ATI LPN
ATI LPN Pharmacology Quiz Questions
Extract:
Question 1 of 5
Which term is used to describe the stain of bacteria?
Correct Answer: B
Rationale: Gram-positive describes bacteria retaining crystal violet in Gram staining, indicating cell wall structure. Aerobic refers to oxygen needs, cocci to shape, and Bacillus to a genus, not staining.
Question 2 of 5
Children younger than 9 years should not be given tetracyclines because:
Correct Answer: D
Rationale: Tetracyclines deposit in developing teeth, causing permanent discoloration in children under 9. They can also affect bone growth, but tooth discoloration is the primary concern. Dehydration and photosensitivity are not age-specific tetracycline issues.
Question 3 of 5
Jennifer takes birth control pills. Recently she was diagnosed with a urinary tract infection and is taking ciprofloxacin (Cipro). To maximize the therapeutic effects of both types of drugs, what should the nurse tell Jennifer?
Correct Answer: C
Rationale: Ciprofloxacin may reduce birth control pill effectiveness, risking pregnancy. Completing the antibiotic therapy with a backup contraception method ensures infection treatment and pregnancy prevention. Changing drugs or abstaining is less practical.
Question 4 of 5
Why must the nurse instruct a patient receiving metformin (Glucophage XL) to avoid crushing or chewing the medication?
Correct Answer: D
Rationale: Glucophage XL is an extended-release formulation designed for slow metformin release. Crushing or chewing disrupts this, causing rapid drug release, which can increase side effects like hypoglycemia or GI distress, altering the intended effect.
Question 5 of 5
A nurse is preparing to administer haloperidol 5 mg IM to a client. Available is haloperidol 50 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 0.1
Rationale:
To calculate the volume of haloperidol to administer, use the formula: Volume (mL) = Dose (mg) ÷ Concentration (mg/mL). Given a dose of 5 mg and a concentration of 50 mg/mL, Volume = 5 ÷ 50 = 0.1 mL. The answer is rounded to the nearest tenth as instructed.