A teenager was brought into the emergency room following a lorazepam overdose. What antidote would the nurse expect to administer?

The half-life of a medication is the time it takes for the concentration of the medication in the body to decrease by half. In this case, the medication has a half-life of 2 hours and a current toxic level of 40 mEq/dL. After 2 hours, the level will decrease to 20 mEq/dL. After another 2 hours (4 hours total), the level will decrease to 10 mEq/dL, which is within the normal range. However, it will take another 21 half-lives (42 hours) for the level to reach 5 mEq/dL, which is the lower end of the normal range. Therefore, it will take a total of 25 hours (4 + 21) for the medication to reach the normal range.
Option B is incorrect because it would take much longer than 24 hours for the medication to reach the normal range.
Option C is incorrect because it would only take 2 hours for the medication to decrease by half, not reach the normal range.
Option D is incorrect because it would take longer than 4 hours for the medication to reach the normal range.

The order states that morphine 1 mg should be given intravenously (IV) every 2 hours as needed for pain. This means that the nurse should assess the client's pain level every 2 hours and determine if 1 mg of morphine IV is needed to manage the pain.
Option A is incorrect because the order specifies that morphine should be given every 2 hours as needed, not every hour.
Option B is incorrect because the order specifies that morphine should be given intravenously (IV), not enterally.
Option D is incorrect because the order specifies that morphine should be given as needed for pain, not automatically every 2 hours.