NCCAOM Biomedicine Exam Predictor | Most Frequently
Tested QUESTIONs, Verified Answers & Complete
Explanations 2026/2027
QUESTION 1
Which sign or symptom is most characteristic of left-sided heart failure
compared to right-sided heart failure?
• A. Peripheral pitting edema and jugular venous distension
• B. Exertional dyspnea, orthopnea, and paroxysmal nocturnal
dyspnea
• C. Ascites and tender hepatomegaly
• D. Chronic productive cough with copious foul-smelling sputum
Correct Answer: B. Exertional dyspnea, orthopnea, and paroxysmal
nocturnal dyspnea
Detailed Rationale: Left-sided heart failure causes pulmonary
congestion and fluid backup into the lungs, leading to respiratory
symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea,
whereas right-sided failure causes systemic venous congestion.
QUESTION 2
Which laboratory finding is classically diagnostic of diabetic ketoacidosis
(DKA)?
• A. Hypoglycemia, normal serum bicarbonate, and negative serum
ketones
, • B. Hyperglycemia, high anion gap metabolic acidosis, and
ketonemia/ketonuria
• C. Severe hypercalcemia and elevated alkaline phosphatase
• D. Hyperchloremic metabolic alkalosis with normal glucose
Correct Answer: B. Hyperglycemia, high anion gap metabolic acidosis,
and ketonemia/ketonuria
Detailed Rationale: DKA is characterized by the triad of uncontrolled
hyperglycemia, metabolic acidosis with an increased anion gap, and
increased body stores of ketone bodies.
QUESTION 3
A patient presents with acute onset of unilateral paralysis of the entire
face, including the inability to wrinkle the forehead and close the eye,
indicating:
• A. Upper motor neuron lesion (stroke)
• B. Lower motor neuron lesion (Bell's palsy / Facial nerve paralysis)
• C. Trigeminal neuralgia
• D. Horner syndrome
Correct Answer: B. Lower motor neuron lesion (Bell's palsy / Facial
nerve paralysis)
Detailed Rationale: Bell's palsy involves a peripheral lesion of cranial
nerve VII (LMN), which affects both the upper and lower face on the
ipsilateral side, sparing forehead wrinkling in central (UMN) lesions.
QUESTION 4
,Which specialized orthopedic test is used to assess for a full-thickness
tear of the rotator cuff, specifically evaluating the supraspinatus muscle
when the patient fails to lower the arm slowly from abduction?
• A. Drop arm test
• B. Neer test
• C. Speed's test
• D. Apprehension test
Correct Answer: A. Drop arm test
Detailed Rationale: The drop arm test requires the patient to slowly
lower their arm from 90 degrees of abduction; a sudden drop or severe
pain indicates a rotator cuff tear (supraspinatus).
QUESTION 5
In interpreting viral hepatitis serology, the presence of Hepatitis B
surface antigen (HBsAg) for greater than 6 months indicates:
• A. Complete resolution and immunity
• B. Chronic Hepatitis B infection
• C. Acute infection window period
• D. Successful vaccination status
Correct Answer: B. Chronic Hepatitis B infection
Detailed Rationale: HBsAg is the primary marker of active Hepatitis B
infection; persistence beyond 6 months defines chronic infection status.
QUESTION 6
, Which medication class is known to cause a persistent dry, hacking
cough and angioedema as prominent adverse effects?
• A. Beta-blockers
• B. Calcium channel blockers
• C. Angiotensin-converting enzyme (ACE) inhibitors
• D. Thiazide diuretics
Correct Answer: C. Angiotensin-converting enzyme (ACE) inhibitors
Detailed Rationale: ACE inhibitors block the breakdown of bradykinin,
leading to its accumulation in the respiratory tract, which triggers a
chronic dry cough and potential angioedema.
QUESTION 7
A patient of childbearing age presenting with acute lower abdominal
pain, abnormal vaginal bleeding, and hemodynamic instability must be
evaluated immediately for which life-threatening medical emergency?
• A. Acute appendicitis
• B. Ectopic pregnancy
• C. Pelvic inflammatory disease
• D. Ovarian torsion
Correct Answer: B. Ectopic pregnancy
Detailed Rationale: Ectopic pregnancy is a surgical emergency
characterized by lower quadrant pain and bleeding, carrying a high risk
of rupture and fatal internal hemorrhage.
QUESTION 8
Tested QUESTIONs, Verified Answers & Complete
Explanations 2026/2027
QUESTION 1
Which sign or symptom is most characteristic of left-sided heart failure
compared to right-sided heart failure?
• A. Peripheral pitting edema and jugular venous distension
• B. Exertional dyspnea, orthopnea, and paroxysmal nocturnal
dyspnea
• C. Ascites and tender hepatomegaly
• D. Chronic productive cough with copious foul-smelling sputum
Correct Answer: B. Exertional dyspnea, orthopnea, and paroxysmal
nocturnal dyspnea
Detailed Rationale: Left-sided heart failure causes pulmonary
congestion and fluid backup into the lungs, leading to respiratory
symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea,
whereas right-sided failure causes systemic venous congestion.
QUESTION 2
Which laboratory finding is classically diagnostic of diabetic ketoacidosis
(DKA)?
• A. Hypoglycemia, normal serum bicarbonate, and negative serum
ketones
, • B. Hyperglycemia, high anion gap metabolic acidosis, and
ketonemia/ketonuria
• C. Severe hypercalcemia and elevated alkaline phosphatase
• D. Hyperchloremic metabolic alkalosis with normal glucose
Correct Answer: B. Hyperglycemia, high anion gap metabolic acidosis,
and ketonemia/ketonuria
Detailed Rationale: DKA is characterized by the triad of uncontrolled
hyperglycemia, metabolic acidosis with an increased anion gap, and
increased body stores of ketone bodies.
QUESTION 3
A patient presents with acute onset of unilateral paralysis of the entire
face, including the inability to wrinkle the forehead and close the eye,
indicating:
• A. Upper motor neuron lesion (stroke)
• B. Lower motor neuron lesion (Bell's palsy / Facial nerve paralysis)
• C. Trigeminal neuralgia
• D. Horner syndrome
Correct Answer: B. Lower motor neuron lesion (Bell's palsy / Facial
nerve paralysis)
Detailed Rationale: Bell's palsy involves a peripheral lesion of cranial
nerve VII (LMN), which affects both the upper and lower face on the
ipsilateral side, sparing forehead wrinkling in central (UMN) lesions.
QUESTION 4
,Which specialized orthopedic test is used to assess for a full-thickness
tear of the rotator cuff, specifically evaluating the supraspinatus muscle
when the patient fails to lower the arm slowly from abduction?
• A. Drop arm test
• B. Neer test
• C. Speed's test
• D. Apprehension test
Correct Answer: A. Drop arm test
Detailed Rationale: The drop arm test requires the patient to slowly
lower their arm from 90 degrees of abduction; a sudden drop or severe
pain indicates a rotator cuff tear (supraspinatus).
QUESTION 5
In interpreting viral hepatitis serology, the presence of Hepatitis B
surface antigen (HBsAg) for greater than 6 months indicates:
• A. Complete resolution and immunity
• B. Chronic Hepatitis B infection
• C. Acute infection window period
• D. Successful vaccination status
Correct Answer: B. Chronic Hepatitis B infection
Detailed Rationale: HBsAg is the primary marker of active Hepatitis B
infection; persistence beyond 6 months defines chronic infection status.
QUESTION 6
, Which medication class is known to cause a persistent dry, hacking
cough and angioedema as prominent adverse effects?
• A. Beta-blockers
• B. Calcium channel blockers
• C. Angiotensin-converting enzyme (ACE) inhibitors
• D. Thiazide diuretics
Correct Answer: C. Angiotensin-converting enzyme (ACE) inhibitors
Detailed Rationale: ACE inhibitors block the breakdown of bradykinin,
leading to its accumulation in the respiratory tract, which triggers a
chronic dry cough and potential angioedema.
QUESTION 7
A patient of childbearing age presenting with acute lower abdominal
pain, abnormal vaginal bleeding, and hemodynamic instability must be
evaluated immediately for which life-threatening medical emergency?
• A. Acute appendicitis
• B. Ectopic pregnancy
• C. Pelvic inflammatory disease
• D. Ovarian torsion
Correct Answer: B. Ectopic pregnancy
Detailed Rationale: Ectopic pregnancy is a surgical emergency
characterized by lower quadrant pain and bleeding, carrying a high risk
of rupture and fatal internal hemorrhage.
QUESTION 8
