WGU D444 ADULT HEALTH 1 OA EXAM – VERIFIED
QUESTIONS & RATIONALES ULTIMATE WGU D444
ADULT HEALTH 1 OA PREP: 150 QUESTIONS
COVERING ALL 12 CONTENT AREAS
PHARMACOKINETICS & PHARMACOLOGY
Question 1
What is the study of how drugs enter the body, reach their site of action, are metabolized,
and exit the body called?
A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacotherapeutics
D. Pharmacognosy
Answer: B – Pharmacokinetics
Rationale: Pharmacokinetics describes the movement of drugs through the body, including
absorption, distribution, metabolism, and excretion (ADME). Pharmacodynamics is the
study of what drugs do to the body.
Question 2
A patient with hypertension is prescribed lisinopril. What is the mechanism of action?
A. Beta-blocker
B. ACE Inhibitor
,C. Calcium Channel Blocker
D. Diuretic
Answer: B – ACE Inhibitor
Rationale: Lisinopril is an ACE inhibitor that blocks the conversion of angiotensin I to
angiotensin II, a potent vasoconstrictor, leading to vasodilation and decreased blood
pressure.
Question 3
Which medication classification reduces heart rate?
A. Calcium channel blockers
B. Beta-blockers
C. ACE inhibitors
D. Diuretics
Answer: B – Beta-blockers
Rationale: Beta-blockers reduce heart rate by blocking beta-adrenergic receptors in the
heart, decreasing myocardial oxygen demand. Calcium channel blockers cause vasodilation
but also reduce heart rate depending on the specific agent.
Question 4
Potassium-sparing diuretics such as spironolactone require monitoring for which electrolyte
imbalance?
,A. Hypokalemia
B. Hyperkalemia
C. Hyponatremia
D. Hypocalcemia
Answer: B – Hyperkalemia
Rationale: Potassium-sparing diuretics prevent potassium excretion, which can lead to
dangerously high potassium levels. Patients should avoid potassium supplements and salt
substitutes.
Question 5
Furosemide is classified as which type of diuretic and requires monitoring for what
electrolyte imbalance?
A. Potassium-sparing; hyperkalemia
B. Loop diuretic; hypokalemia
C. Thiazide diuretic; hyperkalemia
D. Osmotic diuretic; hyponatremia
Answer: B – Loop diuretic; hypokalemia
Rationale: Furosemide is a loop diuretic that causes potassium wasting. A potassium level
of 3.0 mEq/L indicates hypokalemia, which can lead to cardiac dysrhythmias (normal range
is 3.5-5.0).
HEART FAILURE & CARDIAC MANAGEMENT (Questions 6-25)
, Question 6
A 55-year-old patient with chronic heart failure is experiencing increasing shortness of
breath and peripheral edema. Which medication would most likely be prescribed to manage
these symptoms?
A. Digoxin
B. Metoprolol
C. Furosemide
D. Lisinopril
Answer: C – Furosemide
Rationale: Furosemide is a diuretic that helps reduce fluid overload, relieving symptoms like
shortness of breath and peripheral edema in patients with heart failure.
Question 7
A 65-year-old patient with heart failure is prescribed furosemide. Which lab value requires
immediate notification of the healthcare provider?
A. Sodium 138 mEq/L
B. Potassium 3.0 mEq/L
C. Calcium 9.2 mg/dL
D. Magnesium 2.0 mg/dL
Answer: B – Potassium 3.0 mEq/L
Rationale: Furosemide is a loop diuretic that causes potassium loss. A level of 3.0 mEq/L
indicates hypokalemia, which can lead to cardiac dysrhythmias.
QUESTIONS & RATIONALES ULTIMATE WGU D444
ADULT HEALTH 1 OA PREP: 150 QUESTIONS
COVERING ALL 12 CONTENT AREAS
PHARMACOKINETICS & PHARMACOLOGY
Question 1
What is the study of how drugs enter the body, reach their site of action, are metabolized,
and exit the body called?
A. Pharmacodynamics
B. Pharmacokinetics
C. Pharmacotherapeutics
D. Pharmacognosy
Answer: B – Pharmacokinetics
Rationale: Pharmacokinetics describes the movement of drugs through the body, including
absorption, distribution, metabolism, and excretion (ADME). Pharmacodynamics is the
study of what drugs do to the body.
Question 2
A patient with hypertension is prescribed lisinopril. What is the mechanism of action?
A. Beta-blocker
B. ACE Inhibitor
,C. Calcium Channel Blocker
D. Diuretic
Answer: B – ACE Inhibitor
Rationale: Lisinopril is an ACE inhibitor that blocks the conversion of angiotensin I to
angiotensin II, a potent vasoconstrictor, leading to vasodilation and decreased blood
pressure.
Question 3
Which medication classification reduces heart rate?
A. Calcium channel blockers
B. Beta-blockers
C. ACE inhibitors
D. Diuretics
Answer: B – Beta-blockers
Rationale: Beta-blockers reduce heart rate by blocking beta-adrenergic receptors in the
heart, decreasing myocardial oxygen demand. Calcium channel blockers cause vasodilation
but also reduce heart rate depending on the specific agent.
Question 4
Potassium-sparing diuretics such as spironolactone require monitoring for which electrolyte
imbalance?
,A. Hypokalemia
B. Hyperkalemia
C. Hyponatremia
D. Hypocalcemia
Answer: B – Hyperkalemia
Rationale: Potassium-sparing diuretics prevent potassium excretion, which can lead to
dangerously high potassium levels. Patients should avoid potassium supplements and salt
substitutes.
Question 5
Furosemide is classified as which type of diuretic and requires monitoring for what
electrolyte imbalance?
A. Potassium-sparing; hyperkalemia
B. Loop diuretic; hypokalemia
C. Thiazide diuretic; hyperkalemia
D. Osmotic diuretic; hyponatremia
Answer: B – Loop diuretic; hypokalemia
Rationale: Furosemide is a loop diuretic that causes potassium wasting. A potassium level
of 3.0 mEq/L indicates hypokalemia, which can lead to cardiac dysrhythmias (normal range
is 3.5-5.0).
HEART FAILURE & CARDIAC MANAGEMENT (Questions 6-25)
, Question 6
A 55-year-old patient with chronic heart failure is experiencing increasing shortness of
breath and peripheral edema. Which medication would most likely be prescribed to manage
these symptoms?
A. Digoxin
B. Metoprolol
C. Furosemide
D. Lisinopril
Answer: C – Furosemide
Rationale: Furosemide is a diuretic that helps reduce fluid overload, relieving symptoms like
shortness of breath and peripheral edema in patients with heart failure.
Question 7
A 65-year-old patient with heart failure is prescribed furosemide. Which lab value requires
immediate notification of the healthcare provider?
A. Sodium 138 mEq/L
B. Potassium 3.0 mEq/L
C. Calcium 9.2 mg/dL
D. Magnesium 2.0 mg/dL
Answer: B – Potassium 3.0 mEq/L
Rationale: Furosemide is a loop diuretic that causes potassium loss. A level of 3.0 mEq/L
indicates hypokalemia, which can lead to cardiac dysrhythmias.
