Prometric exam questions with answers

Answer: D. 20 mL/h

The concentration is 25,000 units / 500 mL = 50 units/mL, so 1,000 units/h divided by 50 units/mL = 20 mL/h. A rate of 40 mL/h would come from mistakenly dividing 1,000 by 25 (using the thousands of units without the volume), doubling the dose of a high-alert anticoagulant.

Answer: C. Abdominal ultrasound

The features suggest intussusception, and ultrasound is the first-line investigation, showing a target or doughnut sign with high sensitivity and no radiation; air or contrast enema can then reduce it if the child is stable. CT is not needed for diagnosis and adds radiation and delay, and a barium meal assesses the upper GI tract rather than the ileocolic region.

Answer: B. To prevent the tablet dissolving in the acidic stomach

Enteric coatings are polymers that resist gastric acid and dissolve at the higher pH of the small intestine, protecting acid-labile drugs or protecting the stomach from irritant drugs. Crushing destroys this protection. Prolonged release over 24 hours is the function of modified-release formulations, a different technology.

Answer: B. Mandibular first molars

The mandibular first permanent molars and mandibular central incisors usually erupt first, at about 6-7 years, marking the start of the mixed dentition. Maxillary central incisors typically erupt slightly later, at around 7-8 years, and canines and premolars erupt between about 10 and 12 years.

Answer: A. Mediolateral oblique (MLO)

The MLO is angled parallel to the pectoralis major, so it includes the most breast tissue, particularly the upper outer quadrant and axillary tail, and should show the pectoral muscle to nipple level. The CC view complements it by showing medial tissue well, but it can miss posterior lateral tissue. The XCCL is a supplementary view, not a standard screening projection.