Which nursing action exemplifies fidelity?

Fidelity in nursing refers to the commitment to keep promises and uphold trust with patients. In this context, when a nurse keeps a promise made to a client, it demonstrates fidelity by honoring the commitment that has been established between the nurse and the patient. This action reinforces the trust the client has in the nurse, which is crucial for a therapeutic nurse-client relationship. By following through on promises, the nurse exemplifies reliability and integrity in their care, fostering an environment where patients feel safe and valued.

The other options do not reflect fidelity as clearly. Sharing patient information without consent goes against confidentiality, failing to follow up undermines the client's trust, and documenting care after it has been provided does not directly relate to the promise or commitment aspect integral to fidelity. Therefore, keeping a promise is the best representation of fidelity in the nursing profession.