ATI LPN
ATI LPN Pharmacology Exam I Questions
Extract:
Question 1 of 5
The patient's medication is ordered to be administered TID. Which times will be entered into the patient's medication schedule?
Correct Answer: C
Rationale: Four times (6:00 a.m., noon, 6:00 p.m., midnight) is QID, not TID; TID means three times daily, and this schedule overdoses the patient unnecessarily. Six times daily is every 4 hours, not TID; this exceeds the three-dose requirement, risking toxicity or side effects from excessive administration frequency. 9:00 a.m., 1:00 p.m., 5:00 p.m. is TID; spaced 8 hours apart, it aligns with standard three-times-daily dosing, ensuring consistent therapeutic levels safely. Meal and bedtime timing is vague; without fixed hours, it risks uneven dosing intervals, potentially disrupting pharmacokinetics and efficacy of the medication.
Question 2 of 5
The nurse is to administer the patient's next dose of vancomycin at 9:30 a.m. What time will the nurse draw the patient's blood to check the trough vancomycin level?
Correct Answer: B
Rationale: Drawing at 8:30 a.m., 60 minutes before, is too early; trough levels, taken just before the next dose, reflect minimum concentration, and this timing risks inaccurate results. At 9:00 a.m., 30 minutes before the 9:30 a.m. dose, the trough level accurately measures the lowest vancomycin concentration, ensuring therapeutic monitoring aligns with pharmacokinetics. Drawing at 10:00 a.m., after the dose, measures a post-infusion level, not the trough; this timing misses the minimum concentration critical for dosing adjustments. At 10:30 a.m., well after the dose, blood reflects peak or random levels, not the trough, skewing data needed to assess vancomycin's therapeutic efficacy and safety.
Question 3 of 5
The physician orders Ceclor 175 mg po for an ear infection. After reconstitution, the medication is available as 125 mg/5 mL. How many milliliters will the nurse administer?
Correct Answer: B
Rationale: 5 mL gives 125 mg
Question 4 of 5
When preparing to administer an intradermal injection to an adult, the nurse ensures that the dose amount does not exceed 0.1 mL. A 1 mL tuberculin syringe is used with a 25-gauge needle and is administered at which angle?
Correct Answer: B
Rationale: A 12-degree angle is too shallow, increasing the risk of incorrect placement and ineffective administration of the intradermal injection. The 15-degree angle ensures precise intradermal placement, forming a wheal that indicates proper administration into the dermis for optimal absorption. A 30-degree angle places the medication too deep into subcutaneous tissue, compromising intended drug absorption. A 45-degree angle results in subcutaneous rather than intradermal injection, altering the drug's effectiveness and purpose.
Question 5 of 5
A nurse is administering a dose of insulin to a patient. To practice nursing safely and effectively, the nurse should:
Correct Answer: D
Rationale: Administering insulin at proper timing correlates with mealtimes. However, this alone doesn't ensure safe practice. Confirming the injection site prevents lipodystrophy but does not address dose accuracy, which is vital for safety. Insulin is injected subcutaneously, not in the deltoid muscle. Using incorrect sites disrupts absorption. Double-checking insulin dose prevents administration errors, ensuring compliance with medication safety protocols.