AANP Certification Exam 2026 –Recommeded Practice
Questions with Verified Answers & Rationales | MCQ Study
Guide PDF
covering FNP/PMHNP core domains like:
Health promotion & disease prevention
Diagnosis & management of acute and chronic conditions
Pharmacology & therapeutics
Clinical decision-making and patient care
Ethical, legal, and professional considerations
1. A 45-year-old patient presents with fatigue, weight gain, and cold intolerance.
Lab results show elevated TSH and low free T4. The most likely diagnosis is:
A) Hyperthyroidism
B) Hypothyroidism
C) Subclinical hyperthyroidism
D) Euthyroid sick syndrome
Answer: B) Hypothyroidism
Explanation 👀: Elevated TSH with low free T4 indicates primary hypothyroidism,
commonly due to Hashimoto’s thyroiditis.
2. First-line treatment for community-acquired pneumonia in an otherwise
healthy adult is:
A) Azithromycin
B) Ciprofloxacin
C) Doxycycline
D) Amoxicillin-clavulanate
,Answer: A) Azithromycin
Explanation 👀: Macrolides like azithromycin are first-line for outpatient CAP in
healthy adults without comorbidities.
3. Which lipid-lowering agent is most effective at reducing LDL cholesterol?
A) Statins
B) Fibrates
C) Niacin
D) Ezetimibe
Answer: A) Statins
Explanation 👀: Statins inhibit HMG-CoA reductase, significantly lowering LDL and
reducing cardiovascular risk.
4. A patient presents with acute onset right eye pain, halos, nausea, and a mid-
dilated pupil. The most likely diagnosis is:
A) Open-angle glaucoma
B) Acute angle-closure glaucoma
C) Cataract
D) Conjunctivitis
Answer: B) Acute angle-closure glaucoma
Explanation 👀: Acute angle-closure glaucoma presents with severe eye pain,
nausea, vomiting, and mid-dilated nonreactive pupil; urgent ophthalmology
referral is required.
5. Which medication is contraindicated in pregnancy?
A) Lisinopril
B) Acetaminophen
C) Insulin
D) Cephalexin
,Answer: A) Lisinopril
Explanation 👀: ACE inhibitors are teratogenic, especially in the second and third
trimesters, causing fetal renal dysplasia.
6. First-line therapy for type 2 diabetes mellitus is:
A) Insulin
B) Metformin
C) Sulfonylureas
D) GLP-1 receptor agonists
Answer: B) Metformin
Explanation 👀: Metformin is preferred first-line due to efficacy, safety profile,
weight neutrality, and cardiovascular benefits.
7. A 60-year-old patient presents with sudden-onset chest pain radiating to the
left arm. ECG shows ST-segment elevation in leads II, III, and aVF. The most likely
diagnosis is:
A) Anterior MI
B) Inferior MI
C) Lateral MI
D) Pericarditis
Answer: B) Inferior MI
Explanation 👀: ST elevation in II, III, aVF indicates inferior wall myocardial
infarction, usually due to right coronary artery occlusion.
8. A patient presents with watery diarrhea after antibiotic use. The most likely
cause is:
A) Clostridioides difficile infection
B) Norovirus infection
C) Salmonella infection
D) Lactose intolerance
, Answer: A) Clostridioides difficile infection
Explanation 👀: Antibiotic-associated diarrhea with watery stools is commonly
caused by C. difficile; confirm with stool toxin assay.
9. Which vaccine is recommended annually for all adults?
A) Tdap
B) Influenza
C) MMR
D) Varicella
Answer: B) Influenza
Explanation 👀: Annual influenza vaccination is recommended for all adults,
especially high-risk populations.
10. A 25-year-old female presents with dysuria, frequency, and urgency. The first-
line treatment for uncomplicated UTI is:
A) Ciprofloxacin
B) Nitrofurantoin
C) Amoxicillin
D) Doxycycline
Answer: B) Nitrofurantoin
Explanation 👀: Nitrofurantoin is first-line for uncomplicated cystitis in non-
pregnant women; fluoroquinolones are reserved for complicated cases.
11. Which medication is first-line for generalized anxiety disorder?
A) Benzodiazepines long-term
B) SSRIs
C) Typical antipsychotics
D) Mood stabilizers
Questions with Verified Answers & Rationales | MCQ Study
Guide PDF
covering FNP/PMHNP core domains like:
Health promotion & disease prevention
Diagnosis & management of acute and chronic conditions
Pharmacology & therapeutics
Clinical decision-making and patient care
Ethical, legal, and professional considerations
1. A 45-year-old patient presents with fatigue, weight gain, and cold intolerance.
Lab results show elevated TSH and low free T4. The most likely diagnosis is:
A) Hyperthyroidism
B) Hypothyroidism
C) Subclinical hyperthyroidism
D) Euthyroid sick syndrome
Answer: B) Hypothyroidism
Explanation 👀: Elevated TSH with low free T4 indicates primary hypothyroidism,
commonly due to Hashimoto’s thyroiditis.
2. First-line treatment for community-acquired pneumonia in an otherwise
healthy adult is:
A) Azithromycin
B) Ciprofloxacin
C) Doxycycline
D) Amoxicillin-clavulanate
,Answer: A) Azithromycin
Explanation 👀: Macrolides like azithromycin are first-line for outpatient CAP in
healthy adults without comorbidities.
3. Which lipid-lowering agent is most effective at reducing LDL cholesterol?
A) Statins
B) Fibrates
C) Niacin
D) Ezetimibe
Answer: A) Statins
Explanation 👀: Statins inhibit HMG-CoA reductase, significantly lowering LDL and
reducing cardiovascular risk.
4. A patient presents with acute onset right eye pain, halos, nausea, and a mid-
dilated pupil. The most likely diagnosis is:
A) Open-angle glaucoma
B) Acute angle-closure glaucoma
C) Cataract
D) Conjunctivitis
Answer: B) Acute angle-closure glaucoma
Explanation 👀: Acute angle-closure glaucoma presents with severe eye pain,
nausea, vomiting, and mid-dilated nonreactive pupil; urgent ophthalmology
referral is required.
5. Which medication is contraindicated in pregnancy?
A) Lisinopril
B) Acetaminophen
C) Insulin
D) Cephalexin
,Answer: A) Lisinopril
Explanation 👀: ACE inhibitors are teratogenic, especially in the second and third
trimesters, causing fetal renal dysplasia.
6. First-line therapy for type 2 diabetes mellitus is:
A) Insulin
B) Metformin
C) Sulfonylureas
D) GLP-1 receptor agonists
Answer: B) Metformin
Explanation 👀: Metformin is preferred first-line due to efficacy, safety profile,
weight neutrality, and cardiovascular benefits.
7. A 60-year-old patient presents with sudden-onset chest pain radiating to the
left arm. ECG shows ST-segment elevation in leads II, III, and aVF. The most likely
diagnosis is:
A) Anterior MI
B) Inferior MI
C) Lateral MI
D) Pericarditis
Answer: B) Inferior MI
Explanation 👀: ST elevation in II, III, aVF indicates inferior wall myocardial
infarction, usually due to right coronary artery occlusion.
8. A patient presents with watery diarrhea after antibiotic use. The most likely
cause is:
A) Clostridioides difficile infection
B) Norovirus infection
C) Salmonella infection
D) Lactose intolerance
, Answer: A) Clostridioides difficile infection
Explanation 👀: Antibiotic-associated diarrhea with watery stools is commonly
caused by C. difficile; confirm with stool toxin assay.
9. Which vaccine is recommended annually for all adults?
A) Tdap
B) Influenza
C) MMR
D) Varicella
Answer: B) Influenza
Explanation 👀: Annual influenza vaccination is recommended for all adults,
especially high-risk populations.
10. A 25-year-old female presents with dysuria, frequency, and urgency. The first-
line treatment for uncomplicated UTI is:
A) Ciprofloxacin
B) Nitrofurantoin
C) Amoxicillin
D) Doxycycline
Answer: B) Nitrofurantoin
Explanation 👀: Nitrofurantoin is first-line for uncomplicated cystitis in non-
pregnant women; fluoroquinolones are reserved for complicated cases.
11. Which medication is first-line for generalized anxiety disorder?
A) Benzodiazepines long-term
B) SSRIs
C) Typical antipsychotics
D) Mood stabilizers
