A client is receiving intravenous (IV) vancomycin and the nurse plans to draw blood for a peak and trough to determine the serum level of the drug. Which collection times provide the best determination of these levels?
Two hours after completion of the IV dose and two hours before the next administration of the medication.
One hour after completion of the IV dose and one hour before the next administration of the medication.
Thirty minutes into the administration of the IV dose and 30 minutes before the next administration of the medication.
Immediately after completion of the IV dose and 30 minutes before the next administration of the medication.
None
None
The Correct Answer is D
A. Two hours after completion is too late to accurately capture the peak serum concentration, and drawing a trough two hours before the next dose will result in an artificially elevated trough level, as the drug has not yet cleared to its lowest concentration.
B. One hour after completion may miss the true peak concentration for intravenous vancomycin, and drawing a trough one hour before the next dose does not represent the absolute lowest point of the medication's therapeutic window.
C. Thirty minutes into the infusion is too early to measure a peak because the entire dose has not yet been delivered into the bloodstream, which can lead to inaccurate clinical decision-making.
D. To capture the maximum concentration of the drug in the bloodstream, the peak level should be drawn immediately after completion of the intravenous infusion (or within 30 to 60 minutes depending on facility protocol and infusion duration). To capture the lowest concentration, the trough level must be drawn immediately prior to the next scheduled dose, typically 30 minutes before administration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
No explanation
Correct Answer is B
Explanation
Choice A rationale: Tetracycline should generally be taken on an empty stomach, as certain food and beverages, including orange juice, can interfere with its absorption. The nurse should instruct the client to take tetracycline with water and on an empty stomach unless otherwise specified by the healthcare provider.
Choice B rationale: Tetracycline is an antibiotic that can make the skin more sensitive to sunlight, leading to an increased risk of sunburn and photosensitivity reactions. To prevent these adverse effects, the nurse should instruct the client to protect their skin from sunlight while taking the medication. This includes using sunscreen, wearing protective clothing, and avoiding prolonged sun exposure. It is essential to educate the client about this potential side effect to ensure their safety and minimize skin reactions during treatment.
Choice C rationale: Tetracycline does not require routine monitoring of serum drug levels. It is an antibiotic with a well-established dosing regimen, and monitoring drug levels is not necessary for its safe and effective use.
Choice D rationale: While taking tetracycline with milk or antacids may help reduce GI irritation, it can also interfere with the absorption of the medication. Therefore, it is generally recommended to take tetracycline with water and on an empty stomach to ensure optimal absorption and effectiveness.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.