Best NCLEX RN Question Bank Practice Question
The nurse coordinates with the laboratory staff to have the gentamicin trough serum level drawn. At what time should the blood be drawn in relation to the administration of the I.V. dose of gentamicin sulfate [Garamycin]?
Correct Answer: D
Rationale: The trough level, which measures the lowest drug concentration, is drawn just before the next dose to ensure the drug is within a therapeutic range and to avoid toxicity.
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