Barkley Post Test Exam – 2025–2026 – Questions
and Correct Answers – Comprehensive Nurse
Practitioner Board Review
Section 1: Advanced Pathophysiology (Questions 1–20)
Question 1
A 45-year-old patient presents with fatigue, weight gain, cold intolerance, and
constipation. Laboratory findings reveal elevated TSH and low free T4. What is the
most likely diagnosis?
A) Hyperthyroidism
B) Subclinical hypothyroidism
C) Primary hypothyroidism
D) Secondary hypothyroidism
Correct Answer: C) Primary hypothyroidism
Rationale: Primary hypothyroidism is characterized by elevated TSH due to
decreased feedback inhibition from low thyroid hormone levels (low free T4). The
classic symptoms include fatigue, weight gain, cold intolerance, and constipation.
Secondary hypothyroidism would show low TSH with low free T4 due to pituitary
dysfunction .
Question 2
Which neurotransmitter is most closely associated with the regulation of mood,
appetite, and sleep, and is often targeted in the treatment of depression?
A) Dopamine
B) GABA
C) Serotonin
D) Acetylcholine
, Correct Answer: C) Serotonin
Rationale: Serotonin plays a key role in mood regulation, appetite, and sleep.
SSRIs increase serotonin availability, alleviating depressive symptoms. Dopamine
relates more to reward and motivation, GABA to inhibition, and acetylcholine to
cognition .
Question 3
A patient with type 2 diabetes mellitus develops peripheral neuropathy. Which
pathophysiological mechanism is primarily responsible?
A) Autoimmune destruction of pancreatic beta cells
B) Hyperglycemia-induced oxidative stress and microvascular damage
C) Insulin receptor resistance in skeletal muscle
D) Decreased hepatic glucose production
Correct Answer: B) Hyperglycemia-induced oxidative stress and
microvascular damage
Rationale: Chronic hyperglycemia leads to oxidative stress, advanced glycation
end-products (AGEs), and microvascular damage, causing neuronal ischemia and
damage. This results in peripheral neuropathy, a common complication of
diabetes .
Question 4
A patient with heart failure exhibits jugular venous distention, peripheral edema,
and hepatomegaly. What type of heart failure does this represent?
A) Left-sided heart failure
B) Right-sided heart failure
C) High-output heart failure
D) Diastolic heart failure
, Correct Answer: B) Right-sided heart failure
Rationale: Right-sided heart failure leads to systemic venous congestion,
causing jugular venous distention, peripheral edema, hepatomegaly, and ascites.
Left-sided failure primarily causes pulmonary congestion (dyspnea, crackles) .
Question 5
A 12-year-old boy presents with a rash that initially appeared as an oval with a
crinkled appearance one week ago. Examination reveals a pruritic rash in a
Christmas tree pattern on his trunk. Which of the following is the most likely
cause?
A) Coxsackie virus
B) Erythema infectiosum
C) Lyme disease
D) Pityriasis rosea
Correct Answer: D) Pityriasis rosea
Rationale: Pityriasis rosea starts with a single herald patch (oval, salmon-
colored with collarette scaling and crinkled center), followed by secondary
eruption along Langer's lines giving a Christmas tree distribution on the trunk.
Coxsackie causes hand-foot-mouth, erythema infectiosum is slapped cheek, Lyme
is erythema migrans .
Question 6
A 17-year-old male is tall with a long, narrow face, thin extremities and fingers. His
arm span exceeds his height. These physical characteristics are consistent with
which disorder?
A) Marfan syndrome
B) Martin-Bell syndrome
, C) Klinefelter syndrome
D) Precocious puberty
Correct Answer: A) Marfan syndrome
Rationale: Marfan syndrome is a connective tissue disorder due to fibrillin-1
mutation. Hallmarks include tall stature, arachnodactyly, arm span greater than
height, dolichocephaly, pectus deformity, aortic root dilation, and ectopia lentis.
Klinefelter also presents with tall stature but with small testes and gynecomastia .
Question 7
Which of the following findings is most consistent with bipolar I disorder?
A) Hypomanic episodes only
B) At least one manic episode
C) Dysthymic episodes alternating with hypomania
D) Cyclothymic mood swings for 1 year
Correct Answer: B) At least one manic episode
Rationale: Bipolar I disorder requires at least one manic episode for diagnosis.
Hypomanic episodes alone characterize bipolar II disorder. Cyclothymic disorder
involves hypomanic symptoms and depressive symptoms lasting at least 2 years in
adults .
Question 8
A 72-year-old man presents with progressive fatigue, weight loss, and night
sweats over 3 months. Physical examination reveals splenomegaly. CBC shows
leukocytosis with a left shift and basophilia. Which diagnostic test is most
appropriate to confirm the suspected diagnosis?
A) Peripheral blood smear
B) PCR for BCR-ABL fusion gene
and Correct Answers – Comprehensive Nurse
Practitioner Board Review
Section 1: Advanced Pathophysiology (Questions 1–20)
Question 1
A 45-year-old patient presents with fatigue, weight gain, cold intolerance, and
constipation. Laboratory findings reveal elevated TSH and low free T4. What is the
most likely diagnosis?
A) Hyperthyroidism
B) Subclinical hypothyroidism
C) Primary hypothyroidism
D) Secondary hypothyroidism
Correct Answer: C) Primary hypothyroidism
Rationale: Primary hypothyroidism is characterized by elevated TSH due to
decreased feedback inhibition from low thyroid hormone levels (low free T4). The
classic symptoms include fatigue, weight gain, cold intolerance, and constipation.
Secondary hypothyroidism would show low TSH with low free T4 due to pituitary
dysfunction .
Question 2
Which neurotransmitter is most closely associated with the regulation of mood,
appetite, and sleep, and is often targeted in the treatment of depression?
A) Dopamine
B) GABA
C) Serotonin
D) Acetylcholine
, Correct Answer: C) Serotonin
Rationale: Serotonin plays a key role in mood regulation, appetite, and sleep.
SSRIs increase serotonin availability, alleviating depressive symptoms. Dopamine
relates more to reward and motivation, GABA to inhibition, and acetylcholine to
cognition .
Question 3
A patient with type 2 diabetes mellitus develops peripheral neuropathy. Which
pathophysiological mechanism is primarily responsible?
A) Autoimmune destruction of pancreatic beta cells
B) Hyperglycemia-induced oxidative stress and microvascular damage
C) Insulin receptor resistance in skeletal muscle
D) Decreased hepatic glucose production
Correct Answer: B) Hyperglycemia-induced oxidative stress and
microvascular damage
Rationale: Chronic hyperglycemia leads to oxidative stress, advanced glycation
end-products (AGEs), and microvascular damage, causing neuronal ischemia and
damage. This results in peripheral neuropathy, a common complication of
diabetes .
Question 4
A patient with heart failure exhibits jugular venous distention, peripheral edema,
and hepatomegaly. What type of heart failure does this represent?
A) Left-sided heart failure
B) Right-sided heart failure
C) High-output heart failure
D) Diastolic heart failure
, Correct Answer: B) Right-sided heart failure
Rationale: Right-sided heart failure leads to systemic venous congestion,
causing jugular venous distention, peripheral edema, hepatomegaly, and ascites.
Left-sided failure primarily causes pulmonary congestion (dyspnea, crackles) .
Question 5
A 12-year-old boy presents with a rash that initially appeared as an oval with a
crinkled appearance one week ago. Examination reveals a pruritic rash in a
Christmas tree pattern on his trunk. Which of the following is the most likely
cause?
A) Coxsackie virus
B) Erythema infectiosum
C) Lyme disease
D) Pityriasis rosea
Correct Answer: D) Pityriasis rosea
Rationale: Pityriasis rosea starts with a single herald patch (oval, salmon-
colored with collarette scaling and crinkled center), followed by secondary
eruption along Langer's lines giving a Christmas tree distribution on the trunk.
Coxsackie causes hand-foot-mouth, erythema infectiosum is slapped cheek, Lyme
is erythema migrans .
Question 6
A 17-year-old male is tall with a long, narrow face, thin extremities and fingers. His
arm span exceeds his height. These physical characteristics are consistent with
which disorder?
A) Marfan syndrome
B) Martin-Bell syndrome
, C) Klinefelter syndrome
D) Precocious puberty
Correct Answer: A) Marfan syndrome
Rationale: Marfan syndrome is a connective tissue disorder due to fibrillin-1
mutation. Hallmarks include tall stature, arachnodactyly, arm span greater than
height, dolichocephaly, pectus deformity, aortic root dilation, and ectopia lentis.
Klinefelter also presents with tall stature but with small testes and gynecomastia .
Question 7
Which of the following findings is most consistent with bipolar I disorder?
A) Hypomanic episodes only
B) At least one manic episode
C) Dysthymic episodes alternating with hypomania
D) Cyclothymic mood swings for 1 year
Correct Answer: B) At least one manic episode
Rationale: Bipolar I disorder requires at least one manic episode for diagnosis.
Hypomanic episodes alone characterize bipolar II disorder. Cyclothymic disorder
involves hypomanic symptoms and depressive symptoms lasting at least 2 years in
adults .
Question 8
A 72-year-old man presents with progressive fatigue, weight loss, and night
sweats over 3 months. Physical examination reveals splenomegaly. CBC shows
leukocytosis with a left shift and basophilia. Which diagnostic test is most
appropriate to confirm the suspected diagnosis?
A) Peripheral blood smear
B) PCR for BCR-ABL fusion gene
