APEA Predictor Exam 2026 | Complete Practice Test with Answers &
Rationales | FNP Exam Prep
Comprehensive practice resource covering key FNP topics with clear explanations for efficient
exam review.
Last Updated: February 2026
SECTION I: ASSESSMENT & DIAGNOSIS (38 Questions)
Question 1:
A 58-year-old male presents with crushing substernal chest pain radiating to his left arm,
diaphoresis, and nausea for 45 minutes. Vital signs: BP 88/60 mmHg, HR 110 bpm, RR 24, O2
sat 91% on room air. EKG shows ST elevation in leads V1-V4. Which finding is most suggestive
of cardiogenic shock?
A. Blood pressure 88/60 mmHg with cool, clammy extremities
B. Heart rate 110 bpm with regular rhythm
C. Respiratory rate 24 with clear lung fields
D. Oxygen saturation 91% on room air
Answer: A
Rationale: Cardiogenic shock is defined as tissue hypoperfusion due to cardiac pump failure,
typically with systolic BP <90 mmHg or MAP <65 mmHg accompanied by clinical signs of
hypoperfusion (cool extremities, altered mental status, decreased urine output). While all
options represent abnormalities, option A specifically demonstrates both the hemodynamic
criteria (hypotension) and peripheral hypoperfusion (cool, clammy skin) that define cardiogenic
shock complicating an anterior STEMI. The other findings are secondary compensatory
mechanisms (tachycardia, tachypnea) or related to pulmonary edema, but do not specifically
indicate shock state. Immediate reperfusion therapy and hemodynamic support are indicated.
Question 2:
A 32-year-old female reports progressive dyspnea on exertion, orthopnea, and paroxysmal
nocturnal dyspnea over 3 months. Physical exam reveals a loud S1, opening snap, and diastolic
rumbling murmur at the apex. Which valvular disorder is most consistent with these findings?
A. Aortic stenosis
,B. Mitral regurgitation
C. Mitral stenosis
D. Tricuspid regurgitation
Answer: C
Rationale: The classic triad of symptoms (dyspnea on exertion, orthopnea, PND) combined with
the auscultatory findings of loud S1, opening snap, and diastolic rumbling murmur at the apex is
pathognomonic for mitral stenosis. This is most commonly rheumatic in origin. The opening
snap represents the abrupt halting of the stenotic valve leaflet opening, and the diastolic rumble
reflects turbulent flow across the stenotic valve. Aortic stenosis produces a systolic
crescendo-decrescendo murmur; mitral regurgitation causes a holosystolic blowing murmur;
tricuspid regurgitation produces a holosystolic murmur at the left sternal border that increases
with inspiration (Carvallo's sign).
Question 3:
A 67-year-old male with COPD presents with increased dyspnea, purulent sputum, and fever.
Chest X-ray shows no infiltrate. Arterial blood gas on room air: pH 7.32, PaCO2 68 mmHg,
PaHCO3 35 mEq/L, PaO2 52 mmHg. Which acid-base disorder is present?
A. Acute respiratory acidosis with metabolic compensation
B. Chronic respiratory acidosis with metabolic compensation
C. Metabolic alkalosis with respiratory compensation
D. Mixed respiratory and metabolic acidosis
Answer: B
Rationale: The ABG demonstrates respiratory acidosis (elevated PaCO2, decreased pH) with
metabolic compensation (elevated bicarbonate). In acute respiratory acidosis, bicarbonate
increases by 1 mEq/L for every 10 mmHg rise in PaCO2; in chronic respiratory acidosis
(expected in COPD), bicarbonate increases by 3.5-4 mEq/L per 10 mmHg PaCO2 rise. Here,
PaCO2 is elevated by approximately 28 mmHg from normal (40 mmHg), and bicarbonate has
risen by 11 mEq/L from normal (24 mEq/L), consistent with chronic compensation. The pH is
only mildly reduced (7.32), indicating adequate compensation. This pattern is typical of
acute-on-chronic respiratory failure in COPD exacerbation.
Question 4:
A 45-year-old female with type 2 diabetes presents with numbness and burning pain in her feet,
worse at night. Monofilament testing reveals loss of protective sensation bilaterally. Which
finding on physical exam would most strongly suggest diabetic autonomic neuropathy?
,A. Absent ankle reflexes
B. Postural hypotension with >20 mmHg drop in systolic BP
C. Decreased vibration sense at the ankles
D. Allodynia to light touch
Answer: B
Rationale: Postural (orthostatic) hypotension with a drop >20 mmHg systolic or >10 mmHg
diastolic upon standing indicates cardiovascular autonomic neuropathy, a serious complication
of diabetic autonomic dysfunction. While absent ankle reflexes (A), decreased vibration sense
(C), and allodynia (D) are all findings of diabetic peripheral neuropathy (specifically sensorimotor
polyneuropathy), only orthostatic hypotension reflects autonomic nervous system dysfunction
affecting the cardiovascular system. Other signs of autonomic neuropathy include
gastroparesis, neurogenic bladder, erectile dysfunction, and sudomotor abnormalities.
Question 5:
A 28-year-old male presents with acute onset of "the worst headache of my life" followed by
brief loss of consciousness. CT head without contrast shows hyperdensity in the basal cisterns.
Lumbar puncture reveals xanthochromic CSF with elevated red blood cells. Which diagnosis is
most likely?
A. Migraine with aura
B. Tension-type headache
C. Subarachnoid hemorrhage
D. Cluster headache
Answer: C
Rationale: The thunderclap headache (sudden, severe, "worst headache of life"), brief LOC, CT
showing hyperdensity in basal cisterns (representing blood), and xanthochromic CSF
(yellow-tinged from bilirubin breakdown of RBCs) constitute the classic presentation of
aneurysmal subarachnoid hemorrhage (SAH). Non-contrast CT is 100% sensitive for SAH if
performed within 6 hours of symptom onset; sensitivity decreases after 12 hours.
Xanthochromia develops 12 hours after bleed and persists for approximately 2 weeks. Migraine,
tension-type, and cluster headaches do not produce these objective findings and are not
associated with sudden LOC or meningeal signs.
Question 6:
, A 52-year-old female presents with fatigue, weight gain, constipation, and cold intolerance.
Physical exam reveals dry skin, periorbital edema, and delayed deep tendon reflexes. TSH is
12.5 mIU/L (normal 0.4-4.0). Which additional finding would best confirm Hashimoto's
thyroiditis as the etiology?
A. Elevated free T4 level
B. Positive anti-thyroid peroxidase (anti-TPO) antibodies
C. Enlarged, tender thyroid gland
D. Elevated T3 uptake
Answer: B
Rationale: Positive anti-thyroid peroxidase (anti-TPO) antibodies are present in 90-95% of
patients with Hashimoto's thyroiditis and represent the most specific serologic marker for
autoimmune hypothyroidism. The clinical presentation with goiter (often firm, non-tender),
hypothyroid symptoms, and elevated TSH is classic. Elevated free T4 (A) would suggest
hyperthyroidism, not hypothyroidism. Tender thyroid (C) suggests subacute (de Quervain's)
thyroiditis. Elevated T3 uptake (D) is seen in hyperthyroidism or binding protein abnormalities.
Anti-TPO antibodies distinguish Hashimoto's from other causes of hypothyroidism (iatrogenic,
iodine deficiency, postpartum).
Question 7:
A 19-year-old college student presents with sore throat, fever, and fatigue. Physical exam
reveals tender anterior cervical lymphadenopathy, tonsillar exudates, and palatal petechiae.
Monospot test is negative. Which finding would most strongly suggest infectious
mononucleosis despite the negative heterophile antibody test?
A. Elevated absolute neutrophil count
B. Atypical lymphocytes >10% on peripheral smear
C. Elevated erythrocyte sedimentation rate (ESR)
D. Thrombocytosis
Answer: B
Rationale: Atypical lymphocytes (reactive T-cells) >10% on peripheral smear in the appropriate
clinical context is highly suggestive of infectious mononucleosis (EBV infection), even with a
negative Monospot test. The Monospot test has 70-90% sensitivity in the first week of illness,
rising to nearly 100% by week 3-4; false negatives are common early in disease. Atypical
lymphocytosis is a hallmark of EBV infection and distinguishes it from bacterial pharyngitis
Rationales | FNP Exam Prep
Comprehensive practice resource covering key FNP topics with clear explanations for efficient
exam review.
Last Updated: February 2026
SECTION I: ASSESSMENT & DIAGNOSIS (38 Questions)
Question 1:
A 58-year-old male presents with crushing substernal chest pain radiating to his left arm,
diaphoresis, and nausea for 45 minutes. Vital signs: BP 88/60 mmHg, HR 110 bpm, RR 24, O2
sat 91% on room air. EKG shows ST elevation in leads V1-V4. Which finding is most suggestive
of cardiogenic shock?
A. Blood pressure 88/60 mmHg with cool, clammy extremities
B. Heart rate 110 bpm with regular rhythm
C. Respiratory rate 24 with clear lung fields
D. Oxygen saturation 91% on room air
Answer: A
Rationale: Cardiogenic shock is defined as tissue hypoperfusion due to cardiac pump failure,
typically with systolic BP <90 mmHg or MAP <65 mmHg accompanied by clinical signs of
hypoperfusion (cool extremities, altered mental status, decreased urine output). While all
options represent abnormalities, option A specifically demonstrates both the hemodynamic
criteria (hypotension) and peripheral hypoperfusion (cool, clammy skin) that define cardiogenic
shock complicating an anterior STEMI. The other findings are secondary compensatory
mechanisms (tachycardia, tachypnea) or related to pulmonary edema, but do not specifically
indicate shock state. Immediate reperfusion therapy and hemodynamic support are indicated.
Question 2:
A 32-year-old female reports progressive dyspnea on exertion, orthopnea, and paroxysmal
nocturnal dyspnea over 3 months. Physical exam reveals a loud S1, opening snap, and diastolic
rumbling murmur at the apex. Which valvular disorder is most consistent with these findings?
A. Aortic stenosis
,B. Mitral regurgitation
C. Mitral stenosis
D. Tricuspid regurgitation
Answer: C
Rationale: The classic triad of symptoms (dyspnea on exertion, orthopnea, PND) combined with
the auscultatory findings of loud S1, opening snap, and diastolic rumbling murmur at the apex is
pathognomonic for mitral stenosis. This is most commonly rheumatic in origin. The opening
snap represents the abrupt halting of the stenotic valve leaflet opening, and the diastolic rumble
reflects turbulent flow across the stenotic valve. Aortic stenosis produces a systolic
crescendo-decrescendo murmur; mitral regurgitation causes a holosystolic blowing murmur;
tricuspid regurgitation produces a holosystolic murmur at the left sternal border that increases
with inspiration (Carvallo's sign).
Question 3:
A 67-year-old male with COPD presents with increased dyspnea, purulent sputum, and fever.
Chest X-ray shows no infiltrate. Arterial blood gas on room air: pH 7.32, PaCO2 68 mmHg,
PaHCO3 35 mEq/L, PaO2 52 mmHg. Which acid-base disorder is present?
A. Acute respiratory acidosis with metabolic compensation
B. Chronic respiratory acidosis with metabolic compensation
C. Metabolic alkalosis with respiratory compensation
D. Mixed respiratory and metabolic acidosis
Answer: B
Rationale: The ABG demonstrates respiratory acidosis (elevated PaCO2, decreased pH) with
metabolic compensation (elevated bicarbonate). In acute respiratory acidosis, bicarbonate
increases by 1 mEq/L for every 10 mmHg rise in PaCO2; in chronic respiratory acidosis
(expected in COPD), bicarbonate increases by 3.5-4 mEq/L per 10 mmHg PaCO2 rise. Here,
PaCO2 is elevated by approximately 28 mmHg from normal (40 mmHg), and bicarbonate has
risen by 11 mEq/L from normal (24 mEq/L), consistent with chronic compensation. The pH is
only mildly reduced (7.32), indicating adequate compensation. This pattern is typical of
acute-on-chronic respiratory failure in COPD exacerbation.
Question 4:
A 45-year-old female with type 2 diabetes presents with numbness and burning pain in her feet,
worse at night. Monofilament testing reveals loss of protective sensation bilaterally. Which
finding on physical exam would most strongly suggest diabetic autonomic neuropathy?
,A. Absent ankle reflexes
B. Postural hypotension with >20 mmHg drop in systolic BP
C. Decreased vibration sense at the ankles
D. Allodynia to light touch
Answer: B
Rationale: Postural (orthostatic) hypotension with a drop >20 mmHg systolic or >10 mmHg
diastolic upon standing indicates cardiovascular autonomic neuropathy, a serious complication
of diabetic autonomic dysfunction. While absent ankle reflexes (A), decreased vibration sense
(C), and allodynia (D) are all findings of diabetic peripheral neuropathy (specifically sensorimotor
polyneuropathy), only orthostatic hypotension reflects autonomic nervous system dysfunction
affecting the cardiovascular system. Other signs of autonomic neuropathy include
gastroparesis, neurogenic bladder, erectile dysfunction, and sudomotor abnormalities.
Question 5:
A 28-year-old male presents with acute onset of "the worst headache of my life" followed by
brief loss of consciousness. CT head without contrast shows hyperdensity in the basal cisterns.
Lumbar puncture reveals xanthochromic CSF with elevated red blood cells. Which diagnosis is
most likely?
A. Migraine with aura
B. Tension-type headache
C. Subarachnoid hemorrhage
D. Cluster headache
Answer: C
Rationale: The thunderclap headache (sudden, severe, "worst headache of life"), brief LOC, CT
showing hyperdensity in basal cisterns (representing blood), and xanthochromic CSF
(yellow-tinged from bilirubin breakdown of RBCs) constitute the classic presentation of
aneurysmal subarachnoid hemorrhage (SAH). Non-contrast CT is 100% sensitive for SAH if
performed within 6 hours of symptom onset; sensitivity decreases after 12 hours.
Xanthochromia develops 12 hours after bleed and persists for approximately 2 weeks. Migraine,
tension-type, and cluster headaches do not produce these objective findings and are not
associated with sudden LOC or meningeal signs.
Question 6:
, A 52-year-old female presents with fatigue, weight gain, constipation, and cold intolerance.
Physical exam reveals dry skin, periorbital edema, and delayed deep tendon reflexes. TSH is
12.5 mIU/L (normal 0.4-4.0). Which additional finding would best confirm Hashimoto's
thyroiditis as the etiology?
A. Elevated free T4 level
B. Positive anti-thyroid peroxidase (anti-TPO) antibodies
C. Enlarged, tender thyroid gland
D. Elevated T3 uptake
Answer: B
Rationale: Positive anti-thyroid peroxidase (anti-TPO) antibodies are present in 90-95% of
patients with Hashimoto's thyroiditis and represent the most specific serologic marker for
autoimmune hypothyroidism. The clinical presentation with goiter (often firm, non-tender),
hypothyroid symptoms, and elevated TSH is classic. Elevated free T4 (A) would suggest
hyperthyroidism, not hypothyroidism. Tender thyroid (C) suggests subacute (de Quervain's)
thyroiditis. Elevated T3 uptake (D) is seen in hyperthyroidism or binding protein abnormalities.
Anti-TPO antibodies distinguish Hashimoto's from other causes of hypothyroidism (iatrogenic,
iodine deficiency, postpartum).
Question 7:
A 19-year-old college student presents with sore throat, fever, and fatigue. Physical exam
reveals tender anterior cervical lymphadenopathy, tonsillar exudates, and palatal petechiae.
Monospot test is negative. Which finding would most strongly suggest infectious
mononucleosis despite the negative heterophile antibody test?
A. Elevated absolute neutrophil count
B. Atypical lymphocytes >10% on peripheral smear
C. Elevated erythrocyte sedimentation rate (ESR)
D. Thrombocytosis
Answer: B
Rationale: Atypical lymphocytes (reactive T-cells) >10% on peripheral smear in the appropriate
clinical context is highly suggestive of infectious mononucleosis (EBV infection), even with a
negative Monospot test. The Monospot test has 70-90% sensitivity in the first week of illness,
rising to nearly 100% by week 3-4; false negatives are common early in disease. Atypical
lymphocytosis is a hallmark of EBV infection and distinguishes it from bacterial pharyngitis
