A 64 year-old woman with hepatitis B has significant scarring on the liver and present to the clinic with swelling around the eyes. She is disoriented to time and place and seems confused. Her responses are slow and she has difficulty staying awake. A neurological assessment reveals hypoactive reflexes. Blood pressure : 164/96 mmHg Heart rate : 58/min Respiratory rate : 22/min shallow Temperature : 0°C tympanic Which of the following nursing interventions is most appropriate?