What should CO2 be with head injury?

In patients with head injuries, monitoring carbon dioxide (CO2) levels is crucial, as hypercapnia (elevated CO2) can lead to increased intracranial pressure. Ideally, arterial blood gas (ABG) values should be maintained within a range of 35-45 mmHg for CO2 to minimize complications. Hyperventilation may be employed in acute settings to lower CO2 levels and help manage intracranial pressure. However, individual management should always be tailored to the patient's specific condition and clinical status.