Final answer:
The nurse should first tell the other nurse to stop discussing patient information to immediately address the confidentiality breach. Subsequent steps can include reporting and education on privacy practices.
Step-by-step explanation:
The first action the nurse should take is to tell the nurse to stop discussing the behavior. This addresses the confidentiality breach immediately and directly with the involved individuals. Following this, action steps such as notifying the nurse manager and providing education about client confidentiality can be taken. It is crucial for healthcare professionals to maintain confidentiality to comply with laws like HIPAA and to respect patient privacy.