NR507 MIDTERM EXAM 2026 ADVANCED PATHOPHYSIOLOGY EXAM QUESTIONS AND CORRECT ANSWERS WITH RATIONALE A+ GRADE ASSURED !!!!!!NEW LATEST UPDATE!!!!!

NR507 MIDTERM EXAM 2026 ADVA xl xl xl xl




NCED PATHOPHYSIOLOGY EXAM xl xl xl




QUESTIONS AND CORRECT ANSW xl xl xl




ERS WITH RATIONALES GRADED A xl xl xl xl




+ LATEST xl




1. A 62-year-
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old male presents with fatigue, weight loss, and a persistent cough. Imaging reve
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als a mass in the right lung. Biopsy shows malignant cells producing parathyroid
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hormone-
related peptide (PTHrP). Which paraneoplastic syndrome is most likely presen
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t?
A. SIADH
B. Hypercalcemia
C. Cushing syndrome xl




D. Lambert-Eaton syndrome xl




Answer: B xl




Rationale:PTHrP secretion causes increased bone resorption and hypercalcemia. SI
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ADH is associated with ectopic ADH secretion (often small cell lung cancer). Cushi
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ng syndrome results from ectopic ACTH production. Lambert-
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Eaton is associated with neuromuscular weakness due to autoantibodies affecting
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presynaptic calcium channels. xl xl

,2. A patient has chronic GERD. Which cellular adaptation is most likely to occur
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in the lower esophagus?
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A. Dysplasia
B. Metaplasia
C. Hypertrophy
D. Hyperplasia
Answer: B xl




Rationale:Chronic acid exposure leads to replacement of squamous epithelium with c
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olumnar epithelium (Barrett esophagus), a classic example of metaplasia.
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3. A 35-year-
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oldwoman presents with sudden onset of shortness ofbreath and pleuritic chest p
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ain. She has a history of deep vein thrombosis. Which pathophysiologic mechani
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sm best explains her symptoms?
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A. Bronchoconstriction due to mast cell activation xl xl xl xl xl




B. Alveolar collapse due to surfactant deficiency xl xl xl xl xl




C. Pulmonary vascular obstruction leading to V/Q mismatch xl xl xl xl xl xl




D. Infection causing inflammation of the pleura xl xl xl xl xl




Answer: C xl




Rationale:Pulmonary embolism causes obstruction of pulmonary arteries, resulting
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in impaired perfusion of ventilated alveoli, causing a ventilation-
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perfusion (V/Q) mismatch and hypoxemia.
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4. A patient with untreated type 1 diabetes presents with nausea, abdominal pai
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n, fruity breath, and Kussmaul respirations. Which acid-
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base disturbance is most likely?
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A. Respiratory alkalosis xl




B. Metabolic alkalosis xl




C. Respiratory acidosis xl




D. Metabolic acidosis xl

,Answer: D xl




Rationale:DKA causes increased ketone production,leading to metabolic acidosis.
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Kussmaul respirations are a compensatory response. xl x l xl xl xl




5. A 48-year-
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oldmale presents with severe abdominal pain radiating to the back, elevated seru
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m amylase and lipase, and a history of alcohol abuse. Which mechanism is respo
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nsible for his condition? xl xl xl




A. Autoimmune destruction of pancreatic beta cells xl xl xl xl xl




B. Activation of pancreatic enzymes within the pancreas xl xl xl xl xl xl




C. Obstruction of the common bile duct xl xl xl xl xl




D. Viral infection of pancreatic tissue xl xl xl xl




Answer: B xl




Rationale:Acute pancreatitis is caused by premature activation of pancreatic enzym
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es, leading to autodigestion and inflammation.
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6. A patient develops sudden right-
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sided weakness and aphasia. CT scan reveals an ischemic stroke in the left middl
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e cerebralartery territory. Which mechanism best explains the neurologic defi
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cits?
A. Increased intracranial pressure xl x l




B. Ischemia leading to neuronal death xl xl xl xl




C. Demyelination of motor neurons x l xl xl




D. Autoimmune destruction of synapses x l xl xl




Answer: B xl




Rationale:Ischemic stroke causes decreased blood flow, leading to oxygen deprivation,
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ATP depletion, and neuronal cell death.
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, 7. A patient with chronic kidney disease develops anemia. Which mechanism be
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st explains the anemia?
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A. Reducederythropoietin production xl xl




B. Increased hemolysis xl




C. Iron overload xl




D. Increased platelet destruction xl x l




Answer: A xl




Rationale:Kidneys produceerythropoietin; chronic kidney disease reduces erythropoiet
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in, leading to decreased RBC production and anemia.
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8. A 27-year-
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old woman presents with fatigue, cold intolerance, constipation, and weightgain
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. Lab results show elevatedTSH and low T4. What is the most likely diagnosis?
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A. Hyperthyroidism
B. Hypothyroidism
C. Cushing syndrome xl




D. Addison disease xl




Answer: B xl




Rationale:Elevated TSH with low T4 indicates primary hypothyroidism.
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9. A patient presents with chronic inflammation and tissue remodeling in the air
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ways, leading to airflow obstruction and hyperresponsiveness. Which disease
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process is most consistent with these findings?
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A. COPD
B. Asthma
C. Pulmonary fibrosis xl




D. Bronchiectasis
Answer: B xl




Rationale:Asthma is characterized bychronic airway inflammation, hyperresponsivenes
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s, and reversible airflow obstruction.
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