COMLEX-USA licensing exam Test
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A|
Instant Download Pdf
1.
A 25-year-old male has severe RUQ pain after a fatty meal. Ultrasound shows
gallstones. Embryologic origin of the gallbladder?
A. Foregut
B. Midgut
C. Hepatic diverticulum
D. Hindgut
The gallbladder buds from the hepatic diverticulum (foregut endoderm).
2.
A 3-week-old with projectile, non-bilious vomiting, olive-sized mass. Expected
electrolyte/acid–base?
A. Hyperkalemia
B. Hyponatremia
C. Hypochloremic metabolic alkalosis
D. Hyperchloremic metabolic acidosis
Vomiting HCl → Cl− loss and alkalosis in pyloric stenosis.
3.
Wrist drop after crutch misuse. Injured nerve?
A. Radial nerve
B. Median nerve
,C. Ulnar nerve
D. Axillary nerve
Radial nerve compression in axilla → loss of wrist/finger extension.
4.
Tearing chest pain radiates to back in hypertensive 60-year-old. Diagnosis?
A. Aortic dissection
B. MI
C. PE
D. Pneumothorax
Severe tearing, back radiation = classic dissection.
5.
Defective collagen in classical Ehlers–Danlos?
A. Type I
B. Type V
C. Type II
D. Type III
Classical type most often due to COL5A1/2 (type V).
6.
CF patient with night blindness. Deficient vitamin?
A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin K
Vitamin A is required for rhodopsin; deficiency → nyctalopia.
7.
, Best initial treatment for acute gout attack?
A. Allopurinol
B. Indomethacin
C. Probenecid
D. Febuxostat
NSAIDs are first-line in acute flares; urate-lowering is for prevention.
8.
Boy with hemarthrosis, prolonged PTT, normal PT. Deficient factor?
A. VIII
B. IX
C. VII
D. V
Hemophilia A = factor VIII deficiency.
9.
ACE inhibitor mechanism?
A. ↓ Angiotensin II formation
B. β-blockade
C. Aldosterone receptor inhibition
D. Ca2+ channel blockade
ACEi block conversion of ang I → ang II.
10.
Continuous “machinery” murmur in newborn. Lesion?
A. Patent ductus arteriosus
B. TOF
C. VSD
D. ASD
PDA causes continuous flow murmur.
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A|
Instant Download Pdf
1.
A 25-year-old male has severe RUQ pain after a fatty meal. Ultrasound shows
gallstones. Embryologic origin of the gallbladder?
A. Foregut
B. Midgut
C. Hepatic diverticulum
D. Hindgut
The gallbladder buds from the hepatic diverticulum (foregut endoderm).
2.
A 3-week-old with projectile, non-bilious vomiting, olive-sized mass. Expected
electrolyte/acid–base?
A. Hyperkalemia
B. Hyponatremia
C. Hypochloremic metabolic alkalosis
D. Hyperchloremic metabolic acidosis
Vomiting HCl → Cl− loss and alkalosis in pyloric stenosis.
3.
Wrist drop after crutch misuse. Injured nerve?
A. Radial nerve
B. Median nerve
,C. Ulnar nerve
D. Axillary nerve
Radial nerve compression in axilla → loss of wrist/finger extension.
4.
Tearing chest pain radiates to back in hypertensive 60-year-old. Diagnosis?
A. Aortic dissection
B. MI
C. PE
D. Pneumothorax
Severe tearing, back radiation = classic dissection.
5.
Defective collagen in classical Ehlers–Danlos?
A. Type I
B. Type V
C. Type II
D. Type III
Classical type most often due to COL5A1/2 (type V).
6.
CF patient with night blindness. Deficient vitamin?
A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin K
Vitamin A is required for rhodopsin; deficiency → nyctalopia.
7.
, Best initial treatment for acute gout attack?
A. Allopurinol
B. Indomethacin
C. Probenecid
D. Febuxostat
NSAIDs are first-line in acute flares; urate-lowering is for prevention.
8.
Boy with hemarthrosis, prolonged PTT, normal PT. Deficient factor?
A. VIII
B. IX
C. VII
D. V
Hemophilia A = factor VIII deficiency.
9.
ACE inhibitor mechanism?
A. ↓ Angiotensin II formation
B. β-blockade
C. Aldosterone receptor inhibition
D. Ca2+ channel blockade
ACEi block conversion of ang I → ang II.
10.
Continuous “machinery” murmur in newborn. Lesion?
A. Patent ductus arteriosus
B. TOF
C. VSD
D. ASD
PDA causes continuous flow murmur.
