,NU 136 - Fundamentals of Nursing Exam 2 Questions
and Answers with Rationale 2026/2027 Update
Question 1: Pharmacokinetics (Drug Absorption and First-
Pass Effect)
A clinical pharmacologist is reviewing the oral administration of
a drug that undergoes a high first-pass hepatic metabolism.
Which of the following consequences is most likely associated
with this pharmacological profile?
A. The drug will be completely inactive when administered
via the intravenous route.
B. A significantly higher oral dosage is required compared
to its intravenous dosage to achieve equivalent therapeutic
plasma concentrations.
C. The drug is completely unaffected by cytochrome P450
liver enzymes.
D. Bioavailability via the oral route approaches 100%.
Correct Answer: B. A significantly higher oral dosage is
required compared to its intravenous dosage to achieve
equivalent therapeutic plasma concentrations.
Expert Rationale: Drugs undergoing a high first-pass effect are
heavily metabolized by the liver and gut wall enzymes before
reaching systemic circulation when taken orally. Consequently,
oral bioavailability is low, necessitating a much higher oral
dose than an IV dose (which bypasses the portal circulation
entirely, achieving 100% bioavailability).
Question 2: Pharmacodynamics (Agonists vs. Antagonists)
,An advanced practice nurse is analyzing the action of a newly
developed medication that binds to a specific cellular receptor,
completely blocking endogenous ligands from binding while
producing no intrinsic cellular activity or biological response of
its own. This drug is best classified as a:
A. Full agonist
B. Partial agonist
C. Competitive antagonist
D. Allosteric enhancer
Correct Answer: C. Competitive antagonist
Expert Rationale: A competitive antagonist binds reversibly
to the same receptor site as the endogenous agonist, preventing
activation (zero intrinsic activity) and blocking the agonist's
effects. Its inhibitory effect can be overcome by increasing the
concentration of the agonist.
Question 3: Pathophysiology (Inflammation and Chemical
Mediators)
During an acute inflammatory response, which of the following
cellular mediators is primarily responsible for inducing local
arteriolar vasodilation, increased vascular permeability, and the
classic sensation of pain?
A. Interleukin-10 (IL-10)
B. Prostaglandins and bradykinin
C. Albumin and transferrin
D. Surfactant protein A
Correct Answer: B. Prostaglandins and bradykinin
, Expert Rationale: Prostaglandins induce vasodilation, mediate
fever, and sensitize pain receptors to other stimuli. Bradykinin
directly stimulates nociceptors (causing pain) and increases
vascular permeability, leading to local exudation and edema
during acute inflammation.
Question 4: Pathophysiology (Type I Hypersensitivity
Reaction)
A client presents to the emergency department with acute
laryngeal edema, urticaria, and wheezing immediately after
consuming peanuts. This life-threatening reaction is mediated
primarily by which immunoglobulin type and effector cell?
A. IgG binding to neutrophils
B. IgM binding to erythrocytes
C. IgE binding to mast cells and basophils
D. IgA binding to mucosal epithelial cells
Correct Answer: C. IgE binding to mast cells and basophils
Expert Rationale: Type I hypersensitivity reactions are
immediate, IgE-mediated immune responses. Allergens
crosslink IgE antibodies bound to high-affinity Fc receptors on
mast cells and basophils, triggering the rapid degranulation and
release of histamine, leukotrienes, and vasoactive mediators.
Question 5: Advanced Pharmacology (Autonomic Nervous
System / Cholinergic Toxicity)
An industrial worker is brought to the clinic following
accidental exposure to an organophosphate pesticide (an
and Answers with Rationale 2026/2027 Update
Question 1: Pharmacokinetics (Drug Absorption and First-
Pass Effect)
A clinical pharmacologist is reviewing the oral administration of
a drug that undergoes a high first-pass hepatic metabolism.
Which of the following consequences is most likely associated
with this pharmacological profile?
A. The drug will be completely inactive when administered
via the intravenous route.
B. A significantly higher oral dosage is required compared
to its intravenous dosage to achieve equivalent therapeutic
plasma concentrations.
C. The drug is completely unaffected by cytochrome P450
liver enzymes.
D. Bioavailability via the oral route approaches 100%.
Correct Answer: B. A significantly higher oral dosage is
required compared to its intravenous dosage to achieve
equivalent therapeutic plasma concentrations.
Expert Rationale: Drugs undergoing a high first-pass effect are
heavily metabolized by the liver and gut wall enzymes before
reaching systemic circulation when taken orally. Consequently,
oral bioavailability is low, necessitating a much higher oral
dose than an IV dose (which bypasses the portal circulation
entirely, achieving 100% bioavailability).
Question 2: Pharmacodynamics (Agonists vs. Antagonists)
,An advanced practice nurse is analyzing the action of a newly
developed medication that binds to a specific cellular receptor,
completely blocking endogenous ligands from binding while
producing no intrinsic cellular activity or biological response of
its own. This drug is best classified as a:
A. Full agonist
B. Partial agonist
C. Competitive antagonist
D. Allosteric enhancer
Correct Answer: C. Competitive antagonist
Expert Rationale: A competitive antagonist binds reversibly
to the same receptor site as the endogenous agonist, preventing
activation (zero intrinsic activity) and blocking the agonist's
effects. Its inhibitory effect can be overcome by increasing the
concentration of the agonist.
Question 3: Pathophysiology (Inflammation and Chemical
Mediators)
During an acute inflammatory response, which of the following
cellular mediators is primarily responsible for inducing local
arteriolar vasodilation, increased vascular permeability, and the
classic sensation of pain?
A. Interleukin-10 (IL-10)
B. Prostaglandins and bradykinin
C. Albumin and transferrin
D. Surfactant protein A
Correct Answer: B. Prostaglandins and bradykinin
, Expert Rationale: Prostaglandins induce vasodilation, mediate
fever, and sensitize pain receptors to other stimuli. Bradykinin
directly stimulates nociceptors (causing pain) and increases
vascular permeability, leading to local exudation and edema
during acute inflammation.
Question 4: Pathophysiology (Type I Hypersensitivity
Reaction)
A client presents to the emergency department with acute
laryngeal edema, urticaria, and wheezing immediately after
consuming peanuts. This life-threatening reaction is mediated
primarily by which immunoglobulin type and effector cell?
A. IgG binding to neutrophils
B. IgM binding to erythrocytes
C. IgE binding to mast cells and basophils
D. IgA binding to mucosal epithelial cells
Correct Answer: C. IgE binding to mast cells and basophils
Expert Rationale: Type I hypersensitivity reactions are
immediate, IgE-mediated immune responses. Allergens
crosslink IgE antibodies bound to high-affinity Fc receptors on
mast cells and basophils, triggering the rapid degranulation and
release of histamine, leukotrienes, and vasoactive mediators.
Question 5: Advanced Pharmacology (Autonomic Nervous
System / Cholinergic Toxicity)
An industrial worker is brought to the clinic following
accidental exposure to an organophosphate pesticide (an
