NURS 611 Exam 4: Advanced Pathophysiology 2026 |Maryville
1. Which mechanism is primarily responsible for the development of portal
hypertension in patients with cirrhosis?
A. Excessive production of albumin by the liver
B. Decreased pressure in the hepatic vein
C. Fibrosis and formation of regenerative nodules obstructing blood flow
D. Systemic hypotension leading to decreased renal perfusion
Answer: C
Rationale: Cirrhosis causes structural changes such as fibrosis and regenerative nodules
that increase resistance to blood flow through the liver, leading to portal hypertension.
2. In the pathophysiology of acute pancreatitis, what is the initial triggering
event for tissue damage?
A. Hypersecretion of insulin from beta cells
B. Increased clearance of amylase and lipase by the kidneys
C. Bacterial infection of the gallbladder
D. Premature activation of pancreatic proenzymes within the acinar cells
Answer: D
Rationale: Acute pancreatitis begins with the premature activation of trypsinogen to
trypsin within the pancreas, leading to the autodigestion of pancreatic tissue.
,3. Which clinical manifestation is a hallmark of Nephrotic Syndrome due to
increased glomerular permeability?
A. Hematuria with red blood cell casts
B. Oliguria and hypertension
C. Elevated serum albumin levels
D. Proteinuria exceeding 3.5 grams per day
Answer: D
Rationale: Nephrotic syndrome is characterized by massive proteinuria (usually
>3.5g/24h) due to the loss of glomerular membrane integrity.
4. What is the primary pathophysiological defect in Type 2 Diabetes Mellitus?
A. Absolute insulin deficiency due to beta cell destruction
B. Autoimmune destruction of the islets of Langerhans
C. Insulin resistance and relative insulin deficiency
D. Excessive glucose excretion by the kidneys
Answer: C
Rationale: Type 2 DM involves the body’s inability to use insulin effectively (resistance)
combined with a progressive decline in insulin secretion.
5. A patient with Graves’ disease has an enlarged thyroid (goiter) and
exophthalmos. What causes these symptoms?
A. Toxic effects of iodine on the pituitary gland
B. A deficiency in thyroid hormone production
C. Thyroid-stimulating immunoglobulins (TSI) mimicking TSH
D. Destruction of thyroid follicles by T-lymphocytes
Answer: C
Rationale: In Graves’ disease, TSI antibodies bind to TSH receptors on the thyroid gland,
stimulating chronic hormone overproduction and follicular hyperplasia.
, 6. What is the primary cause of the metabolic acidosis seen in Diabetic
Ketoacidosis (DKA)?
A. Production of acetoacetic and beta-hydroxybutyric acids
B. Excessive renal reabsorption of bicarbonate
C. Accumulation of lactic acid due to hypoxia
D. Loss of hydrogen ions through osmotic diuresis
Answer: A
Rationale: In DKA, insulin deficiency leads to lipolysis, which results in the liver producing
ketone bodies (organic acids) that lower blood pH.
7. Which hormone deficiency is responsible for the symptoms of Addison’s
Disease?
A. Antidiuretic hormone and Oxytocin
B. Growth hormone and Prolactin
C. Thyroid hormone and Calcitonin
D. Cortisol and Aldosterone
Answer: D
Rationale: Addison’s disease is primary adrenal insufficiency, characterized by the
inadequate production of glucocorticoids (cortisol) and mineralocorticoids (aldosterone).
8. In SIADH, the clinical presentation of hyponatremia is primarily caused by:
A. Dilutional hyponatremia due to water retention
B. Inadequate intake of dietary sodium
C. Excessive sodium loss in the urine
D. Hypersecretion of atrial natriuretic peptide
Answer: A
Rationale: SIADH involves the excessive release of ADH, which causes the kidneys to
reabsorb too much water, diluting the sodium in the extracellular fluid.
1. Which mechanism is primarily responsible for the development of portal
hypertension in patients with cirrhosis?
A. Excessive production of albumin by the liver
B. Decreased pressure in the hepatic vein
C. Fibrosis and formation of regenerative nodules obstructing blood flow
D. Systemic hypotension leading to decreased renal perfusion
Answer: C
Rationale: Cirrhosis causes structural changes such as fibrosis and regenerative nodules
that increase resistance to blood flow through the liver, leading to portal hypertension.
2. In the pathophysiology of acute pancreatitis, what is the initial triggering
event for tissue damage?
A. Hypersecretion of insulin from beta cells
B. Increased clearance of amylase and lipase by the kidneys
C. Bacterial infection of the gallbladder
D. Premature activation of pancreatic proenzymes within the acinar cells
Answer: D
Rationale: Acute pancreatitis begins with the premature activation of trypsinogen to
trypsin within the pancreas, leading to the autodigestion of pancreatic tissue.
,3. Which clinical manifestation is a hallmark of Nephrotic Syndrome due to
increased glomerular permeability?
A. Hematuria with red blood cell casts
B. Oliguria and hypertension
C. Elevated serum albumin levels
D. Proteinuria exceeding 3.5 grams per day
Answer: D
Rationale: Nephrotic syndrome is characterized by massive proteinuria (usually
>3.5g/24h) due to the loss of glomerular membrane integrity.
4. What is the primary pathophysiological defect in Type 2 Diabetes Mellitus?
A. Absolute insulin deficiency due to beta cell destruction
B. Autoimmune destruction of the islets of Langerhans
C. Insulin resistance and relative insulin deficiency
D. Excessive glucose excretion by the kidneys
Answer: C
Rationale: Type 2 DM involves the body’s inability to use insulin effectively (resistance)
combined with a progressive decline in insulin secretion.
5. A patient with Graves’ disease has an enlarged thyroid (goiter) and
exophthalmos. What causes these symptoms?
A. Toxic effects of iodine on the pituitary gland
B. A deficiency in thyroid hormone production
C. Thyroid-stimulating immunoglobulins (TSI) mimicking TSH
D. Destruction of thyroid follicles by T-lymphocytes
Answer: C
Rationale: In Graves’ disease, TSI antibodies bind to TSH receptors on the thyroid gland,
stimulating chronic hormone overproduction and follicular hyperplasia.
, 6. What is the primary cause of the metabolic acidosis seen in Diabetic
Ketoacidosis (DKA)?
A. Production of acetoacetic and beta-hydroxybutyric acids
B. Excessive renal reabsorption of bicarbonate
C. Accumulation of lactic acid due to hypoxia
D. Loss of hydrogen ions through osmotic diuresis
Answer: A
Rationale: In DKA, insulin deficiency leads to lipolysis, which results in the liver producing
ketone bodies (organic acids) that lower blood pH.
7. Which hormone deficiency is responsible for the symptoms of Addison’s
Disease?
A. Antidiuretic hormone and Oxytocin
B. Growth hormone and Prolactin
C. Thyroid hormone and Calcitonin
D. Cortisol and Aldosterone
Answer: D
Rationale: Addison’s disease is primary adrenal insufficiency, characterized by the
inadequate production of glucocorticoids (cortisol) and mineralocorticoids (aldosterone).
8. In SIADH, the clinical presentation of hyponatremia is primarily caused by:
A. Dilutional hyponatremia due to water retention
B. Inadequate intake of dietary sodium
C. Excessive sodium loss in the urine
D. Hypersecretion of atrial natriuretic peptide
Answer: A
Rationale: SIADH involves the excessive release of ADH, which causes the kidneys to
reabsorb too much water, diluting the sodium in the extracellular fluid.
