COMSAE Exam Strategy Simulation Test
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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Question 1
A 24-year-old presents with fever, flank pain, and dysuria. Which
organism is the most likely cause of acute pyelonephritis?
A. Staphylococcus aureus
B. Escherichia coli
C. Enterococcus faecalis
D. Pseudomonas aeruginosa
Answer: B. Escherichia coli
Rationale: Escherichia coli is the most common cause of acute
uncomplicated pyelonephritis due to its presence in the gut flora and
ability to ascend the urinary tract.
Question 2
Which nerve is most likely injured in a mid-shaft humeral fracture?
,A. Median nerve
B. Radial nerve
C. Ulnar nerve
D. Axillary nerve
Answer: B. Radial nerve
Rationale: The radial nerve runs in the spiral groove of the humerus
and is most vulnerable in mid-shaft fractures.
Question 3
A patient has a murmur that increases with inspiration. Which condition
is most likely?
A. Mitral regurgitation
B. Aortic stenosis
C. Tricuspid regurgitation
D. Pulmonic stenosis
Answer: C. Tricuspid regurgitation
Rationale: Right-sided murmurs increase with inspiration due to
increased venous return to the right heart.
,Question 4
Which vitamin deficiency is associated with Wernicke encephalopathy?
A. Vitamin B1
B. Vitamin B6
C. Vitamin B12
D. Vitamin C
Answer: A. Vitamin B1
Rationale: Thiamine deficiency leads to Wernicke encephalopathy,
commonly seen in chronic alcoholism.
Question 5
Which structure is primarily responsible for filtering blood in the
kidney?
A. Proximal tubule
B. Loop of Henle
C. Glomerulus
D. Distal tubule
Answer: C. Glomerulus
Rationale: The glomerulus performs ultrafiltration of plasma to form
the initial filtrate.
, Question 6
Which organism is most associated with peptic ulcers?
A. Helicobacter pylori
B. Clostridium difficile
C. Salmonella typhi
D. Shigella dysenteriae
Answer: A. Helicobacter pylori
Rationale: H. pylori infection damages gastric mucosa and is a major
cause of peptic ulcer disease.
Question 7
Which ECG finding is most consistent with hyperkalemia?
A. U waves
B. Peaked T waves
C. ST elevation
D. Short PR interval
Answer: B. Peaked T waves
Rationale: Hyperkalemia causes tall, peaked T waves due to altered
cardiac repolarization.
Questions With Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
Question 1
A 24-year-old presents with fever, flank pain, and dysuria. Which
organism is the most likely cause of acute pyelonephritis?
A. Staphylococcus aureus
B. Escherichia coli
C. Enterococcus faecalis
D. Pseudomonas aeruginosa
Answer: B. Escherichia coli
Rationale: Escherichia coli is the most common cause of acute
uncomplicated pyelonephritis due to its presence in the gut flora and
ability to ascend the urinary tract.
Question 2
Which nerve is most likely injured in a mid-shaft humeral fracture?
,A. Median nerve
B. Radial nerve
C. Ulnar nerve
D. Axillary nerve
Answer: B. Radial nerve
Rationale: The radial nerve runs in the spiral groove of the humerus
and is most vulnerable in mid-shaft fractures.
Question 3
A patient has a murmur that increases with inspiration. Which condition
is most likely?
A. Mitral regurgitation
B. Aortic stenosis
C. Tricuspid regurgitation
D. Pulmonic stenosis
Answer: C. Tricuspid regurgitation
Rationale: Right-sided murmurs increase with inspiration due to
increased venous return to the right heart.
,Question 4
Which vitamin deficiency is associated with Wernicke encephalopathy?
A. Vitamin B1
B. Vitamin B6
C. Vitamin B12
D. Vitamin C
Answer: A. Vitamin B1
Rationale: Thiamine deficiency leads to Wernicke encephalopathy,
commonly seen in chronic alcoholism.
Question 5
Which structure is primarily responsible for filtering blood in the
kidney?
A. Proximal tubule
B. Loop of Henle
C. Glomerulus
D. Distal tubule
Answer: C. Glomerulus
Rationale: The glomerulus performs ultrafiltration of plasma to form
the initial filtrate.
, Question 6
Which organism is most associated with peptic ulcers?
A. Helicobacter pylori
B. Clostridium difficile
C. Salmonella typhi
D. Shigella dysenteriae
Answer: A. Helicobacter pylori
Rationale: H. pylori infection damages gastric mucosa and is a major
cause of peptic ulcer disease.
Question 7
Which ECG finding is most consistent with hyperkalemia?
A. U waves
B. Peaked T waves
C. ST elevation
D. Short PR interval
Answer: B. Peaked T waves
Rationale: Hyperkalemia causes tall, peaked T waves due to altered
cardiac repolarization.
