A nurse is assessing an adult client who is receiving morphine via continuous IV infusion. The nurse should identify that which of the following is the priority finding?

A) "Discard expired medication down the toilet":
Incorrect. Flushing medications down the toilet can lead to contamination of water supplies and harm the environment. This method is not recommended except for certain medications that specifically instruct this disposal method.

B) "Pour expired medication tablets into a waste basket":
Incorrect. Disposing of medication in a waste basket can pose risks of accidental ingestion by children, pets, or wildlife, and it does not prevent the potential misuse of medications.

C) "Return expired medication to the pharmacist":
Correct. Returning expired medications to the pharmacist is the safest and most environmentally friendly option. Pharmacists can ensure the medications are disposed of properly according to local regulations, which may include methods like incineration or using drug take-back programs.

D) "Crush expired medication tablets and rinse them down the sink":
Incorrect. Similar to flushing down the toilet, rinsing crushed medications down the sink can lead to water contamination. This method is not environmentally safe.

A) "Your urine will turn orange while you are taking this medication":
Correct. Rifampin is known to cause orange discoloration of bodily fluids, including urine, sweat, saliva, and tears. Informing the client about this common side effect helps alleviate concerns and ensures they are aware of the medication's expected effects.

B) "You should take this medication once each day at bedtime":
Incorrect. Rifampin is typically prescribed once daily, but the timing may vary based on the specific regimen prescribed by the healthcare provider. It is essential for the nurse to provide accurate information about the dosing schedule based on the client's prescription.

C) "You can continue to wear soft contact lenses while taking this medication":
Incorrect. Rifampin can cause discoloration of contact lenses. Therefore, clients should be advised to avoid wearing soft contact lenses during treatment to prevent staining.

D) "This medication will not interfere with the effectiveness of oral contraceptives":
Incorrect. Rifampin is a known inducer of hepatic enzymes, which can accelerate the metabolism of oral contraceptives and reduce their effectiveness. Clients taking rifampin should be informed about the potential for decreased contraceptive efficacy and advised to use additional or alternative methods of contraception during treatment.