NUR 631 MIDTERM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF.
Core Domains
Cellular Adaptation, Injury, and Death
Fluid and Electrolyte Homeostasis
Acid-Base Balance and Interpretation
Genetics and Genetic Disorders
Inflammation and Immune Response
Cardiovascular and Hematologic Pathophysiology
Pulmonary and Renal Pathophysiology
Neurological and Endocrine Dysfunction
Introduction
The NUR 631 Midterm examination assesses advanced
understanding of physiological and pathophysiological
foundations essential for graduate nursing practice. This
assessment evaluates knowledge across cellular biology,
genetics, fluid and electrolyte regulation, and multisystem
disorders. The multiple-choice and scenario-based structure
emphasizes clinical application, critical thinking, and
decision-making. Questions require integration of
,foundational theory with applied professional knowledge,
regulatory compliance, and ethical standards. This
examination prepares the advanced practice nurse to
analyze complex patient presentations and justify clinical
judgments based on pathophysiological mechanisms.
SECTION ONE: QUESTIONS 1–100
Question 1
A 58-year-old male with a 30-year history of smoking
undergoes bronchial biopsy. The pathology report indicates
replacement of normal columnar ciliated epithelium with
stratified squamous epithelium.
A. Atrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
🟢 C. Metaplasia
🔴 RATIONALE: Metaplasia is the reversible replacement of
one mature cell type with another, often as an adaptive
response to chronic irritation such as cigarette smoke. This
,protective change allows survival in a hostile environment
but alters normal function .
Question 2
A patient presents with serum sodium of 165 mEq/L and
exhibits confusion, convulsions, and cerebral hemorrhage.
What mechanism explains these neurological
manifestations?
A. Water moves from blood vessels into brain cells, causing
edema
B. High sodium pulls water out of brain cells into blood
vessels, causing cellular shrinkage
C. Sodium directly destroys neuronal cell membranes
D. Potassium shifts into brain cells, disrupting electrical
conduction
🟢 B. High sodium pulls water out of brain cells into blood
vessels, causing cellular shrinkage
🔴 RATIONALE: Hypernatremia creates a hypertonic
extracellular environment. Water follows osmotic gradients,
exiting brain cells and causing neuronal shrinkage, which
stretches cerebral vessels and can lead to hemorrhage and
neurological symptoms .
, Question 3
A patient’s blood gas analysis reveals pH 7.28, bicarbonate
28 mEq/L, and carbon dioxide 60 mm Hg. How should the
nurse interpret these findings?
A. Metabolic acidosis
B. Respiratory acidosis
C. Metabolic alkalosis
D. Respiratory alkalosis
🟢 B. Respiratory acidosis
🔴 RATIONALE: The pH is below 7.35, indicating acidosis.
The CO2 is elevated above 45 mm Hg, identifying the
respiratory system as the primary cause. The bicarbonate is
elevated as a compensatory response, retaining base to
buffer the acidosis .
Question 4
A patient who received multiple blood transfusions over
several days is being monitored for hemosiderosis. What is
the pathophysiological basis for this concern?
A. Acute hemolytic reaction to donor blood
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF.
Core Domains
Cellular Adaptation, Injury, and Death
Fluid and Electrolyte Homeostasis
Acid-Base Balance and Interpretation
Genetics and Genetic Disorders
Inflammation and Immune Response
Cardiovascular and Hematologic Pathophysiology
Pulmonary and Renal Pathophysiology
Neurological and Endocrine Dysfunction
Introduction
The NUR 631 Midterm examination assesses advanced
understanding of physiological and pathophysiological
foundations essential for graduate nursing practice. This
assessment evaluates knowledge across cellular biology,
genetics, fluid and electrolyte regulation, and multisystem
disorders. The multiple-choice and scenario-based structure
emphasizes clinical application, critical thinking, and
decision-making. Questions require integration of
,foundational theory with applied professional knowledge,
regulatory compliance, and ethical standards. This
examination prepares the advanced practice nurse to
analyze complex patient presentations and justify clinical
judgments based on pathophysiological mechanisms.
SECTION ONE: QUESTIONS 1–100
Question 1
A 58-year-old male with a 30-year history of smoking
undergoes bronchial biopsy. The pathology report indicates
replacement of normal columnar ciliated epithelium with
stratified squamous epithelium.
A. Atrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
🟢 C. Metaplasia
🔴 RATIONALE: Metaplasia is the reversible replacement of
one mature cell type with another, often as an adaptive
response to chronic irritation such as cigarette smoke. This
,protective change allows survival in a hostile environment
but alters normal function .
Question 2
A patient presents with serum sodium of 165 mEq/L and
exhibits confusion, convulsions, and cerebral hemorrhage.
What mechanism explains these neurological
manifestations?
A. Water moves from blood vessels into brain cells, causing
edema
B. High sodium pulls water out of brain cells into blood
vessels, causing cellular shrinkage
C. Sodium directly destroys neuronal cell membranes
D. Potassium shifts into brain cells, disrupting electrical
conduction
🟢 B. High sodium pulls water out of brain cells into blood
vessels, causing cellular shrinkage
🔴 RATIONALE: Hypernatremia creates a hypertonic
extracellular environment. Water follows osmotic gradients,
exiting brain cells and causing neuronal shrinkage, which
stretches cerebral vessels and can lead to hemorrhage and
neurological symptoms .
, Question 3
A patient’s blood gas analysis reveals pH 7.28, bicarbonate
28 mEq/L, and carbon dioxide 60 mm Hg. How should the
nurse interpret these findings?
A. Metabolic acidosis
B. Respiratory acidosis
C. Metabolic alkalosis
D. Respiratory alkalosis
🟢 B. Respiratory acidosis
🔴 RATIONALE: The pH is below 7.35, indicating acidosis.
The CO2 is elevated above 45 mm Hg, identifying the
respiratory system as the primary cause. The bicarbonate is
elevated as a compensatory response, retaining base to
buffer the acidosis .
Question 4
A patient who received multiple blood transfusions over
several days is being monitored for hemosiderosis. What is
the pathophysiological basis for this concern?
A. Acute hemolytic reaction to donor blood
