COMSAE Phase 1 Form 115 Practice
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A| Instant
Download Pdf
1. A 65-year-old man develops crushing substernal chest pain. ECG
shows ST elevations in leads II, III, and aVF. Which coronary artery is
most likely occluded?
A. Left anterior descending artery
B. Left circumflex artery
C. Right coronary artery
D. Diagonal branch
Answer: C. Right coronary artery
Rationale: Inferior wall myocardial infarctions are most commonly caused
by occlusion of the right coronary artery.
, 2. A patient presents with hypercalcemia, kidney stones, and elevated
parathyroid hormone levels. What is the most likely diagnosis?
A. Hypoparathyroidism
B. Primary hyperparathyroidism
C. Vitamin D deficiency
D. Osteomalacia
Answer: B. Primary hyperparathyroidism
Rationale: Elevated calcium and PTH levels with nephrolithiasis are classic
findings of primary hyperparathyroidism.
3. Which cranial nerve is responsible for lateral eye movement?
A. Oculomotor nerve
B. Trochlear nerve
C. Trigeminal nerve
D. Abducens nerve
Answer: D. Abducens nerve
Rationale: Cranial nerve VI innervates the lateral rectus muscle, which
abducts the eye.
4. A patient with chronic alcoholism develops confusion,
ophthalmoplegia, and ataxia. Which vitamin deficiency is most likely?
,A. Vitamin B12
B. Niacin
C. Thiamine
D. Pyridoxine
Answer: C. Thiamine
Rationale: Wernicke encephalopathy results from thiamine deficiency.
5. Which organism is the most common cause of community-acquired
pneumonia?
A. Mycoplasma pneumoniae
B. Haemophilus influenzae
C. Streptococcus pneumoniae
D. Legionella pneumophila
Answer: C. Streptococcus pneumoniae
Rationale: Streptococcus pneumoniae remains the leading cause of
community-acquired pneumonia.
6. A patient has elevated PT and PTT with normal platelet count. Which
condition is most likely?
A. Immune thrombocytopenia
B. Hemophilia A
, C. Severe liver disease
D. Von Willebrand disease
Answer: C. Severe liver disease
Rationale: The liver synthesizes most clotting factors; liver failure prolongs
both PT and PTT.
7. Which nephron segment is most permeable to water?
A. Thick ascending limb
B. Distal convoluted tubule
C. Proximal convoluted tubule
D. Macula densa
Answer: C. Proximal convoluted tubule
Rationale: Approximately 65% of filtered water is reabsorbed in the
proximal tubule.
8. A child develops a barking cough and inspiratory stridor. Diagnosis?
A. Epiglottitis
B. Bronchiolitis
C. Asthma
D. Croup
Answer: D. Croup
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A| Instant
Download Pdf
1. A 65-year-old man develops crushing substernal chest pain. ECG
shows ST elevations in leads II, III, and aVF. Which coronary artery is
most likely occluded?
A. Left anterior descending artery
B. Left circumflex artery
C. Right coronary artery
D. Diagonal branch
Answer: C. Right coronary artery
Rationale: Inferior wall myocardial infarctions are most commonly caused
by occlusion of the right coronary artery.
, 2. A patient presents with hypercalcemia, kidney stones, and elevated
parathyroid hormone levels. What is the most likely diagnosis?
A. Hypoparathyroidism
B. Primary hyperparathyroidism
C. Vitamin D deficiency
D. Osteomalacia
Answer: B. Primary hyperparathyroidism
Rationale: Elevated calcium and PTH levels with nephrolithiasis are classic
findings of primary hyperparathyroidism.
3. Which cranial nerve is responsible for lateral eye movement?
A. Oculomotor nerve
B. Trochlear nerve
C. Trigeminal nerve
D. Abducens nerve
Answer: D. Abducens nerve
Rationale: Cranial nerve VI innervates the lateral rectus muscle, which
abducts the eye.
4. A patient with chronic alcoholism develops confusion,
ophthalmoplegia, and ataxia. Which vitamin deficiency is most likely?
,A. Vitamin B12
B. Niacin
C. Thiamine
D. Pyridoxine
Answer: C. Thiamine
Rationale: Wernicke encephalopathy results from thiamine deficiency.
5. Which organism is the most common cause of community-acquired
pneumonia?
A. Mycoplasma pneumoniae
B. Haemophilus influenzae
C. Streptococcus pneumoniae
D. Legionella pneumophila
Answer: C. Streptococcus pneumoniae
Rationale: Streptococcus pneumoniae remains the leading cause of
community-acquired pneumonia.
6. A patient has elevated PT and PTT with normal platelet count. Which
condition is most likely?
A. Immune thrombocytopenia
B. Hemophilia A
, C. Severe liver disease
D. Von Willebrand disease
Answer: C. Severe liver disease
Rationale: The liver synthesizes most clotting factors; liver failure prolongs
both PT and PTT.
7. Which nephron segment is most permeable to water?
A. Thick ascending limb
B. Distal convoluted tubule
C. Proximal convoluted tubule
D. Macula densa
Answer: C. Proximal convoluted tubule
Rationale: Approximately 65% of filtered water is reabsorbed in the
proximal tubule.
8. A child develops a barking cough and inspiratory stridor. Diagnosis?
A. Epiglottitis
B. Bronchiolitis
C. Asthma
D. Croup
Answer: D. Croup
