PTCB Drug Test #4 2 — Questions and Answers
Question 1: How many grams of dextrose are in 1 liter of D5W?
- 25 g
- 100 g
- 50 g (Correct answer)
- 10 g
Correct answer: 50 g
D5W contains 5% dextrose = 5 g/100 mL. In 1000 mL (1 liter): 5 g x 10 = 50 g of dextrose.
Question 2: A child weighs 44 lbs. The dosing is 10 mg/kg. What is the appropriate dose in mg?
- 440 mg
- 200 mg (Correct answer)
- 440 mg
- 100 mg
Correct answer: 200 mg
44 lbs ÷ 2.2 = 20 kg. Dose = 20 kg x 10 mg/kg = 200 mg.
Question 3: Which of the following drug suffixes indicates it belongs to the beta-blocker class?
- -pril
- -sartan
- -olol (Correct answer)
- -statin
Correct answer: -olol
Beta-blockers typically end in "-olol" (metoprolol, atenolol, propranolol, carvedilol). "-pril" = ACE inhibitors, "-sartan" = ARBs, "-statin" = HMG-CoA reductase inhibitors.
Question 4: What is the maximum recommended daily dose of acetaminophen for a healthy adult?
- 2,000 mg
- 8,000 mg
- 6,000 mg
- 4,000 mg (Correct answer)
Correct answer: 4,000 mg
The maximum daily dose of acetaminophen for healthy adults is 4,000 mg (4 g). For patients with liver disease, alcoholism, or malnutrition, 2,000–3,000 mg/day is recommended.
Question 5: Which of the following is the correct meaning of "QID" on a prescription?
- Every other day
- Every 4 hours
- Four times daily (Correct answer)
- Once daily
Correct answer: Four times daily
QID (quater in die) means four times a day. QD = once daily, BID = twice daily, TID = three times daily.
Question 6: Methotrexate is used for which of the following conditions?
- Diabetes mellitus
- Hypothyroidism
- Rheumatoid arthritis (Correct answer)
- Hypertension
Correct answer: Rheumatoid arthritis
Methotrexate is a DMARD used for rheumatoid arthritis, psoriasis, and certain cancers. It inhibits dihydrofolate reductase, reducing folic acid synthesis.
PTCB Drug Test #4 2
How many grams of dextrose are in 1 liter of D5W?