A nurse is caring for a client who has a mild traumatic brain injury (TBI). Which of the following manifestations should the nurse immediately report to the provider?

Choice A reason: A heart rate drop from 76 to 70 is minor and not specific to worsening TBI. A Glasgow Coma Scale decline indicates neurological deterioration, making this incorrect. Choice B reason: Ataxia suggests coordination issues, concerning but less urgent than a Glasgow Coma Scale drop. Altered consciousness is a priority, making this incorrect for immediate reporting. Choice C reason: Diplopia is concerning but less critical than a Glasgow Coma Scale decrease. Visual changes are secondary to consciousness decline, making this incorrect for immediate action. Choice D reason: A Glasgow Coma Scale drop from 13 to 11 indicates worsening neurological status, potentially from increasing ICP. This requires immediate reporting, making it the correct choice.