Final answer:
To communicate the situation to Marie's husband, the nurse should use empathetic communication, ensure confidentiality and legal compliance, be culturally sensitive, offer support, and answer questions to ensure understanding.
Step-by-step explanation:
The intervention that the nurse should implement to communicate the situation to Marie's husband is to use clear, empathetic, and honest communication techniques. It is important to ensure that the nurse maintains patient confidentiality, adheres to any legal requirements, and is culturally sensitive while conveying the information. The nurse should also provide support and answer any questions that Marie's husband may have regarding the situation, treatment options, and next steps, ensuring that he fully understands the information being provided.