A client is receiving IV vancomycin and the nurse plans to draw blood for a peak and trough to determine the serum level of the medication. Which collection times provide the best determination of these levels?
Immediately after completion of the IV dose and 30 minutes 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.
Two hours after completion of the IV dose and two hours 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.
The Correct Answer is A
A. Immediately after completion of the IV dose and 30 minutes before the next administration of the medication: This timing is correct for monitoring vancomycin levels. The peak level is typically measured immediately after the completion of the infusion (though peak levels are less commonly required for vancomycin), and the trough level is measured just before the next dose is due, 30 minutes before administration. This approach helps in evaluating the medication's efficacy and safety.
B. One hour after completion of the IV dose and one hour before the next administration of the medication: This timing is not ideal. The peak level for vancomycin is usually measured immediately after the dose rather than one hour later. Trough levels are measured closer to the next dose, typically 30 minutes before the next dose.
C. Two hours after completion of the IV dose and two hours before the next administration of the medication: Measuring levels two hours after the dose completion is too late for a peak level. The trough level should be measured closer to the next dose, generally 30 minutes before the next administration.
D. Thirty minutes into the administration of the IV dose and 30 minutes before the next administration of the medication: Measuring the level 30 minutes into the infusion is not appropriate for peak levels, which are typically measured.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. I should use this medication in its hand inhaler every day.: Tiotropium is a long-acting anticholinergic medication used for managing COPD, and it should be used daily, even if symptoms are not present. This statement indicates that the client understands the need for consistent daily use of the medication to manage COPD effectively.
B. When I cough up sputum, the secretions should be less thick.: Tiotropium is not specifically aimed at changing the thickness of sputum. It primarily works to open the airways, so while it may help with overall symptoms, it doesn't directly affect sputum viscosity.
C. I will use my other inhaler in between uses.: Tiotropium is usually prescribed for regular use as part of a long-term management plan, and the client may have other inhalers for different purposes (e.g., rescue inhalers for acute symptoms). However, the statement about using another inhaler in between uses may not be specific to the proper use of tiotropium itself.
D. If I have sudden shortness of breath, I will use this inhaler.: Tiotropium is a long-acting inhaled medication meant for maintenance therapy and is not intended for immediate relief of acute symptoms. For sudden shortness of breath, a rescue inhaler (usually containing a short-acting bronchodilator) would be more appropriate.
Correct Answer is A
Explanation
A. Phosphate: Calcium acetate is used primarily to manage hyperphosphatemia in patients with chronic kidney disease (CKD). It works by binding to dietary phosphate in the gut, preventing its absorption, which helps lower phosphate levels in the blood. A decrease in phosphate levels indicates that the calcium acetate is effectively controlling phosphate levels.
B. pH: While maintaining normal pH levels is important in CKD, calcium acetate does not directly affect blood pH. The primary role of calcium acetate is to manage phosphate levels rather than pH balance.
C. Calcium: Calcium acetate is a phosphate binder and does not primarily target calcium levels. It can influence calcium levels indirectly, but a decrease in calcium is not the direct measure of the medication's effectiveness. Instead, monitoring phosphate levels is more indicative of the medication’s effectiveness.
D. Potassium: Calcium acetate does not have a direct effect on potassium levels. It is specifically used to manage phosphate levels in CKD patients. Changes in potassium levels would not indicate the effectiveness of calcium acetate.
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