NSG 5003 FINAL EXAM STUDY GUIDE (VERSION
1) – Advanced Pathophysiology and
Pharmacology for Graduate Nursing | 100% Pass
Guaranteed | Graded A+
Section 1: Cellular Biology and Pathophysiology Foundations (Questions 1–25)
1. A 67-year-old patient with chronic obstructive pulmonary disease (COPD) develops right-
sided heart failure secondary to chronic hypoxemia. This pathophysiological process is best
described as:
A. Cellular adaptation
B. Pathologic hyperplasia
C. Cor pulmonale
D. Compensatory hypertrophy
☑ Correct Answer: C
Explanation: Cor pulmonale is right-sided heart failure caused by pulmonary hypertension
secondary to chronic lung disease. The increased resistance in pulmonary vasculature leads to
right ventricular hypertrophy and failure. This is a classic complication of chronic hypoxemia in
COPD.
1
,2. A 52-year-old patient with a history of chronic alcoholism presents with jaundice and
ascites. Laboratory findings reveal elevated AST and ALT with an AST/ALT ratio > 2:1. This
pattern is most consistent with:
A. Viral hepatitis
B. Alcoholic liver disease
C. Biliary obstruction
D. Hepatocellular carcinoma
☑ Correct Answer: B
Explanation: An AST/ALT ratio > 2:1 is highly suggestive of alcoholic liver disease. In viral
hepatitis, the ratio is typically < 1. Biliary obstruction would present with elevated alkaline
phosphatase and bilirubin. Hepatocellular carcinoma may present with elevated alpha-
fetoprotein.
3. A patient with type 1 diabetes mellitus develops diabetic ketoacidosis (DKA). Which
pathophysiological mechanism is primarily responsible for the metabolic acidosis seen in this
condition?
A. Increased production of ketone bodies due to fatty acid oxidation
B. Lactic acid accumulation from anaerobic metabolism
C. Renal failure leading to acid retention
D. Respiratory depression causing CO₂ retention
☑ Correct Answer: A
2
,Explanation: In DKA, the lack of insulin leads to increased lipolysis and fatty acid oxidation in
the liver, producing ketone bodies (acetoacetic acid, beta-hydroxybutyric acid, and acetone).
These ketoacids overwhelm the buffering system, causing metabolic acidosis. Lactic acidosis is
more commonly associated with shock or metformin use.
4. A 45-year-old patient is diagnosed with primary hypertension. The nurse understands that
the most common underlying pathophysiological mechanism is:
A. Renal artery stenosis
B. Increased sympathetic nervous system activity
C. Increased peripheral vascular resistance
D. Excessive aldosterone secretion
☑ Correct Answer: C
Explanation: Primary (essential) hypertension accounts for 90–95% of cases and is
characterized by increased peripheral vascular resistance without a specific identifiable cause.
Renal artery stenosis and aldosterone excess are causes of secondary hypertension. Sympathetic
overactivity contributes but is not the primary mechanism.
5. A patient with heart failure is receiving digoxin. The nurse should monitor for signs of
digoxin toxicity, which is most likely to occur in the presence of:
A. Hyperkalemia
B. Hypokalemia
3
, C. Hypercalcemia
D. Hypermagnesemia
☑ Correct Answer: B
Explanation: Hypokalemia increases the risk of digoxin toxicity because digoxin competes
with potassium for binding sites on the Na⁺/K⁺-ATPase pump. Low potassium levels enhance
digoxin's effect and increase the likelihood of arrhythmias. Hyperkalemia actually reduces
digoxin's effect.
6. A patient is diagnosed with syndrome of inappropriate antidiuretic hormone (SIADH).
Which laboratory finding would the nurse expect?
A. Serum sodium 155 mEq/L
B. Serum sodium 118 mEq/L
C. Serum potassium 5.8 mEq/L
D. Serum calcium 11.5 mg/dL
☑ Correct Answer: B
Explanation: SIADH results in excessive water retention due to elevated ADH, causing
dilutional hyponatremia (serum sodium < 135 mEq/L). A sodium of 118 mEq/L is critically low
and requires immediate intervention. Hypernatremia would be seen in diabetes insipidus.
7. A 72-year-old patient with osteoarthritis is prescribed NSAIDs for pain management. Which
adverse effect is most concerning in this older adult population?
4
1) – Advanced Pathophysiology and
Pharmacology for Graduate Nursing | 100% Pass
Guaranteed | Graded A+
Section 1: Cellular Biology and Pathophysiology Foundations (Questions 1–25)
1. A 67-year-old patient with chronic obstructive pulmonary disease (COPD) develops right-
sided heart failure secondary to chronic hypoxemia. This pathophysiological process is best
described as:
A. Cellular adaptation
B. Pathologic hyperplasia
C. Cor pulmonale
D. Compensatory hypertrophy
☑ Correct Answer: C
Explanation: Cor pulmonale is right-sided heart failure caused by pulmonary hypertension
secondary to chronic lung disease. The increased resistance in pulmonary vasculature leads to
right ventricular hypertrophy and failure. This is a classic complication of chronic hypoxemia in
COPD.
1
,2. A 52-year-old patient with a history of chronic alcoholism presents with jaundice and
ascites. Laboratory findings reveal elevated AST and ALT with an AST/ALT ratio > 2:1. This
pattern is most consistent with:
A. Viral hepatitis
B. Alcoholic liver disease
C. Biliary obstruction
D. Hepatocellular carcinoma
☑ Correct Answer: B
Explanation: An AST/ALT ratio > 2:1 is highly suggestive of alcoholic liver disease. In viral
hepatitis, the ratio is typically < 1. Biliary obstruction would present with elevated alkaline
phosphatase and bilirubin. Hepatocellular carcinoma may present with elevated alpha-
fetoprotein.
3. A patient with type 1 diabetes mellitus develops diabetic ketoacidosis (DKA). Which
pathophysiological mechanism is primarily responsible for the metabolic acidosis seen in this
condition?
A. Increased production of ketone bodies due to fatty acid oxidation
B. Lactic acid accumulation from anaerobic metabolism
C. Renal failure leading to acid retention
D. Respiratory depression causing CO₂ retention
☑ Correct Answer: A
2
,Explanation: In DKA, the lack of insulin leads to increased lipolysis and fatty acid oxidation in
the liver, producing ketone bodies (acetoacetic acid, beta-hydroxybutyric acid, and acetone).
These ketoacids overwhelm the buffering system, causing metabolic acidosis. Lactic acidosis is
more commonly associated with shock or metformin use.
4. A 45-year-old patient is diagnosed with primary hypertension. The nurse understands that
the most common underlying pathophysiological mechanism is:
A. Renal artery stenosis
B. Increased sympathetic nervous system activity
C. Increased peripheral vascular resistance
D. Excessive aldosterone secretion
☑ Correct Answer: C
Explanation: Primary (essential) hypertension accounts for 90–95% of cases and is
characterized by increased peripheral vascular resistance without a specific identifiable cause.
Renal artery stenosis and aldosterone excess are causes of secondary hypertension. Sympathetic
overactivity contributes but is not the primary mechanism.
5. A patient with heart failure is receiving digoxin. The nurse should monitor for signs of
digoxin toxicity, which is most likely to occur in the presence of:
A. Hyperkalemia
B. Hypokalemia
3
, C. Hypercalcemia
D. Hypermagnesemia
☑ Correct Answer: B
Explanation: Hypokalemia increases the risk of digoxin toxicity because digoxin competes
with potassium for binding sites on the Na⁺/K⁺-ATPase pump. Low potassium levels enhance
digoxin's effect and increase the likelihood of arrhythmias. Hyperkalemia actually reduces
digoxin's effect.
6. A patient is diagnosed with syndrome of inappropriate antidiuretic hormone (SIADH).
Which laboratory finding would the nurse expect?
A. Serum sodium 155 mEq/L
B. Serum sodium 118 mEq/L
C. Serum potassium 5.8 mEq/L
D. Serum calcium 11.5 mg/dL
☑ Correct Answer: B
Explanation: SIADH results in excessive water retention due to elevated ADH, causing
dilutional hyponatremia (serum sodium < 135 mEq/L). A sodium of 118 mEq/L is critically low
and requires immediate intervention. Hypernatremia would be seen in diabetes insipidus.
7. A 72-year-old patient with osteoarthritis is prescribed NSAIDs for pain management. Which
adverse effect is most concerning in this older adult population?
4
