COMSAE Phase 3 Assessment Form A
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1.
A 62-year-old man presents with chest pain radiating to the left arm.
ECG shows ST elevation in leads II, III, and aVF. Which artery is most
likely occluded?
A) Left anterior descending artery
B) Right coronary artery
C) Left circumflex artery
D) Posterior descending artery
Answer: B
Rationale: ST elevation in II, III, and aVF indicates an inferior wall
myocardial infarction, most commonly caused by occlusion of the right
coronary artery, which supplies the inferior portion of the heart in
most individuals.
,2.
A patient with COPD presents with worsening dyspnea. ABG shows pH
7.30, PaCO₂ 60 mmHg, HCO₃⁻ 34 mEq/L. What is the primary disorder?
A) Metabolic acidosis
B) Respiratory acidosis with compensation
C) Metabolic alkalosis
D) Respiratory alkalosis
Answer: B
Rationale: Elevated PaCO₂ with low pH indicates respiratory acidosis.
The elevated bicarbonate suggests renal compensation, consistent
with chronic COPD.
3.
Which vitamin deficiency is most associated with Wernicke
encephalopathy?
A) Vitamin B6
B) Vitamin B1
C) Vitamin B12
D) Vitamin B3
Answer: B
Rationale: Thiamine (B1) deficiency leads to Wernicke encephalopathy,
,classically seen in alcohol use disorder, characterized by confusion,
ataxia, and ophthalmoplegia.
4.
A child presents with barking cough and inspiratory stridor. What is the
most likely diagnosis?
A) Epiglottitis
B) Bronchiolitis
C) Croup
D) Asthma
Answer: C
Rationale: Croup (laryngotracheobronchitis) presents with a barking
cough and inspiratory stridor due to upper airway inflammation,
commonly caused by parainfluenza virus.
5.
Which organism is most commonly responsible for community-acquired
pneumonia in a healthy adult?
A) Klebsiella pneumoniae
B) Streptococcus pneumoniae
, C) Pseudomonas aeruginosa
D) Mycoplasma tuberculosis
Answer: B
Rationale: Streptococcus pneumoniae is the most common cause of
community-acquired pneumonia in otherwise healthy adults.
6.
A patient presents with tremor at rest, bradykinesia, and rigidity. Which
structure is primarily affected?
A) Cerebellum
B) Substantia nigra
C) Hippocampus
D) Thalamus
Answer: B
Rationale: Parkinson disease is caused by degeneration of
dopaminergic neurons in the substantia nigra pars compacta.
7.
Which condition is associated with anti-CCP antibodies?
A) Systemic lupus erythematosus
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1.
A 62-year-old man presents with chest pain radiating to the left arm.
ECG shows ST elevation in leads II, III, and aVF. Which artery is most
likely occluded?
A) Left anterior descending artery
B) Right coronary artery
C) Left circumflex artery
D) Posterior descending artery
Answer: B
Rationale: ST elevation in II, III, and aVF indicates an inferior wall
myocardial infarction, most commonly caused by occlusion of the right
coronary artery, which supplies the inferior portion of the heart in
most individuals.
,2.
A patient with COPD presents with worsening dyspnea. ABG shows pH
7.30, PaCO₂ 60 mmHg, HCO₃⁻ 34 mEq/L. What is the primary disorder?
A) Metabolic acidosis
B) Respiratory acidosis with compensation
C) Metabolic alkalosis
D) Respiratory alkalosis
Answer: B
Rationale: Elevated PaCO₂ with low pH indicates respiratory acidosis.
The elevated bicarbonate suggests renal compensation, consistent
with chronic COPD.
3.
Which vitamin deficiency is most associated with Wernicke
encephalopathy?
A) Vitamin B6
B) Vitamin B1
C) Vitamin B12
D) Vitamin B3
Answer: B
Rationale: Thiamine (B1) deficiency leads to Wernicke encephalopathy,
,classically seen in alcohol use disorder, characterized by confusion,
ataxia, and ophthalmoplegia.
4.
A child presents with barking cough and inspiratory stridor. What is the
most likely diagnosis?
A) Epiglottitis
B) Bronchiolitis
C) Croup
D) Asthma
Answer: C
Rationale: Croup (laryngotracheobronchitis) presents with a barking
cough and inspiratory stridor due to upper airway inflammation,
commonly caused by parainfluenza virus.
5.
Which organism is most commonly responsible for community-acquired
pneumonia in a healthy adult?
A) Klebsiella pneumoniae
B) Streptococcus pneumoniae
, C) Pseudomonas aeruginosa
D) Mycoplasma tuberculosis
Answer: B
Rationale: Streptococcus pneumoniae is the most common cause of
community-acquired pneumonia in otherwise healthy adults.
6.
A patient presents with tremor at rest, bradykinesia, and rigidity. Which
structure is primarily affected?
A) Cerebellum
B) Substantia nigra
C) Hippocampus
D) Thalamus
Answer: B
Rationale: Parkinson disease is caused by degeneration of
dopaminergic neurons in the substantia nigra pars compacta.
7.
Which condition is associated with anti-CCP antibodies?
A) Systemic lupus erythematosus
