What ethical principle is demonstrated when a nurse supports a client’s decision to refuse chemotherapy?

The ethical principle illustrated in this scenario is autonomy, which emphasizes the right of individuals to make decisions about their own lives and bodies. When a nurse supports a client's choice to refuse chemotherapy, they are respecting the client's autonomy, which involves acknowledging and honoring the client's preferences and values regarding their treatment options. This principle is foundational in healthcare, as it empowers clients to take an active role in their healthcare decisions, ensuring that they are informed and involved in processes that affect their well-being. Supporting a client's decision in this way fosters trust and reinforces the client's self-determination, which is a critical aspect of ethical nursing practice.