NSG530 Exam 4 V2 | NSG 530 Advanced
Pathophysiology | Wilkes University
1. A patient presents with massive proteinuria exceeding 3.5g per day, hypoalbuminemia,
and generalized edema. Which condition is the most likely cause of these clinical
manifestations?
A. Nephritic Syndrome
B. Acute Tubular Necrosis
C. Nephrotic Syndrome
D. Pyelonephritis
Answer: C
Rationale: Nephrotic syndrome is defined by massive proteinuria due to increased
glomerular permeability. This protein loss leads to hypoalbuminemia, which decreases
plasma oncotic pressure and results in systemic edema. The kidneys’ inability to maintain
the filtration barrier is the primary pathophysiological driver in this condition.
2. In the pathogenesis of Rheumatoid Arthritis (RA), what is the primary role of the pannus?
A. It is highly vascularized granulation tissue that invades and destroys cartilage.
B. It acts as a protective layer over the synovial membrane.
C. It stimulates the production of synovial fluid to lubricate joints.
,D. It facilitates the absorption of uric acid crystals in the joint.
Answer: A
Rationale: The pannus is an abnormal layer of fibrovascular tissue or granulation tissue
that forms over the joint surface in RA. It contains inflammatory cells that release enzymes
like collagenase, leading to the destruction of articular cartilage and bone erosion. This
invasive growth is a hallmark of chronic inflammatory joint destruction in rheumatoid
disease.
3. A patient with chronic kidney disease (CKD) develops hyperkalemia. Which of the following
is the most significant physiological consequence of this electrolyte disturbance?
A. Increased intestinal absorption of calcium
B. Cardiac dysrhythmias and potential cardiac arrest
C. Neuromuscular excitability leading to tetany
D. Enhanced production of erythropoietin
Answer: B
Rationale: Hyperkalemia is one of the most dangerous complications of renal failure
because the kidneys are the primary route for potassium excretion. High serum potassium
levels alter the resting membrane potential of cardiac myocytes, potentially leading to
lethal arrhythmias. Monitoring ECG changes is critical in managing patients with advanced
renal dysfunction.
, 4. Which hormone is primarily responsible for the development of insulin resistance and
hyperandrogenism in Polycystic Ovary Syndrome (PCOS)?
A. Progesterone
B. Follicle-Stimulating Hormone (FSH)
C. Prolactin
D. Insulin
Answer: D
Rationale: Insulin plays a central role in PCOS by stimulating androgen production from
the ovarian theca cells. High levels of insulin also decrease the production of sex hormone-
binding globulin, which increases the amount of free testosterone in the blood. This
hyperinsulinemia is a key driver of the clinical features seen in affected women.
5. Osteoporosis is characterized by an imbalance in bone remodeling. Which signaling
pathway is most critical in promoting osteoclast activity and bone resorption?
A. Wnt/beta-catenin pathway
B. RANK/RANKL pathway
C. Calcitonin signaling
D. Thyroid hormone feedback
Answer: B
Pathophysiology | Wilkes University
1. A patient presents with massive proteinuria exceeding 3.5g per day, hypoalbuminemia,
and generalized edema. Which condition is the most likely cause of these clinical
manifestations?
A. Nephritic Syndrome
B. Acute Tubular Necrosis
C. Nephrotic Syndrome
D. Pyelonephritis
Answer: C
Rationale: Nephrotic syndrome is defined by massive proteinuria due to increased
glomerular permeability. This protein loss leads to hypoalbuminemia, which decreases
plasma oncotic pressure and results in systemic edema. The kidneys’ inability to maintain
the filtration barrier is the primary pathophysiological driver in this condition.
2. In the pathogenesis of Rheumatoid Arthritis (RA), what is the primary role of the pannus?
A. It is highly vascularized granulation tissue that invades and destroys cartilage.
B. It acts as a protective layer over the synovial membrane.
C. It stimulates the production of synovial fluid to lubricate joints.
,D. It facilitates the absorption of uric acid crystals in the joint.
Answer: A
Rationale: The pannus is an abnormal layer of fibrovascular tissue or granulation tissue
that forms over the joint surface in RA. It contains inflammatory cells that release enzymes
like collagenase, leading to the destruction of articular cartilage and bone erosion. This
invasive growth is a hallmark of chronic inflammatory joint destruction in rheumatoid
disease.
3. A patient with chronic kidney disease (CKD) develops hyperkalemia. Which of the following
is the most significant physiological consequence of this electrolyte disturbance?
A. Increased intestinal absorption of calcium
B. Cardiac dysrhythmias and potential cardiac arrest
C. Neuromuscular excitability leading to tetany
D. Enhanced production of erythropoietin
Answer: B
Rationale: Hyperkalemia is one of the most dangerous complications of renal failure
because the kidneys are the primary route for potassium excretion. High serum potassium
levels alter the resting membrane potential of cardiac myocytes, potentially leading to
lethal arrhythmias. Monitoring ECG changes is critical in managing patients with advanced
renal dysfunction.
, 4. Which hormone is primarily responsible for the development of insulin resistance and
hyperandrogenism in Polycystic Ovary Syndrome (PCOS)?
A. Progesterone
B. Follicle-Stimulating Hormone (FSH)
C. Prolactin
D. Insulin
Answer: D
Rationale: Insulin plays a central role in PCOS by stimulating androgen production from
the ovarian theca cells. High levels of insulin also decrease the production of sex hormone-
binding globulin, which increases the amount of free testosterone in the blood. This
hyperinsulinemia is a key driver of the clinical features seen in affected women.
5. Osteoporosis is characterized by an imbalance in bone remodeling. Which signaling
pathway is most critical in promoting osteoclast activity and bone resorption?
A. Wnt/beta-catenin pathway
B. RANK/RANKL pathway
C. Calcitonin signaling
D. Thyroid hormone feedback
Answer: B
