A female client calls the clinic for advice after forgetting to take her morning dose of twice-daily lithium 5 hours ago. Which instructions should the nurse give the client?
a. Take the dose immediately, and then take the second dose 3 hours late.
b. Take half of a dose now, and then take the second dose at the normal time.
c. Eliminate the dose missed, and take the second dose at the normal time.
d. Immediately take the missed dose, and take the second dose at the normal time.
C
Because lithium should be taken at the same time each day and the therapeutic range is narrow, 5 hours after the first dose was missed would be too close to take the second dose. The client should not to try to make up the first missed dose. Altering the schedule for one missed dose could cause more problems with future doses.
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