If a patient is receiving divided doses of tobramycin, what time should a blood sample be obtained for determination of a trough level of the drug, which is to be administered at 1000?
a. 1130
b. 0945
c. 1200
d. 1030
ANS: B
Samples for trough levels should be drawn just prior to the next dose (when divided daily doses are used) or 1 hour before the next dose (when a single daily dose is used).
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