NR-507 ADVANCED PATHOPHYSIOLOGY FINAL EXAM] QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027 Chamberlain University.
Core Domains:
Cellular and Molecular Pathophysiology
Immunology and Inflammation
Neurological and Neuromuscular Pathophysiology
Cardiovascular and Hematologic Pathophysiology
Pulmonary and Renal Pathophysiology
Gastrointestinal and Endocrine Pathophysiology
Ethical, Legal, and Professional Standards in Advanced Practice
Pharmacological and Therapeutic Interventions
Genetics, Epigenetics, and Environmental Factors
Introduction:
This comprehensive examination is designed to evaluate the advanced practice nursing student's mastery of
complex pathophysiological concepts and their application to clinical decision-making. The assessment covers
foundational scientific principles, systems-based disorders, and the integration of ethical and professional
standards within the context of patient management. Questions are presented in a multiple-choice and scenario-
based format, emphasizing the critical analysis of clinical presentations, diagnostic reasoning, and the selection of
appropriate interventions. Successful completion of this exam reflects the student's readiness to apply advanced
,pathophysiology knowledge to ensure safe, effective, and evidence-based patient care across diverse healthcare
settings.
SECTION ONE: QUESTIONS 1-100
Question 1
A 55-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with worsening
dyspnea and a new onset of peripheral edema. An arterial blood gas reveals a pH of 7.31, PaCO2 of 68 mmHg,
and HCO3- of 32 mEq/L. Which of the following is the most accurate interpretation of this patient's acid-base
status?
A. Metabolic acidosis with respiratory compensation
B. Respiratory acidosis with metabolic compensation
C. Metabolic alkalosis with respiratory compensation
D. Respiratory acidosis with renal compensation
🟢 D. Respiratory acidosis with renal compensation
🔴 RATIONALE: The primary disturbance is respiratory acidosis as indicated by an elevated PaCO2 (hypercapnia)
and decreased pH. The elevated bicarbonate (HCO3-) suggests a compensatory metabolic alkalosis, a renal
response to chronic hypercapnia. Option B states "metabolic compensation," but "renal compensation" is more
precise as the kidneys are the organ responsible for this compensation.
Question 2
A patient with a known history of HIV infection is admitted with a fever, non-productive cough, and diffuse
bilateral infiltrates on chest radiograph. A bronchial lavage reveals Pneumocystis jirovecii. Which of the following
best describes the underlying immunologic mechanism that predisposes this patient to this opportunistic
infection?
A. Impaired humoral immunity and decreased immunoglobulin production
B. A deficiency in complement components, specifically C3 and C5
,C. A significant reduction in CD4+ T-helper lymphocytes
D. An overactive cytotoxic T-cell response leading to tissue damage
🟢 C. A significant reduction in CD4+ T-helper lymphocytes
🔴 RATIONALE: HIV targets and depletes CD4+ T-helper cells, which are crucial for orchestrating the immune
response against intracellular pathogens like Pneumocystis jirovecii. A CD4+ count below 200 cells/mm³ is a
major risk factor for this infection. This is a classic example of a cell-mediated immunodeficiency.
Question 3
A 45-year-old female presents with fatigue, cold intolerance, and weight gain. A physical exam reveals
bradycardia, dry skin, and a non-pitting edema of her face and hands. Laboratory results show an elevated TSH
and a low free T4. Which of the following is the most likely underlying pathophysiological mechanism for her
condition?
A. An autoimmune destruction of the thyroid gland leading to primary hypothyroidism
B. A failure of the anterior pituitary to secrete TSH
C. A lack of TRH production from the hypothalamus
D. An inhibition of peripheral conversion of T4 to T3
🟢 A. An autoimmune destruction of the thyroid gland leading to primary hypothyroidism
🔴 RATIONALE: The patient's presentation of fatigue, cold intolerance, weight gain, elevated TSH, and low free
T4 is classic for primary hypothyroidism. The most common cause is autoimmune thyroiditis (Hashimoto's
disease), where the thyroid gland is gradually destroyed, leading to decreased hormone production. The
elevated TSH indicates the pituitary is attempting to stimulate a failing gland.
Question 4
A 70-year-old male is hospitalized for a hip fracture after a fall. On the third day of admission, he becomes
acutely confused and restless. His vital signs are: temperature 37.2°C (99.0°F), HR 96 bpm, RR 18/min, BP 148/90
mmHg. Physical exam reveals a petechial rash on his chest and a palpable, tender right calf. A CT head is
, unremarkable. Which of the following is the most likely diagnosis?
A. Acute ischemic stroke
B. Delirium due to pulmonary embolism
C. Wernicke-Korsakoff syndrome
D. Hyponatremia from excess IV fluids
🟢 B. Delirium due to pulmonary embolism
🔴 RATIONALE: The patient has multiple risk factors for venous thromboembolism (immobility, surgery,
advanced age). The sudden onset of delirium, tachycardia, hypertension, and a petechial rash (which can be
associated with fat embolism or consumptive coagulopathy) in the context of a tender, palpable calf suggests a
pulmonary embolism (PE). While delirium is non-specific, a PE is a life-threatening cause that fits this clinical
picture.
Question 5
A 28-year-old woman in her 32nd week of gestation presents with a sudden onset of severe headache, blurred
vision, and epigastric pain. Her blood pressure is 165/105 mmHg, and she has 3+ proteinuria on a urine
dipstick. Her platelet count is 98,000/mm³, and liver function tests are elevated. Which of the following is the
most likely underlying pathophysiological process?
A. HELLP syndrome, characterized by hemolysis, elevated liver enzymes, and low platelets
B. A diagnosis of eclampsia, requiring immediate seizure prophylaxis
C. Atypical hemolytic uremic syndrome (aHUS) triggered by pregnancy
D. Acute fatty liver of pregnancy (AFLP) with secondary coagulopathy
🟢 A. HELLP syndrome, characterized by hemolysis, elevated liver enzymes, and low platelets
🔴 RATIONALE: The patient's presentation of severe preeclampsia (hypertension and proteinuria) coupled with
thrombocytopenia and elevated liver enzymes is classic for HELLP syndrome. This syndrome is a severe form of
preeclampsia and is a major cause of maternal morbidity and mortality. Management involves stabilization and
prompt delivery.
ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027 Chamberlain University.
Core Domains:
Cellular and Molecular Pathophysiology
Immunology and Inflammation
Neurological and Neuromuscular Pathophysiology
Cardiovascular and Hematologic Pathophysiology
Pulmonary and Renal Pathophysiology
Gastrointestinal and Endocrine Pathophysiology
Ethical, Legal, and Professional Standards in Advanced Practice
Pharmacological and Therapeutic Interventions
Genetics, Epigenetics, and Environmental Factors
Introduction:
This comprehensive examination is designed to evaluate the advanced practice nursing student's mastery of
complex pathophysiological concepts and their application to clinical decision-making. The assessment covers
foundational scientific principles, systems-based disorders, and the integration of ethical and professional
standards within the context of patient management. Questions are presented in a multiple-choice and scenario-
based format, emphasizing the critical analysis of clinical presentations, diagnostic reasoning, and the selection of
appropriate interventions. Successful completion of this exam reflects the student's readiness to apply advanced
,pathophysiology knowledge to ensure safe, effective, and evidence-based patient care across diverse healthcare
settings.
SECTION ONE: QUESTIONS 1-100
Question 1
A 55-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with worsening
dyspnea and a new onset of peripheral edema. An arterial blood gas reveals a pH of 7.31, PaCO2 of 68 mmHg,
and HCO3- of 32 mEq/L. Which of the following is the most accurate interpretation of this patient's acid-base
status?
A. Metabolic acidosis with respiratory compensation
B. Respiratory acidosis with metabolic compensation
C. Metabolic alkalosis with respiratory compensation
D. Respiratory acidosis with renal compensation
🟢 D. Respiratory acidosis with renal compensation
🔴 RATIONALE: The primary disturbance is respiratory acidosis as indicated by an elevated PaCO2 (hypercapnia)
and decreased pH. The elevated bicarbonate (HCO3-) suggests a compensatory metabolic alkalosis, a renal
response to chronic hypercapnia. Option B states "metabolic compensation," but "renal compensation" is more
precise as the kidneys are the organ responsible for this compensation.
Question 2
A patient with a known history of HIV infection is admitted with a fever, non-productive cough, and diffuse
bilateral infiltrates on chest radiograph. A bronchial lavage reveals Pneumocystis jirovecii. Which of the following
best describes the underlying immunologic mechanism that predisposes this patient to this opportunistic
infection?
A. Impaired humoral immunity and decreased immunoglobulin production
B. A deficiency in complement components, specifically C3 and C5
,C. A significant reduction in CD4+ T-helper lymphocytes
D. An overactive cytotoxic T-cell response leading to tissue damage
🟢 C. A significant reduction in CD4+ T-helper lymphocytes
🔴 RATIONALE: HIV targets and depletes CD4+ T-helper cells, which are crucial for orchestrating the immune
response against intracellular pathogens like Pneumocystis jirovecii. A CD4+ count below 200 cells/mm³ is a
major risk factor for this infection. This is a classic example of a cell-mediated immunodeficiency.
Question 3
A 45-year-old female presents with fatigue, cold intolerance, and weight gain. A physical exam reveals
bradycardia, dry skin, and a non-pitting edema of her face and hands. Laboratory results show an elevated TSH
and a low free T4. Which of the following is the most likely underlying pathophysiological mechanism for her
condition?
A. An autoimmune destruction of the thyroid gland leading to primary hypothyroidism
B. A failure of the anterior pituitary to secrete TSH
C. A lack of TRH production from the hypothalamus
D. An inhibition of peripheral conversion of T4 to T3
🟢 A. An autoimmune destruction of the thyroid gland leading to primary hypothyroidism
🔴 RATIONALE: The patient's presentation of fatigue, cold intolerance, weight gain, elevated TSH, and low free
T4 is classic for primary hypothyroidism. The most common cause is autoimmune thyroiditis (Hashimoto's
disease), where the thyroid gland is gradually destroyed, leading to decreased hormone production. The
elevated TSH indicates the pituitary is attempting to stimulate a failing gland.
Question 4
A 70-year-old male is hospitalized for a hip fracture after a fall. On the third day of admission, he becomes
acutely confused and restless. His vital signs are: temperature 37.2°C (99.0°F), HR 96 bpm, RR 18/min, BP 148/90
mmHg. Physical exam reveals a petechial rash on his chest and a palpable, tender right calf. A CT head is
, unremarkable. Which of the following is the most likely diagnosis?
A. Acute ischemic stroke
B. Delirium due to pulmonary embolism
C. Wernicke-Korsakoff syndrome
D. Hyponatremia from excess IV fluids
🟢 B. Delirium due to pulmonary embolism
🔴 RATIONALE: The patient has multiple risk factors for venous thromboembolism (immobility, surgery,
advanced age). The sudden onset of delirium, tachycardia, hypertension, and a petechial rash (which can be
associated with fat embolism or consumptive coagulopathy) in the context of a tender, palpable calf suggests a
pulmonary embolism (PE). While delirium is non-specific, a PE is a life-threatening cause that fits this clinical
picture.
Question 5
A 28-year-old woman in her 32nd week of gestation presents with a sudden onset of severe headache, blurred
vision, and epigastric pain. Her blood pressure is 165/105 mmHg, and she has 3+ proteinuria on a urine
dipstick. Her platelet count is 98,000/mm³, and liver function tests are elevated. Which of the following is the
most likely underlying pathophysiological process?
A. HELLP syndrome, characterized by hemolysis, elevated liver enzymes, and low platelets
B. A diagnosis of eclampsia, requiring immediate seizure prophylaxis
C. Atypical hemolytic uremic syndrome (aHUS) triggered by pregnancy
D. Acute fatty liver of pregnancy (AFLP) with secondary coagulopathy
🟢 A. HELLP syndrome, characterized by hemolysis, elevated liver enzymes, and low platelets
🔴 RATIONALE: The patient's presentation of severe preeclampsia (hypertension and proteinuria) coupled with
thrombocytopenia and elevated liver enzymes is classic for HELLP syndrome. This syndrome is a severe form of
preeclampsia and is a major cause of maternal morbidity and mortality. Management involves stabilization and
prompt delivery.
