ABPS ABPS Diagnostic Testing & Interpretation

Question 1

A patient's ECG shows a delta wave and shortened PR interval. Which condition does this pattern suggest?

Accepted Answer

Wolff-Parkinson-White (WPW) syndrome

Answer

First-degree AV block

Answer

Left bundle branch block

Answer

Atrial fibrillation

Question 2

Which finding on urinalysis is most specific for a urinary tract infection caused by bacteria?

Accepted Answer

Nitrites and leukocyte esterase

Answer

Proteinuria

Answer

Glucosuria

Answer

Hematuria alone

Question 3

A chest X-ray shows a unilateral 'ground-glass opacity' pattern in an immunocompromised patient. Which pathogen should be highest on the differential?

Accepted Answer

Pneumocystis jirovecii (PCP)

Answer

Streptococcus pneumoniae

Answer

Staphylococcus aureus

Answer

Klebsiella pneumoniae

Question 4

Which serum marker is most useful for monitoring the effectiveness of treatment in a patient with hepatocellular carcinoma?

Accepted Answer

AFP (alpha-fetoprotein)

Answer

CEA (carcinoembryonic antigen)

Answer

PSA (prostate-specific antigen)

Answer

CA 19-9

Question 5

An ABG shows pH 7.28, PaCO2 55 mmHg, HCO3 24 mEq/L. How would you classify this acid-base disorder?

Accepted Answer

Respiratory acidosis (uncompensated)

Answer

Metabolic acidosis

Answer

Respiratory alkalosis

Answer

Metabolic alkalosis

Question 6

In interpreting a screening test, which statistical measure describes the probability that a person with a negative test truly does not have the disease?

Accepted Answer

Negative predictive value

Answer

Sensitivity

Answer

Positive predictive value

Answer

Specificity