NURS 6501N Final Exam V2 | NURS 6501N
Advanced Pathophysiology | Actual Q&A
with Rationale (NURS6501N Final Exam) |
Walden University
1. A patient presents with severe hypotension and decreased urine output. Which type of
Acute Kidney Injury (AKI) is most likely occurring?
A. Intrarenal AKI
B. Chronic Renal Failure
C. Postrenal AKI
D. Prerenal AKI
Answer: D
Rationale: Prerenal AKI is caused by decreased blood flow to the kidney, which often
occurs during episodes of severe hypotension or dehydration. This decrease in perfusion
leads to a drop in the glomerular filtration rate despite the kidney tissue being initially
healthy. Proper restoration of blood pressure is essential to prevent progress to intrinsic
renal damage.
2. Which clinical manifestation is most characteristic of right-sided heart failure?
A. Pulmonary edema
B. Peripheral edema and jugular venous distention
,C. Dyspnea on exertion
D. Crackles in the lung bases
Answer: B
Rationale: Right-sided heart failure occurs when the right ventricle fails to pump blood
effectively into the pulmonary circulation. This leads to a backup of blood in the systemic
venous system, causing symptoms like hepatomegaly and peripheral edema. In contrast,
pulmonary symptoms are more commonly associated with left-sided heart failure.
3. In the pathophysiology of Type 1 Diabetes Mellitus, what is the primary cause of insulin
deficiency?
A. Insulin resistance in peripheral tissues
B. Autoimmune destruction of pancreatic beta cells
C. Excessive glucagon secretion
D. Downregulation of insulin receptors
Answer: B
Rationale: Type 1 Diabetes is characterized by an absolute deficiency of insulin due to the
immune-mediated destruction of insulin-producing beta cells in the islets of Langerhans.
This process is often triggered by environmental factors in genetically susceptible
individuals. Without insulin, the body cannot transport glucose into cells, leading to
hyperglycemia and ketoacidosis.
, 4. A 55-year-old male with a history of smoking presents with a chronic cough and barrel
chest. Which condition does this reflect?
A. Asthma
B. Emphysema
C. Pneumonia
D. Pulmonary embolism
Answer: B
Rationale: Emphysema is a form of COPD characterized by the destruction of alveolar
walls and permanent enlargement of air spaces. This leads to air trapping and
hyperinflation of the lungs, which manifests clinically as a barrel chest. Smoking is the
primary risk factor as it inhibits the protective action of alpha-1 antitrypsin.
5. What is the pathophysiological mechanism behind Multiple Sclerosis (MS)?
A. Degeneration of dopaminergic neurons in the substantia nigra
B. Demyelination of axons in the central nervous system
C. Accumulation of amyloid-beta plaques
D. Depletion of acetylcholine at the neuromuscular junction
Answer: B
Rationale: Multiple Sclerosis is an autoimmune inflammatory disease that targets the
myelin sheath of neurons in the brain and spinal cord. The loss of myelin disrupts the
Advanced Pathophysiology | Actual Q&A
with Rationale (NURS6501N Final Exam) |
Walden University
1. A patient presents with severe hypotension and decreased urine output. Which type of
Acute Kidney Injury (AKI) is most likely occurring?
A. Intrarenal AKI
B. Chronic Renal Failure
C. Postrenal AKI
D. Prerenal AKI
Answer: D
Rationale: Prerenal AKI is caused by decreased blood flow to the kidney, which often
occurs during episodes of severe hypotension or dehydration. This decrease in perfusion
leads to a drop in the glomerular filtration rate despite the kidney tissue being initially
healthy. Proper restoration of blood pressure is essential to prevent progress to intrinsic
renal damage.
2. Which clinical manifestation is most characteristic of right-sided heart failure?
A. Pulmonary edema
B. Peripheral edema and jugular venous distention
,C. Dyspnea on exertion
D. Crackles in the lung bases
Answer: B
Rationale: Right-sided heart failure occurs when the right ventricle fails to pump blood
effectively into the pulmonary circulation. This leads to a backup of blood in the systemic
venous system, causing symptoms like hepatomegaly and peripheral edema. In contrast,
pulmonary symptoms are more commonly associated with left-sided heart failure.
3. In the pathophysiology of Type 1 Diabetes Mellitus, what is the primary cause of insulin
deficiency?
A. Insulin resistance in peripheral tissues
B. Autoimmune destruction of pancreatic beta cells
C. Excessive glucagon secretion
D. Downregulation of insulin receptors
Answer: B
Rationale: Type 1 Diabetes is characterized by an absolute deficiency of insulin due to the
immune-mediated destruction of insulin-producing beta cells in the islets of Langerhans.
This process is often triggered by environmental factors in genetically susceptible
individuals. Without insulin, the body cannot transport glucose into cells, leading to
hyperglycemia and ketoacidosis.
, 4. A 55-year-old male with a history of smoking presents with a chronic cough and barrel
chest. Which condition does this reflect?
A. Asthma
B. Emphysema
C. Pneumonia
D. Pulmonary embolism
Answer: B
Rationale: Emphysema is a form of COPD characterized by the destruction of alveolar
walls and permanent enlargement of air spaces. This leads to air trapping and
hyperinflation of the lungs, which manifests clinically as a barrel chest. Smoking is the
primary risk factor as it inhibits the protective action of alpha-1 antitrypsin.
5. What is the pathophysiological mechanism behind Multiple Sclerosis (MS)?
A. Degeneration of dopaminergic neurons in the substantia nigra
B. Demyelination of axons in the central nervous system
C. Accumulation of amyloid-beta plaques
D. Depletion of acetylcholine at the neuromuscular junction
Answer: B
Rationale: Multiple Sclerosis is an autoimmune inflammatory disease that targets the
myelin sheath of neurons in the brain and spinal cord. The loss of myelin disrupts the
