ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
A nurse is preparing to administer lithium 300 mg PO to a client who has bipolar disorder. Available is lithium 150 mg capsules. How many capsules should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: D
Rationale: Capsules = 300 mg / 150 mg/capsule = 2 capsules.
Question 2 of 5
Which of the following is stated correctly using metric abbreviations and rules?
Correct Answer: A
Rationale: Ampicillin 500 mg uses correct lowercase 'mg' and no trailing zero.
Question 3 of 5
A nurse is preparing to administer lithium 300 mg PO to a client who has bipolar disorder. Available is lithium 150 mg capsules. How many capsules should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: D
Rationale: Capsules = 300 mg / 150 mg/capsule = 2 capsules.
Question 4 of 5
Order: lidocaine 2 g in 250 mL of D5W at 30 mL/h What is the flow rate?
Correct Answer: B
Rationale: Flow rate is specified as 30 mL/hr in the order.
Question 5 of 5
A nurse is preparing to administer phenobarbital 6 mg/kg/day PO divided in equal doses every 12 hr to a client who weighs 44 lbs. Available is phenobarbital elixir 20 mg/5ml. The nurse should administer how many mL per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use trailing zeros.
Correct Answer: B
Rationale: Weight = 44 lb × 0.453592 = 19.96 kg. Daily dose = 6 mg/kg/day × 19.96 kg = 119.76 mg. Per dose = 119.76 / 2 = 59.88 mg. Volume = 59.88 × (5 mL / 20 mg) = 14.97 mL, rounded to 15 mL.