NR 507 FINAL EXAM (2026/2027) LATEST ACTUAL EXAM WITH 150 QUESTIONS AND
CORRECT ANSWERS (100% CORRECT VERIFIED ANSWERS) | NR 507 ADVANCED
PATHOPHYSIOLOGY ACTUAL FINAL EXAM | CHAMBERLAIN
Chamberlain University NR 507: Advanced Pathophysiology - Final Examination | Core Domains:
Cellular & Molecular Basis of Disease, Immune System Disorders & Inflammation, Genetic Disorders &
Neoplasia, Hematologic & Cardiovascular Pathophysiology, Pulmonary & Renal Pathophysiology,
Endocrine & Metabolic Disorders, Neurological & Musculoskeletal Pathophysiology, and Multisystem
Disorders & Complex Clinical Integration | Advanced Nursing Program Focus | Comprehensive Final
Exam Format
Exam Structure
The NR 507 Final Exam for the 2026/2027 academic cycle at Chamberlain University is a 150-question,
multiple-choice question (MCQ) examination.
Introduction
This NR 507 Final Exam guide for the 2026/2027 cycle prepares advanced nursing students for the
comprehensive assessment of pathophysiological principles across body systems. The content emphasizes
the integration of cellular mechanisms, systemic alterations, and clinical manifestations of disease,
forming the scientific foundation for diagnostic reasoning, therapeutic intervention, and patient
management in advanced practice nursing.
Answer Format
All correct answers and pathophysiological concepts must be presented in bold and green, followed by
detailed rationales that explain disease mechanisms at molecular and systemic levels, connect etiologies
to clinical presentations, predict complications, and integrate knowledge across body systems for
complex, multisystem disorders.
Questions (150 Total)
1. A patient with chronic kidney disease (CKD) develops hyperkalemia. What ECG change is expected?
A. Prolonged QT interval
B. Peaked T waves
C. U waves
D. ST elevation
Rationale: Hyperkalemia initially causes tall, peaked T waves due to accelerated repolarization. As
levels rise, QRS widens, P waves disappear, and ventricular fibrillation may occur. Hypokalemia causes
U waves and flattened T waves. Immediate treatment includes calcium gluconate for cardioprotection.
2. In type 1 diabetes mellitus, hyperglycemia results from:
A. Insulin resistance
,B. Absolute insulin deficiency due to autoimmune beta-cell destruction
C. Excess glucagon secretion only
D. Pancreatic enzyme deficiency
Rationale: Type 1 DM is an autoimmune disorder where T cells destroy pancreatic beta cells, leading
to absolute insulin deficiency. Without insulin, glucose cannot enter cells, causing hyperglycemia,
lipolysis, and ketogenesis. Type 2 involves insulin resistance and relative deficiency.
3. A patient with heart failure has a serum BNP of 450 pg/mL. This indicates:
A. Normal cardiac function
B. Heart failure with reduced ejection fraction (HFrEF)
C. Pulmonary embolism
D. Myocardial infarction without heart failure
Rationale: BNP >100 pg/mL suggests heart failure. Levels >400 pg/mL strongly support HFrEF
diagnosis. BNP is released by ventricles in response to stretch and volume overload. It helps
differentiate cardiac vs. pulmonary causes of dyspnea.
4. Which genetic disorder is caused by trisomy of chromosome 21?
A. Turner syndrome
B. Klinefelter syndrome
C. Down syndrome
D. Cri du chat syndrome
Rationale: Down syndrome (trisomy 21) results from nondisjunction during meiosis, leading to three
copies of chromosome 21. Features include intellectual disability, flat facial profile, and congenital heart
defects. Turner is 45,X; Klinefelter is 47,XXY; Cri du chat is deletion on chromosome 5p.
5. A patient with COPD has an ABG: pH 7.36, PaCO₂ 58 mm Hg, HCO₃⁻ 32 mEq/L. This indicates:
A. Acute respiratory acidosis
B. Chronic respiratory acidosis with renal compensation
C. Metabolic alkalosis
D. Normal ABG
,Rationale: Elevated PaCO₂ with normal pH and elevated HCO₃⁻ indicates chronic respiratory acidosis
(e.g., in stable COPD). Kidneys compensate by retaining bicarbonate over days. Acute respiratory
acidosis would show low pH and normal HCO₃⁻.
6. In multiple sclerosis, demyelination occurs in the:
A. Peripheral nervous system
B. Central nervous system
C. Neuromuscular junction
D. Autonomic ganglia
Rationale: MS is an autoimmune disorder targeting myelin sheaths in the CNS (brain, spinal cord,
optic nerves). Symptoms vary by lesion location (e.g., vision loss, weakness, ataxia). Guillain-Barré
affects the PNS; myasthenia gravis targets the neuromuscular junction.
7. A patient with preeclampsia has a platelet count of 80,000/mm³ and RUQ pain. What complication is
developing?
A. Gestational diabetes
B. HELLP syndrome
C. Placenta previa
D. Ectopic pregnancy
Rationale: HELLP syndrome (Hemolysis, Elevated Liver enzymes, Low Platelets) is a severe variant of
preeclampsia. RUQ or epigastric pain suggests hepatic capsular distension. It is a medical emergency
requiring delivery and supportive care.
8. Osteoporosis is characterized by:
A. Increased bone density
B. Decreased bone mass and microarchitectural deterioration
C. Excessive bone formation
D. Inflammation of joint synovium
Rationale: Osteoporosis results from imbalance between osteoclast (bone resorption) and osteoblast
(bone formation) activity, leading to reduced bone mineral density and increased fracture risk (e.g., hip,
spine). It is distinct from osteoarthritis (joint degeneration) or rheumatoid arthritis (autoimmune
synovitis).
9. The final electron acceptor in aerobic cellular respiration is:
, A. NAD⁺
B. Oxygen
C. Pyruvate
D. Carbon dioxide
Rationale: In the electron transport chain, oxygen accepts electrons and H⁺ to form water. Without
oxygen (anaerobic conditions), fermentation uses pyruvate or acetaldehyde as the acceptor. This step is
essential for maximal ATP yield (~30–32 ATP/glucose).
10. A newborn’s 1-minute Apgar score is 5. What is the priority action?
A. Delay cord clamping
B. Initiate positive-pressure ventilation
C. Administer vitamin K
D. Bathe the infant
Rationale: Apgar ≤6 indicates moderate distress requiring intervention. Per NRP guidelines, initiate
PPV if heart rate <100 or poor respiratory effort. Vitamin K, eye prophylaxis, and bathing occur after
stabilization. Immediate action focuses on airway and breathing.
11. In left-sided heart failure, pulmonary edema occurs due to:
A. Systemic venous congestion
B. Increased pulmonary venous pressure
C. Decreased preload
D. Reduced afterload
Rationale: Left ventricular failure causes blood to back up into the pulmonary circulation, increasing
hydrostatic pressure in pulmonary capillaries. This forces fluid into alveoli, causing dyspnea, crackles,
and hypoxia.
12. Acute tubular necrosis (ATN) is most commonly caused by:
A. Glomerulonephritis
B. Ischemia or nephrotoxins
C. Urinary tract infection
D. Autoimmune disease
CORRECT ANSWERS (100% CORRECT VERIFIED ANSWERS) | NR 507 ADVANCED
PATHOPHYSIOLOGY ACTUAL FINAL EXAM | CHAMBERLAIN
Chamberlain University NR 507: Advanced Pathophysiology - Final Examination | Core Domains:
Cellular & Molecular Basis of Disease, Immune System Disorders & Inflammation, Genetic Disorders &
Neoplasia, Hematologic & Cardiovascular Pathophysiology, Pulmonary & Renal Pathophysiology,
Endocrine & Metabolic Disorders, Neurological & Musculoskeletal Pathophysiology, and Multisystem
Disorders & Complex Clinical Integration | Advanced Nursing Program Focus | Comprehensive Final
Exam Format
Exam Structure
The NR 507 Final Exam for the 2026/2027 academic cycle at Chamberlain University is a 150-question,
multiple-choice question (MCQ) examination.
Introduction
This NR 507 Final Exam guide for the 2026/2027 cycle prepares advanced nursing students for the
comprehensive assessment of pathophysiological principles across body systems. The content emphasizes
the integration of cellular mechanisms, systemic alterations, and clinical manifestations of disease,
forming the scientific foundation for diagnostic reasoning, therapeutic intervention, and patient
management in advanced practice nursing.
Answer Format
All correct answers and pathophysiological concepts must be presented in bold and green, followed by
detailed rationales that explain disease mechanisms at molecular and systemic levels, connect etiologies
to clinical presentations, predict complications, and integrate knowledge across body systems for
complex, multisystem disorders.
Questions (150 Total)
1. A patient with chronic kidney disease (CKD) develops hyperkalemia. What ECG change is expected?
A. Prolonged QT interval
B. Peaked T waves
C. U waves
D. ST elevation
Rationale: Hyperkalemia initially causes tall, peaked T waves due to accelerated repolarization. As
levels rise, QRS widens, P waves disappear, and ventricular fibrillation may occur. Hypokalemia causes
U waves and flattened T waves. Immediate treatment includes calcium gluconate for cardioprotection.
2. In type 1 diabetes mellitus, hyperglycemia results from:
A. Insulin resistance
,B. Absolute insulin deficiency due to autoimmune beta-cell destruction
C. Excess glucagon secretion only
D. Pancreatic enzyme deficiency
Rationale: Type 1 DM is an autoimmune disorder where T cells destroy pancreatic beta cells, leading
to absolute insulin deficiency. Without insulin, glucose cannot enter cells, causing hyperglycemia,
lipolysis, and ketogenesis. Type 2 involves insulin resistance and relative deficiency.
3. A patient with heart failure has a serum BNP of 450 pg/mL. This indicates:
A. Normal cardiac function
B. Heart failure with reduced ejection fraction (HFrEF)
C. Pulmonary embolism
D. Myocardial infarction without heart failure
Rationale: BNP >100 pg/mL suggests heart failure. Levels >400 pg/mL strongly support HFrEF
diagnosis. BNP is released by ventricles in response to stretch and volume overload. It helps
differentiate cardiac vs. pulmonary causes of dyspnea.
4. Which genetic disorder is caused by trisomy of chromosome 21?
A. Turner syndrome
B. Klinefelter syndrome
C. Down syndrome
D. Cri du chat syndrome
Rationale: Down syndrome (trisomy 21) results from nondisjunction during meiosis, leading to three
copies of chromosome 21. Features include intellectual disability, flat facial profile, and congenital heart
defects. Turner is 45,X; Klinefelter is 47,XXY; Cri du chat is deletion on chromosome 5p.
5. A patient with COPD has an ABG: pH 7.36, PaCO₂ 58 mm Hg, HCO₃⁻ 32 mEq/L. This indicates:
A. Acute respiratory acidosis
B. Chronic respiratory acidosis with renal compensation
C. Metabolic alkalosis
D. Normal ABG
,Rationale: Elevated PaCO₂ with normal pH and elevated HCO₃⁻ indicates chronic respiratory acidosis
(e.g., in stable COPD). Kidneys compensate by retaining bicarbonate over days. Acute respiratory
acidosis would show low pH and normal HCO₃⁻.
6. In multiple sclerosis, demyelination occurs in the:
A. Peripheral nervous system
B. Central nervous system
C. Neuromuscular junction
D. Autonomic ganglia
Rationale: MS is an autoimmune disorder targeting myelin sheaths in the CNS (brain, spinal cord,
optic nerves). Symptoms vary by lesion location (e.g., vision loss, weakness, ataxia). Guillain-Barré
affects the PNS; myasthenia gravis targets the neuromuscular junction.
7. A patient with preeclampsia has a platelet count of 80,000/mm³ and RUQ pain. What complication is
developing?
A. Gestational diabetes
B. HELLP syndrome
C. Placenta previa
D. Ectopic pregnancy
Rationale: HELLP syndrome (Hemolysis, Elevated Liver enzymes, Low Platelets) is a severe variant of
preeclampsia. RUQ or epigastric pain suggests hepatic capsular distension. It is a medical emergency
requiring delivery and supportive care.
8. Osteoporosis is characterized by:
A. Increased bone density
B. Decreased bone mass and microarchitectural deterioration
C. Excessive bone formation
D. Inflammation of joint synovium
Rationale: Osteoporosis results from imbalance between osteoclast (bone resorption) and osteoblast
(bone formation) activity, leading to reduced bone mineral density and increased fracture risk (e.g., hip,
spine). It is distinct from osteoarthritis (joint degeneration) or rheumatoid arthritis (autoimmune
synovitis).
9. The final electron acceptor in aerobic cellular respiration is:
, A. NAD⁺
B. Oxygen
C. Pyruvate
D. Carbon dioxide
Rationale: In the electron transport chain, oxygen accepts electrons and H⁺ to form water. Without
oxygen (anaerobic conditions), fermentation uses pyruvate or acetaldehyde as the acceptor. This step is
essential for maximal ATP yield (~30–32 ATP/glucose).
10. A newborn’s 1-minute Apgar score is 5. What is the priority action?
A. Delay cord clamping
B. Initiate positive-pressure ventilation
C. Administer vitamin K
D. Bathe the infant
Rationale: Apgar ≤6 indicates moderate distress requiring intervention. Per NRP guidelines, initiate
PPV if heart rate <100 or poor respiratory effort. Vitamin K, eye prophylaxis, and bathing occur after
stabilization. Immediate action focuses on airway and breathing.
11. In left-sided heart failure, pulmonary edema occurs due to:
A. Systemic venous congestion
B. Increased pulmonary venous pressure
C. Decreased preload
D. Reduced afterload
Rationale: Left ventricular failure causes blood to back up into the pulmonary circulation, increasing
hydrostatic pressure in pulmonary capillaries. This forces fluid into alveoli, causing dyspnea, crackles,
and hypoxia.
12. Acute tubular necrosis (ATN) is most commonly caused by:
A. Glomerulonephritis
B. Ischemia or nephrotoxins
C. Urinary tract infection
D. Autoimmune disease
