REGIS NU650 Week 15 Final Exam – Late Spring
2026/2027 Actual Exam Complete Questions and
Answers with Detailed Rationales – Pass
Guaranteed – A+ Graded
Section 1: Advanced Pathophysiology – Disease Mechanisms & Clinical
Presentation
Q1: A 58-year-old patient with progressive dyspnea has a BNP level of 450 pg/mL.
Which pathophysiological process best explains this laboratory finding?
A. Primary aldosteronism causing sodium retention
B. Reduced hepatic clearance of natriuretic peptides
C. Left ventricular wall stretch from volume or pressure overload [CORRECT]
D. Excessive antidiuretic hormone secretion from the posterior pituitary
Correct Answer: C
Rationale: The best answer is left ventricular wall stretch. BNP is released by
cardiomyocytes in response to myocardial stretch from increased ventricular filling
pressures, which is why it rises in heart failure and volume overload states.
Q2: A 45-year-old patient with type 2 diabetes reports numbness and tingling in a
stocking-glove distribution that worsens at night. Which underlying mechanism is
primarily responsible for this presentation?
A. Microvascular ischemia causing demyelination of large motor fibers
B. Chronic hyperglycemia leading to sorbitol accumulation and oxidative nerve damage
[CORRECT]
,C. Autoimmune destruction of Schwann cells
D. Vitamin B12 malabsorption secondary to metformin therapy
Correct Answer: B
Rationale: This choice is correct because diabetic peripheral neuropathy stems from
chronic hyperglycemia triggering the polyol pathway, where excess glucose converts to
sorbitol and fructose, leading to osmotic stress and oxidative damage in peripheral
nerves.
Q3: A patient hospitalized for a COPD exacerbation develops peripheral edema and
elevated jugular venous pressure. Which pathophysiologic process best explains these
new findings?
A. Left heart failure causing pulmonary venous hypertension
B. Hypoxic pulmonary vasoconstriction leading to right ventricular strain [CORRECT]
C. Excessive fluid intake during corticosteroid therapy
D. Alveolar destruction causing decreased oncotic pressure
Correct Answer: B
Rationale: This choice is correct because chronic hypoxia in COPD triggers pulmonary
vasoconstriction, which increases pulmonary artery pressures and places progressive
strain on the right ventricle, producing cor pulmonale with edema and JVD.
Q4: In a patient with newly diagnosed rheumatoid arthritis, which pathophysiologic
finding is most characteristic of the disease process?
A. T-cell mediated destruction of cartilage with IgG antibody formation
B. Synovial inflammation driven by cytokines such as TNF-alpha and IL-6 [CORRECT]
C. Calcium pyrophosphate deposition in joint spaces
D. Uric acid crystal accumulation triggering neutrophil activation
Correct Answer: B
,Rationale: The best answer is synovial inflammation driven by pro-inflammatory
cytokines. RA is fundamentally an autoimmune process where T-cells, B-cells, and
macrophages release TNF-alpha and IL-6, creating pannus formation and progressive
joint erosion.
Q5: A 72-year-old patient presents with sudden right-sided weakness and expressive
aphasia. CT scan shows no hemorrhage. Which cascade of events is most likely
occurring in the affected brain tissue?
A. Vasogenic edema from blood-brain barrier disruption due to chronic hypertension
B. Ischemic core with surrounding penumbra experiencing excitotoxicity and calcium
influx [CORRECT]
C. Amyloid plaque deposition causing neurofibrillary tangles
D. Subarachnoid blood causing vasospasm and delayed cerebral ischemia
Correct Answer: B
Rationale: This choice is correct because acute ischemic stroke creates a central core
of irreversible infarction surrounded by a threatened penumbra where neurons are viable
but injured by glutamate excitotoxicity, calcium overload, and impending energy failure.
Q6: A patient with CKD stage 4 has an eGFR of 22 mL/min. Which pathophysiologic
consequence is most directly related to this level of renal dysfunction?
A. Excessive calcitriol production causing hypercalcemia
B. Inability to concentrate urine and increased risk of hyperkalemia [CORRECT]
C. Increased erythropoietin leading to polycythemia
D. Enhanced phosphate excretion causing hypophosphatemia
Correct Answer: B
Rationale: The best answer is impaired urinary concentration and hyperkalemia risk. As
nephrons are lost, the kidney loses both diluting and concentrating ability while
potassium excretion falters, making hyperkalemia a constant threat in advanced CKD.
, Q7: A 35-year-old patient describes epigastric pain that improves after eating a meal.
Which pathophysiologic process best explains this classic presentation?
A. Gastric acid erosion of duodenal mucosa with impaired bicarbonate secretion
[CORRECT]
B. Reflux of bile salts into the gastric antrum
C. H. pylori-induced destruction of gastric parietal cells
D. Weakness of the lower esophageal sphincter tone
Correct Answer: A
Rationale: This choice is correct because duodenal ulcer pain typically improves with
food, which buffers gastric acid, whereas the underlying problem is excessive acid
exposure overwhelming the duodenum's limited bicarbonate defense.
Q8: In the renin-angiotensin-aldosterone system, which hormone is the primary direct
vasoconstrictor that increases systemic vascular resistance?
A. Renin
B. Angiotensin II [CORRECT]
C. Aldosterone
D. Bradykinin
Correct Answer: B
Rationale: The best answer is angiotensin II. While aldosterone promotes sodium
retention and renin initiates the cascade, angiotensin II is the potent peptide that
directly constricts arteriolar smooth muscle and drives blood pressure upward.
Q9: A patient with multiple sclerosis experiences an exacerbation characterized by
painful vision loss in one eye. Which pathophysiologic process underlies this optic
neuritis?
A. Demyelination of central nervous system axons by autoreactive T-cells and
antibodies [CORRECT]
B. Compression of the optic nerve by a pituitary macroadenoma
C. Ischemic infarction of the occipital cortex
2026/2027 Actual Exam Complete Questions and
Answers with Detailed Rationales – Pass
Guaranteed – A+ Graded
Section 1: Advanced Pathophysiology – Disease Mechanisms & Clinical
Presentation
Q1: A 58-year-old patient with progressive dyspnea has a BNP level of 450 pg/mL.
Which pathophysiological process best explains this laboratory finding?
A. Primary aldosteronism causing sodium retention
B. Reduced hepatic clearance of natriuretic peptides
C. Left ventricular wall stretch from volume or pressure overload [CORRECT]
D. Excessive antidiuretic hormone secretion from the posterior pituitary
Correct Answer: C
Rationale: The best answer is left ventricular wall stretch. BNP is released by
cardiomyocytes in response to myocardial stretch from increased ventricular filling
pressures, which is why it rises in heart failure and volume overload states.
Q2: A 45-year-old patient with type 2 diabetes reports numbness and tingling in a
stocking-glove distribution that worsens at night. Which underlying mechanism is
primarily responsible for this presentation?
A. Microvascular ischemia causing demyelination of large motor fibers
B. Chronic hyperglycemia leading to sorbitol accumulation and oxidative nerve damage
[CORRECT]
,C. Autoimmune destruction of Schwann cells
D. Vitamin B12 malabsorption secondary to metformin therapy
Correct Answer: B
Rationale: This choice is correct because diabetic peripheral neuropathy stems from
chronic hyperglycemia triggering the polyol pathway, where excess glucose converts to
sorbitol and fructose, leading to osmotic stress and oxidative damage in peripheral
nerves.
Q3: A patient hospitalized for a COPD exacerbation develops peripheral edema and
elevated jugular venous pressure. Which pathophysiologic process best explains these
new findings?
A. Left heart failure causing pulmonary venous hypertension
B. Hypoxic pulmonary vasoconstriction leading to right ventricular strain [CORRECT]
C. Excessive fluid intake during corticosteroid therapy
D. Alveolar destruction causing decreased oncotic pressure
Correct Answer: B
Rationale: This choice is correct because chronic hypoxia in COPD triggers pulmonary
vasoconstriction, which increases pulmonary artery pressures and places progressive
strain on the right ventricle, producing cor pulmonale with edema and JVD.
Q4: In a patient with newly diagnosed rheumatoid arthritis, which pathophysiologic
finding is most characteristic of the disease process?
A. T-cell mediated destruction of cartilage with IgG antibody formation
B. Synovial inflammation driven by cytokines such as TNF-alpha and IL-6 [CORRECT]
C. Calcium pyrophosphate deposition in joint spaces
D. Uric acid crystal accumulation triggering neutrophil activation
Correct Answer: B
,Rationale: The best answer is synovial inflammation driven by pro-inflammatory
cytokines. RA is fundamentally an autoimmune process where T-cells, B-cells, and
macrophages release TNF-alpha and IL-6, creating pannus formation and progressive
joint erosion.
Q5: A 72-year-old patient presents with sudden right-sided weakness and expressive
aphasia. CT scan shows no hemorrhage. Which cascade of events is most likely
occurring in the affected brain tissue?
A. Vasogenic edema from blood-brain barrier disruption due to chronic hypertension
B. Ischemic core with surrounding penumbra experiencing excitotoxicity and calcium
influx [CORRECT]
C. Amyloid plaque deposition causing neurofibrillary tangles
D. Subarachnoid blood causing vasospasm and delayed cerebral ischemia
Correct Answer: B
Rationale: This choice is correct because acute ischemic stroke creates a central core
of irreversible infarction surrounded by a threatened penumbra where neurons are viable
but injured by glutamate excitotoxicity, calcium overload, and impending energy failure.
Q6: A patient with CKD stage 4 has an eGFR of 22 mL/min. Which pathophysiologic
consequence is most directly related to this level of renal dysfunction?
A. Excessive calcitriol production causing hypercalcemia
B. Inability to concentrate urine and increased risk of hyperkalemia [CORRECT]
C. Increased erythropoietin leading to polycythemia
D. Enhanced phosphate excretion causing hypophosphatemia
Correct Answer: B
Rationale: The best answer is impaired urinary concentration and hyperkalemia risk. As
nephrons are lost, the kidney loses both diluting and concentrating ability while
potassium excretion falters, making hyperkalemia a constant threat in advanced CKD.
, Q7: A 35-year-old patient describes epigastric pain that improves after eating a meal.
Which pathophysiologic process best explains this classic presentation?
A. Gastric acid erosion of duodenal mucosa with impaired bicarbonate secretion
[CORRECT]
B. Reflux of bile salts into the gastric antrum
C. H. pylori-induced destruction of gastric parietal cells
D. Weakness of the lower esophageal sphincter tone
Correct Answer: A
Rationale: This choice is correct because duodenal ulcer pain typically improves with
food, which buffers gastric acid, whereas the underlying problem is excessive acid
exposure overwhelming the duodenum's limited bicarbonate defense.
Q8: In the renin-angiotensin-aldosterone system, which hormone is the primary direct
vasoconstrictor that increases systemic vascular resistance?
A. Renin
B. Angiotensin II [CORRECT]
C. Aldosterone
D. Bradykinin
Correct Answer: B
Rationale: The best answer is angiotensin II. While aldosterone promotes sodium
retention and renin initiates the cascade, angiotensin II is the potent peptide that
directly constricts arteriolar smooth muscle and drives blood pressure upward.
Q9: A patient with multiple sclerosis experiences an exacerbation characterized by
painful vision loss in one eye. Which pathophysiologic process underlies this optic
neuritis?
A. Demyelination of central nervous system axons by autoreactive T-cells and
antibodies [CORRECT]
B. Compression of the optic nerve by a pituitary macroadenoma
C. Ischemic infarction of the occipital cortex
