NU 650 Midterm Exam Actual Exam 2026/2027 with Detailed
Rationales | Complete Exam-Style Questions | 100% Verified | Pass
Guaranteed – A+ Graded
EXAM INFORMATION
Total Questions: 50
Recommended Time: 75 minutes
Passing Threshold: 85%
Exam Format: Multiple Choice Questions (MCQs)
Question Style: Scenario-Based, Applied, and Professional Decision-Making Questions
Difficulty Level: Dynamically Determined Based on Exam Scope
==============================
SECTION 1: Advanced Pathophysiology
Question 1: A 65-year-old male with a history of chronic hypertension presents with
severe shortness of breath. Echocardiography reveals left ventricular hypertrophy and
an ejection fraction of 35%. Which cellular mechanism primarily contributes to the
ventricular remodeling seen in this patient?
A. Apoptosis of cardiac myocytes due to acute ischemia
B. Hypertrophy of cardiac myocytes in response to increased afterload
C. Hyperplasia of cardiac myocytes induced by neurohormonal stimuli
D. Metaplasia of the endocardial endothelium
Correct Answer: B
,Rationale: Increased afterload from chronic hypertension forces the left ventricle to
pump against higher resistance, causing the cardiac myocytes to increase in size
(hypertrophy) to compensate. Cardiac myocytes are terminally differentiated and do not
undergo hyperplasia. Apoptosis and metaplasia are not the primary mechanisms of
pressure overload remodeling.
Question 2: A patient presents with a fever, fatigue, and elevated inflammatory markers.
Which acute-phase reactant is synthesized by the liver and increases rapidly in response
to tissue injury or infection?
A. Albumin
B. C-reactive protein
C. Immunoglobulin G
D. Ferritin
Correct Answer: B
Rationale: C-reactive protein (CRP) is an acute-phase reactant synthesized by the liver.
Its levels rise rapidly in response to inflammation, tissue injury, or infection. Albumin is a
negative acute-phase reactant (decreases during inflammation). Immunoglobulins are
produced by plasma cells, and ferritin, while an acute-phase reactant, is primarily an
intracellular iron storage protein.
Question 3: A 55-year-old male with chronic obstructive pulmonary disease (COPD)
presents with confusion and lethargy. Arterial blood gas analysis reveals pH 7.30,
, PaCO2 65 mmHg, and HCO3- 32 mEq/L. Which of the following best describes the
underlying acid-base pathophysiology?
A. Uncompensated respiratory acidosis
B. Partially compensated respiratory acidosis
C. Metabolic alkalosis
D. Respiratory alkalosis
Correct Answer: B
Rationale: The low pH indicates acidosis. The elevated PaCO2 indicates a respiratory
cause (hypoventilation). The elevated HCO3- indicates that the kidneys are retaining
bicarbonate to buffer the acid, which demonstrates partial compensation. Full
compensation would result in a normal pH.
Question 4: Following an ischemic stroke, a patient develops cerebral edema. Which
pathophysiological process describes the accumulation of fluid in the brain tissue due
to failure of the sodium-potassium ATPase pump?
A. Vasogenic edema
B. Cytotoxic edema
C. Hydrocephalic edema
D. Interstitial edema
Correct Answer: B
Rationale: Cytotoxic edema occurs when cellular energy failure (ischemia) impairs the
sodium-potassium ATPase pump, leading to intracellular sodium accumulation and
subsequent cellular swelling. Vasogenic edema is due to blood-brain barrier breakdown
causing extracellular fluid accumulation.
Rationales | Complete Exam-Style Questions | 100% Verified | Pass
Guaranteed – A+ Graded
EXAM INFORMATION
Total Questions: 50
Recommended Time: 75 minutes
Passing Threshold: 85%
Exam Format: Multiple Choice Questions (MCQs)
Question Style: Scenario-Based, Applied, and Professional Decision-Making Questions
Difficulty Level: Dynamically Determined Based on Exam Scope
==============================
SECTION 1: Advanced Pathophysiology
Question 1: A 65-year-old male with a history of chronic hypertension presents with
severe shortness of breath. Echocardiography reveals left ventricular hypertrophy and
an ejection fraction of 35%. Which cellular mechanism primarily contributes to the
ventricular remodeling seen in this patient?
A. Apoptosis of cardiac myocytes due to acute ischemia
B. Hypertrophy of cardiac myocytes in response to increased afterload
C. Hyperplasia of cardiac myocytes induced by neurohormonal stimuli
D. Metaplasia of the endocardial endothelium
Correct Answer: B
,Rationale: Increased afterload from chronic hypertension forces the left ventricle to
pump against higher resistance, causing the cardiac myocytes to increase in size
(hypertrophy) to compensate. Cardiac myocytes are terminally differentiated and do not
undergo hyperplasia. Apoptosis and metaplasia are not the primary mechanisms of
pressure overload remodeling.
Question 2: A patient presents with a fever, fatigue, and elevated inflammatory markers.
Which acute-phase reactant is synthesized by the liver and increases rapidly in response
to tissue injury or infection?
A. Albumin
B. C-reactive protein
C. Immunoglobulin G
D. Ferritin
Correct Answer: B
Rationale: C-reactive protein (CRP) is an acute-phase reactant synthesized by the liver.
Its levels rise rapidly in response to inflammation, tissue injury, or infection. Albumin is a
negative acute-phase reactant (decreases during inflammation). Immunoglobulins are
produced by plasma cells, and ferritin, while an acute-phase reactant, is primarily an
intracellular iron storage protein.
Question 3: A 55-year-old male with chronic obstructive pulmonary disease (COPD)
presents with confusion and lethargy. Arterial blood gas analysis reveals pH 7.30,
, PaCO2 65 mmHg, and HCO3- 32 mEq/L. Which of the following best describes the
underlying acid-base pathophysiology?
A. Uncompensated respiratory acidosis
B. Partially compensated respiratory acidosis
C. Metabolic alkalosis
D. Respiratory alkalosis
Correct Answer: B
Rationale: The low pH indicates acidosis. The elevated PaCO2 indicates a respiratory
cause (hypoventilation). The elevated HCO3- indicates that the kidneys are retaining
bicarbonate to buffer the acid, which demonstrates partial compensation. Full
compensation would result in a normal pH.
Question 4: Following an ischemic stroke, a patient develops cerebral edema. Which
pathophysiological process describes the accumulation of fluid in the brain tissue due
to failure of the sodium-potassium ATPase pump?
A. Vasogenic edema
B. Cytotoxic edema
C. Hydrocephalic edema
D. Interstitial edema
Correct Answer: B
Rationale: Cytotoxic edema occurs when cellular energy failure (ischemia) impairs the
sodium-potassium ATPase pump, leading to intracellular sodium accumulation and
subsequent cellular swelling. Vasogenic edema is due to blood-brain barrier breakdown
causing extracellular fluid accumulation.
