COMSAE Phase 3 Form CSA 116 Advanced
Clinical Synthesis Exam Practice Questions &
[Verified Answers], Plus Explained
Rationales|2026 Latest Update| Instant
Download PDF
1. A 68-year-old man with a history of hypertension, chronic kidney
disease stage 3, and type 2 diabetes presents with crushing
substernal chest pain radiating to the left arm for 90 minutes. ECG
demonstrates ST-segment elevation in leads II, III, and aVF. Blood
pressure is 88/54 mmHg, heart rate is 48/min, and jugular venous
distention is present. Which additional finding is most consistent
with the most likely complication?
A. Pulmonary edema with diffuse crackles
B. Hyperdynamic carotid pulse
C. Clear lung fields with elevated JVP
D. Widened pulse pressure
E. Holosystolic murmur at the apex
Answer: C. Clear lung fields with elevated JVP
Rationale: Inferior wall myocardial infarction involving the right
ventricle commonly presents with hypotension, elevated jugular
venous pressure, and clear lungs. Right ventricular infarction reduces
preload to the left ventricle while not producing significant pulmonary
congestion initially.
2. A 27-year-old woman presents with fatigue, pallor, and
paresthesias. Laboratory studies reveal hemoglobin 8.2 g/dL, MCV
, 118 fL, elevated methylmalonic acid, and hypersegmented
neutrophils. Which mechanism best explains her neurologic
symptoms?
A. Impaired heme synthesis
B. Defective DNA replication only
C. Demyelination of dorsal columns and lateral corticospinal tracts
D. Excess iron deposition in neurons
E. Increased erythropoietin secretion
Answer: C. Demyelination of dorsal columns and lateral corticospinal
tracts
Rationale: Vitamin B12 deficiency causes subacute combined
degeneration affecting the posterior columns and corticospinal tracts,
producing sensory ataxia, paresthesias, and weakness. Elevated
methylmalonic acid distinguishes B12 deficiency from folate
deficiency.
3. A 55-year-old smoker presents with hematuria. CT imaging reveals
a renal mass. Histology demonstrates cells with clear cytoplasm
arranged in nests surrounded by delicate vasculature. Which
paraneoplastic syndrome is most likely?
A. SIADH
B. Erythrocytosis
C. Hyperthyroidism
D. Myasthenia gravis
E. Acromegaly
Answer: B. Erythrocytosis
Rationale: Clear cell renal cell carcinoma may produce ectopic
erythropoietin, resulting in secondary polycythemia. Hematuria, flank
pain, and a renal mass represent the classic triad.
, 4. A hospitalized patient develops fever five days after insertion of a
central venous catheter. Blood cultures grow gram-positive cocci
in clusters. Which virulence factor most strongly contributes to
the organism's pathogenicity?
A. M protein
B. Protein A
C. Capsule of poly-D-glutamate
D. Endotoxin
E. P fimbriae
Answer: B. Protein A
Rationale: Staphylococcus aureus possesses Protein A, which binds the
Fc portion of IgG and impairs opsonization. It is a common cause of
catheter-associated bloodstream infections.
5. A 72-year-old woman develops sudden aphasia and right
hemiparesis. CT angiography demonstrates occlusion of the left
middle cerebral artery. Which deficit is most likely?
A. Left homonymous hemianopia
B. Right facial and arm weakness greater than leg weakness
C. Bilateral lower extremity paralysis
D. Contralateral cerebellar ataxia
E. Isolated memory loss
Answer: B. Right facial and arm weakness greater than leg weakness
Rationale: MCA strokes predominantly affect face and upper
extremity motor and sensory regions. Dominant hemisphere
involvement also produces aphasia.
, 6. A patient with septic shock remains hypotensive despite fluid
resuscitation. Which vasopressor is recommended as first-line
therapy?
A. Dopamine
B. Phenylephrine
C. Norepinephrine
D. Dobutamine
E. Epinephrine
Answer: C. Norepinephrine
Rationale: Norepinephrine is the preferred first-line vasopressor in
septic shock because of potent alpha-1 vasoconstriction with limited
tachyarrhythmia risk.
7. A 30-year-old woman develops heat intolerance, tremor, and
weight loss. Laboratory studies reveal suppressed TSH and
elevated free T4. Radioactive iodine uptake is diffusely increased.
Which antibody is responsible?
A. Anti-thyroglobulin antibody
B. TSH receptor-stimulating antibody
C. Anti-centromere antibody
D. Anti-Scl-70 antibody
E. Anti-Jo-1 antibody
Answer: B. TSH receptor-stimulating antibody
Rationale: Graves disease is caused by thyroid-stimulating
immunoglobulins that activate the TSH receptor, leading to diffuse
thyroid hyperfunction.
Clinical Synthesis Exam Practice Questions &
[Verified Answers], Plus Explained
Rationales|2026 Latest Update| Instant
Download PDF
1. A 68-year-old man with a history of hypertension, chronic kidney
disease stage 3, and type 2 diabetes presents with crushing
substernal chest pain radiating to the left arm for 90 minutes. ECG
demonstrates ST-segment elevation in leads II, III, and aVF. Blood
pressure is 88/54 mmHg, heart rate is 48/min, and jugular venous
distention is present. Which additional finding is most consistent
with the most likely complication?
A. Pulmonary edema with diffuse crackles
B. Hyperdynamic carotid pulse
C. Clear lung fields with elevated JVP
D. Widened pulse pressure
E. Holosystolic murmur at the apex
Answer: C. Clear lung fields with elevated JVP
Rationale: Inferior wall myocardial infarction involving the right
ventricle commonly presents with hypotension, elevated jugular
venous pressure, and clear lungs. Right ventricular infarction reduces
preload to the left ventricle while not producing significant pulmonary
congestion initially.
2. A 27-year-old woman presents with fatigue, pallor, and
paresthesias. Laboratory studies reveal hemoglobin 8.2 g/dL, MCV
, 118 fL, elevated methylmalonic acid, and hypersegmented
neutrophils. Which mechanism best explains her neurologic
symptoms?
A. Impaired heme synthesis
B. Defective DNA replication only
C. Demyelination of dorsal columns and lateral corticospinal tracts
D. Excess iron deposition in neurons
E. Increased erythropoietin secretion
Answer: C. Demyelination of dorsal columns and lateral corticospinal
tracts
Rationale: Vitamin B12 deficiency causes subacute combined
degeneration affecting the posterior columns and corticospinal tracts,
producing sensory ataxia, paresthesias, and weakness. Elevated
methylmalonic acid distinguishes B12 deficiency from folate
deficiency.
3. A 55-year-old smoker presents with hematuria. CT imaging reveals
a renal mass. Histology demonstrates cells with clear cytoplasm
arranged in nests surrounded by delicate vasculature. Which
paraneoplastic syndrome is most likely?
A. SIADH
B. Erythrocytosis
C. Hyperthyroidism
D. Myasthenia gravis
E. Acromegaly
Answer: B. Erythrocytosis
Rationale: Clear cell renal cell carcinoma may produce ectopic
erythropoietin, resulting in secondary polycythemia. Hematuria, flank
pain, and a renal mass represent the classic triad.
, 4. A hospitalized patient develops fever five days after insertion of a
central venous catheter. Blood cultures grow gram-positive cocci
in clusters. Which virulence factor most strongly contributes to
the organism's pathogenicity?
A. M protein
B. Protein A
C. Capsule of poly-D-glutamate
D. Endotoxin
E. P fimbriae
Answer: B. Protein A
Rationale: Staphylococcus aureus possesses Protein A, which binds the
Fc portion of IgG and impairs opsonization. It is a common cause of
catheter-associated bloodstream infections.
5. A 72-year-old woman develops sudden aphasia and right
hemiparesis. CT angiography demonstrates occlusion of the left
middle cerebral artery. Which deficit is most likely?
A. Left homonymous hemianopia
B. Right facial and arm weakness greater than leg weakness
C. Bilateral lower extremity paralysis
D. Contralateral cerebellar ataxia
E. Isolated memory loss
Answer: B. Right facial and arm weakness greater than leg weakness
Rationale: MCA strokes predominantly affect face and upper
extremity motor and sensory regions. Dominant hemisphere
involvement also produces aphasia.
, 6. A patient with septic shock remains hypotensive despite fluid
resuscitation. Which vasopressor is recommended as first-line
therapy?
A. Dopamine
B. Phenylephrine
C. Norepinephrine
D. Dobutamine
E. Epinephrine
Answer: C. Norepinephrine
Rationale: Norepinephrine is the preferred first-line vasopressor in
septic shock because of potent alpha-1 vasoconstriction with limited
tachyarrhythmia risk.
7. A 30-year-old woman develops heat intolerance, tremor, and
weight loss. Laboratory studies reveal suppressed TSH and
elevated free T4. Radioactive iodine uptake is diffusely increased.
Which antibody is responsible?
A. Anti-thyroglobulin antibody
B. TSH receptor-stimulating antibody
C. Anti-centromere antibody
D. Anti-Scl-70 antibody
E. Anti-Jo-1 antibody
Answer: B. TSH receptor-stimulating antibody
Rationale: Graves disease is caused by thyroid-stimulating
immunoglobulins that activate the TSH receptor, leading to diffuse
thyroid hyperfunction.
