COMSAE Weak Area Diagnostic Report Exam
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. A 65-year-old man presents with exertional chest pain relieved by
rest. Which is the most likely underlying mechanism of stable
angina?
A. Coronary artery thrombosis
B. Coronary vasospasm
C. Atherosclerotic plaque causing fixed stenosis
D. Myocarditis
Answer: C
Rationale: Stable angina is most commonly caused by a fixed
atherosclerotic plaque that limits coronary blood flow during
increased oxygen demand. The stenosis is predictable and does
not fully occlude the vessel at rest.
,2. A patient with COPD has chronic CO₂ retention. What is the
primary renal compensation?
A. Decreased bicarbonate reabsorption
B. Increased bicarbonate retention
C. Decreased hydrogen ion secretion
D. Increased chloride reabsorption
Answer: B
Rationale: In chronic respiratory acidosis, the kidneys
compensate by increasing bicarbonate reabsorption and
generating new bicarbonate to buffer excess CO₂-derived acid.
3. Which organism is most commonly associated with peptic ulcers
in the stomach?
A. Helicobacter pylori
B. Streptococcus pyogenes
C. Clostridium difficile
D. Escherichia coli
Answer: A
Rationale: Helicobacter pylori infection disrupts gastric mucosal
defenses and increases acid secretion, leading to gastritis and
peptic ulcer disease.
,4. A 23-year-old woman has fever, dysuria, and flank pain. Most
likely diagnosis?
A. Cystitis
B. Pyelonephritis
C. Glomerulonephritis
D. Nephrotic syndrome
Answer: B
Rationale: Flank pain with fever and urinary symptoms suggests
ascending infection to the kidney, consistent with pyelonephritis.
5. Which electrolyte abnormality is most associated with digoxin
toxicity?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Answer: B
Rationale: Hypokalemia increases digoxin binding to Na⁺/K⁺
ATPase, increasing the risk of toxicity.
, 6. A child presents with barking cough and inspiratory stridor. Most
likely pathogen?
A. RSV
B. Parainfluenza virus
C. Influenza virus
D. Adenovirus
Answer: B
Rationale: Parainfluenza virus is the most common cause of
croup, characterized by subglottic swelling leading to stridor and
barking cough.
7. Which condition is characterized by antibodies against
acetylcholine receptors?
A. Lambert-Eaton syndrome
B. Myasthenia gravis
C. Multiple sclerosis
D. ALS
Answer: B
Rationale: Myasthenia gravis involves autoimmune destruction
of postsynaptic acetylcholine receptors at the neuromuscular
junction.
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. A 65-year-old man presents with exertional chest pain relieved by
rest. Which is the most likely underlying mechanism of stable
angina?
A. Coronary artery thrombosis
B. Coronary vasospasm
C. Atherosclerotic plaque causing fixed stenosis
D. Myocarditis
Answer: C
Rationale: Stable angina is most commonly caused by a fixed
atherosclerotic plaque that limits coronary blood flow during
increased oxygen demand. The stenosis is predictable and does
not fully occlude the vessel at rest.
,2. A patient with COPD has chronic CO₂ retention. What is the
primary renal compensation?
A. Decreased bicarbonate reabsorption
B. Increased bicarbonate retention
C. Decreased hydrogen ion secretion
D. Increased chloride reabsorption
Answer: B
Rationale: In chronic respiratory acidosis, the kidneys
compensate by increasing bicarbonate reabsorption and
generating new bicarbonate to buffer excess CO₂-derived acid.
3. Which organism is most commonly associated with peptic ulcers
in the stomach?
A. Helicobacter pylori
B. Streptococcus pyogenes
C. Clostridium difficile
D. Escherichia coli
Answer: A
Rationale: Helicobacter pylori infection disrupts gastric mucosal
defenses and increases acid secretion, leading to gastritis and
peptic ulcer disease.
,4. A 23-year-old woman has fever, dysuria, and flank pain. Most
likely diagnosis?
A. Cystitis
B. Pyelonephritis
C. Glomerulonephritis
D. Nephrotic syndrome
Answer: B
Rationale: Flank pain with fever and urinary symptoms suggests
ascending infection to the kidney, consistent with pyelonephritis.
5. Which electrolyte abnormality is most associated with digoxin
toxicity?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Answer: B
Rationale: Hypokalemia increases digoxin binding to Na⁺/K⁺
ATPase, increasing the risk of toxicity.
, 6. A child presents with barking cough and inspiratory stridor. Most
likely pathogen?
A. RSV
B. Parainfluenza virus
C. Influenza virus
D. Adenovirus
Answer: B
Rationale: Parainfluenza virus is the most common cause of
croup, characterized by subglottic swelling leading to stridor and
barking cough.
7. Which condition is characterized by antibodies against
acetylcholine receptors?
A. Lambert-Eaton syndrome
B. Myasthenia gravis
C. Multiple sclerosis
D. ALS
Answer: B
Rationale: Myasthenia gravis involves autoimmune destruction
of postsynaptic acetylcholine receptors at the neuromuscular
junction.
