Which action should be immediately taken in the event of a medication error?

In the case of a medication error, the priority action is to notify the healthcare provider and document the incident. This is crucial because timely communication with the healthcare provider allows for an immediate assessment of the patient's condition and any necessary interventions to address potential adverse effects caused by the error. Documentation is also vital to maintain accurate medical records, facilitate further investigations, and implement any necessary changes to prevent future errors.

The other actions listed do not appropriately address the urgency or seriousness of a medication error. Administering the medication again could exacerbate the situation without proper consultation, while completing a patient satisfaction survey does not address the immediate clinical concerns or provide a remedy to the patient. Discussing the error with coworkers may be useful for educational purposes, but it should not take precedence over alerting the healthcare provider and ensuring patient safety.