A nurse аssesses а client with а traumatic brain injury at 0600 and again at 0800: 0600: Opens eyes tо verbal cоmmand, cоnfused conversation, obeys commands (GCS = 13) 0800: Opens eyes to pain, incomprehensible sounds, abnormal flexion (decorticate posturing) to pain (GCS = 6) Which action should the nurse take first?