APEA 3P Comprehensive Practice Questions
Set 2 2026–2027 – Complete Exam-Style
Questions with Correct Answers & Detailed
Rationales | Verified & Reliable
1.
A 68-year-old patient with hypertension and chronic kidney
disease has an estimated GFR of 28 mL/min/1.73 m². The
patient is taking lisinopril and develops a serum potassium of
5.9 mEq/L. Which mechanism best explains the hyperkalemia?
A. Increased distal sodium delivery
B. Increased aldosterone secretion
C. Reduced aldosterone-mediated potassium excretion
D. Increased proximal tubular potassium secretion
Rationale: ACE inhibitors decrease conversion of angiotensin I
to angiotensin II, reducing aldosterone secretion. Lower
aldosterone activity decreases potassium secretion in the
distal nephron, making hyperkalemia more likely, particularly
in patients with chronic kidney disease. Increased distal
sodium delivery and aldosterone secretion would generally
promote potassium excretion rather than cause hyperkalemia.
,2.
A 24-year-old patient reports episodic palpitations,
tremulousness, heat intolerance, and unintentional weight loss.
Examination reveals a fine tremor and a diffusely enlarged
thyroid. Which laboratory pattern is most consistent with
primary hyperthyroidism?
A. High TSH and low free T4
B. High TSH and high free T4
C. Normal TSH and low free T4
D. Low TSH and high free T4
Rationale: In primary hyperthyroidism, excess thyroid
hormone suppresses pituitary TSH secretion through negative
feedback. Therefore, free T4 is elevated while TSH is typically
suppressed. A high TSH with high free T4 would suggest an
unusual central cause rather than primary thyroid disease.
3.
A patient with asthma uses an albuterol inhaler several times
daily despite appropriate inhaler technique. Which additional
medication is most appropriate for long-term control of
persistent asthma?
,A. Ipratropium alone
B. Oral prednisone indefinitely
C. An inhaled corticosteroid
D. Theophylline as first-line monotherapy
Rationale: Inhaled corticosteroids are foundational controller
therapy because they reduce airway inflammation and
decrease exacerbation risk. Frequent reliance on a short-
acting bronchodilator indicates inadequate control. Long-term
systemic corticosteroids carry substantial toxicity and are not
preferred when inhaled anti-inflammatory therapy can control
the disease.
4.
During examination of a patient with suspected left-sided heart
failure, which finding is most characteristic?
A. Unilateral calf swelling
B. Jugular venous distention only
C. Bibasilar inspiratory crackles
D. Bounding peripheral pulses
Rationale: Left-sided heart failure causes increased pulmonary
venous pressure, promoting interstitial and alveolar fluid
accumulation. Bibasilar crackles are therefore a classic
finding. Jugular venous distention and peripheral edema are
, more closely associated with systemic venous congestion,
although they may occur in advanced or biventricular failure.
5.
A 59-year-old patient presents with sudden severe substernal
chest pressure radiating to the jaw, diaphoresis, and nausea.
Which physical-assessment finding would most strongly
support an acute myocardial infarction rather than
uncomplicated gastroesophageal reflux?
A. Symptoms after a large meal
B. Sour taste in the mouth
C. Relief after an antacid
D. Associated diaphoresis and exertional pressure-like
discomfort
Rationale: Acute coronary syndrome commonly produces
pressure, squeezing, or heaviness with autonomic symptoms
such as diaphoresis, nausea, and dyspnea. Gastroesophageal
reflux is more likely to produce burning discomfort,
regurgitation, or a sour taste. Response to an antacid does not
reliably exclude cardiac ischemia.
6.
Set 2 2026–2027 – Complete Exam-Style
Questions with Correct Answers & Detailed
Rationales | Verified & Reliable
1.
A 68-year-old patient with hypertension and chronic kidney
disease has an estimated GFR of 28 mL/min/1.73 m². The
patient is taking lisinopril and develops a serum potassium of
5.9 mEq/L. Which mechanism best explains the hyperkalemia?
A. Increased distal sodium delivery
B. Increased aldosterone secretion
C. Reduced aldosterone-mediated potassium excretion
D. Increased proximal tubular potassium secretion
Rationale: ACE inhibitors decrease conversion of angiotensin I
to angiotensin II, reducing aldosterone secretion. Lower
aldosterone activity decreases potassium secretion in the
distal nephron, making hyperkalemia more likely, particularly
in patients with chronic kidney disease. Increased distal
sodium delivery and aldosterone secretion would generally
promote potassium excretion rather than cause hyperkalemia.
,2.
A 24-year-old patient reports episodic palpitations,
tremulousness, heat intolerance, and unintentional weight loss.
Examination reveals a fine tremor and a diffusely enlarged
thyroid. Which laboratory pattern is most consistent with
primary hyperthyroidism?
A. High TSH and low free T4
B. High TSH and high free T4
C. Normal TSH and low free T4
D. Low TSH and high free T4
Rationale: In primary hyperthyroidism, excess thyroid
hormone suppresses pituitary TSH secretion through negative
feedback. Therefore, free T4 is elevated while TSH is typically
suppressed. A high TSH with high free T4 would suggest an
unusual central cause rather than primary thyroid disease.
3.
A patient with asthma uses an albuterol inhaler several times
daily despite appropriate inhaler technique. Which additional
medication is most appropriate for long-term control of
persistent asthma?
,A. Ipratropium alone
B. Oral prednisone indefinitely
C. An inhaled corticosteroid
D. Theophylline as first-line monotherapy
Rationale: Inhaled corticosteroids are foundational controller
therapy because they reduce airway inflammation and
decrease exacerbation risk. Frequent reliance on a short-
acting bronchodilator indicates inadequate control. Long-term
systemic corticosteroids carry substantial toxicity and are not
preferred when inhaled anti-inflammatory therapy can control
the disease.
4.
During examination of a patient with suspected left-sided heart
failure, which finding is most characteristic?
A. Unilateral calf swelling
B. Jugular venous distention only
C. Bibasilar inspiratory crackles
D. Bounding peripheral pulses
Rationale: Left-sided heart failure causes increased pulmonary
venous pressure, promoting interstitial and alveolar fluid
accumulation. Bibasilar crackles are therefore a classic
finding. Jugular venous distention and peripheral edema are
, more closely associated with systemic venous congestion,
although they may occur in advanced or biventricular failure.
5.
A 59-year-old patient presents with sudden severe substernal
chest pressure radiating to the jaw, diaphoresis, and nausea.
Which physical-assessment finding would most strongly
support an acute myocardial infarction rather than
uncomplicated gastroesophageal reflux?
A. Symptoms after a large meal
B. Sour taste in the mouth
C. Relief after an antacid
D. Associated diaphoresis and exertional pressure-like
discomfort
Rationale: Acute coronary syndrome commonly produces
pressure, squeezing, or heaviness with autonomic symptoms
such as diaphoresis, nausea, and dyspnea. Gastroesophageal
reflux is more likely to produce burning discomfort,
regurgitation, or a sour taste. Response to an antacid does not
reliably exclude cardiac ischemia.
6.
