WGU D027 ADVANCED
PATHOPHARMACOLOGICAL
FOUNDATIONS OBJECTIVE
ASSESSMENT REVIEW QUESTIONS
AND ANSWERS
1. A patient with chronic kidney disease (CKD) presents with a potassium level of 6.8 mEq/L.
Which medication is the priority to stabilize the cardiac membrane?
A. Calcium gluconate
B. Sodium polystyrene sulfonate
C. Regular insulin with dextrose
D. Furosemide
Answer: A
Conceptual Explanation: Calcium gluconate does not lower potassium levels but is the
priority to stabilize the myocardial cell membrane and prevent life-threatening
arrhythmias in severe hyperkalemia.
2. Which pathophysiological mechanism is primary in the development of type 2 diabetes
mellitus?
A. Autoimmune destruction of beta cells
,B. Absolute insulin deficiency
C. Insulin resistance and relative insulin deficiency
D. Increased glucagon secretion from alpha cells
Answer: C
Conceptual Explanation: Type 2 diabetes is characterized by insulin resistance at the
cellular level and a progressive decline in beta-cell insulin secretion.
3. A patient is diagnosed with Syndrome of Inappropriate Antidiuretic Hormone (SIADH).
Which laboratory finding is most consistent with this diagnosis?
A. Serum sodium of 125 mEq/L
B. Serum osmolality of 310 mOsm/kg
C. Urine specific gravity of 1.002
D. High serum glucose
Answer: A
Conceptual Explanation: SIADH involves excessive ADH, leading to water retention and
dilutional hyponatremia. Serum sodium levels decrease significantly.
4. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the primary function of
Angiotensin II?
A. Vasodilation and sodium excretion
B. Inhibition of aldosterone release
, C. Vasoconstriction and stimulation of aldosterone release
D. Conversion of angiotensinogen to angiotensin I
Answer: C
Conceptual Explanation: Angiotensin II is a potent vasoconstrictor and triggers the
adrenal cortex to release aldosterone, which increases sodium and water reabsorption.
5. Which of the following is a classic sign of right-sided heart failure?
A. Pulmonary edema
B. Orthopnea
C. Crackles in lung bases
D. Jugular venous distention (JVD)
Answer: D
Conceptual Explanation: Right-sided heart failure causes systemic venous congestion,
leading to JVD, peripheral edema, and hepatomegaly.
6. A patient taking an ACE inhibitor develops a dry, persistent cough. What is the
pharmacological cause?
A. Increased levels of aldosterone
B. Inhibition of prostaglandin synthesis
C. Accumulation of bradykinin
PATHOPHARMACOLOGICAL
FOUNDATIONS OBJECTIVE
ASSESSMENT REVIEW QUESTIONS
AND ANSWERS
1. A patient with chronic kidney disease (CKD) presents with a potassium level of 6.8 mEq/L.
Which medication is the priority to stabilize the cardiac membrane?
A. Calcium gluconate
B. Sodium polystyrene sulfonate
C. Regular insulin with dextrose
D. Furosemide
Answer: A
Conceptual Explanation: Calcium gluconate does not lower potassium levels but is the
priority to stabilize the myocardial cell membrane and prevent life-threatening
arrhythmias in severe hyperkalemia.
2. Which pathophysiological mechanism is primary in the development of type 2 diabetes
mellitus?
A. Autoimmune destruction of beta cells
,B. Absolute insulin deficiency
C. Insulin resistance and relative insulin deficiency
D. Increased glucagon secretion from alpha cells
Answer: C
Conceptual Explanation: Type 2 diabetes is characterized by insulin resistance at the
cellular level and a progressive decline in beta-cell insulin secretion.
3. A patient is diagnosed with Syndrome of Inappropriate Antidiuretic Hormone (SIADH).
Which laboratory finding is most consistent with this diagnosis?
A. Serum sodium of 125 mEq/L
B. Serum osmolality of 310 mOsm/kg
C. Urine specific gravity of 1.002
D. High serum glucose
Answer: A
Conceptual Explanation: SIADH involves excessive ADH, leading to water retention and
dilutional hyponatremia. Serum sodium levels decrease significantly.
4. In the Renin-Angiotensin-Aldosterone System (RAAS), what is the primary function of
Angiotensin II?
A. Vasodilation and sodium excretion
B. Inhibition of aldosterone release
, C. Vasoconstriction and stimulation of aldosterone release
D. Conversion of angiotensinogen to angiotensin I
Answer: C
Conceptual Explanation: Angiotensin II is a potent vasoconstrictor and triggers the
adrenal cortex to release aldosterone, which increases sodium and water reabsorption.
5. Which of the following is a classic sign of right-sided heart failure?
A. Pulmonary edema
B. Orthopnea
C. Crackles in lung bases
D. Jugular venous distention (JVD)
Answer: D
Conceptual Explanation: Right-sided heart failure causes systemic venous congestion,
leading to JVD, peripheral edema, and hepatomegaly.
6. A patient taking an ACE inhibitor develops a dry, persistent cough. What is the
pharmacological cause?
A. Increased levels of aldosterone
B. Inhibition of prostaglandin synthesis
C. Accumulation of bradykinin
