A nurse is caring for a patient who refuses a blood transfusion due to religious beliefs. Which ethical principle is most applicable here?

Choice A reason: Confidentiality refers to the nurse's legal and ethical obligation to protect a patient's private health information from unauthorized disclosure. While essential in all nursing care, it does not directly address the conflict between a prescribed medical intervention and a patient's personal right to refuse that specific treatment based on their beliefs. Choice B reason: Beneficence involves the duty to act in the best interest of the patient and provide care that promotes well-being. While the nurse might believe a transfusion is beneficial, this principle often conflicts with autonomy in these scenarios. However, the primary principle governing the right to refuse care is not beneficence but self-determination. Choice C reason: Justice in nursing ethics refers to the fair and equitable distribution of healthcare resources and treating all patients with impartiality. While the nurse must treat the patient fairly regardless of their religious choice, justice does not define the patient's right to make decisions regarding their own bodily integrity and medical treatments. Choice D reason: Autonomy is the ethical principle that recognizes the right of a competent individual to self-determination and to make informed decisions about their own medical care. In this context, respecting a patient's refusal of blood products based on religious convictions is a direct application of autonomy, even if the refusal contradicts medical advice.