Nokea
Fasting for an extended period can:
- A. Increase drug absorption due to lack of competition between food and the drug
- B. Alter the pH of the gastrointestinal tract, affecting absorption
- C. Cause vasoconstriction, leading to decreased drug absorption
- D. Shrink the stomach, causing decreased surface area for drug absorption
Correct Answer: A
Rationale: Fasting increases absorption of some drugs by eliminating food-related delays in gastric emptying and competition for absorption.
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Probiotics are recommended to be co-administered when are prescribed:
- A. Antacids
- B. Antihypertensives
- C. Antidiarrheals
- D. Antibiotics
Correct Answer: D
Rationale: Probiotics help restore gut flora disrupted by antibiotics.
Which of the following is the indication for glucocorticoid prescribing?
- A. Cataract
- B. Prevention of respiratory distress
- C. Hypofunction of thyroid gland
- D. Hypocalcemia
Correct Answer: B
Rationale: Glucocorticoids prevent respiratory distress, such as in neonatal respiratory distress syndrome.
Because of the pattern of cholesterol synthesis, reductase inhibitors are given:
- A. In the evening in a single daily dose
- B. Twice daily in the morning and the evening
- C. With each meal and at bedtime
- D. In the morning before eating
Correct Answer: A
Rationale: Cholesterol synthesis peaks at night, so evening dosing optimizes reductase inhibitor efficacy.
You need to infuse 1,200 mL of a medication over 6 hours with a drop factor of 10 gtt/mL. Calculate the flow rate in drops per minute.
- A. 30 gtt/min
- B. 33 gtt/min
- C. 40 gtt/min
- D. 50 gtt/min
Correct Answer: B
Rationale: Flow rate = (1,200 mL 10 gtt/mL) ÷ (6 60) = 12,000 ÷ 360 = 33.33 gtt/min, rounded to 33 gtt/min (same as Q4).
Plasma concentration of drug at time 0 is 96(g/ml). If t½ is 2 hours concentration in plasma at 10 hours will be
- A. 48
- B. 24
- C. 12
- D. 3
Correct Answer: D
Rationale: In first-order kinetics, the concentration halves every half-life (t½ = 2 hours). At 10 hours (5 half-lives), 96 → 48 → 24 → 12 → 6 → 3 µg/ml.