In a client with mild traumatic brain injury, what change should the nurse report immediately?

In the context of a client with mild traumatic brain injury, a change in the Glasgow Coma Scale (GCS) score from 13 to 11 represents a significant decline in the patient's level of consciousness and overall neurological status. The GCS is a critical tool used to assess a patient's level of awareness and responsiveness following a brain injury. A score of 13 indicates mild impairment, while a score of 11 indicates a more serious level of impairment and potential deterioration of the patient’s condition.

This decrease in the GCS score suggests an increased risk for complications, such as worsening brain injury, increased intracranial pressure, or the possible development of conditions like a hematoma. It is crucial for the nurse to report this change immediately to ensure timely intervention and management by the healthcare team, as prompt care can significantly affect outcomes in patients with head injuries.

While other symptoms like a decrease in appetite, an increase in headache intensity, or a slight fever could be concerning, they do not directly indicate an immediate risk of deterioration in neurological function as a GCS change does. Therefore, the most critical change that warrants immediate reporting is the decrease in the GCS score.