AANP FNP CERTIFICATION EXAM
BANK 2026 Comprehensive Questions
with Detailed Answers and Evidence-
Based Rationales
Q1. A 45-year-old patient presents with persistent fatigue, weight gain, and
cold intolerance. Which laboratory test is most appropriate to confirm the
suspected diagnosis?
A. Serum cortisol
B. TSH and free T4
C. HbA1c
D. Serum calcium
Correct Answer: B. TSH and free T4
Rationale: The classic triad of fatigue, weight gain, and cold intolerance
suggests hypothyroidism. TSH and free T4 are the primary diagnostic tests
for thyroid function assessment; elevated TSH with low free T4 confirms
primary hypothyroidism. Cortisol (A) would be indicated for adrenal
insufficiency, HbA1c (C) for diabetes, and serum calcium (D) for parathyroid
disorders .
Q2. A patient with a history of heavy tobacco use undergoes spirometry.
FVC is 75% predicted, FEV1 is 55% predicted, and FEV1/FVC ratio is 0.55.
After bronchodilator administration, FEV1 improves by 10% and 200 mL.
Which pattern of lung disease is most consistent?
,A. Reversible obstructive airway disease with normal diffusing capacity
B. Irreversible obstructive airway disease with hyperinflation
C. Restrictive lung disease with reduced total lung capacity
D. Mixed obstructive-restrictive pattern with low diffusing capacity
Correct Answer: B. Irreversible obstructive airway disease with
hyperinflation
Rationale: The FEV1/FVC ratio <0.70 indicates obstruction. FEV1 is
moderately reduced, and the bronchodilator response is minimal (10% and
200 mL—not significant by ATS criteria of 12% and 200 mL). This suggests
fixed obstruction, typical of COPD. Reversible obstruction (A) would show
greater bronchodilator response. Restrictive (C) would have normal or high
FEV1/FVC. Mixed pattern (D) would have reduced FVC and low FEV1/FVC,
but FVC is not severely reduced .
Q3. A patient with type 2 diabetes on metformin 1000 mg BID and insulin
glargine 20 units at bedtime has a fasting glucose of 180 mg/dL and a 2-
hour postprandial glucose of 250 mg/dL. Which adjustment is most
appropriate?
A. Increase metformin to 1000 mg three times daily
B. Increase insulin glargine to 24 units at bedtime
C. Add rapid-acting insulin before meals
D. Add a thiazolidinedione
Correct Answer: C. Add rapid-acting insulin before meals
Rationale: Both fasting and postprandial glucose are elevated. While fasting
hyperglycemia may be addressed by increasing basal insulin, the
postprandial spike is significant. Adding prandial (rapid-acting) insulin
directly targets post-meal glucose. Metformin dose is at maximal (1000 mg
BID is typical max). Thiazolidinediones take weeks to act and are not first-
,line for postprandial control. Increasing glargine may increase
hypoglycemia risk without effectively controlling postprandial spikes .
Q4. A 55-year-old African American patient with newly diagnosed
hypertension has a BP of 152/94 mmHg. Which medication is first-line
treatment?
A. ACE inhibitor
B. Beta blocker
C. Thiazide diuretic
D. Alpha blocker
Correct Answer: C. Thiazide diuretic
Rationale: Thiazide diuretics and calcium channel blockers are first-line for
African American patients due to better response rates. ACE inhibitors (A)
and ARBs are less effective as monotherapy in this population due to lower
renin activity. Beta blockers (B) are not first-line for uncomplicated
hypertension. Alpha blockers (D) are not preferred initial therapy .
Q5. A patient with suspected pulmonary embolism who is
hemodynamically stable should first undergo which diagnostic test?
A. Chest X-ray
B. ECG
C. CT pulmonary angiography
D. D-dimer only
Correct Answer: C. CT pulmonary angiography
Rationale: CT pulmonary angiography is the gold standard imaging test for
diagnosing PE in stable patients. While D-dimer (D) is useful as a screening
test, CT angiography provides definitive diagnosis. Chest X-ray (A) and ECG
(B) may show supportive findings but are not diagnostic .
, Q6. Which symptom is most characteristic of bacterial meningitis?
A. Gradual headache
B. Rash alone
C. Nuchal rigidity with fever
D. Bradycardia
Correct Answer: C. Nuchal rigidity with fever
Rationale: Fever, neck stiffness (nuchal rigidity), and altered mental status
are classic signs of meningitis. The presentation is typically acute, not
gradual (A). While a rash may occur in some types (e.g., meningococcal), it
is not the sole characteristic symptom (B). Bradycardia (D) is not a typical
finding .
Q7. First-line therapy for acute anaphylaxis is:
A. Diphenhydramine
B. Albuterol
C. Corticosteroids
D. Intramuscular epinephrine
Correct Answer: D. Intramuscular epinephrine
Rationale: Epinephrine is the only first-line, life-saving treatment for
anaphylaxis. It acts rapidly to reverse bronchospasm and hypotension.
Antihistamines (A), bronchodilators (B), and corticosteroids (C) are
adjunctive treatments but not first-line .
Q8. Which lab finding is expected in diabetic ketoacidosis (DKA)?
A. Metabolic alkalosis
B. Normal anion gap
BANK 2026 Comprehensive Questions
with Detailed Answers and Evidence-
Based Rationales
Q1. A 45-year-old patient presents with persistent fatigue, weight gain, and
cold intolerance. Which laboratory test is most appropriate to confirm the
suspected diagnosis?
A. Serum cortisol
B. TSH and free T4
C. HbA1c
D. Serum calcium
Correct Answer: B. TSH and free T4
Rationale: The classic triad of fatigue, weight gain, and cold intolerance
suggests hypothyroidism. TSH and free T4 are the primary diagnostic tests
for thyroid function assessment; elevated TSH with low free T4 confirms
primary hypothyroidism. Cortisol (A) would be indicated for adrenal
insufficiency, HbA1c (C) for diabetes, and serum calcium (D) for parathyroid
disorders .
Q2. A patient with a history of heavy tobacco use undergoes spirometry.
FVC is 75% predicted, FEV1 is 55% predicted, and FEV1/FVC ratio is 0.55.
After bronchodilator administration, FEV1 improves by 10% and 200 mL.
Which pattern of lung disease is most consistent?
,A. Reversible obstructive airway disease with normal diffusing capacity
B. Irreversible obstructive airway disease with hyperinflation
C. Restrictive lung disease with reduced total lung capacity
D. Mixed obstructive-restrictive pattern with low diffusing capacity
Correct Answer: B. Irreversible obstructive airway disease with
hyperinflation
Rationale: The FEV1/FVC ratio <0.70 indicates obstruction. FEV1 is
moderately reduced, and the bronchodilator response is minimal (10% and
200 mL—not significant by ATS criteria of 12% and 200 mL). This suggests
fixed obstruction, typical of COPD. Reversible obstruction (A) would show
greater bronchodilator response. Restrictive (C) would have normal or high
FEV1/FVC. Mixed pattern (D) would have reduced FVC and low FEV1/FVC,
but FVC is not severely reduced .
Q3. A patient with type 2 diabetes on metformin 1000 mg BID and insulin
glargine 20 units at bedtime has a fasting glucose of 180 mg/dL and a 2-
hour postprandial glucose of 250 mg/dL. Which adjustment is most
appropriate?
A. Increase metformin to 1000 mg three times daily
B. Increase insulin glargine to 24 units at bedtime
C. Add rapid-acting insulin before meals
D. Add a thiazolidinedione
Correct Answer: C. Add rapid-acting insulin before meals
Rationale: Both fasting and postprandial glucose are elevated. While fasting
hyperglycemia may be addressed by increasing basal insulin, the
postprandial spike is significant. Adding prandial (rapid-acting) insulin
directly targets post-meal glucose. Metformin dose is at maximal (1000 mg
BID is typical max). Thiazolidinediones take weeks to act and are not first-
,line for postprandial control. Increasing glargine may increase
hypoglycemia risk without effectively controlling postprandial spikes .
Q4. A 55-year-old African American patient with newly diagnosed
hypertension has a BP of 152/94 mmHg. Which medication is first-line
treatment?
A. ACE inhibitor
B. Beta blocker
C. Thiazide diuretic
D. Alpha blocker
Correct Answer: C. Thiazide diuretic
Rationale: Thiazide diuretics and calcium channel blockers are first-line for
African American patients due to better response rates. ACE inhibitors (A)
and ARBs are less effective as monotherapy in this population due to lower
renin activity. Beta blockers (B) are not first-line for uncomplicated
hypertension. Alpha blockers (D) are not preferred initial therapy .
Q5. A patient with suspected pulmonary embolism who is
hemodynamically stable should first undergo which diagnostic test?
A. Chest X-ray
B. ECG
C. CT pulmonary angiography
D. D-dimer only
Correct Answer: C. CT pulmonary angiography
Rationale: CT pulmonary angiography is the gold standard imaging test for
diagnosing PE in stable patients. While D-dimer (D) is useful as a screening
test, CT angiography provides definitive diagnosis. Chest X-ray (A) and ECG
(B) may show supportive findings but are not diagnostic .
, Q6. Which symptom is most characteristic of bacterial meningitis?
A. Gradual headache
B. Rash alone
C. Nuchal rigidity with fever
D. Bradycardia
Correct Answer: C. Nuchal rigidity with fever
Rationale: Fever, neck stiffness (nuchal rigidity), and altered mental status
are classic signs of meningitis. The presentation is typically acute, not
gradual (A). While a rash may occur in some types (e.g., meningococcal), it
is not the sole characteristic symptom (B). Bradycardia (D) is not a typical
finding .
Q7. First-line therapy for acute anaphylaxis is:
A. Diphenhydramine
B. Albuterol
C. Corticosteroids
D. Intramuscular epinephrine
Correct Answer: D. Intramuscular epinephrine
Rationale: Epinephrine is the only first-line, life-saving treatment for
anaphylaxis. It acts rapidly to reverse bronchospasm and hypotension.
Antihistamines (A), bronchodilators (B), and corticosteroids (C) are
adjunctive treatments but not first-line .
Q8. Which lab finding is expected in diabetic ketoacidosis (DKA)?
A. Metabolic alkalosis
B. Normal anion gap
