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Home Q & A Board Biology-Related Homework Help Medicine
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normita2 normita2
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6 years ago
A prescriber has written an order for a medication: drug X 100 mg PO every 6 hours. The half-life for the drug is approximately 6 hours. The nurse is preparing to administer the first dose at 8:00 AM on Tuesday.
 
  On Wednesday, when will the serum drug level reach plateau?
  a. 2:00 AM
  b. 8:00 AM
  c. 2:00 PM
  d. 8:00 PM
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#1
6 years ago
ANS: B
It takes four half-lives for a drug to reach plateau. Total body stores reach their peak at the beginning of the fifth dose of a drug if all doses are equal in amount; in this case, this will be at 8:00 AM the following day.
normita2 Author
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#2
6 years ago
Bravo this is awesome
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