rationale: Enteric coatings resist stomach acid and dissolve in the more
alkaline environment of the small intestine, protecting the stomach mucosa.
Question 4:
A patient is receiving a drug that is 95% protein-bound. The nurse recognizes
that which condition could increase the risk of drug toxicity?
A) Hypoalbuminemia
B) Hyperalbuminemia
C) Decreased liver enzymes
D) Increased glomerular filtration
Answer: A) Hypoalbuminemia
Rationale: Low albumin means fewer binding sites, increasing the free
(unbound) active drug concentration, which can lead to toxicity.
Question 5:
A drug with a narrow therapeutic index requires:
A) Less frequent dosing
2
,B) Frequent monitoring of serum drug levels
C) Administration with food only
D) IV administration only
Answer: B) Frequent monitoring of serum drug levels
Rationale: Narrow therapeutic index means the margin between therapeutic and
toxic doses is small; serum levels must be monitored closely (e.g., digoxin,
lithium, vancomycin).
Question 6:
The nurse administers a medication that is an antagonist at histamine-2
receptors. The expected therapeutic effect is:
A) Decreased gastric acid secretion
B) Increased gastric acid secretion
C) Bronchodilation
D) Vasoconstriction
Answer: A) Decreased gastric acid secretion
Rationale: H2 receptor antagonists (e.g., famotidine) block histamine-induced
gastric acid secretion in the stomach.
Question 7:
A patient with hepatic cirrhosis is prescribed a medication that undergoes
extensive first-pass metabolism. The nurse anticipates that the patient may
require:
A) A higher dose because metabolism is increased
B) A lower dose because metabolism is reduced
C) The same dose as a healthy patient
D) The medication to be given subcutaneously
Answer: B) A lower dose because metabolism is reduced
3
, Rationale: Liver disease reduces hepatic first-pass metabolism, leading to
higher systemic bioavailability; a lower dose is often needed.
Question 8:
Which factor increases the risk of drug accumulation and toxicity in older
adults?
A) Increased hepatic blood flow
B) Increased glomerular filtration rate
C) Decreased lean body mass and total body water
D) Increased protein synthesis
Answer: C) Decreased lean body mass and total body water
Rationale: Age-related decrease in lean body mass and water increases the
concentration of water-soluble drugs; decreased renal function also slows
elimination.
Question 9:
The nurse is preparing to administer a medication that has a high affinity for
alpha-1 receptors. Which effect should the nurse expect?
A) Vasodilation and hypotension
B) Vasoconstriction and increased blood pressure
C) Bronchoconstriction
D) Increased heart rate
Answer: B) Vasoconstriction and increased blood pressure
Rationale: Alpha-1 receptor stimulation causes smooth muscle contraction,
including vascular smooth muscle, leading to vasoconstriction and increased BP.
Question 10:
A patient is taking a drug that induces CYP450 enzymes. The nurse anticipates
4
PHARMACOLOGY PROGRAM 2026/2027 – EXAM NEWEST
EXAM PREPARATION WITH COMPLETE QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES | ALREADY GRADED
A+||BRAND NEW VERSION!!
SECTION A: PHARMACOKINETICS & PHARMACODYNAMICS (Questions 1-20)
Question 1:
A patient is prescribed a drug that is a weak acid. The nurse understands that
this drug will be better absorbed in which part of the gastrointestinal tract?
A) Stomach (acidic environment)
B) Small intestine (alkaline environment)
C) Colon
D) Rectum
Answer: A) Stomach (acidic environment)
Rationale: Weak acids are non-ionized and lipid-soluble in acidic environments,
facilitating absorption across gastric mucosa. Weak bases are better absorbed in
the alkaline small intestine.
Question 2:
A drug has a volume of distribution (Vd) of 50 L. This indicates that the drug:
A) Is primarily confined to the plasma
B) Is extensively distributed into tissues
C) Is highly protein-bound
D) Is excreted rapidly
Answer: B) Is extensively distributed into tissues
Rationale: A large Vd (> 42 L total body water) indicates extensive tissue
distribution, meaning the drug leaves the bloodstream and concentrates in
tissues.
1
,Question 3:
The nurse is teaching a patient about enteric-coated aspirin. Which statement
by the patient indicates correct understanding?
A) "I can crush it if I have trouble swallowing."
B) "It is designed to dissolve in the small intestine to reduce gastric
irritation."
C) "I should chew it for faster pain relief."
D) "It works faster than regular aspirin."
Answer: B) "It is designed to dissolve in the small intestine to reduce gastric
irritation."
Rationale: Enteric coatings resist stomach acid and dissolve in the more
alkaline environment of the small intestine, protecting the stomach mucosa.
Question 4:
A patient is receiving a drug that is 95% protein-bound. The nurse recognizes
that which condition could increase the risk of drug toxicity?
A) Hypoalbuminemia
B) Hyperalbuminemia
C) Decreased liver enzymes
D) Increased glomerular filtration
Answer: A) Hypoalbuminemia
Rationale: Low albumin means fewer binding sites, increasing the free
(unbound) active drug concentration, which can lead to toxicity.
Question 5:
A drug with a narrow therapeutic index requires:
A) Less frequent dosing
2
,B) Frequent monitoring of serum drug levels
C) Administration with food only
D) IV administration only
Answer: B) Frequent monitoring of serum drug levels
Rationale: Narrow therapeutic index means the margin between therapeutic and
toxic doses is small; serum levels must be monitored closely (e.g., digoxin,
lithium, vancomycin).
Question 6:
The nurse administers a medication that is an antagonist at histamine-2
receptors. The expected therapeutic effect is:
A) Decreased gastric acid secretion
B) Increased gastric acid secretion
C) Bronchodilation
D) Vasoconstriction
Answer: A) Decreased gastric acid secretion
Rationale: H2 receptor antagonists (e.g., famotidine) block histamine-induced
gastric acid secretion in the stomach.
Question 7:
A patient with hepatic cirrhosis is prescribed a medication that undergoes
extensive first-pass metabolism. The nurse anticipates that the patient may
require:
A) A higher dose because metabolism is increased
B) A lower dose because metabolism is reduced
C) The same dose as a healthy patient
D) The medication to be given subcutaneously
Answer: B) A lower dose because metabolism is reduced
3
, Rationale: Liver disease reduces hepatic first-pass metabolism, leading to
higher systemic bioavailability; a lower dose is often needed.
Question 8:
Which factor increases the risk of drug accumulation and toxicity in older
adults?
A) Increased hepatic blood flow
B) Increased glomerular filtration rate
C) Decreased lean body mass and total body water
D) Increased protein synthesis
Answer: C) Decreased lean body mass and total body water
Rationale: Age-related decrease in lean body mass and water increases the
concentration of water-soluble drugs; decreased renal function also slows
elimination.
Question 9:
The nurse is preparing to administer a medication that has a high affinity for
alpha-1 receptors. Which effect should the nurse expect?
A) Vasodilation and hypotension
B) Vasoconstriction and increased blood pressure
C) Bronchoconstriction
D) Increased heart rate
Answer: B) Vasoconstriction and increased blood pressure
Rationale: Alpha-1 receptor stimulation causes smooth muscle contraction,
including vascular smooth muscle, leading to vasoconstriction and increased BP.
Question 10:
A patient is taking a drug that induces CYP450 enzymes. The nurse anticipates
4
