COMSAE Phase 3 Form CSA 108 Advanced
Clinical Synthesis Exam Practice Questions &
[Verified Answers], Plus Explained
Rationales|2026 Latest Update| Instant
Download PDF
1. A 67-year-old man with a history of hypertension, type 2 diabetes,
and chronic kidney disease presents with crushing substernal
chest pain radiating to the left arm. ECG demonstrates ST-
segment elevations in leads II, III, and aVF. Blood pressure is
84/52 mm Hg. Which finding most strongly suggests right
ventricular involvement?
A. Pulmonary crackles
B. Elevated BNP level
C. Jugular venous distention with clear lungs
D. Diffuse wheezing
E. Hyperdynamic apex beat
Rationale: Inferior myocardial infarctions involving the right ventricle
often present with hypotension, elevated jugular venous pressure, and
clear lung fields due to impaired right ventricular filling and reduced
pulmonary congestion.
2. A 25-year-old woman develops fever, hypotension, diffuse
erythematous rash, and multiorgan dysfunction 2 days after nasal
packing for epistaxis. Which organism is the most likely cause?
A. Streptococcus pneumoniae
B. Staphylococcus aureus
C. Klebsiella pneumoniae
,D. Neisseria meningitidis
E. Pseudomonas aeruginosa
Rationale: Toxic shock syndrome is classically caused by
Staphylococcus aureus producing toxic shock syndrome toxin-1, a
superantigen causing massive cytokine release.
3. A 58-year-old smoker presents with hematuria. CT imaging reveals
a renal mass. Which paraneoplastic syndrome is most commonly
associated with renal cell carcinoma?
A. SIADH
B. Hyperthyroidism
C. Polycythemia due to erythropoietin production
D. Cushing syndrome
E. Acromegaly
Rationale: Renal cell carcinoma frequently produces ectopic
erythropoietin, resulting in secondary polycythemia.
4. A patient develops sudden dyspnea 5 days after total hip
arthroplasty. Oxygen saturation is 86%. CT angiography confirms
pulmonary embolism. What is the most appropriate initial
treatment in a hemodynamically stable patient?
A. Emergent thrombolysis
B. Surgical embolectomy
C. Inferior vena cava filter alone
D. Anticoagulation with heparin
E. Observation
Rationale: Stable pulmonary embolism is treated initially with
anticoagulation. Thrombolysis is generally reserved for massive PE
with hemodynamic instability.
, 5. A 43-year-old woman presents with fatigue, pruritus, elevated
alkaline phosphatase, and positive antimitochondrial antibodies.
What is the most likely diagnosis?
A. Autoimmune hepatitis
B. Primary sclerosing cholangitis
C. Viral hepatitis C
D. Primary biliary cholangitis
E. Hemochromatosis
Rationale: Primary biliary cholangitis is characterized by autoimmune
destruction of intrahepatic bile ducts and positive antimitochondrial
antibodies.
6. A newborn develops bilious vomiting within hours of birth.
Abdominal radiograph demonstrates a double-bubble sign. Which
diagnosis is most likely?
A. Hirschsprung disease
B. Intussusception
C. Necrotizing enterocolitis
D. Meconium ileus
E. Duodenal atresia
Rationale: Duodenal atresia presents with bilious vomiting and the
classic double-bubble sign resulting from obstruction of the proximal
duodenum.
7. Which electrolyte abnormality is most likely in a patient with
severe hyperaldosteronism?
A. Hyperkalemia and metabolic acidosis
B. Hypercalcemia and alkalosis
C. Hypokalemia and metabolic alkalosis
, D. Hypermagnesemia and acidosis
E. Hyponatremia and acidosis
Rationale: Aldosterone promotes potassium and hydrogen ion
excretion, leading to hypokalemia and metabolic alkalosis.
8. A patient develops progressive ascending weakness following a
gastrointestinal illness. CSF demonstrates elevated protein with
normal cell count. What is the diagnosis?
A. Myasthenia gravis
B. Multiple sclerosis
C. Amyotrophic lateral sclerosis
D. Botulism
E. Guillain-Barré syndrome
Rationale: Albuminocytologic dissociation is characteristic of Guillain-
Barré syndrome.
9. A 72-year-old man suddenly loses vision in one eye. Fundoscopy
reveals a cherry-red spot. What is the most likely diagnosis?
A. Retinal detachment
B. Acute glaucoma
C. Macular degeneration
D. Central retinal artery occlusion
E. Optic neuritis
Rationale: Central retinal artery occlusion causes painless monocular
vision loss and a cherry-red spot on examination.
10. A patient with chronic alcohol use develops confusion,
ataxia, and ophthalmoplegia. Which vitamin deficiency is
responsible?
Clinical Synthesis Exam Practice Questions &
[Verified Answers], Plus Explained
Rationales|2026 Latest Update| Instant
Download PDF
1. A 67-year-old man with a history of hypertension, type 2 diabetes,
and chronic kidney disease presents with crushing substernal
chest pain radiating to the left arm. ECG demonstrates ST-
segment elevations in leads II, III, and aVF. Blood pressure is
84/52 mm Hg. Which finding most strongly suggests right
ventricular involvement?
A. Pulmonary crackles
B. Elevated BNP level
C. Jugular venous distention with clear lungs
D. Diffuse wheezing
E. Hyperdynamic apex beat
Rationale: Inferior myocardial infarctions involving the right ventricle
often present with hypotension, elevated jugular venous pressure, and
clear lung fields due to impaired right ventricular filling and reduced
pulmonary congestion.
2. A 25-year-old woman develops fever, hypotension, diffuse
erythematous rash, and multiorgan dysfunction 2 days after nasal
packing for epistaxis. Which organism is the most likely cause?
A. Streptococcus pneumoniae
B. Staphylococcus aureus
C. Klebsiella pneumoniae
,D. Neisseria meningitidis
E. Pseudomonas aeruginosa
Rationale: Toxic shock syndrome is classically caused by
Staphylococcus aureus producing toxic shock syndrome toxin-1, a
superantigen causing massive cytokine release.
3. A 58-year-old smoker presents with hematuria. CT imaging reveals
a renal mass. Which paraneoplastic syndrome is most commonly
associated with renal cell carcinoma?
A. SIADH
B. Hyperthyroidism
C. Polycythemia due to erythropoietin production
D. Cushing syndrome
E. Acromegaly
Rationale: Renal cell carcinoma frequently produces ectopic
erythropoietin, resulting in secondary polycythemia.
4. A patient develops sudden dyspnea 5 days after total hip
arthroplasty. Oxygen saturation is 86%. CT angiography confirms
pulmonary embolism. What is the most appropriate initial
treatment in a hemodynamically stable patient?
A. Emergent thrombolysis
B. Surgical embolectomy
C. Inferior vena cava filter alone
D. Anticoagulation with heparin
E. Observation
Rationale: Stable pulmonary embolism is treated initially with
anticoagulation. Thrombolysis is generally reserved for massive PE
with hemodynamic instability.
, 5. A 43-year-old woman presents with fatigue, pruritus, elevated
alkaline phosphatase, and positive antimitochondrial antibodies.
What is the most likely diagnosis?
A. Autoimmune hepatitis
B. Primary sclerosing cholangitis
C. Viral hepatitis C
D. Primary biliary cholangitis
E. Hemochromatosis
Rationale: Primary biliary cholangitis is characterized by autoimmune
destruction of intrahepatic bile ducts and positive antimitochondrial
antibodies.
6. A newborn develops bilious vomiting within hours of birth.
Abdominal radiograph demonstrates a double-bubble sign. Which
diagnosis is most likely?
A. Hirschsprung disease
B. Intussusception
C. Necrotizing enterocolitis
D. Meconium ileus
E. Duodenal atresia
Rationale: Duodenal atresia presents with bilious vomiting and the
classic double-bubble sign resulting from obstruction of the proximal
duodenum.
7. Which electrolyte abnormality is most likely in a patient with
severe hyperaldosteronism?
A. Hyperkalemia and metabolic acidosis
B. Hypercalcemia and alkalosis
C. Hypokalemia and metabolic alkalosis
, D. Hypermagnesemia and acidosis
E. Hyponatremia and acidosis
Rationale: Aldosterone promotes potassium and hydrogen ion
excretion, leading to hypokalemia and metabolic alkalosis.
8. A patient develops progressive ascending weakness following a
gastrointestinal illness. CSF demonstrates elevated protein with
normal cell count. What is the diagnosis?
A. Myasthenia gravis
B. Multiple sclerosis
C. Amyotrophic lateral sclerosis
D. Botulism
E. Guillain-Barré syndrome
Rationale: Albuminocytologic dissociation is characteristic of Guillain-
Barré syndrome.
9. A 72-year-old man suddenly loses vision in one eye. Fundoscopy
reveals a cherry-red spot. What is the most likely diagnosis?
A. Retinal detachment
B. Acute glaucoma
C. Macular degeneration
D. Central retinal artery occlusion
E. Optic neuritis
Rationale: Central retinal artery occlusion causes painless monocular
vision loss and a cherry-red spot on examination.
10. A patient with chronic alcohol use develops confusion,
ataxia, and ophthalmoplegia. Which vitamin deficiency is
responsible?
