COMSAE Phase 3 Form CSA 105 Advanced Clinical
Synthesis Exam Practice Questions & [Verified
Answers], Plus Explained Rationales|2026 Latest
Update| Instant Download PDF
1. A 67-year-old man presents with progressive exertional dyspnea,
orthopnea, and lower-extremity edema. Echocardiography reveals
a left ventricular ejection fraction of 25%. Which neurohormonal
adaptation most directly contributes to worsening ventricular
remodeling in this patient?
A. Increased atrial natriuretic peptide secretion
B. Suppression of renin release
C. Activation of the sympathetic nervous system and renin-angiotensin-
aldosterone system
D. Increased nitric oxide production
E. Reduced endothelin release
Answer: C. Activation of the sympathetic nervous system and renin-
angiotensin-aldosterone system
Rationale: Chronic heart failure stimulates sympathetic activation and
RAAS activity, initially maintaining perfusion but ultimately causing
myocardial fibrosis, ventricular dilation, increased afterload, and
adverse remodeling. Natriuretic peptides oppose these effects but are
insufficient to prevent progression.
2. A 58-year-old woman develops sudden-onset right-sided
weakness and aphasia. Noncontrast head CT is negative for
hemorrhage. Symptoms began 90 minutes ago. Which is the most
appropriate next step?
,A. Aspirin administration only
B. Intravenous thrombolytic therapy after eligibility confirmation
C. Immediate carotid endarterectomy
D. Observation for 24 hours
E. Heparin infusion
Answer: B. Intravenous thrombolytic therapy after eligibility
confirmation
Rationale: Patients presenting within the thrombolytic treatment
window and without contraindications should receive intravenous
thrombolysis. Early reperfusion significantly improves neurological
outcomes in acute ischemic stroke.
3. A 24-year-old woman presents with fatigue, jaundice, and dark
urine. Laboratory studies show elevated indirect bilirubin,
elevated LDH, and decreased haptoglobin. Peripheral smear
demonstrates spherocytes. Which diagnosis is most likely?
A. Iron deficiency anemia
B. Hereditary spherocytosis
C. Thalassemia minor
D. Anemia of chronic disease
E. Lead poisoning
Answer: B. Hereditary spherocytosis
Rationale: Spherocytes, hemolysis markers, and jaundice strongly
suggest hereditary spherocytosis, a membrane cytoskeletal defect
involving spectrin, ankyrin, or related proteins.
4. A 72-year-old smoker presents with hematuria and weight loss. CT
reveals a renal mass arising from the proximal tubule epithelium.
Which paraneoplastic syndrome is most commonly associated
with this malignancy?
,A. Hyperparathyroidism
B. SIADH
C. Polycythemia due to erythropoietin production
D. Hyperthyroidism
E. Diabetes insipidus
Answer: C. Polycythemia due to erythropoietin production
Rationale: Renal cell carcinoma commonly produces ectopic
erythropoietin, causing secondary polycythemia. Other paraneoplastic
manifestations include hypercalcemia and hypertension.
5. A patient with septic shock remains hypotensive despite
aggressive fluid resuscitation. Which vasopressor is considered
first-line therapy?
A. Dopamine
B. Phenylephrine
C. Norepinephrine
D. Epinephrine
E. Vasopressin
Answer: C. Norepinephrine
Rationale: Norepinephrine is the preferred initial vasopressor in septic
shock because it effectively increases vascular tone while minimizing
arrhythmogenic effects compared with dopamine.
6. A 31-year-old woman develops heat intolerance, weight loss, and
palpitations. Laboratory testing demonstrates elevated free T4
and suppressed TSH. Diffuse radioactive iodine uptake is present.
Which mechanism best explains the disease?
A. Destruction of thyroid follicles
B. TSH receptor-stimulating antibodies
, C. Pituitary adenoma
D. Excess iodine deficiency
E. Reduced thyroid hormone synthesis
Answer: B. TSH receptor-stimulating antibodies
Rationale: Graves disease results from IgG autoantibodies stimulating
TSH receptors, causing diffuse hyperthyroidism and increased
radioactive iodine uptake.
7. A patient develops chest pain relieved by leaning forward. ECG
demonstrates diffuse ST-segment elevation and PR depression.
Which diagnosis is most likely?
A. STEMI
B. Stable angina
C. Acute pericarditis
D. Aortic dissection
E. Pulmonary embolism
Answer: C. Acute pericarditis
Rationale: Positional chest pain, diffuse ST elevation, and PR
depression are classic findings of acute pericarditis.
8. A 45-year-old man presents with severe epigastric pain radiating
to the back. Serum lipase is markedly elevated. Which
complication carries the highest mortality during the early phase
of acute pancreatitis?
A. Pseudocyst formation
B. Pancreatic insufficiency
C. Systemic inflammatory response syndrome with multiorgan failure
D. Diabetes mellitus
E. Biliary obstruction
Synthesis Exam Practice Questions & [Verified
Answers], Plus Explained Rationales|2026 Latest
Update| Instant Download PDF
1. A 67-year-old man presents with progressive exertional dyspnea,
orthopnea, and lower-extremity edema. Echocardiography reveals
a left ventricular ejection fraction of 25%. Which neurohormonal
adaptation most directly contributes to worsening ventricular
remodeling in this patient?
A. Increased atrial natriuretic peptide secretion
B. Suppression of renin release
C. Activation of the sympathetic nervous system and renin-angiotensin-
aldosterone system
D. Increased nitric oxide production
E. Reduced endothelin release
Answer: C. Activation of the sympathetic nervous system and renin-
angiotensin-aldosterone system
Rationale: Chronic heart failure stimulates sympathetic activation and
RAAS activity, initially maintaining perfusion but ultimately causing
myocardial fibrosis, ventricular dilation, increased afterload, and
adverse remodeling. Natriuretic peptides oppose these effects but are
insufficient to prevent progression.
2. A 58-year-old woman develops sudden-onset right-sided
weakness and aphasia. Noncontrast head CT is negative for
hemorrhage. Symptoms began 90 minutes ago. Which is the most
appropriate next step?
,A. Aspirin administration only
B. Intravenous thrombolytic therapy after eligibility confirmation
C. Immediate carotid endarterectomy
D. Observation for 24 hours
E. Heparin infusion
Answer: B. Intravenous thrombolytic therapy after eligibility
confirmation
Rationale: Patients presenting within the thrombolytic treatment
window and without contraindications should receive intravenous
thrombolysis. Early reperfusion significantly improves neurological
outcomes in acute ischemic stroke.
3. A 24-year-old woman presents with fatigue, jaundice, and dark
urine. Laboratory studies show elevated indirect bilirubin,
elevated LDH, and decreased haptoglobin. Peripheral smear
demonstrates spherocytes. Which diagnosis is most likely?
A. Iron deficiency anemia
B. Hereditary spherocytosis
C. Thalassemia minor
D. Anemia of chronic disease
E. Lead poisoning
Answer: B. Hereditary spherocytosis
Rationale: Spherocytes, hemolysis markers, and jaundice strongly
suggest hereditary spherocytosis, a membrane cytoskeletal defect
involving spectrin, ankyrin, or related proteins.
4. A 72-year-old smoker presents with hematuria and weight loss. CT
reveals a renal mass arising from the proximal tubule epithelium.
Which paraneoplastic syndrome is most commonly associated
with this malignancy?
,A. Hyperparathyroidism
B. SIADH
C. Polycythemia due to erythropoietin production
D. Hyperthyroidism
E. Diabetes insipidus
Answer: C. Polycythemia due to erythropoietin production
Rationale: Renal cell carcinoma commonly produces ectopic
erythropoietin, causing secondary polycythemia. Other paraneoplastic
manifestations include hypercalcemia and hypertension.
5. A patient with septic shock remains hypotensive despite
aggressive fluid resuscitation. Which vasopressor is considered
first-line therapy?
A. Dopamine
B. Phenylephrine
C. Norepinephrine
D. Epinephrine
E. Vasopressin
Answer: C. Norepinephrine
Rationale: Norepinephrine is the preferred initial vasopressor in septic
shock because it effectively increases vascular tone while minimizing
arrhythmogenic effects compared with dopamine.
6. A 31-year-old woman develops heat intolerance, weight loss, and
palpitations. Laboratory testing demonstrates elevated free T4
and suppressed TSH. Diffuse radioactive iodine uptake is present.
Which mechanism best explains the disease?
A. Destruction of thyroid follicles
B. TSH receptor-stimulating antibodies
, C. Pituitary adenoma
D. Excess iodine deficiency
E. Reduced thyroid hormone synthesis
Answer: B. TSH receptor-stimulating antibodies
Rationale: Graves disease results from IgG autoantibodies stimulating
TSH receptors, causing diffuse hyperthyroidism and increased
radioactive iodine uptake.
7. A patient develops chest pain relieved by leaning forward. ECG
demonstrates diffuse ST-segment elevation and PR depression.
Which diagnosis is most likely?
A. STEMI
B. Stable angina
C. Acute pericarditis
D. Aortic dissection
E. Pulmonary embolism
Answer: C. Acute pericarditis
Rationale: Positional chest pain, diffuse ST elevation, and PR
depression are classic findings of acute pericarditis.
8. A 45-year-old man presents with severe epigastric pain radiating
to the back. Serum lipase is markedly elevated. Which
complication carries the highest mortality during the early phase
of acute pancreatitis?
A. Pseudocyst formation
B. Pancreatic insufficiency
C. Systemic inflammatory response syndrome with multiorgan failure
D. Diabetes mellitus
E. Biliary obstruction
