The Client Has a Patient -Controlled Analgesia (PCA) Pump Following

The client has a patient -controlled analgesia (PCA) pump following surgery. The nurse keeps naloxone (Narcan) in the client's room as per protocol. What does the nurse recognize as the rationale for this protocol?

A) Naloxone (Narcan) is the antidote if an anaphylactic reaction to the opioid in the patient -controlled analgesia (PCA) pump occurs.
B) Naloxone (Narcan) enhances the effect of the opioid in the patient -controlled analgesia (PCA) pump and increases analgesia.
C) Naloxone (Narcan) will reverse the effects of the narcotic in the patient -controlled analgesia (PCA) pump if an overdose occurs.
D) Naloxone (Narcan) is available to treat any systemic side effects, like constipation, of the opioid in the patient -controlled analgesia (PCA) pump.