NURS6501 ACTUAL WEEK 6 MIDTERM EXAM 2024. 100 CORRECTLY ANSWERED QUESTIONS. VERIFIED EXAM
GRADED A+ WINTER QUARTER WALDEN UNIVERSITY
Core Domains
- Cellular and Molecular Pathophysiology
- Inflammation and Immunity
- Genetics and Epigenetics
- Fluid and Electrolyte Balance
- Acid-Base Homeostasis
- Cardiovascular Pathophysiology
- Respiratory Pathophysiology
- Renal and Urinary Pathophysiology
- Endocrine Pathophysiology
- Neurologic Pathophysiology
Introduction
*This comprehensive examination assesses the advanced practice nurse’s mastery of foundational and applied
concepts in advanced pathophysiology. It evaluates the ability to integrate cellular, genetic, and systemic
mechanisms of disease with clinical presentations, diagnostic reasoning, and evidence-based decision-making.
The 200 multiple-choice questions (presented in two sections) include standalone knowledge items and
scenario-based clinical vignettes that emphasize real-world application, ethical considerations, regulatory
frameworks, and professional standards. Each question is followed by a clear rationale. This format ensures
readiness for high-stakes certification and clinical practice.*
,SECTION ONE – QUESTIONS 1–100
Question 1
A 45-year-old male presents with fatigue, pallor, and glossitis. Laboratory findings show macrocytic anemia with
hypersegmented neutrophils. Which cellular mechanism best explains these findings?
A. Impaired heme synthesis due to iron deficiency
B. Decreased erythropoietin production from renal disease
C. Defective DNA synthesis from vitamin B12 deficiency
D. Accelerated red blood cell destruction from membrane defect
🟢C
🔴 RATIONALE: Macrocytic anemia with hypersegmented neutrophils is characteristic of vitamin B12 or folate
deficiency, both of which impair thymidine synthesis, slowing nuclear maturation while cytoplasmic
development continues, resulting in large, immature RBCs.
Question 2
A 60-year-old female with osteoarthritis develops acute swelling and pain in her right knee after a fall.
Aspiration reveals bloody fluid with fat globules. What is the most likely diagnosis?
A. Septic arthritis
B. Gouty arthritis
C. Hemarthrosis with fracture
D. Pseudogout
🟢C
,🔴 RATIONALE: Fat globules in bloody joint fluid after trauma indicate a fracture with bone marrow fat entering
the joint space, most commonly from tibial plateau or femoral condyle fractures.
Question 3
Which statement correctly describes the role of the sodium-potassium ATPase pump in maintaining resting
membrane potential?
A. It moves 2 sodium ions out and 3 potassium ions in, making the cell interior negative
B. It moves 3 sodium ions out and 2 potassium ions in, contributing to a negative resting potential
C. It moves equal sodium and potassium ions, maintaining electrical neutrality
D. It moves chloride ions into the cell to hyperpolarize the membrane
🟢B
🔴 RATIONALE: The Na+/K+ ATPase actively transports 3 Na+ out and 2 K+ in per ATP, generating an
electrochemical gradient that contributes to the negative resting membrane potential (approximately -70 mV).
Question 4
A newborn presents with respiratory distress, poor feeding, and a screening test showing elevated 17-
hydroxyprogesterone. Which genetic inheritance pattern is most likely?
A. Autosomal dominant
B. X-linked recessive
C. Autosomal recessive
D. Mitochondrial inheritance
🟢C
, 🔴 RATIONALE: Elevated 17-hydroxyprogesterone points to 21-hydroxylase deficiency causing congenital
adrenal hyperplasia, an autosomal recessive disorder due to mutations in CYP21A2.
Question 5
A 72-year-old man with heart failure develops hyponatremia (Na 122 mEq/L) after starting hydrochlorothiazide.
He is asymptomatic. What is the most appropriate next step?
A. Intravenous hypertonic saline
B. Fluid restriction and discontinuation of thiazide
C. Oral salt tablets
D. Intravenous conivaptan
🟢B
🔴 RATIONALE: Thiazide-induced hyponatremia in asymptomatic patients is managed by stopping the
offending drug and restricting free water; hypertonic saline is reserved for severe symptoms.
Question 6
During inflammation, which endothelial adhesion molecule is primarily responsible for the firm adhesion of
neutrophils before diapedesis?
A. Selectin
B. Integrin
C. ICAM-1 binding to CD18 integrins
D. PECAM-1
🟢C
GRADED A+ WINTER QUARTER WALDEN UNIVERSITY
Core Domains
- Cellular and Molecular Pathophysiology
- Inflammation and Immunity
- Genetics and Epigenetics
- Fluid and Electrolyte Balance
- Acid-Base Homeostasis
- Cardiovascular Pathophysiology
- Respiratory Pathophysiology
- Renal and Urinary Pathophysiology
- Endocrine Pathophysiology
- Neurologic Pathophysiology
Introduction
*This comprehensive examination assesses the advanced practice nurse’s mastery of foundational and applied
concepts in advanced pathophysiology. It evaluates the ability to integrate cellular, genetic, and systemic
mechanisms of disease with clinical presentations, diagnostic reasoning, and evidence-based decision-making.
The 200 multiple-choice questions (presented in two sections) include standalone knowledge items and
scenario-based clinical vignettes that emphasize real-world application, ethical considerations, regulatory
frameworks, and professional standards. Each question is followed by a clear rationale. This format ensures
readiness for high-stakes certification and clinical practice.*
,SECTION ONE – QUESTIONS 1–100
Question 1
A 45-year-old male presents with fatigue, pallor, and glossitis. Laboratory findings show macrocytic anemia with
hypersegmented neutrophils. Which cellular mechanism best explains these findings?
A. Impaired heme synthesis due to iron deficiency
B. Decreased erythropoietin production from renal disease
C. Defective DNA synthesis from vitamin B12 deficiency
D. Accelerated red blood cell destruction from membrane defect
🟢C
🔴 RATIONALE: Macrocytic anemia with hypersegmented neutrophils is characteristic of vitamin B12 or folate
deficiency, both of which impair thymidine synthesis, slowing nuclear maturation while cytoplasmic
development continues, resulting in large, immature RBCs.
Question 2
A 60-year-old female with osteoarthritis develops acute swelling and pain in her right knee after a fall.
Aspiration reveals bloody fluid with fat globules. What is the most likely diagnosis?
A. Septic arthritis
B. Gouty arthritis
C. Hemarthrosis with fracture
D. Pseudogout
🟢C
,🔴 RATIONALE: Fat globules in bloody joint fluid after trauma indicate a fracture with bone marrow fat entering
the joint space, most commonly from tibial plateau or femoral condyle fractures.
Question 3
Which statement correctly describes the role of the sodium-potassium ATPase pump in maintaining resting
membrane potential?
A. It moves 2 sodium ions out and 3 potassium ions in, making the cell interior negative
B. It moves 3 sodium ions out and 2 potassium ions in, contributing to a negative resting potential
C. It moves equal sodium and potassium ions, maintaining electrical neutrality
D. It moves chloride ions into the cell to hyperpolarize the membrane
🟢B
🔴 RATIONALE: The Na+/K+ ATPase actively transports 3 Na+ out and 2 K+ in per ATP, generating an
electrochemical gradient that contributes to the negative resting membrane potential (approximately -70 mV).
Question 4
A newborn presents with respiratory distress, poor feeding, and a screening test showing elevated 17-
hydroxyprogesterone. Which genetic inheritance pattern is most likely?
A. Autosomal dominant
B. X-linked recessive
C. Autosomal recessive
D. Mitochondrial inheritance
🟢C
, 🔴 RATIONALE: Elevated 17-hydroxyprogesterone points to 21-hydroxylase deficiency causing congenital
adrenal hyperplasia, an autosomal recessive disorder due to mutations in CYP21A2.
Question 5
A 72-year-old man with heart failure develops hyponatremia (Na 122 mEq/L) after starting hydrochlorothiazide.
He is asymptomatic. What is the most appropriate next step?
A. Intravenous hypertonic saline
B. Fluid restriction and discontinuation of thiazide
C. Oral salt tablets
D. Intravenous conivaptan
🟢B
🔴 RATIONALE: Thiazide-induced hyponatremia in asymptomatic patients is managed by stopping the
offending drug and restricting free water; hypertonic saline is reserved for severe symptoms.
Question 6
During inflammation, which endothelial adhesion molecule is primarily responsible for the firm adhesion of
neutrophils before diapedesis?
A. Selectin
B. Integrin
C. ICAM-1 binding to CD18 integrins
D. PECAM-1
🟢C
